Dissertations / Theses on the topic 'Fisher County'

Some shallow (<7m, water depth) nearshore hardbottom areas of Southeast Florida have been reported to function as important juvenile habitat. I characterized the nearshore fish communities along a 30km stretch of coastline of Broward County, Florida from visual census data. Two-hundred transect-counts, 100 point-counts and 98 rover-diver counts were completed by myself and others during June-August, 2001. The abundance of all fish species and their sizes were recorded. The transects (30m long, 2m wide, 1m high) were laid perpendicular (compass heading 90°) to the innermost edge of hardbottom. Transects were placed every 152m of coastline. Altemately, a point-count or 20 min rover-diver count was also performed over the hard bottom just north of the 30m transect. All counts occurred between approximately 2m and 6m water depth. One hundred-sixty nine species and over 72,000 fish were recorded. Recently settled juveniles (≤ 5cm) were the dominant component (>80%) of the inshore fish community, consisting primarily (>90%) of grunts (Haemulidae).

Engaging with fishers’ knowledge (FK) is increasingly valued in fisheries management (a) for FK’s utility for science and management, and (b) to improve the legitimacy of fisheries governance. Referring to both perspectives, this thesis examines: the nature and types of FK; FK’s relationship to scientific knowledge; and ‘extractive’ and ‘participative’ approaches taken to engage with FK. Chapters 3 and 4 compare fishers’ reports of catch rates with official landings data and underwater visual census (UVC). In Seychelles, contemporary reported catch rates and landings were consistent; but FK, landings and UVC perceived different trends over time. Over five western-Indian-Ocean countries, reported catch rates had no detectable relationship with UVC-measured fish biomass, despite a six-fold range in biomass. Such disparities between fishers’ and scientists’ perceptions provide opportunities to broaden the information base for monitoring; but challenge the legitimacy of science-based management in the eyes of resource users. Chapters 5 and 6 examine extractive approaches to engage FK. An interview-based stock assessment in Seychelles indicated that stocks were overexploited in contradiction to the qualitative perceptions of interviewed fishers. The extractive approach did not take account of fishers’ mental models which diverged from scientific assumptions about fish population dynamics and catch rates. In the North Sea, a postal questionnaire collected FK on stock trends, but had limited potential to influence scientific advice and satisfy fishers’ expectations, due to its limited scope T. Daw. How Fishers Count Page 3 and the lack of frameworks to utilise FK. Both cases illustrate the limitations of extractive methods, and the importance of engaging with more complex types of FK. Disagreements with science seem likelier, and more difficult to resolve for abstract types of FK. Extractive approaches can engage large numbers of fishers, but are less reliable and fail to improve governance. Participatory approaches, including collaborative research have greater promise for improving fisheries science and management.

Many marine fishes use the mangrove ecosystem for foraging, protection, spawning, and as a nursery habitat. To develop a better understanding of energy flow between the coastal mangrove and coral reef ecosystems, the ontogentic migration and trophic connectivity of reef fishes were examined through the use of carbon (C), nitrogen (N), and oxygen (O) stable isotope ratios. Juvenile and adult gray snapper Lutjanus griseus, lane snapper L. synagris, bluestriped grunt Haemulon sciurus, French grunt H. flavolineatum, sailor’s choice H. parra, yellowfin mojarra Gerres cinereus, and great barracuda Sphyraena barracuda were collected from both mangrove and coral reef sites located near Port Everglades, Broward County, Florida. All species were analyzed for δ13C and δ15N of muscle tissues and δ 18O and δ 13C of otoliths to evaluate ontogenetic migrations, foraging, and occupation within both the mangrove and reef sites. The δ13C and δ15N in muscle tissue were more depleted in juvenile fish from the mangroves than their adult forms caught on the adjacent reef. The δ18O and δ13C otolith data were significantly different between species, age class, and habitat, with lower δ18O values for juvenile fish caught in the mangroves. A general trend of increasing δ13C in otoliths corresponded to increasing total length, also suggesting juvenile movements from mangrove to nearshore reefs with age. Overall, the findings of this study further confirm that several commercially and recreationally important reef-associated fishes utilize mangrove ecosystems during juvenile life stages.

Many communities are currently seeking to balance urban water needs with preservation of sensitive fish habitat. As part of that effort, CE-QUAL-W2, a hydrodynamic and temperature model, was developed for Chester Morse Lake and the lower Cedar River, WA. Chester Morse Lake is approximately 10 km long with a maximum depth at full pool of 40 m. The Cedar River model started immediately downstream of the Chester Morse dam and ended 21 km downstream at Landsburg, where drinking water is diverted for the City of Seattle. This water quality model was coupled with a fish habitat and bioenergetics model for bull trout and was calibrated to temperature data between 2005 and 2008. Bull trout fish bioenergetics parameters were provided by the USGS. The CE-QUAL-W2 model was found to be highly accurate in modeling temperature variation in the lake - at most locations having an average absolute mean error of between 0.5 and 0.8 oC. The Cedar River model had an average absolute mean error of 0.7oC. This tool is designed to allow managers and operators to estimate the impact to fish habitat and growth potential from various management decisions including extent of drawdown, timing/volume of flows, and various pumping operations. Future studies could include incorporating further water quality parameters such as nutrients, algae, and zooplankton as they relate to fish productivity.

The objective of this project was to determine if the electromagnetic field (EMF) emissions from undersea power cables impacted the local and transient marine life, with an emphasis on reef fishes. The work was done at South Florida Ocean Measurement Facility of Naval Surface Warfare Center, Carderock Division, Broward County, Florida. This facility functions as the hub for a range of active undersea detection and data transmission cables. It has multiple active submarine power cables that extend several miles offshore and which can deliver power and enable data transmission to and from a range of acoustic and EMF sensors. The cables lie directly on the seabed, are buried in the sand, or are suspended in the water column. EMF emissions from a selected cable were created during SCUBA fish surveys. During the surveys the transmission of either alternating current (AC) or Direct Current (DC) was randomly intiated by the facility with no transmitted current (OFF) provided a control. The surveys were conducted using standardized transect and stationary point count methods to acquire reef fish abundances prior to and immediately after a change in transmission frequency (the divers were aware of the time of frequency change but not the specific frequencies). The divers were also tasked to note the reaction of the reef fishes to the immediate change in the EMFs emitting from the cable during a power switch. The surveys were conducted on a quarterly basis at three sampling sites offshore on the same cable. These sites were in water depths of approximately 5, 10, and 15 m, respectively and were selected based on their robust reef fish community and are representative of each of the three primary hardbottom coral reef habitats in the local offshore environment: the Inner (Shallow), Middle, and Outer (Deep) reef tracts. A total of 263 surveys were conducted: 132 transect-counts and 131 point-counts over 15 months. There were 24,473 fishes counted during transect-count surveys and with point-counts, 36,115 fishes were counted. With count types and sites combine a total of 151 species representing 35 families were recorded. An analysis of the data primarily did not find statistical differences among power states and any variables. However, this may be a Type II error as there are strong indications of a potential difference of a higher abundance of reef fishes at the sites when the power was off. There are a number of caveats to consider with this finding: the data set needs to be larger in terms of numbers of: counts, sites and eletro-sensitive species to allow for rigorous statistical analysis; also a longer time between frequency changes to allow for slower, but nonetheless important, reactions to differing EMFs might lead to differing conclusions. Obviously, more research is required to confirm the results of this study.

Thesis (M.S.)--West Virginia University, 2005.
Title from document title page. Document formatted into pages; contains vii, 101 p. : ill. (some col.), maps (part col.). Vita. Includes abstract. Includes bibliographical references.

