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Dissertations / Theses on the topic 'Effect of fishing on'

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Published: 4 June 2021

Last updated: 31 July 2024

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1

Bridson, Jessica. "The effect of fishing on the evolution of North Sea Cod." Thesis, University of Strathclyde, 2001. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=9352.

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2

Nimick, Aileen Margaret. "Modelling Fishing Gear to Address "More than Minimal and Not Temporary" Fishing Effects to Essential Fish Habitat." Thesis, Alaska Pacific University, 2018. http://pqdtopen.proquest.com/#viewpdf?dispub=10845718.

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<p> The Magnuson-Stevens Fishery Conservation and Management Act (MSA; Magnuson-Stevens Fishery Conservation and Management Act. 2014. (16 U.S.C. 1801–1891(d)) mandates that fisheries management councils in the United States prevent adverse, or “more than minimal and not temporary”, fishing effects to essential fish habitat (EFH) to the extent practicable. Councils were left to decide what effects qualified as “minimal” and “temporary”. The lack of explicit definition in the MSA and its accompanying Final Rule has resulted in inconsistent habitat manag

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3

Modig, Karl Johan. "Selective fishing gear : A review on the effects of selective fishing gear on cod in the Baltic Sea." Thesis, Linnéuniversitetet, Institutionen för biologi och miljö (BOM), 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-31302.

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The populations of Atlantic cod (Gadus morhua) in the Baltic Sea has been heavily exploited for decades, with fishing mortalities close to, and for several occasions, even above one. The larger part of the spawning stock biomass is consequently being removed each year. The issue of fisheries induced evolution (FIE) has been gaining attention from researchers lately. The selection pressure driving this evolution is powered by a connection between high mortality rates and heritable traits. The fishing in the Baltic Sea is mainly performed with size selective gear that can impose selection on tra

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4

Ricks, Benjamin Riddick Maceina Michael J. "The effects of tournament fishing on dispersal, population characteristics, and mortaltiy of black bass in Lake Martin, Alabama." Auburn, Ala., 2006. http://repo.lib.auburn.edu/2006%20Spring/master's/RICKS_BENJAMIN_26.pdf.

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5

Miller, Nathan. "The Gulf of Mexico Red Snapper Individual Fishing Quota Program: The Effects on the Fishing Industry and Potential Outlook." Scholar Commons, 2010. http://scholarcommons.usf.edu/etd/3626.

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In January 2007, the Gulf of Mexico red snapper fishery took a step toward sustainability and began management under an individual fishing quota (IFQ) system. The hope is that direct ownership stakes by fishers brings more direct involvement on behalf of the boat owners and fishermen as well as more responsible and sustainable fishing practices on depressed fish populations. The research was conducted in order to study the welfare of local fishing communities as well as the effects on the red snapper fishery itself. Traditional fisheries and economic data were analyzed. In addition a Data Enve

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6

Søvik, Siri Lise. "Characterisation of enzymatic activities in by-products from cod species : effect of species, season and fishing ground." Doctoral thesis, Norwegian University of Science and Technology, Department of Biotechnology, 2005. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-1267.

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7

Westera, Mark B. "The effect of recreational fishing on targeted fishes and trophic structure, in a coral reef marine park." Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2003. https://ro.ecu.edu.au/theses/1499.

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Recreational line fishing is highly targeted at predatory fishes, making them vulnerable to overfishing. These same fishes play a role in trophic structure by regulating prey species. Despite increasing numbers of fishers, few studies have investigated the potential effects of recreational fishing on fish populations and subsequent trophic effects. This project investigated whether there were differences in fishes and benthos between unfished and recreationally fished areas, and whether the removal of targeted fishes influenced trophic structure. The study was conducted at the Ningaloo Marine

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8

Costa, André Bento. ""Fishing on Alentejo rocky shores - intensity, yield and protection effects"." Master's thesis, Universidade de Évora, 2012. http://hdl.handle.net/10174/15861.

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Actividades de pesca são tradicionais em Portugal e, na costa sudoeste continental Portuguesa, os pescadores geralmente exploram zonas rochosas intertidais ou subtidais pouco profundas, capturando peixes teleósteos e diversos invertebrados marinhos. Desde 1995, que esta costa está parcialmente protegida por um parque natural (Parque Natural do Sudoeste Alentejano e Costa Vicentina - PNSACV). Uma série de medidas de gestão de pesca têm vindo a ser implementados desde 2006 e mais recentemente, foi adoptado um novo plano de ordenamento do parque natural, que acrescenta normas ainda mais restritiv

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9

Bracewell, Philip John. "The effects of electric fishing on some freshwater cyprinid fish species." Thesis, University of Hull, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.327287.