Mongolia is currently undergoing a rapid socioeconomic transition with extensive development driven by increased mineral resource extraction and large scale agriculture and pastoral expansion. There has also been unprecedented urbanisation and continued population growth that has placed added pressure on the ageing public infrastructure including power stations and waste water treatment plants. As a result, the country’s pristine landscapes, including its vast freshwater ecosystems, are now facing widespread degradation, contamination and species losses in the most impacted regions. The proposed large-scale dams and imminent climate change effects will further damage these fragile ecosystems. With a number of rivers and lakes deteriorating, resident aquatic communities, including unique fish species, have suffered significant population declines. However, a more substantial threat currently facing these fish populations is the rapid and largely unregulated rise in fishing activities within an emerging recreational fishery. Although historically fish capture and consumption has not been a traditional part of the Mongolian diet or culture, this is changing rapidly. Therefore a comprehensive set of research projects were developed and implemented across Mongolia, to gather essential information on this new fishery, while also addressing existing knowledge gaps regarding the spatial ecology and genetic structure of the main target species. In addition, a potential human health risk was evident due to the increased consumption of locally caught fish species from a heavily impacted river basin, and thus this was also investigated. Overall, the collective aim of this fisheries research was to increase the scientific understanding and knowledge across a range of issues and ultimately advise authorities on improving current management regulations and conservation strategies. It is hoped that the recommendations can assist in safeguarding the future sustainability and resilience of the threatened fish populations and the emerging recreational fishery across Mongolia for the future. A total of five fisheries related research projects were completed between 2011 and 2014, with the results from each used to formulate the conservation and management recommendations presented in this thesis. Due to the lack of knowledge regarding the emerging recreational fishery, roving creel surveys were conducted across three river basins and covered five key topics including angler demographics, fishing practices, current fishing trip data, fishing gear and costs, and angler knowledge and opinions. Fifty-eight fishing groups (n = 154 anglers) were interviewed and two angler types were identified: rural anglers with no or low incomes, who reside in the basin, fish alone or in smaller groups, fish frequently for shorter periods, and consumed fish more regularly; and urban anglers who have medium to high incomes, live in larger cities, spent more money on fishing gear / trips and fished for multiple days at a time. B. lenok was identified as the most targeted and caught species in the fishery. The results of the creel surveys confirmed increased fish consumption in the Kharaa River basin, which was identified as a potential human health risk due to the widespread heavy metal contamination from both past and present mining activities. Thus heavy metal contaminates in river water, sediment and five consumed fish species were examined at 11 sites across the basin. Heavy metals were evident in all five sampled species, with maximum muscle contents of chromium (Cr), arsenic (As), mercury (Hg) and lead (Pb) detected in fish from the middle and lower reaches, while zinc (Zn) was highly elevated in B. lenok from the upper tributaries. Elevated median contents of Cr, copper (Cu), Hg and Pb increased with trophic level, with the bioaccumulation of Hg posing the greatest threat to human health with over 10 % of all fish sampled exceeded the internationally recommended threshold for Hg in consumable fish tissue (> 0.5 µg g-1 ww). This bioaccumulation in resident fish species could lead to chronic toxicity in people who consume them regularly and have additional exposure to other sources of contamination e.g. gold mining. A further two projects were conducted that utilised passive acoustic telemetry to describe the spatial and temporal autecology, habitat use and behaviour of B. lenok in the Eroo River and H. taimen in the Onon/Balj rivers under Mongolia’s extreme seasonal conditions. The maximum longitudinal movements (home ranges) detected were more extensive than previously reported for both species with 45.3 km for B. lenok and 126.1 km for H. taimen. Increased movements were recorded in spring and summer, with individuals entering surrounding tributaries and remaining there for between four and 85 days before returning to the main river channel. The results highlighted the importance of maintaining the integrity and connectivity of tributary habitats for spawning, feeding and overwintering, as well as hydrological and thermal refuges, which will be increasingly important for these species in the region with the pending impacts of climate change. This increased knowledge relating to the spatial ecology of these threatened species can guide the design and implementation of new protective measures such as the introduction of Freshwater Protected Areas (FPAs) across Mongolia. Further research was conducted to gain a broader, multigenerational understanding of the interconnectedness between conspecific populations of H. taimen, B. lenok and T. baicalensis across the major river basins. Both molecular and nuclear markers were used to demarcate the population’s genetic structure and define Evolutionary Significant Units (ESUs) and priority populations for these species across their Mongolian distributions. Across all species, the most prominent pattern was a strong differentiation among major basins with low differentiation and weak patterns of isolation by distance within basins, which indicates high within-basin connectivity between populations, although exact patterns were not completely concordant among species. The extensive results produced from the current scientific research has facilitated the development of a comprehensive set of key recommendations for implementing new, and enhancing existing, management and conservation measures relating to Mongolia’s threatened salmonid species and its emerging recreational fishery. These recommendations include: 1. Establishing a series of Freshwater Protected Areas (FPAs) throughout Mongolia’s major river basins, with their design and location based upon the spatial ecology and genetic population structure determined by the current research results; 2. Shifting the opening date of the fishing season to encompass the entire spawning period of B. lenok (the fishery’s main target species), which appears to currently not be the case; 3. Adding the blunt-snouted lenok (B. sp.) to the prohibited species list, as it has been genetically proven to be an independent species and has a restricted distribution and low abundance in Mongolia; and 4. Introducing minimum (and potentially maximum) size limits for B. lenok and T. baicalensis, to better protect immature and pre-spawning individuals from being removed from the population. In addition, it is highly recommended to commence fisheries dependent and independent assessments in key river basins and conduct biomonitoring programs (using a bioindicator species) to track toxic heavy metal contamination and identify potential human health risks associated with consuming resident fish species from the more heavily impacted regions. The lack of knowledge of the current fishing regulations by anglers as well as the observed and reported widespread illegal fishing activities demands a wide-ranging angler education program to improve understanding and compliance within the fishery. The future survival of these threatened salmonids and the sustainability of the emerging recreational fishery in Mongolia currently hangs in the balance. However, if these scientifically based recommendations are implemented in full, and can be adequately enforced, then the responsible authorities can take a huge step forward towards reversing the current trends and preserving the country’s imperilled freshwater fish populations and their valuable aquatic ecosystems. Mongolia can be a model for freshwater species conservation and management throughout the region and the world.:DECLARATION OF CONFORMITY I TABLE OF CONTENTS II ACKNOWLEDGMENTS V LIST OF ABBREVIATIONS VI LIST OF FIGURES VII LIST OF TABLES VIII SUMMARY IX SUMMARY IN GERMAN / ZUSAMMENFASSUNG AUF DEUTSCH XII SUMMARY IN MONGOLIAN / ХУРААНГУЙ XVI INTRODUCTION 1 1 RESEARCH OBJECTIVES AND HYPOTHESES 1 1.1 OVERALL THESIS OBJECTIVES 6 2 MONGOLIA’S NATURAL ENVIRONMENT 7 2.1 GEOGRAPHIC ECOREGIONS 7 2.2 CLIMATIC CONDITIONS 7 2.3 HYDROLOGICAL NETWORKS 8 2.4 FRESHWATER FISH FAUNA 9 3 ANTHROPOGENIC FORCINGS 11 3.1 CURRENT SOCIOECONOMIC TRANSITIONS 11 3.2 INTENSIFYING FISHING ACTIVITIES 11 3.3 CONTAMINATION OF AQUATIC ECOSYSTEMS 12 3.4 IMMINENT THREATS 15 RESEARCH CHAPTERS 17 4 AN EMERGING RECREATIONAL FISHERY IN MONGOLIA’S URBANISING SOCIETY: A THREAT TO ITS PRISTINE FISH STOCKS? 17 4.1 ABSTRACT 17 4.2 INTRODUCTION 18 4.3 MATERIALS AND METHODS 20 4.4 RESULTS 22 4.5 DISCUSSION 29 5 REGIONAL PATTERNS OF HEAVY METAL EXPOSURE AND CONTAMINATION IN THE FISH FAUNA OF THE KHARAA RIVER BASIN (MONGOLIA) 36 5.1 ABSTRACT 36 5.2 INTRODUCTION 37 5.3 MATERIALS AND METHODS 39 5.4 RESULTS 43 5.5 DISCUSSION 49 6 MOVEMENTS AND BEHAVIOUR OF AN ARCHAIC TROUT, BRACHYMYSTAX LENOK (PALLAS, 1773) UNDER EXTREME ENVIRONMENTAL CONDITIONS IN MONGOLIA 57 6.1 ABSTRACT 57 6.2 INTRODUCTION 57 6.3 MATERIALS AND METHODS 60 6.4 RESULTS 64 6.5 DISCUSSION 71 7 SEASONAL HOME RANGE SHIFTS OF THE SIBERIAN TAIMEN (HUCHO TAIMEN; PALLAS, 1773): EVIDENCE FROM PASSIVE ACOUSTIC TELEMETRY IN THE ONON RIVER AND BALJ TRIBUTARY (AMUR RIVER BASIN, MONGOLIA) 78 7.1 ABSTRACT 78 7.2 INTRODUCTION 79 7.3 MATERIALS AND METHODS 81 7.4 RESULTS 84 7.5 DISCUSSION 88 8 FISH CONSERVATION IN THE LAND OF STEPPE AND SKY: EVOLUTIONARY SIGNIFICANT UNITS OF THREATENED SALMONID SPECIES IN MONGOLIA MIRROR MAJOR RIVER BASINS 95 8.1 ABSTRACT 95 8.2 INTRODUCTION 95 8.3 MATERIALS AND METHODS 98 8.4 RESULTS 101 8.5 DISCUSSION 108 DISCUSSION 115 9 SOLUTIONS FOR SUSTAINABLE FISHERIES IN MONGOLIA 115 9.1 OVERVIEW AND LINKAGES OF KEY RESEARCH FINDINGS 115 9.2 FRESHWATER FISH CONSERVATION IN A TRANSITIONAL SOCIETY 118 9.3 ADDRESSING MANAGEMENT SHORTFALLS TO CURB INTENSIFYING FISHING ACTIVITIES 119 9.4 BIOMONITORING TO MITIGATE HUMAN HEALTH RISKS 122 9.5 IMPROVING ANGLER COMPLIANCE WITH INCREASED EDUCATION 123 9.6 PRESERVING HYDROLOGICAL CONNECTIVITY AND RIVER INTEGRITY IN THE FACE OF IMMINENT THREATS 124 9.7 MANAGEMENT AVOIDANCES 127 9.8 TRANSFERABILITY OF RESEARCH METHODS, RESULTS AND RECOMMENDATIONS 127 9.9 FUTURE RESEARCH AND MANAGEMENT PRIORITIES 129 10 REFERENCES 132 APPENDIX 1 I APPENDIX 2 II APPENDIX 3 VI APPENDIX 4 VIII APPENDIX 5 XXI APPENDIX 6 XXII APPENDIX 7 XXIV 11 REFERENCES TO OWN PUBLISHED / SUBMITTED MANUSCRIPT IN THE PRESENT THESIS XXV 12 INDIVIDUAL CONTRIBUTIONS TO THE CURRENT THESIS XXVI 13 NOTE ON THE COMMENCEMENT OF THE DOCTORAL PROCEDURE XXVIII 14 CURRICULUM VITAE XXIX 15 LIST OF PUBLICATIONS XXXI
Die Mongolei befindet sich derzeit in einem rasanten sozioökonomischen Übergang mit tiefgreifenden Veränderungen, die v.a. durch eine Zunahme bergbaulicher Aktivitäten sowie einen Ausbau ackerbaulicher Nutzungen wie auch der Viehwirtschaft angetrieben werden. Derzeit vollzieht sich eine noch nie dagewesene Urbanisierung und ein weiteres Bevölkerungswachstum, das auf die alternde öffentliche Infrastruktur, einschließlich Kraftwerke und Abwasserbehandlungsanlagen, einen zusätzlichen Druck ausübt. Infolgedessen zeigen sich in den weitgehend unberührten Landschaften des Landes, einschließlich seiner riesigen Süßwasser-Ökosysteme, deutliche Anzeichen von Übernutzung natürlicher Ressourcen, Umweltverschmutzung und Artenverlusten. Zukünftig geplante große Staudämme werden neben den bevorstehenden Auswirkungen des Klimawandels die Hydrologie deutlich verändern. So sind bereits deutliche Beeinträchtigungen der Fluss-und See-Ökosysteme erkennbar, insbesondere in Hinblick auf ihre aquatischen Lebensgemeinschaften. Einige der weltweit einzigartigen Fischarten haben bereits erhebliche Bevölkerungsrückgänge erlitten. Eine weitere existenzielle Bedrohung für diese Fischpopulationen ist der rasche und weitgehend un-regulierte Anstieg der Fischereitätigkeiten aus einer aufstrebenden Freizeitfischerei. Obwohl Fischfang und -konsum keine traditionellen Elemente der mongolischen Ernährung oder Kultur darstellen, vollziehen sich diesbezüglich derzeit tiefgreifende Veränderungen. Daher wurden in der Mongolei umfangreiche Forschungsprojekte geplant und durchgeführt, um wesentliche Informationen über diese neue Art der Fischerei zu sammeln und gleichzeitig bestehende Wissenslücken in Bezug auf die räumliche Ökologie und die Metapopulationsstruktur der wichtigsten Zielarten zu schließen. Darüber hinaus zeigten Untersuchungen, dass sich aufgrund des erhöhten Konsums von lokal gefangenen Fischarten aus einem stark beeinträchtigten Einzugsgebiet ein potenzielles Risiko für die menschliche Gesundheit ergibt. Insgesamt ist das übergeordnete Ziel dieser Fischereiforschung, das wissenschaftliche Verständnis und Wissen zu erweitern und letztlich die derzeitigen Managementinstrumente zu verbessern und neue Erhaltungsmaßnahmen zu ergreifen, um die Nachhaltigkeit und Widerstandsfähigkeit der bedrohten Fischartenpopulationen und die aufkommende Erholung zu sichern. Insgesamt wurden zwischen 2011 und 2014 insgesamt fünf fischereibiologische Forschungsprojekte abgeschlossen, wobei die Ergebnisse dieser Arbeiten in Erhaltungs- und Managementempfehlungen münden. Wegen des Mangels an Wissen über die aufkommende Freizeitfischerei wurden Anglerbefragungen in drei Einzugsgebieten durchgeführt, welche fünf wichtige Themen wie Angler-Demographie, Fischereipraktiken, Reisetätigkeiten, Fanggeräte und Kosten sowie Anglerwissen und Meinungen umfassten. Fünfundsechzig Angelgruppen (n = 154 Angler) wurden interviewt und zwei Anglertypen identifiziert: ländliche Angler ohne oder niedrige Einkommen, die in dem Becken wohnen, alleine oder in kleineren Gruppen fischen, häufig für kürzere Zeiten fischen und regelmäßig Fisch verzehren; und städtische Angler, die mittlere bis hohe Einkommen haben, in größeren Städten leben, mehr Geld für Fanggeräte / Ausflüge ausgegeben und typischerweise für mehrere Tage am Stück fischen. B. lenok wurde als die bevorzugte und am meisten gefangene Zielarten der Fischerei identifiziert. Die Ergebnisse der Anglerbefragungen bestätigten den erhöhten Fischkonsum im Kharaa-Einzugsgebiet, das aufgrund der weit verbreiteten Schwermetallverunreinigung aus der Vergangenheit und den gegenwärtigen Bergbauaktivitäten als potenzielles Risiko für die menschliche Gesundheit identifiziert wurde. So wurden Schwermetallverunreinigungen im Flusswasser, Sediment und fünf konsumierten Fischarten an 11 Standorten im Einzugsgebiet untersucht. Schwermetalle zeigten sich in allen fünf Stichprobenarten, wobei der maximale Muskelgehalt von Cr, As, Hg und Pb in Fischen aus dem Mittel- und Unterlauf festgestellt wurde, während Zn in B. lenok in den Oberlaufregionen stark erhöht war. Der erhöhte mediane Gehalt an Cr, Cu, Hg und Pb nahm mit trophischer Ebene zu, wobei die Bioakkumulation von Hg die größte Bedrohung für die menschliche Gesundheit darstellte, wobei über 10% aller Fischproben den international empfohlenen Schwellenwert für Hg im verzehrbaren Fischgewebe überstiegen (> 0,5 μg g-1 ww). Diese Bioakkumulation in residenten Fischarten könnte zu chronischen Intoxikationen bei Menschen führen, die sie regelmäßig konsumieren und zusätzliche Exposition gegenüber anderen Kontaminationsquellen haben, z.B. im Goldbergbau. Es wurden weitere zwei Projekte durchgeführt, die eine passive akustische Telemetrie zur Beschreibung der räumlichen und zeitlichen Autökologie, des Lebensraumnutzens und des Verhaltens von B. lenok im Eroo River und H. taimen in den Flüssen Onon und Balj unter den extremen Klimabedingungen der Mongolei verwendeten. Die maximalen Längsbewegungen (Heimatbereiche) wurden -umfangreicher als bisher angenommen- für beide Arten wurden auf 45,3 km für B. lenok und 126,1 km für H. taimen ermittelt. Im Frühjahr und Sommer wurden erhöhte Bewegungen aufgezeichnet, wobei die Individuen in die umliegenden Nebenflüsse eintraten und dort zwischen 4 und 85 Tagen verblieben, bevor sie zum Hauptfluss des Flusses zurückkehrten. Die Ergebnisse zeigen die Bedeutung der Aufrechterhaltung der Integrität und der Konnektivität von Nebenflüssen für Laichen, Nahrungssuche und Überwinterung sowie hydrologische und thermische Schutzräume, die für diese Arten in der Region mit den anstehenden Auswirkungen des Klimawandels zunehmend an Bedeutung gewinnen werden. Die verbesserten Kenntnisse der räumlichen Ökologie dieser bedrohten Arten kann die Gestaltung und Umsetzung neuer Schutzmaßnahmen wie Süßwasser-Schutzgebiete in der Mongolei wissenschaftlich fundieren und leiten. Weitere Untersuchungen wurden durchgeführt, um ein breiteres, multigenerationales Verständnis der Zusammenhänge zwischen den konkreten Populationen von H. taimen, B. lenok und T. baicalensis über die großen Flusseinzugsgebiete zu gewinnen. Sowohl molekulare als auch nukleare Marker wurden verwendet, um die genetische Struktur abzugrenzen und definieren, so z.B. evolutionär signifikante Einheiten (ESUs) und eigenständige Populationen für diese Arten einschließlich ihrer räumlichen Verteilung in der Mongolei. Über alle Arten hinweg war das deutlichste Muster eine starke Differenzierung zwischen den großen Becken mit geringer Differenzierung. Dem gegenüber stehen schwache Muster der Isolation durch die Distanz in den Becken, die eine hohe einzugsgebietsinterne Konnektivität anzeigen, obwohl exakte Muster nicht vollständig unter allen Arten übereinstimmten. Die Prioritäten der Erhaltung müssen sich auf die Verbesserung des Schutzes der vorrangigen Bevölkerungsgruppen innerhalb jeder Art und ESU konzentrieren, um die begrenzten verfügbaren Ressourcen für die Arten- und Populations-Erhaltung und fischereiliche Bewirtschaftung in der Mongolei zu maximieren. Die umfangreichen Ergebnisse aus der aktuellen wissenschaftlichen Forschung ermöglichten die Ableitung umfassender Empfehlungen für die Umsetzung neuer und die Verbesserung der bestehenden Management- und Erhaltungsmaßnahmen in Bezug auf die bedrohten Lachsarten der Mongolei und die aufkommende Freizeitfischerei. Diese Empfehlungen beinhalten 1.die Gründung einer Reihe von Süßwasser-Schutzgebieten (FPA) in den großen Flussgebieten der Mongolei auf der Grundlage der räumlichen Ökologie und der genetischen Bevölkerungsstruktur, die durch die aktuellen Forschungsergebnisse untermauert wird; 2. Eine Verschiebung des Eröffnungstermins der Fangsaison, welche im Gegensatz zur aktuellen Praxis die gesamte Laichzeit von B. lenok (die Hauptzielspezies der Fischerei); umfassen sollte; 3. Hinzufügen des Stumpfschnauzen-Lenok (B. sp.) zur Liste der besonders geschützten Arten, da er sich als eine genetisch unabhängige Spezies erwiesen hat, welche eine begrenzte räumliche Verteilung und geringe Populationsdichte in der Mongolei hat; und 4. Einführung von minimalen (und potentiell maximalen) Körpergrößenbeschränkungen für B. lenok und T. baicalensis, um die unreifen und heranwachsenden Individuen besser vor menschlichen Einflüssen zu schützen. Darüber hinaus empfiehlt es sich dringend, in den wichtigsten Flussgebieten fischereilich genutzte und nicht genutzte Fischpopulationen zu erfassen und Biomonitoring-Programme (unter Verwendung von Bioindikator-Spezies) zu implementieren, um toxische Schwermetallverunreinigungen zu verfolgen und potenzielle Risiken für die menschliche Gesundheit zu identifizieren, die mit dem Verzehr Fischen aus beeinträchtigten Regionen einhergehen. Schließlich verlangt das Fehlen von Kenntnissen über die derzeitigen Fischereiverordnungen durch Angler sowie die beobachteten und gemeldeten weitverbreiteten illegalen Fischereitätigkeiten ein weitreichendes Angler-Bildungsprogramm, um das Verständnis und die Einhaltung fischereilicher Regelungen zu verbessern. Das künftige Überleben der bedrohten Salmoniden und die Nachhaltigkeit der aufkommenden Freizeitfischerei in der Mongolei sind eng miteinander verbunden. Sofern die hier dargestellten wissenschaftlich fundierten Empfehlungen in vollem Umfang umgesetzt werden und hinreichend kontrolliert werden können, würden die zuständigen Behörden einen großen Schritt in Richtung der Umkehrung der aktuellen Trends machen und die gefährdeten Süßwasserfischpopulationen des Landes und ihre wertvollen aquatischen Ökosysteme bewahren. Die Mongolei könnte dann ein Modell für die Erhaltung und Bewirtschaftung von Süßwasserarten in der ganzen Region und der Welt werden.:DECLARATION OF CONFORMITY I TABLE OF CONTENTS II ACKNOWLEDGMENTS V LIST OF ABBREVIATIONS VI LIST OF FIGURES VII LIST OF TABLES VIII SUMMARY IX SUMMARY IN GERMAN / ZUSAMMENFASSUNG AUF DEUTSCH XII SUMMARY IN MONGOLIAN / ХУРААНГУЙ XVI INTRODUCTION 1 1 RESEARCH OBJECTIVES AND HYPOTHESES 1 1.1 OVERALL THESIS OBJECTIVES 6 2 MONGOLIA’S NATURAL ENVIRONMENT 7 2.1 GEOGRAPHIC ECOREGIONS 7 2.2 CLIMATIC CONDITIONS 7 2.3 HYDROLOGICAL NETWORKS 8 2.4 FRESHWATER FISH FAUNA 9 3 ANTHROPOGENIC FORCINGS 11 3.1 CURRENT SOCIOECONOMIC TRANSITIONS 11 3.2 INTENSIFYING FISHING ACTIVITIES 11 3.3 CONTAMINATION OF AQUATIC ECOSYSTEMS 12 3.4 IMMINENT THREATS 15 RESEARCH CHAPTERS 17 4 AN EMERGING RECREATIONAL FISHERY IN MONGOLIA’S URBANISING SOCIETY: A THREAT TO ITS PRISTINE FISH STOCKS? 17 4.1 ABSTRACT 17 4.2 INTRODUCTION 18 4.3 MATERIALS AND METHODS 20 4.4 RESULTS 22 4.5 DISCUSSION 29 5 REGIONAL PATTERNS OF HEAVY METAL EXPOSURE AND CONTAMINATION IN THE FISH FAUNA OF THE KHARAA RIVER BASIN (MONGOLIA) 36 5.1 ABSTRACT 36 5.2 INTRODUCTION 37 5.3 MATERIALS AND METHODS 39 5.4 RESULTS 43 5.5 DISCUSSION 49 6 MOVEMENTS AND BEHAVIOUR OF AN ARCHAIC TROUT, BRACHYMYSTAX LENOK (PALLAS, 1773) UNDER EXTREME ENVIRONMENTAL CONDITIONS IN MONGOLIA 57 6.1 ABSTRACT 57 6.2 INTRODUCTION 57 6.3 MATERIALS AND METHODS 60 6.4 RESULTS 64 6.5 DISCUSSION 71 7 SEASONAL HOME RANGE SHIFTS OF THE SIBERIAN TAIMEN (HUCHO TAIMEN; PALLAS, 1773): EVIDENCE FROM PASSIVE ACOUSTIC TELEMETRY IN THE ONON RIVER AND BALJ TRIBUTARY (AMUR RIVER BASIN, MONGOLIA) 78 7.1 ABSTRACT 78 7.2 INTRODUCTION 79 7.3 MATERIALS AND METHODS 81 7.4 RESULTS 84 7.5 DISCUSSION 88 8 FISH CONSERVATION IN THE LAND OF STEPPE AND SKY: EVOLUTIONARY SIGNIFICANT UNITS OF THREATENED SALMONID SPECIES IN MONGOLIA MIRROR MAJOR RIVER BASINS 95 8.1 ABSTRACT 95 8.2 INTRODUCTION 95 8.3 MATERIALS AND METHODS 98 8.4 RESULTS 101 8.5 DISCUSSION 108 DISCUSSION 115 9 SOLUTIONS FOR SUSTAINABLE FISHERIES IN MONGOLIA 115 9.1 OVERVIEW AND LINKAGES OF KEY RESEARCH FINDINGS 115 9.2 FRESHWATER FISH CONSERVATION IN A TRANSITIONAL SOCIETY 118 9.3 ADDRESSING MANAGEMENT SHORTFALLS TO CURB INTENSIFYING FISHING ACTIVITIES 119 9.4 BIOMONITORING TO MITIGATE HUMAN HEALTH RISKS 122 9.5 IMPROVING ANGLER COMPLIANCE WITH INCREASED EDUCATION 123 9.6 PRESERVING HYDROLOGICAL CONNECTIVITY AND RIVER INTEGRITY IN THE FACE OF IMMINENT THREATS 124 9.7 MANAGEMENT AVOIDANCES 127 9.8 TRANSFERABILITY OF RESEARCH METHODS, RESULTS AND RECOMMENDATIONS 127 9.9 FUTURE RESEARCH AND MANAGEMENT PRIORITIES 129 10 REFERENCES 132 APPENDIX 1 I APPENDIX 2 II APPENDIX 3 VI APPENDIX 4 VIII APPENDIX 5 XXI APPENDIX 6 XXII APPENDIX 7 XXIV 11 REFERENCES TO OWN PUBLISHED / SUBMITTED MANUSCRIPT IN THE PRESENT THESIS XXV 12 INDIVIDUAL CONTRIBUTIONS TO THE CURRENT THESIS XXVI 13 NOTE ON THE COMMENCEMENT OF THE DOCTORAL PROCEDURE XXVIII 14 CURRICULUM VITAE XXIX 15 LIST OF PUBLICATIONS XXXI