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10

Leaf, Robert Thomas. "The Evolutionary Effects of Fishing: Implications for Stock Management and Rebuilding." Diss., Virginia Tech, 2010. http://hdl.handle.net/10919/28636.

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Recent empirical studies have demonstrated inter-generational morphological and life-history changes in fish stocks that have been impacted by size-selective harvest. Evolutionary processes in biological populations occur through differential survival and reproductive success based, in part, upon individual phenotypic variability. Fishing is a source of directional selection resulting in the directed removal of some phenotypes; however, many aspects of the evolutionary effects of fishing remain have yet to be described. In order to better understand the life-history and morphological changes t

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11

Coutin, Patrick C. "The effects of long term exploitation on tropical demersal fish stocks." Thesis, Coventry University, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.329574.

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12

Van, der Hoop Julie M. "Effects and added drag on cetaceans : fishing gear entanglement and external tag." Thesis, Massachusetts Institute of Technology, 2017. http://hdl.handle.net/1721.1/108892.

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Thesis: Ph. D., Joint Program in Applied Ocean Science and Engineering (Massachusetts Institute of Technology, Department of Biology; and the Woods Hole Oceanographic Institution), 2017.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 283-314).<br>Animal movement is motivated in part by energetic constraints, where fitness is maximized by minimizing energy consumption. The energetic cost of movement depends on the resistive forces acting on an animal; changes in this force balance can occur naturally or unnaturally. Fishing gear that entangles large whale

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13

Stanovick, John Stuart. "Sampling characteristics of the bus route survey technique in the James River, Virginia." Diss., Virginia Tech, 1993. http://hdl.handle.net/10919/38651.

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14

Pilling, Graham Michael. "The effects of fishing on the growth and assessment of snappers and emperors." Thesis, Imperial College London, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.314276.

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15

Maluleke, Vutlhari Absalom. "The effects of boat mooring systems on squid egg beds during squid fishing." Thesis, Cape Peninsula University of Technology, 2017. http://hdl.handle.net/20.500.11838/2528.

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Thesis (MTech (Mechanical Engineering))--Cape Peninsula University of Technology, 2017.<br>In South Africa, squid fishing vessels need to find and then anchor above benthic squid egg beds to effect viable catches. However, waves acting on the vessel produce a dynamic response on the anchor line. These oscillatory motions produce impact forces of the chain striking the seabed. It is hypothesised that this causes damage to the squid egg bed beneath the vessels. Different mooring systems may cause more or less damage and this is what is investigated in this research. The effect of vessel mooring

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16

Tonello, Junior Antonio José <1976&gt. "Effects pinger use on dolphins' behavior and fish capture in artisanal fishing activities." Doctoral thesis, Università Ca' Foscari Venezia, 2008. http://hdl.handle.net/10579/778.

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17

Morrell, Thomas J. "Analysis of "Observer Effect" in Logbook Reporting Accuracy for U.S. Pelagic Longline Fishing Vessels in the Atlantic and Gulf of Mexico." Thesis, NSUWorks, 2019. https://nsuworks.nova.edu/occ_stuetd/511.

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Commercial pelagic longline fishers within the U.S. Atlantic, Gulf of Mexico, and Caribbean are required to report all fishing interactions per each gear deployment to NOAA’s Vessel Logbook Program of the Southeast Fisheries Science Center to quantify bycatch, increase conservation efforts, and avoid jeopardizing the existence of vulnerable species listed under the Endangered Species Act (ESA). To provide additional accuracy, the Pelagic Observer Program (POP) of the SEFSC deploys professionally trained observers on longline vessels to produce a statistically reliable subset of longline fisher

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18

Fitwi, Biniam Samuel. "Determination of salinity tolerance limits of tilapia, Oreochromis mossambicus, for use in tuna line fishery." Thesis, Stellenbosch : Stellenbosch University, 2003. http://hdl.handle.net/10019.1/53355.