Mongolia is currently undergoing a rapid socioeconomic transition with extensive development driven by increased mineral resource extraction and large scale agriculture and pastoral expansion. There has also been unprecedented urbanisation and continued population growth that has placed added pressure on the ageing public infrastructure including power stations and waste water treatment plants. As a result, the country’s pristine landscapes, including its vast freshwater ecosystems, are now facing widespread degradation, contamination and species losses in the most impacted regions. The proposed large-scale dams and imminent climate change effects will further damage these fragile ecosystems. With a number of rivers and lakes deteriorating, resident aquatic communities, including unique fish species, have suffered significant population declines. However, a more substantial threat currently facing these fish populations is the rapid and largely unregulated rise in fishing activities within an emerging recreational fishery. Although historically fish capture and consumption has not been a traditional part of the Mongolian diet or culture, this is changing rapidly. Therefore a comprehensive set of research projects were developed and implemented across Mongolia, to gather essential information on this new fishery, while also addressing existing knowledge gaps regarding the spatial ecology and genetic structure of the main target species. In addition, a potential human health risk was evident due to the increased consumption of locally caught fish species from a heavily impacted river basin, and thus this was also investigated. Overall, the collective aim of this fisheries research was to increase the scientific understanding and knowledge across a range of issues and ultimately advise authorities on improving current management regulations and conservation strategies. It is hoped that the recommendations can assist in safeguarding the future sustainability and resilience of the threatened fish populations and the emerging recreational fishery across Mongolia for the future. A total of five fisheries related research projects were completed between 2011 and 2014, with the results from each used to formulate the conservation and management recommendations presented in this thesis. Due to the lack of knowledge regarding the emerging recreational fishery, roving creel surveys were conducted across three river basins and covered five key topics including angler demographics, fishing practices, current fishing trip data, fishing gear and costs, and angler knowledge and opinions. Fifty-eight fishing groups (n = 154 anglers) were interviewed and two angler types were identified: rural anglers with no or low incomes, who reside in the basin, fish alone or in smaller groups, fish frequently for shorter periods, and consumed fish more regularly; and urban anglers who have medium to high incomes, live in larger cities, spent more money on fishing gear / trips and fished for multiple days at a time. B. lenok was identified as the most targeted and caught species in the fishery. The results of the creel surveys confirmed increased fish consumption in the Kharaa River basin, which was identified as a potential human health risk due to the widespread heavy metal contamination from both past and present mining activities. Thus heavy metal contaminates in river water, sediment and five consumed fish species were examined at 11 sites across the basin. Heavy metals were evident in all five sampled species, with maximum muscle contents of chromium (Cr), arsenic (As), mercury (Hg) and lead (Pb) detected in fish from the middle and lower reaches, while zinc (Zn) was highly elevated in B. lenok from the upper tributaries. Elevated median contents of Cr, copper (Cu), Hg and Pb increased with trophic level, with the bioaccumulation of Hg posing the greatest threat to human health with over 10 % of all fish sampled exceeded the internationally recommended threshold for Hg in consumable fish tissue (> 0.5 µg g-1 ww). This bioaccumulation in resident fish species could lead to chronic toxicity in people who consume them regularly and have additional exposure to other sources of contamination e.g. gold mining. A further two projects were conducted that utilised passive acoustic telemetry to describe the spatial and temporal autecology, habitat use and behaviour of B. lenok in the Eroo River and H. taimen in the Onon/Balj rivers under Mongolia’s extreme seasonal conditions. The maximum longitudinal movements (home ranges) detected were more extensive than previously reported for both species with 45.3 km for B. lenok and 126.1 km for H. taimen. Increased movements were recorded in spring and summer, with individuals entering surrounding tributaries and remaining there for between four and 85 days before returning to the main river channel. The results highlighted the importance of maintaining the integrity and connectivity of tributary habitats for spawning, feeding and overwintering, as well as hydrological and thermal refuges, which will be increasingly important for these species in the region with the pending impacts of climate change. This increased knowledge relating to the spatial ecology of these threatened species can guide the design and implementation of new protective measures such as the introduction of Freshwater Protected Areas (FPAs) across Mongolia. Further research was conducted to gain a broader, multigenerational understanding of the interconnectedness between conspecific populations of H. taimen, B. lenok and T. baicalensis across the major river basins. Both molecular and nuclear markers were used to demarcate the population’s genetic structure and define Evolutionary Significant Units (ESUs) and priority populations for these species across their Mongolian distributions. Across all species, the most prominent pattern was a strong differentiation among major basins with low differentiation and weak patterns of isolation by distance within basins, which indicates high within-basin connectivity between populations, although exact patterns were not completely concordant among species. The extensive results produced from the current scientific research has facilitated the development of a comprehensive set of key recommendations for implementing new, and enhancing existing, management and conservation measures relating to Mongolia’s threatened salmonid species and its emerging recreational fishery. These recommendations include: 1. Establishing a series of Freshwater Protected Areas (FPAs) throughout Mongolia’s major river basins, with their design and location based upon the spatial ecology and genetic population structure determined by the current research results; 2. Shifting the opening date of the fishing season to encompass the entire spawning period of B. lenok (the fishery’s main target species), which appears to currently not be the case; 3. Adding the blunt-snouted lenok (B. sp.) to the prohibited species list, as it has been genetically proven to be an independent species and has a restricted distribution and low abundance in Mongolia; and 4. Introducing minimum (and potentially maximum) size limits for B. lenok and T. baicalensis, to better protect immature and pre-spawning individuals from being removed from the population. In addition, it is highly recommended to commence fisheries dependent and independent assessments in key river basins and conduct biomonitoring programs (using a bioindicator species) to track toxic heavy metal contamination and identify potential human health risks associated with consuming resident fish species from the more heavily impacted regions. The lack of knowledge of the current fishing regulations by anglers as well as the observed and reported widespread illegal fishing activities demands a wide-ranging angler education program to improve understanding and compliance within the fishery. The future survival of these threatened salmonids and the sustainability of the emerging recreational fishery in Mongolia currently hangs in the balance. However, if these scientifically based recommendations are implemented in full, and can be adequately enforced, then the responsible authorities can take a huge step forward towards reversing the current trends and preserving the country’s imperilled freshwater fish populations and their valuable aquatic ecosystems. Mongolia can be a model for freshwater species conservation and management throughout the region and the world
Die Mongolei befindet sich derzeit in einem rasanten sozioökonomischen Übergang mit tiefgreifenden Veränderungen, die v.a. durch eine Zunahme bergbaulicher Aktivitäten sowie einen Ausbau ackerbaulicher Nutzungen wie auch der Viehwirtschaft angetrieben werden. Derzeit vollzieht sich eine noch nie dagewesene Urbanisierung und ein weiteres Bevölkerungswachstum, das auf die alternde öffentliche Infrastruktur, einschließlich Kraftwerke und Abwasserbehandlungsanlagen, einen zusätzlichen Druck ausübt. Infolgedessen zeigen sich in den weitgehend unberührten Landschaften des Landes, einschließlich seiner riesigen Süßwasser-Ökosysteme, deutliche Anzeichen von Übernutzung natürlicher Ressourcen, Umweltverschmutzung und Artenverlusten. Zukünftig geplante große Staudämme werden neben den bevorstehenden Auswirkungen des Klimawandels die Hydrologie deutlich verändern. So sind bereits deutliche Beeinträchtigungen der Fluss-und See-Ökosysteme erkennbar, insbesondere in Hinblick auf ihre aquatischen Lebensgemeinschaften. Einige der weltweit einzigartigen Fischarten haben bereits erhebliche Bevölkerungsrückgänge erlitten. Eine weitere existenzielle Bedrohung für diese Fischpopulationen ist der rasche und weitgehend un-regulierte Anstieg der Fischereitätigkeiten aus einer aufstrebenden Freizeitfischerei. Obwohl Fischfang und -konsum keine traditionellen Elemente der mongolischen Ernährung oder Kultur darstellen, vollziehen sich diesbezüglich derzeit tiefgreifende Veränderungen. Daher wurden in der Mongolei umfangreiche Forschungsprojekte geplant und durchgeführt, um wesentliche Informationen über diese neue Art der Fischerei zu sammeln und gleichzeitig bestehende Wissenslücken in Bezug auf die räumliche Ökologie und die Metapopulationsstruktur der wichtigsten Zielarten zu schließen. Darüber hinaus zeigten Untersuchungen, dass sich aufgrund des erhöhten Konsums von lokal gefangenen Fischarten aus einem stark beeinträchtigten Einzugsgebiet ein potenzielles Risiko für die menschliche Gesundheit ergibt. Insgesamt ist das übergeordnete Ziel dieser Fischereiforschung, das wissenschaftliche Verständnis und Wissen zu erweitern und letztlich die derzeitigen Managementinstrumente zu verbessern und neue Erhaltungsmaßnahmen zu ergreifen, um die Nachhaltigkeit und Widerstandsfähigkeit der bedrohten Fischartenpopulationen und die aufkommende Erholung zu sichern. Insgesamt wurden zwischen 2011 und 2014 insgesamt fünf fischereibiologische Forschungsprojekte abgeschlossen, wobei die Ergebnisse dieser Arbeiten in Erhaltungs- und Managementempfehlungen münden. Wegen des Mangels an Wissen über die aufkommende Freizeitfischerei wurden Anglerbefragungen in drei Einzugsgebieten durchgeführt, welche fünf wichtige Themen wie Angler-Demographie, Fischereipraktiken, Reisetätigkeiten, Fanggeräte und Kosten sowie Anglerwissen und Meinungen umfassten. Fünfundsechzig Angelgruppen (n = 154 Angler) wurden interviewt und zwei Anglertypen identifiziert: ländliche Angler ohne oder niedrige Einkommen, die in dem Becken wohnen, alleine oder in kleineren Gruppen fischen, häufig für kürzere Zeiten fischen und regelmäßig Fisch verzehren; und städtische Angler, die mittlere bis hohe Einkommen haben, in größeren Städten leben, mehr Geld für Fanggeräte / Ausflüge ausgegeben und typischerweise für mehrere Tage am Stück fischen. B. lenok wurde als die bevorzugte und am meisten gefangene Zielarten der Fischerei identifiziert. Die Ergebnisse der Anglerbefragungen bestätigten den erhöhten Fischkonsum im Kharaa-Einzugsgebiet, das aufgrund der weit verbreiteten Schwermetallverunreinigung aus der Vergangenheit und den gegenwärtigen Bergbauaktivitäten als potenzielles Risiko für die menschliche Gesundheit identifiziert wurde. So wurden Schwermetallverunreinigungen im Flusswasser, Sediment und fünf konsumierten Fischarten an 11 Standorten im Einzugsgebiet untersucht. Schwermetalle zeigten sich in allen fünf Stichprobenarten, wobei der maximale Muskelgehalt von Cr, As, Hg und Pb in Fischen aus dem Mittel- und Unterlauf festgestellt wurde, während Zn in B. lenok in den Oberlaufregionen stark erhöht war. Der erhöhte mediane Gehalt an Cr, Cu, Hg und Pb nahm mit trophischer Ebene zu, wobei die Bioakkumulation von Hg die größte Bedrohung für die menschliche Gesundheit darstellte, wobei über 10% aller Fischproben den international empfohlenen Schwellenwert für Hg im verzehrbaren Fischgewebe überstiegen (> 0,5 μg g-1 ww). Diese Bioakkumulation in residenten Fischarten könnte zu chronischen Intoxikationen bei Menschen führen, die sie regelmäßig konsumieren und zusätzliche Exposition gegenüber anderen Kontaminationsquellen haben, z.B. im Goldbergbau. Es wurden weitere zwei Projekte durchgeführt, die eine passive akustische Telemetrie zur Beschreibung der räumlichen und zeitlichen Autökologie, des Lebensraumnutzens und des Verhaltens von B. lenok im Eroo River und H. taimen in den Flüssen Onon und Balj unter den extremen Klimabedingungen der Mongolei verwendeten. Die maximalen Längsbewegungen (Heimatbereiche) wurden -umfangreicher als bisher angenommen- für beide Arten wurden auf 45,3 km für B. lenok und 126,1 km für H. taimen ermittelt. Im Frühjahr und Sommer wurden erhöhte Bewegungen aufgezeichnet, wobei die Individuen in die umliegenden Nebenflüsse eintraten und dort zwischen 4 und 85 Tagen verblieben, bevor sie zum Hauptfluss des Flusses zurückkehrten. Die Ergebnisse zeigen die Bedeutung der Aufrechterhaltung der Integrität und der Konnektivität von Nebenflüssen für Laichen, Nahrungssuche und Überwinterung sowie hydrologische und thermische Schutzräume, die für diese Arten in der Region mit den anstehenden Auswirkungen des Klimawandels zunehmend an Bedeutung gewinnen werden. Die verbesserten Kenntnisse der räumlichen Ökologie dieser bedrohten Arten kann die Gestaltung und Umsetzung neuer Schutzmaßnahmen wie Süßwasser-Schutzgebiete in der Mongolei wissenschaftlich fundieren und leiten. Weitere Untersuchungen wurden durchgeführt, um ein breiteres, multigenerationales Verständnis der Zusammenhänge zwischen den konkreten Populationen von H. taimen, B. lenok und T. baicalensis über die großen Flusseinzugsgebiete zu gewinnen. Sowohl molekulare als auch nukleare Marker wurden verwendet, um die genetische Struktur abzugrenzen und definieren, so z.B. evolutionär signifikante Einheiten (ESUs) und eigenständige Populationen für diese Arten einschließlich ihrer räumlichen Verteilung in der Mongolei. Über alle Arten hinweg war das deutlichste Muster eine starke Differenzierung zwischen den großen Becken mit geringer Differenzierung. Dem gegenüber stehen schwache Muster der Isolation durch die Distanz in den Becken, die eine hohe einzugsgebietsinterne Konnektivität anzeigen, obwohl exakte Muster nicht vollständig unter allen Arten übereinstimmten. Die Prioritäten der Erhaltung müssen sich auf die Verbesserung des Schutzes der vorrangigen Bevölkerungsgruppen innerhalb jeder Art und ESU konzentrieren, um die begrenzten verfügbaren Ressourcen für die Arten- und Populations-Erhaltung und fischereiliche Bewirtschaftung in der Mongolei zu maximieren. Die umfangreichen Ergebnisse aus der aktuellen wissenschaftlichen Forschung ermöglichten die Ableitung umfassender Empfehlungen für die Umsetzung neuer und die Verbesserung der bestehenden Management- und Erhaltungsmaßnahmen in Bezug auf die bedrohten Lachsarten der Mongolei und die aufkommende Freizeitfischerei. Diese Empfehlungen beinhalten 1.die Gründung einer Reihe von Süßwasser-Schutzgebieten (FPA) in den großen Flussgebieten der Mongolei auf der Grundlage der räumlichen Ökologie und der genetischen Bevölkerungsstruktur, die durch die aktuellen Forschungsergebnisse untermauert wird; 2. Eine Verschiebung des Eröffnungstermins der Fangsaison, welche im Gegensatz zur aktuellen Praxis die gesamte Laichzeit von B. lenok (die Hauptzielspezies der Fischerei); umfassen sollte; 3. Hinzufügen des Stumpfschnauzen-Lenok (B. sp.) zur Liste der besonders geschützten Arten, da er sich als eine genetisch unabhängige Spezies erwiesen hat, welche eine begrenzte räumliche Verteilung und geringe Populationsdichte in der Mongolei hat; und 4. Einführung von minimalen (und potentiell maximalen) Körpergrößenbeschränkungen für B. lenok und T. baicalensis, um die unreifen und heranwachsenden Individuen besser vor menschlichen Einflüssen zu schützen. Darüber hinaus empfiehlt es sich dringend, in den wichtigsten Flussgebieten fischereilich genutzte und nicht genutzte Fischpopulationen zu erfassen und Biomonitoring-Programme (unter Verwendung von Bioindikator-Spezies) zu implementieren, um toxische Schwermetallverunreinigungen zu verfolgen und potenzielle Risiken für die menschliche Gesundheit zu identifizieren, die mit dem Verzehr Fischen aus beeinträchtigten Regionen einhergehen. Schließlich verlangt das Fehlen von Kenntnissen über die derzeitigen Fischereiverordnungen durch Angler sowie die beobachteten und gemeldeten weitverbreiteten illegalen Fischereitätigkeiten ein weitreichendes Angler-Bildungsprogramm, um das Verständnis und die Einhaltung fischereilicher Regelungen zu verbessern. Das künftige Überleben der bedrohten Salmoniden und die Nachhaltigkeit der aufkommenden Freizeitfischerei in der Mongolei sind eng miteinander verbunden. Sofern die hier dargestellten wissenschaftlich fundierten Empfehlungen in vollem Umfang umgesetzt werden und hinreichend kontrolliert werden können, würden die zuständigen Behörden einen großen Schritt in Richtung der Umkehrung der aktuellen Trends machen und die gefährdeten Süßwasserfischpopulationen des Landes und ihre wertvollen aquatischen Ökosysteme bewahren. Die Mongolei könnte dann ein Modell für die Erhaltung und Bewirtschaftung von Süßwasserarten in der ganzen Region und der Welt werden

Approximately 65 vessel reefs have been deployed intentionally in Broward County, Florida since 1982. The purpose of these deployments was to enhance fish stocks for recreational fisheries and sport divers. The other main goal was to reduce pressure on heavily exploited natural reefs. Several studies have been conducted at both artificial and natural reef sites in the area; however, none of these have focused on nocturnal fish assemblages (Ferro et al., 2005; Arena et al., 2007). The goal of our study was to characterize nocturnal fish assemblages on vessel and natural reefs in Broward County. This data, in addition to the existing diurnal data, will provide a more comprehensive understanding of fish assemblage structure on artificial and natural reefs. Comparisons among vessel and natural nocturnal fish assemblages and previous diurnal studies were made. Abundance was greater on diurnal natural and vessel reefs when compared to nocturnal. Abundance was also greater on nocturnal vessel reefs than nocturnal natural reefs. The twilight period on vessel reefs was characterized by high abundance of piscivores and a significantly greater abundance of grunts than during the nocturnal period. The abundance of grunts supports their movement during this time to surrounding sand flats to feed. The vertical relief of the vessel reefs seemed to appeal to an abundance of pelagic fishes as well as planktivores. Distinctly different fish assemblages were seen between nocturnal natural and vessel reefs, as well as between diurnal and nocturnal natural reefs and vessel reefs. Fisheries-important fishes were more abundant during the day, but also more abundant on vessel reefs than natural reefs. Although vessel reefs do not mimic the natural reefs studied or support the same fish assemblages, they are providing habitat for diverse nocturnal fish assemblages.