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Assignment (MPhil)--Stellenbosch University, 2003.<br>ENGLISH ABSTRACT: Many species of tilapia such as Oreochromis mossambicus are euryhaline, able to adapt to different salinity waters. Their ability to withstand high salinity levels has given rise to the possibility of using tilapia as baitfish for tuna line fishery. The purpose of the study was to determine the survival rate of tilapia O. mossambicus during direct transfer from freshwater to the salinity levels of 0, 15, 20, 22.5, 25, 27.5, 30, 32.5, and 35 ppt. The data was analysed through means of univariate ANOVAand regression

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19

O'Leary, Jennifer K. "Effects of fishing and trophic interactions on tropical reef builders : coralline, algae, and corals /." Diss., Digital Dissertations Database. Restricted to UC campuses, 2009. http://uclibs.org/PID/11984.

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20

Hlavacs, Lauri A. "Mapping the Effects of Blast and Chemical Fishing in the Sabalana Archipelago, South Sulawesi, Indonesia, 1991-2006." Ohio University / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1219347860.

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21

Fernandez, John. "Analysis of increases in fishing power in the western rock lobster (Panulirus cygnus) fishery." Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 1999. https://ro.ecu.edu.au/theses/1227.

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The western rock lobster, Panulirus cygnus, fishery represents a significant commercial asset to Western Australia, and it is therefore important that appropriate strategies are developed to effectively manage it. Because the fishery has a very high level of exploitation, researchers and managers rely significantly on annual stock assessments which are based on catch and effort data. This study will identify and assess the effects that changes in fishing power factors (e.g. advances in fish-finding technology) have had on estimates of catch and effort. The fishing power increases can be used t

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22

Williamson, Craig W. "Tournament-associated mortality and the effects of culling in Wisconsin black bass (Micropterus spp.) tournaments /." Link to full text, 2007. http://epapers.uwsp.edu/thesis/2007/williamson.pdf.

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Thesis (M.S.)--University of Wisconsin--Stevens Point, 2007.<br>Submitted in partial fulfillment of the requirements of the degree Master of Science in Natural Resources, College of Natural Resources. Includes bibliographical references (leaves 75-81).

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23

Bellinger, Nathan H. 1982. "Globalization and neoliberalism in Ecuador: The expansion and effects of the commercial tuna fishing industry." Thesis, University of Oregon, 2011. http://hdl.handle.net/1794/11268.

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xi, 129 p. : col. ill.<br>Between the 1980s and early 2000s, Ecuador's commercial tuna fishing industry evolved from an insignificant player in the global marketplace to the third largest tuna fishery in the world. The reasons behind this dramatic expansion are integrally linked to economic globalization and more specifically, the proliferation of neoliberal economic policies throughout Latin America and Ecuador. In this thesis, I link neoliberal reforms, such as increased capital mobility, free trade agreements, and export-led development, to the rapid growth of Ecuador's tuna fishery, centra

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24

Viegas, Vera Lúcia Coelho. "Pesca comercial na costa alentejana: rendimento, esforço de pesca, rejeições e efeitos da proteção." Master's thesis, Universidade de Évora, 2013. http://hdl.handle.net/10174/13081.

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Na área marinha do Parque Natural do Sudoeste Alentejano e Costa Vicentina, em 2011, foram criadas áreas de proteção que interditam totalmente ou parcialmente a pesca. Na restante área do PNSACV a pesca é regular e intensamente exercida, sendo uma das principais atividades económicas da região. Por forma a avaliar o esforço de pesca, as capturas e rejeições, exercido dentro do PNSACV, foram realizados 57 embarques em embarcações de pesca comercial com diferentes métiers. Determinou-se que a frota a operar na área de estudo, tenha em média 236 dias de faina por ano, sendo o métier Armadilhas o

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Samaranayaka, Ari, and n/a. "Environmental stochasticity and density dependence in animal population models." University of Otago. Department of Mathematics & Statistics, 2006. http://adt.otago.ac.nz./public/adt-NZDU20060907.114616.

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Biological management of populations plays an indispensable role in all areas of population biology. In deciding between possible management options, one of the most important pieces of information required by population managers is the likely population status under possible management actions. Population dynamic models are the basic tool used in deriving this information. These models elucidate the complex processes underlying the population dynamics, and address the possible consequences/merits of management actions. These models are needed to guide the population towards desired/chosen man

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Hsieh, Chih-hao. "Separating environmental effects from fishing impacts on the dynamics of fish populations of the Southern California region." Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 2006. http://wwwlib.umi.com/cr/ucsd/fullcit?p3210008.

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Thesis (Ph. D.)--University of California, San Diego, 2006.<br>Title from first page of PDF file (viewed June 5, 2006). Available via ProQuest Digital Dissertations. Vita. Includes bibliographical references.