A computer simulation model was developed to examine the effects of various levels of alewife densities, harvest, and bycatch rates on yellow perch Perca flavescens relative densities in Indiana waters of Lake Michigan. The model utilized STELLA® Research software to develop the age-structured population model to include measured or predicted biological characteristics of density-dependent growth, recruitment, and mortality.The model was validated by simulating historically documented yellow perch catch per unit effort (CPUE) from 1984 - 1998. A strong linear relationship (R2= 0.70) between the model predicted CPUE values and the actual CPUE values was found. Twenty year model projections were performed using 1998 yellow perch trawl CPUE as starting values. Alewife abundance was established as either constantly high, constantly low, or allowed to fluctuate randomly and forecasts made used the average of 100 runs. Harvest was imposed on the yellow perch population at 20, 40, and 60% rate levels for fish >_ 200 mm coupled with bycatch at20, 40 and 60% rate levels for fish ranging from 165 - 200 mm.Alewife abundance was the major factor determining the relative abundance of the yellow perch population. On average, constantly high alewife abundance with no harvest or bycatch resulted in projected continuing suppression of yellow perch abundance from 1998 levels. The model predicted the population to rebound using constant low and random alewife abundance with no harvest or bycatch to approximately 1,100 fish/h and 700 fish/h, respectively.The model revealed harvest to have a generally negative impact on the yellow perch population. Increasing harvest and bycatch rate levels resulted in the suppression of projected increases in yellow perch relative abundance. Additionally, increasing harvest and bycatch rates resulted in greater predicted declines in yellow perch abundance.
Department of Biology

Several population characteristics were calculated for smallmouth bass Micropterus dolomieui and rock bass Ambloplites rupestris populations on the west fork of the White River in Randolph, Delaware, and Madison counties, Indiana and were compared to other populations. When compared to streams of similar size in Indiana that were sampled with the same methods, relative abundance (CPUE) of smallmouth bass was average (18.9-35.0 fish/hour) while rock bass were two to ten times more abundant (44.3-53.0 fish/hour). Age analysis and back calculation of length at age were only performed for smallmouth bass. These results indicated strong year classes were cyclical and smallmouth bass growth was above average for Indiana streams, but average for streams of the Midwest. Proportional stock density values were average for smallmouth bass (28-39%) and slightly below average for rock bass (17-33%). Strong weight-length models were also found for both species and relative weight values were optimal.
Department of Biology

Surface mucus of a freshwater fish, Alburnus alburnus (bleak), caught from Lake Mogan, situated in south of Ankara, was collected in different seasons. The total cultivable bacteria were enumerated by spread plate method on nine different media. Bacteria were isolated based on colony morphologies and pigmentation. A total of sixty bacterial isolates obtained. The mucus-dwelling bacteria were first tested for resistance against ampicillin and kanamycin
then streptomycin and chloramphenicol were added to the experimental set up. The resistance levels of isolates were determined in terms of four antibiotics by tube dilution method. About 90% of the isolates were resistant to chloramphenicol, about 84% to kanamycin, about 88% to streptomycin and about 98% to ampicillin. These high levels of antibiotic resistance are rather interesting from a standpoint that the lake has no record of antibiotics exposure of any sort. The plasmid isolations were carried out to determine if the multiple antibiotic resistance could be attributed to plasmids for starting assumption. But we found no direct relationship between the presence of plasmids and multiple antibiotic resistance. Our study indicated that multiple antibiotic resistance at high levels is among the current phenotypes of the fish mucus-dwelling bacterial populations in Lake Mogan.