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27

Armstrong, Bryan. "Oceanographic Effects on the Behavior of Shallow-Set Pelagic Longline Fishing Gear in the Western North Atlantic." NSUWorks, 2009. http://nsuworks.nova.edu/occ_stuetd/246.

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The pelagic longline is a common gear type used worldwide primarily for the commercial harvest of swordfish (Xiphias gladius) and various species of tuna (Thunnus spp.). Different species are targeted by deploying the longline gear at different depths. This technique is effective because the probability that a fish will consume a bait is proportional to the amount of time that particular bait spends in the fish’s feeding habitat. The depth of the gear can be altered by changing the number of hooks per basket, with the gear being shallower with fewer hooks. Shallow longline sets are typically u

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28

Ghebrehiwet, Dawit Yemane. "Assessing the effects of fishing on fish communities using South African case studies : empirical and theoretical approaches." Doctoral thesis, University of Cape Town, 2007. http://hdl.handle.net/11427/8919.

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Includes bibliographical references (p. 207-227)<br>Currently heavy ﬁshing is recognized as one of the major threats to the structural and functional organization of marine ecosystems in many coastal nations. The threat is mainly the result of the inherent nature of the various ﬁshing activities: size selectivity, habitat destruction, biomass removal, and uncertainty in resource status and management of the resource. Thus this thesis investigates structural changes that result from ﬁshing. This thesis aims to answer whether there were changes in the structure of fish communities off the of Sou

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29

Brown, Rachel L. "Untangling the effects of fishing effort and environmental variables on benthic communities of commercially fished scallop grounds." Thesis, University of York, 2013. http://etheses.whiterose.ac.uk/4657/.

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The Isle of Man fishing industry is currently predominated by two lucrative and heavily exploited scallop fisheries, targeting Pecten maximus and Aequipecten opercularis. The impacts of which have previously been investigated, however without the addition of environmental information. This thesis represents a unique long-term investigation into the impacts of fishing pressure and environmental variables on the benthic invertebrate communities of fishing grounds found around the Isle of Man. A significant positive trend in seawater temperature was found, along with an inverse correlation with c

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30

TULONE, Antonio. "ITALIAN COASTAL COMMUNITIES’ WILLINGNESS TO PAY FOR THE MITIGATION OF CLIMATE CHANGE EFFECTS ON THE FISHING INDUSTRY." Doctoral thesis, Università degli Studi di Palermo, 2020. http://hdl.handle.net/10447/395414.

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Telfer, Carli. "The Western Australian charter boat industry: Working towards long-term sustainability." Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2010. https://ro.ecu.edu.au/theses/154.

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Fisheries agencies and industry are accountable for sustainable fishing practises from all sectors. Throughout Australia, commercial and recreational sectors have been the focus of monitoring programmes and management, yet charter boat industries have been providing a service to fee-paying recreational clients for decades and only recently have the industry become part of those monitoring and management programs. Charter boat industries exhibit characteristics of both commercial and recreational fishing sectors, charter operators are paid for a service and managed under a licensing framework,

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Maufroy, Alexandra. "Drifting Fish Aggregating Devices of the Atlantic and Indian Oceans : modalities of use, fishing efficiency and potential management." Thesis, Montpellier, 2016. http://www.theses.fr/2016MONTT150/document.

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Depuis le milieu des années 1990, l’utilisation de Dispositifs de Concentration de Poissons (DCP), des objets artificiels spécifiquement mis à l’eau pour agréger des bancs de poissons, est devenue de plus en plus importante pour la pêche au thon tropical à la senne. Cette utilisation massive des DCP, qui s’accompagne d’une utilisation massive de dispositifs de suivi comme les balises GPS et les balises échosondeurs, est aujourd’hui source d’inquiétude pour les stocks de thons, les prises accessoires mais aussi pour le fonctionnement des écosystèmes pélagiques. Cependant, les modalités d’utilis

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Nenadovic, Mateja. "The Effects of Bottom-Tending Mobile Fishing Gear and Fiber-Optic Cable Burial on Soft-Sediment Benthic Community Structure." Fogler Library, University of Maine, 2009. http://www.library.umaine.edu/theses/pdf/NenadovicM2009a.pdf.

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34

Schroeder, Robert E. "The ecology of patch reef fishes in a subtropical Pacific atoll: recruitment variability, community structure and effects of fishing predators." Thesis, University of Hawaii at Manoa, 1989. http://hdl.handle.net/10125/18158.