The mucus-dwelling bacteria previously isolated from the surface of a freshwater fish species (Alburnus alburnus from Lake Mogan, Ankara), were studied to discover their cobalt resistance. The minimum inhibitory concentrations (MIC) were determined for a total of thirty six bacterial isolates. The results of the resistance studies led us to design experiments on adaptation to cobalt and subsequent memory retention. Three selected isolates were exposed to an inhibitory cobalt concentration as a mixed culture and individually. The delayed formation of colonies along with competitive exclusion of one of the isolates in the mixed culture were recorded. The delay for colony formation was followed up for liquid culture conditions. After some of our isolates acclimated to cobalt and started to exhibit constant time of growth period, it is assumed that they were adapted. We regarded adaptation as a result of memory formation. Next, we did a further study to find out how long this memory could be retained via serial multiple passages in cobalt free medium. We expressed our observations quantitatively by measuring the growth by using spectrophotometer and by performing viable counts. Interestingly, where there was a high CFU, the photometric values were very low. We interpreted the finding such that the presence of cobalt above tolerance limits were causing size reduction in the cells. So that their presence was underestimated by optic devices in visible range. Our study hinted that freshwater bacteria was adapting cobalt in a memory based mechanism and able to retain this memory for some time.

Alien fish have been implicated in the decline of Rana draytonii (California red-legged frog) and Pseudacris regilla (Pacific treefrog) populations. Micropterus salmoides (largemouth bass) is a common sport fish that has been introduced into the sympatric range of these two anuran species; however, no studies have investigated the individual influence that this alien fish has on these two species. I conducted M. salmoides control or eradication experiments during a four year study in two ponds within the Transverse Mountain Range of Santa Barbara County, California. Changes in the densities of all life stages of R. draytonii and P. regilla were assessed through repeated visual encounter surveys. In response to the manipulations of the M. salmoides populations there was an increase in the density of both species. For R. draytonii, this salient increase in density was recorded in the larval and metamorph life stages. For P. regilla, a slight, yet steady increase in the density of adult, metamorph, and larval life stages was recorded. My results suggest that M. salmoides can be controlled or eradicated from lentic waterbodies and provides reasonable evidence that the negative effects of this species on R. draytonii and P. regilla populations can be minimized or reversed. The reversal of these effects may translate into increases in the densities and potential recruitment of these two native anurans. Therefore, my results provide tentative support that the control or eradication of M. salmoides where they cohabitate with these two species may be a viable conservation measure for R. draytonii and P. regilla populations. Since my study was performed at a very local scale and all results are strictly observational and descriptive, additional studies should be performed at a larger spatial scale and buttressed with controlled laboratory and field enclosures experiments to identify the causal factors responsible for the identified patterns.

A procura de água conduziu à necessidade do represamento do recurso e à construção de barragens e açudes que comprometem a conetividade longitudinal e as movimentações das populações de peixes migradores. Este efeito pode ser mitigado pela construção de Passagens para Peixes (PPP). O presente estudo, realizado no âmbito do Programa de Monitorização da Passagem para Peixes do Açude-Ponte de Coimbra, entre Janeiro e Junho de 2013, pretendeu otimizar a metodologia de contagem visual dos peixes que utilizam o dispositivo e relacionar essa utilização com variáveis abióticas. A utilização da PPP por parte das espécies diádromas foi sobretudo regulada pelo caudal. Para as espécies potamódromas, além do caudal outros preditores foram identificados como a temperatura e a turbidez. O pico de utilização da PPP foram os meses de Março e Abril para a lampreia-marinha, Abril e Maio para o sável, savelha e barbo do Norte e entre Janeiro e Abril para a boga-comum; ### ABSTRACT: Monitoring of Açude-Ponte fishway in Coimbra: Optimization of counting methodology. Water demand has led to the need of the impoundment of the resource and the construction of dams, that compromise the longitudinal connectivity of the rivers, impacting the populations of migratory fish. This effect can be mitigated with the construction of fishways. This work, that was performed under the monitoring of the Açude-Ponte fishway in Coimbra, and between January and June of 2013, was intended to optimize the methodology of visual counting of the fish, and relate this pattern of use with abiotic variables. The use of the fishway by the diadromous species was mainly regulated by the flow. For potamodromous species, in addition to the influence of flow, other predictors were identified, such as temperature and turbidity. The peak use of the fishway occurred in March and April for the sea lamprey, April and May for allis shad, twaite Shad and Iberian barbel and the period between January and April for Iberian nase.

Fish and shellfish are important sources of protein for the world population. Nearly 50 percent of fish and shellfish products originate from aquaculture, and the rest comes from traditional fishing. The marine stocks are under threat from unsustainable fishing practices. Together with fishing, aquaculture constitutes extra stress on the marine stocks and ecosystems. Aquaculture also causes other environmental side effects. International trade rules do not sufficiently take care of the ecological problems. Voluntary initiatives, like ecolabels, are one way of dealing with the problems. This thesis does an attempt to, from an environmental science perspective, analyze how the fish counters at four ICA Kvantum stores in the Stockholm region work with ecological sustainability issues with regards to fish and shellfish. The overall purpose is to examine the shops’ historical, current and potential future work and to analyze if the work is conducted in a proactive, reactive or in a passive way. The main findings include that the knowledge, sustainability statuses, responsiveness, and changes in time, and the intentions or plans for the future differed a lot between the different shops. Furthermore, many of the investigated potential problem areas seemed to constitute problems in practice. Additionally, it seemed like additional pressure may be needed if the aggregated ecological status should be raised. The research method consisted of case studies with semistructured qualitative interviews and analysis of corporate documents, and a minor quantitative investigation of the frozen assortment at the stores.
Fisk och skaldjur är en viktig proteinkälla för världens befolkning. Nära hälften av fisk- och skaldjursprodukterna internationellt kommer idag från akvakultur (fiskodlingar). Resten kommer från traditionellt fiske. De marina fisk- och skaldjursbestånden hotas i olika grad av ohållbart fiske. Tillsammans med fisket utgör olika former av akvakultur påfrestningar mot fisk- och skaldjursbestånd och de marina ekosystemen. Akvakultur orsakar även andra ekologiska sidoeffekter. Internationella handelsregler tar idag inte tillräcklig hänsyn till de ekologiska problemen. Frivilliga initiativ såsom miljömärkningar har uppkommit och kan eventuellt utgöra en del av lösningarna på problemen. Denna kandidatuppsats gör utifrån ett miljövetenskapligt perspektiv ett försök att analysera hur ”fiskdiskarna” i fyra ICA Kvantumbutiker i Stockholms län arbetar med ekologisk hållbarhet vad gäller fisk och skaldjur. Övergripande syftet är att undersöka livsmedelsbutikernas historiska, nuvarande och potentiella framtida arbete med de ekologiska hållbarhetsfrågorna, samt att analysera om de arbetar utifrån ett proaktivt, reaktivt eller passivt angreppssätt. Huvudresultaten visar att arbetet mellan butikerna skiljde sig mycket med avseende på kunskaper, ekologiska hållbarhetsteman, proaktivitet/ reaktivitet/ passivitet, förändringar över tiden, samt vad gäller intentioner och planer för framtiden. Vidare så verkade flera av de studerade ekologiska problemområdena på olika sätt utgöra verkliga problem. Någon form av påtryckningar verkade vara nödvändigt om butikernas arbete, aggregerat sett, skulle ställas om till en mer ekologiskt hållbar status. Metoden utgjordes av fallstudier med semistrukturerade kvalitativa intervjuer och studier av utvalda centrala dokument från ICA-koncernen relaterade till det tematiska undersökningsområdet. En mindre kvantitativ utvärdering av butikerna frysta sortiment gjordes också.

This thesis studies the Supreme Court decision, Korematsu v. United States, 323 U.S. 214 (1944) and its historical context, using a narrative perspective and reviewing aspects of narrative viewpoints with reference to legal studies in order to introduce the present study as a method of assessing narratives in legal settings. The study reviews the Supreme Court decision to reveal its arguments and focuses on the context of the case through the presentation of the public story, the institutional story, and the ethnic Japanese story, which are analyzed using Walter Fisher's narrative perspective. The study concludes that the narrative paradigm is useful for assessing stories in the law because it enables the critic to examine both the emotional and logical reasoning that determine the outcomes of the cases.

I conducted this study to better understand the greater roadrunner’s (Geococcyx californianus) spatial use, nest site selection, and sexual morphometrics. Data were first collected from a roadrunner population in Fisher County, Texas. I trapped, measured, and removed feathers for sex confirmation through DNA PCR analysis. I then fit the roadrunners with a radio transmitter and released them at the capture site. I captured a total of 10 birds (1 male and 9 females) and triangulated the location of each bird 2-4 times per week from February to August 2011 during the roadrunner nesting season. The data produced a mean minimum convex polygon nesting range of 43.01-ha, a 50% core utilization distributions of 11.88-ha, and an overlap index of 33.05 percent. Habitat selection ratios showed a preference for ridge as well as grassland habitat and avoidance of bare ground and flatland habitats. The location data from west Texas was further analyzed to build a predictive logistic regression model to understand the significant site characteristics in roadrunner land use during the nesting season. It was determined that percent rock (-0.12, P = 0.0001) and percent litter (-0.05, P = 0.0052) were the best predictors in determining actual from random locations. Rock references open area for hunting, transportation as well as ridge habitat. Litter alludes to region below dense stands of shrubs and is used by roadrunners for evasion from threats and as shade for thermoregulation. The measurements from the roadrunners in west Texas as well as museum specimens from across their natural range were combined to develop an easy, inexpensive, and field-relevant sex identification model. The strongest model consisted of bill depth (0.79, P< 0.0001) and bill tip to the back of the head (0.05, P = 0.1573) which were both found to be larger in males. The final portion of this study concerned roadrunner nest site selection. Data were collected in Wilbarger County, Texas from May 2006 to October 2009. A predictive logistic regression model of nesting locations determined that mesquite nesting tree (-0.89, P = 0.0064), oval tree shape (1.58, P = 0.0118), mesquite density (-0.004, P = 0.0080), and topographic edge (1.37, P = 0.0027) were the best predictors in determining actual nest sites from random locations.

碩士
國立高雄海洋科技大學
漁業生產與管理研究所
94
This study focus the tourists participate local recreational fishery in WU-SHI port I-lan County, to determine the satisfaction level of this local multi- characteristics industry, And which important factor will influences or impacting satisfaction. Self-reply questionnaires and purposive sampling were administered to whale –watch tourists in harbor zone of WU-SHI port, survey sampling duration from July 2004 to January 2005. A total 385 completed questionnaires were collected.（representing usable yielding rate 63.83 %）.therefore, The survey data quality treatment by statistical program SPSS, version 10.07. The collected data basic statistical value following below ,the majority tourists who participate whale-watch trip were ” male” （56.9%）,distribute over the range of” age” were 20-30 years（44.6%）,Occupation mainly were “student”（30.4%）,Highly educated（36.4%）,unmarried（63.9%）.For travel characteristics, tourists pardon categories majority both wrer workmate, friend, classmate, (37.8%) , family’s type(31.5%). transportation categories mainly were personal vehicle(62.3%). Empirical results indicate the entire tourists ‘s satisfaction were medial level（mean score 3.89），and intense impacting tourism satisfaction by four factor, ” worthily expenditure “,”server’s attitudes” “the safety coefficient of whale-watching boat and comfortable”,” the whale-watching boat deck space design and plan. Consider this four impacting factor certainty decide that tourists satisfaction.(R2 =0.498)

碩士
國立高雄海洋科技大學
漁業生產與管理研究所
105
In this study attempts to research the sustainable use of resources under the premise, in order to restore fishery resources, return the moved out population back to hometown, help local fishermen to raise their livelihoods, and assist in fishing village transformation with increasing the fishing village activation, hoping to provide a both friendly and marine ecologically environment that could be implemented, environmental protection, promoting the fishing village eco – on high added value and " Life, Production, Ecology" three ecologically integrated fisheries development opportunities. Study area was selected of Fuguodun in Jinmen County, analyzing the feasibility of Set-net fishery and cage aquaculture in Fuguodun sea area of Jinmen County. Through investigation on environmental hydrological data in site, fish biological phase investigation, the seabed isobaths measurement, measurement of the velocity and flow of the ocean, sediment sampling photography, and fish grounds positioning etc. Comprehensive collation and analysis to complete the mapping and assessment survey of sea area of fishery right. According the results of investigation, analysis are suitable for part of the island planning fishing point and in the northeast is can be planned to cage aquaculture. (100 hectares) ; the other natural reefs in the sea, with biodiversity, in order to effectively conservation of marine ecological resources, will also part of the sea planning As a marine conservation area. It is recommended that the Government except planning cage aquaculture, but also need to keep the resources with biological characteristics including fish and algae good breeding ground, designing the Marine Protected Areas as nursery ground, and combined with Kinmen local culture and fishery activities to increase fishery development. Hoping for the development of Jinmen County along the coast of the townshipcould bring practical benefits, in addition to raising fishermen's income ,constructing the local mariculture or marine resources sustainable use of the industry, facilitating the transformation to be the rich fishing village, and achieving the goal of sustainable use of marine fishery resources.

碩士
國立澎湖科技大學
服務業經營管理研究所
96
Various items in the development of Penghu tourism belong to leisure fisheries, which are often stretched from conventional fishing methods. In recent years, the most popular and fast-developed is the recreational experience on offshore platforms. This is a kind of leisure fishery evolving from cage aquaculture, which becomes a comprehensive leisure entertainment including cobia feeding, catering, water activities, and oceanic scenery. This research probes into the current status regarding the development of offshore platform in Penghu County, recreational experiences of tourists who participate in activities on offshore platforms, service quality and satisfaction, as well as to examine whether the experience attribute and satisfaction will conform to Sweet Spot Theory of Experience Economy Model. From August to September of 2007, three major service providers were chosen, and a total number of 628 questionnaires were sent to their visitors. 511 copies of questionnaires were retrieved and the valid retrieval ratio was 81.37%. According to the statistic analysis, Penghu tourists are mainly categorized as the young, the single, and students without income. Per characteristics of tourists except the marriage status, perception and satisfaction towards the service quality on offshore platforms do not significantly differ; tourists have higher appreciation for spirit of service and expertise of the staff. Tourists’ leisure motivation can form two dimensions as Intrinsic Motivation and Extrinsic Motivation, but their different motivations do not significantly vary the perception of service quality. Although four different dimensions of recreational experience (Entertainment Experience, Education Experience, Escapist Experience, and Esthetic Experience) have positive correlations with the perception and satisfaction of the service quality, yet Escapist Experience, as a regression coefficient, does not reach a significant correlation after being examined by Multiple Linear Regression Analysis. This may verify that four-dimension model of Experience Economy is not suitable to the recreational experience on offshore platforms, and Sweet Spot Theory is not always tenable.

碩士
國立臺灣海洋大學
環境生物與漁業科學學系
107
The purpose of this study is to use the field investigation method and SWOT analysis method to understand the current situation and problems of the recreational fisheries and fishing villages in Changhua County, and to study the strategies and measures suitable for the development of recreational fisheries in Changhua County and the regeneration of fishing villages through SWOT cross-analysis.The results of the study are summarized as follows: 1. The marine fishery in Changhua County has only coastal fisheries, and there is no offshore and far sea fishery. The coastal fishery mainly has spur net bottom trawls, one, and the hand net and the vertical set net, etc. It is irrelevant to open fisheries. The latter three types of shallow sea culture with intertidal zone may develop into recreational fisheries; the completion of Changhua Fishing Port in the territory will solve the problem of Wanggong and Lunweiwan fishing port accumulation, and it is also expected to be developed as an offshore wind farm. There are seven protected reef fishing areas in Changhua County, and the fish stocks are continuously discharged every year. This is positive for the development of recreational fisheries in the future. 2. The government is aging and decreasing in response to the population of fisheries and fisheries, and the promotion of fisheries. In the recent years, the fishing industry has also promoted the regeneration of fishing villages and regional revitalization in an effort to activate the fishing villages in the coastal areas. However, due to the failure to cooperate with the fishing associations of the largest people's groups in the township, the promotion results are not good. 3. The current types of recreational fisheries in Changhua County are: boat fishing, dike fishing, squid fishing, and Hanbao cooperative farm. Yanzhan Shrimp Conservation Area, Shengang Beach Ox Cart, Fishery Fisheries Culture Center, Wang Gong Yi Art Culture Center, Fubao Education Ecological Park, Wang Gong Fishing Fire Festival, etc. 4. The fishing village regeneration plan of the current line west and top sticky community in Changhua County has been It is approved that another six communities are participating in the Bacon project. The problem of promoting the regeneration of fishing villages in Changhua County is (1) the population of the fishing village is aging and the implementation of the recycling policy is difficult. (2) The government's funds are mostly used for the maintenance of fishing port facilities and surrounding facilities. (3) The fishing village regeneration plan should be promoted by the Changhua District Fisheries Association, which understands the local fishing environment. However, it is a pity that it has not been asked to participate in the assistance and it has become a township public office. 5. The common points of recreational fishery and fishing village regeneration are (1) improving the quality of life of fishermen; (2) requiring local government fisheries and fishermen to jointly promote; (3) attracting young people to return home, narrowing the gap between urban and rural areas, etc. As the mainstay of the development of recreational fisheries combined with fishing villages in Changhua County, it is conducive to the promotion of recreational fisheries in the Changhua area combined with the regeneration of fishing villages. 6. The SWOT cross-analysis has developed (1) improving the old recreational fishery facilities and the fishing village environment; The University Social Responsibility Practice Program (USRPP) promotes the regeneration of fishing villages; (3) the construction of the Changhua area recreational fishery marketing explanation system; (4) the four strategies of sustainable development of the marine ecological environment, and the formulation of 12 measures to benefit the various Implementation and promotion of the strategy.

碩士
國立屏東科技大學
農企業管理系所
97
Not only archival research but also field study is applied by this research. The subject is to investigate the tourists traveling leisure fishery scenic spots in Hualien. There are 420 questionnaires are submitted, and the effective sample size is 390. The result reveals that the tourists prefer scenic resources and natural resources among all resource characteristics of Hualien County. Concerning leisure demands, the tourists especially put emphasis on traffic convenience, safe public facilities and accommodation. The result of field study can be concluded as bellow: the assumption that tourist resource characteristics relate to leisure services partially holds as the assumption that tourist traveling characteristics is noticeably different from leisure service demands holds. The results of research are concluded as below: 1. With plentiful leisure fishery resources, Hualien County should constructively develop and display its unique characteristics. 2. Since fresh seafood taste and whale-watching are still tourist’s first priority, dynamical experiential activity should be subsumed in addition to marketing. 3. Improving experiential pattern and marketing will effectively increase visit rate and return rate. 4. Accommodation, repast, traffic, public facilities and management are emphasized by tourists. Therefore, not only maintaining reasonable price but also supplying safe and comfortable environment is the key point for management. 5. According to different tourist’s demands, the correspondent tour plan should be provided. 6. To make good use of resources and industry characteristics, various experiential activities should be developed to attract tourists. 7. Government should hold large-scale and characteristic industry culture activities. 8. In combination with local resource characteristics, such as boating and thermal spring, the package tours with leisure fishery activities should be promoted. Overall, it is believed that Hualien leisure fishery will be able to create the opportunities for sustainable development as firms and government cooperatively endeavor to work on it.

This thesis employs Karl Polanyi’s concept of the double-movement of capitalism to trace the trajectory of a social movement that arose in response to capitalist transformation in the fishery of Kanyakumari district, south India. Beginning in the 1980s, this counter-movement militantly asserted community control over marine resources, arguing that intensified production for new markets should be subordinated to the social imperatives of subsistence and equity. Two decades later, the ambition of “embedding” the market within the community had yielded instead to an adaptation to the market in the language of “professionalization,” self-help, and caste uplift. Polanyi is useful for identifying the constituency for a counter-movement against the market, but tells us little about the social or political complexities of constructing such a movement. To locate the reasons for the decline of the counter-movement in Kanyakumari, I turn therefore to an empirical observation of the civil society within which the counter-movement arose. In doing this, I argue against Partha Chatterjee’s influential view that civil society as a conceptual category does not apply to “popular politics in most of the world,” and is not useful for tracing non-European, post-colonial, and subaltern modernities. By contrast, my case shows the presence of civil society – as a sphere of autonomous and routinized association and publicity – among subaltern groups in rural India. I argue that it is precisely by locating the counter-movement of fishworkers within civil society that one can map the multiple negotiations that take place as subaltern classes are integrated into the market, and into liberal democracy, and explain the difficulties of extending and sustaining the counter-movement itself.

碩士
臺南師範學院
鄉土文化研究所
90
Ecological Model of geography bases on ecology to integrate subjects about nature and cultural factors to achieve an objective of ecology research, that present local characteristics of interactions between humans and local geography, local space activities people work, and some special forms, meanings, and functions on it. The main themes of the research take a point of view at fishery to explore the origin, transition and process of cultivation fishery at coastal areas of Yong-An Village, Kaohsiung County, Taiwan. This research descripts a lot of true stories and records about nature environment at that time, land exploited in different period and by bibliography citations, interviews, and realistic investigations. This research provides critical finding can be listed as follows: (1) Space transition: cultivation fishery developed form south to north since Ching dynasty, they spread from internal coastal areas to surroundings, and then appear totally space transition due to join alluvial soil form Ah-Con-Dem river, too. (2) Development foundation: based on combined topographical advantages and technique of all the year cultivating. (3) Changing on cultivation industry operation style: (a) cultivation pool sources had transited from rain water (depends on nature weather) to seawater (control by human) to keep the sources of water stably and be continuous. (b) cultivating fishes had transited from a shallow pool to a deep pool to prevent fishes died and live through the winter. (c) cultivating fishes had transited from coarsely raising to intensively raising to make more good quantity of output in the unit cost. (d) sources of fish fry had transited from nurtured naturally to nurtured artificially to get more elasticity in raising time and they would no problem at fish fry acquiring. (e) cultivating fishes had transited from traditional low-grade raising to a higher grade raising to get more value and higher price at economic benefits. (4) The Impact and problems of cultivation fishery developing: lacked for integrated cultivation fishery plan and public facilities, and some problems like landscape disorderliness and stratum sagging issues that is all they had to cope with.

碩士
義守大學
土木與生態工程學系
102
Government shares huge budget into the infrastructure to improve living condition in Taiwan. But there are some complaints or unexpected contruction failures due to worse implementation during construction. In order to monitor these problems, Public Construction Council under Executive Yuan set up the “regulation for the public work quality auditing system”. This system intends to improve the quality of public work on the document management and performance at the construction process for more than 20 years. There are many positive effects and comments about the auditing system, but there still have some negative expression on this system due to its disturbing the traditional way of construction. This is the very initial motivation of this research, and expects to summarize some solid suggestion for improving this auditing system in the future. In order to focus the topic of auditing system, specific type of engineering is assumed to be the studied in this dissertation. More than 50 auditing records about the fishery engineering at Pin-tung County, are collected for finding out the common faults during auditing process for the years from 2009 to 2013. And more than 100 expertises are invited to fill the questionnaire in order to summarize the common comments or expectation onto the auditing system. As to the case we collected, results show that the auditing grade has no significant relation with the contract amount. And there is also no obviously linkage between the auditing grade and fault points recorded by the auditing members. The results also show that same defeated points are happened frequently, which indicate auditing can’t change habitat domain on the elementary workers. As to the questionnaires from expertises selected, results show that most of them have no negative view on this auditing system. Auditing members are justice for penalty points no matter what the engineering scale and its authority according to the result of questionnaire. And finally, most of them propose that the penalty rules and defeated records should be refined to fit the scale and type of engineering.

碩士
國立高雄海洋科技大學
漁業生產與管理研究所
99
Abstract The object of study is investigation of set-net fishing ground and to make a fishery integration plan in coastal waters off Fang-Shang, Ping-tung County. It’s aim focuses on analyzing and exploring climate (ocean) conditions, catch data, investigation of oceanic environment and SWOT policy of Fang-Shang Township. The results are excerpted as follows: 1. Investigation of climate conditions－ The air temperature of Fang-Shang coastal waters and sea surface temperature are suitable for set-net installed and cage aquaculture. Serious influence to Fang-Shang Township is southwest typhoon, which must be taken precautions. Tide ranges are moderate or slight. Fishing gear would be designed and installed which must be considered to check the tidal range. 2. Investigation of catch data－ CPUE distribution of model fishing ground which indicated that annual catch of the sample fishing ground had grown stably, and month of peak catch in May every year. In last ten years, average proportion of dominant species reached 71.38%, and which 35 species were captured. Over the years, according to statistical analysis, Index of Diversity (H') of dominant species was between 1.47 and 1.80, and Index of Evenness (J') was between 1.26 and 1.80. Besides, variance is low(CV＝0.27). Obviously, fish migration stability is good. From evaluation of the sea area, fishery source is abundant and stable, economic fish species are numerous. 3. Investigation of oceanic conditions－ Oceanic conditions, including salinity and sea temperature were also appropriate (average is 26.3psu~26.7psu；28.4℃~31.9℃,respectively), which would not affect operations of set-net fishing gear and cage aquaculture. Main current directions were ESE and SSE, average current speed is 7.64cm/s (ca. 0.15kts) which would slightly affect operations of set-net and cage aquaculture. Depth range over 25m~50m where is suitable site for installing set-net. Seabed sediment of silt matrix in depth 18.5m~32.2m was extremely good for installing set-net. Furthermore, nutrients of neighboring estuary ocean is rich. The items-Oxygen- dissolved, BOD, Ammonia, Ptotal amount and Water Quality were reached to A degree. Oceanic environment is suitable to cage aquaculture and set-net fishery. 4.According to results of SWOT and TOWS matrix analysis, combination of set-net fishery and cage aquaculture, which may prompt ocean capacity, save management cost, manage ocean ecotourism and leisure amusement, experience fishery activities, increasing employment opportunities, multiple fishing income. It is high additional-value industry of diversification management type and multifunctional society characteristics, which includes potential idea of 『Conservation、Recovery、Education』, and sustainable ecotype fishery of 『Livelihood、Production、Ecosystem』. By way of overall assessment of this study, set-net fishing ground and fishery integration plan in Fang-Shang Township was carried out. Furthermore, those will be important references for industry, government, academic circles for future development of marine industries in Fang- Shang coastal waters.

碩士
世新大學
觀光學研究所(含碩專班)
101
The situation of Taiwan's fishing industry has changed, many fishing ports have been transformed into leisure fishing ports, with the gradual depletion of fishery resources and changes in Taiwan's overall state of the economy. In recent years, Taoyuan County Yongan Fishing Port have become a leisure fishing port of Taoyuan area, with the development of tourism and leisure industry. The main purpose of this research is to study the factors of traditional agriculture and traditional fishing transformed into recreational fishing, and the local residents’ feelings and attitudes of quality of life, in Yongan Fishing Port area. This study used qualitative research methods in depth interviews and participant observation method. Explore the impact of tourism development and the changes in quality of life for local tourism industry operators and residents, through field observations and interviews with 26 local residents. 　　The result indicated that factor of transformation is lower incomes in agriculture and fisheries, lack of rural construction, the outflow of labor, tourism development. Tourism development brought both positive and negative impacts, but residents did not produce feelings of aversion. Instead, the local residents have greater expectations of tourism development.

碩士
南華大學
旅遊事業管理學研究所
94
This research first carries on the tourist market survey, understands the tourist to Yunlin County coastal area leisure fishery present situation satisfaction, mainly includes the characteristic fishery resources, the service system, the transportation system and the marketing content and so on four aspect degrees of satisfaction, thus understands in the Yunlin County leisure fishery development the bottleneck question and the extant insufficiency. The findings showed that: 　 1.In tourist basic characteristic, the feminine quantity is equal to the male; Age mostly in 31~40 years old; The professional Israeli troops, male, teach to account for the proportion to be biggest. 　 2.In traveling characteristic aspect, likes the summer going to travel; The association traveling and goes to the traveling to be half and half voluntarily; The resident time are most by 1~2 day-long tourists. 　 3.Tourist to characteristic fishery resources satisfaction, “Feels and “the famous specialty by the fishery cultivation visit overall” Famous product and the good food appraisal” high, But “picks to the sightseeing catches, fishes “the whole feeling which and the waters amusement and rest unique feeling” and the fishing village community constructs” then low. 　 4.Tourist to service system satisfaction universal somewhat low, by “fishing district service personnel''s service consciousness”, “fishing district each kind of convenient facility consummation degree”, “in fishing district clean neat degree” the degree of satisfaction is lowest. 　 5. Tourist to transportation system satisfaction universal somewhat low, in which “conveniences which “the landscape address and the transportation convenience and in the fishing district stops” by the fishing district in” for lowest. 　 6.The tourist to sells content satisfaction also universal somewhat low, In which “promotes sales the active content take the fishing district in”, “the fishing district jobholders'' quality and ability” and “the fishing product fixed price” as lowest. 　 　　At the same time, unifies the expert about the traveling plan aspect precious suggestion, as well as in the full consideration local fisherman''s life shape, the idea manner possibly to plans has the influence under the premise, by network ponder construction, full display innovative ideology, do take the creativity and the vigor as the starting point, proposed the fishing village community builds the leisure fishery to be supposed from following several obtaining: 　 1. Goes sightseeing the fishery and the correlation industry whole development way, the strengthening goes sightseeing the amusement and rest development. 　 2. The development amusement and rest core region with the multi- cores region, enable various amusement and rest resources characteristic display effect, the combination to have amusement and rest of foothold development coverall software tourist itinerary one by one the characteristic. 　 3. Using the place superiority, the development subject villages and towns and the coordinate subject villages and towns grind draw up the tourist itinerary plan. 　 4. The expanded scenery specific area scope, enhances characteristic of and the rank the scenery specific area, strengthens the marketing in view of the fishing district amusement and rest resources characteristic, and aims at the different consumer community to carry on the difference market marketing, the advertisements propaganda and the implementation strategy.

碩士
國立東華大學
臺灣文化學系
104
Set-net fishery is a type of coastal fishery where set-nets are placed on fish routes to draw in migratory fish schools. During the Japanese Colonial Period, the Japanese discovered large numbers of bullet mackerel and bullet tuna migrating along the Hualien coast. Set-nets used for catching bonito were therefore introduced to Hualien and the earliest local trials were conducted at Chisingtan Bay in Xincheng Township. The rise of the bonito industry meant there was a thriving bonito processing industry here at one time as well, making it the perfect research field for this paper. Most of the literature on set-net fishery and bonito processing focuses on the technology. Relatively few studies examine their cultural and social aspects. This paper proposes to define the set-net fishing areas and bonito processing factories around Chisingtan Bay as the research field. Through past literature, in-depth interviews and observations, this paper will first trace the evolution of the set-net fishery and bonito processing in the area since the Japanese Colonial Period. This paper will then observe the people who depended on these industries to see if their lifestyles and working patterns have changed over time, and examine the reasons why fewer people now work in these two industries. Research found that the set-net fishery at Chisingtan Bay used four types of nets over time: “Bonitos net” (鰹待網), “triangular set net” (大敷網), “kettle net” (大謀 網), and “impounding net” (落網). The area has the highest concentration of set-net fishery and bonito processing industry in Hualien. triangular set net and impounding net were the two most important phases and the shift from triangular set net to impounding net involved changes in the size and material of net gear, merchandise and method of operations. There were also differences in the interactions between fisheries and villagers. The amount of net gear gradually decreased due to constraints on set-net fishery rights, changes in the ocean environment, high risk and management difficulty. In the earlier years, most of the set-net fishery owners also operated their own bonito processing industry. Bonito processing in the Hualien region consisted mostly of salted bonito and bonito sticks. The development of the bonito processing industry was influenced by the Japanese rule of Taiwan, the Japanese withdrawal from Taiwan, and the importation of Taiwanese bonito sticks. Today, there is only one bonito stick factory in Chisingtan Bay that is still in operation due to fish shortages, difficulty with recruiting casual workers and inability to compete on the international market due to high costs.

碩士
逢甲大學
景觀與遊憩研究所
94
This study was primarily to explore the social feasibility of the potential market for ecotourism development in the artificial wetlands derived from the abandoned fishery ponds at Hukou area in Yunlin County. The purposes of this research were to investigate the relationships among these study variables included: respondents’ social economic backgrounds, participation willingness, willingness to pay for the ecotourism, ecotourism perceptions and participation motivations. The theoretical basis of this study could be supported by the tests of these relationships. Contingent valuation method was applied at the presumed ecotourism market at Hukou area. The respondents this study were the residents who live in Taichung city, Changhua city, Yunlin county and Chiayi city. The questionnaire survey was conducted from April 30 to May 28, 2006. There were 611 valid samples collected in this study by means of internet survey and on-site survey. The major results of this study were shown as followings: 1. For five presumed activities offered by this study, above 80% of respondents expressed their willingness to participate and most of them were willing to pay certain amount of money for their trips. It has shown that the potential market existed in terms of the social feasibility analysis. 2. In terms of social economic backgrounds, only the residential areas had significant influences on their willingness to stay overnight in the presumed ecotourism area. Besides, different residential areas and average monthly income had significant influences on their willingness to pay for their ecotourism. 3. For those who were willing to participate in ecotourism had significant higher levels of agreement in perceptions of ecotourism and participation motivations than those who were not. 4. The relationship between respondents’ willingness to pay for ecotourism and their perceptions of ecotourism was not significant. In addition, the relationship between respondents’ willingness to pay for their ecotourism and participation motivations was significant but relatively low. It may indicate that to reinforce participation motivation is more important than to reinforce perceptions in the influence of their willingness to pay for their ecotourism. According to the study results, some suggestions for the future planning and management of the ecotourism development at Hukou area were presented for references.