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The ecology of patch reef fishes was studied to quantify the main factors that affect the natural variability of the fish community and to determine the effects produced on the community by experimental removal of predators. Initially, a year-long baseline description was completed of the physical, biological and ecological characteristics of 8 pristine patch reefs at Midway lagoon. For over 3 subsequent years, piscivorous predators were spearfished at least monthly, often for days at a time, on 4 of the 8 reefs. Fish populations were visually censused throughout the experiment. In all seasons

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Castro, Kreder Natasja. "In vitro studies on radiation effects and radiosensitization: HDR vs LDR and cytotoxic agents FISHing for, breaking and rejoining radiosensitivity /." [S.l. : Amsterdam : s.n.] ; Universiteit van Amsterdam [Host], 2004. http://dare.uva.nl/document/88010.

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36

Harding, Craig Thomas. "Tracking African penguins (Spheniscus demersus) outside of the breeding season: Regional effects and fishing pressure during the pre-moult period." Master's thesis, University of Cape Town, 2014. http://hdl.handle.net/11427/6565.

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African penguins (Spheniscus demersus) have experienced a 60% population decline in the past 30 years due to an eastward shift in the relative abundance of their main food source, anchovy (Engraulis encrasicolus ) and sardine (Sardinops sagax). This shift may be exacerbated by pressure from the small-pelagic fishery targeting these species. A lack of knowledge regarding foraging areas when not breeding has been identified as a deficiency in management planning for African penguins. Satellite transmitters were deployed on 20 adults during the pre-moult foraging period from colonies on the west

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Nogueira, Barbara Galindo. "Aplicação do conhecimento de pescadores artesanais para entender a captura incidental de tartarugas marinhas no sul do Brasil." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2016. http://hdl.handle.net/10183/142044.

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Dentro do contexto de crise global pesqueira que afeta tanto a pesca industrial quanto a artesanal, este trabalho visa descrever e analisar a pesca artesanal de emalhe no sul do Brasil, além de estudar a interação entre essa pesca artesanal e as tartarugas marinhas. O capítulo 1 consiste na caracterização social, econômica e operacional da pesca artesanal, avaliando o esforço pesqueiro de suas diferentes modalidades. A análise dos dados fornecidos por pescadores revelou a diferenciação na captura e esforço entre dois grupos de embarcações: barcos até 12,5 metros de comprimento total e barcos a

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Warlimont, Petra. "Application of the Tracking and Analysis Framework (TAF) to Assess the Effects of Acidic Deposition on Recreational Fishing in Maine Lakes." Fogler Library, University of Maine, 2002. http://www.library.umaine.edu/theses/pdf/WarlimontP2002.pdf.

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Chi, Danielle K. "The Effects of Salmon Availability, Social Dynamics, and People on Black Bear (Ursus Americanus) Fishing Behavior on an Alaskan Salmon Stream." DigitalCommons@USU, 1999. https://digitalcommons.usu.edu/etd/4242.

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The primary goals of this research were to investigate 3 ecological factors influencing black bear (Ursus americanus) foraging behavior on an Alaskan salmon (Oncorhynchus spp.) stream: fish availability, social dynamics, and human activity. Over 900 observation hours were Jogged at 2 falls from July !-September I 1993-1995; the lower falls were open to public for wildlife viewing, but the upper falls were restricted to research personnel. In general, black bears responded to differences in fish accessibility on both spatial and temporal scales. All years of the study, 3 indices of bear activit

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Smedley, Marie A. "Nutritional and environmental effects on triploid Atlantic salmon skeletal deformity, growth and smoltification." Thesis, University of Stirling, 2016. http://hdl.handle.net/1893/23342.

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The Atlantic salmon (Salmo salar) is an iconic species that dominates the global finfish production sector with increasing market demand. The Scottish industry and government alone aspires for expansion of the sector to 210,000 t by 2020 with 154, 000 t produced in 2013. As such, there are pressures to improve sustainable development in particular to minimise the genetic impact of escapees on wild populations and reduce sea lice infection which are required for the granting of “green licenses” in Norway. The use of triploidy has been tested in the 1980’s with little success owing to suboptimal

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Morrison, Jean. "Bajau gender : a study of the effects of socio-economic change on gender relations in a fishing community of Sabah, East Malaysia." Thesis, University of Hull, 1993. http://hydra.hull.ac.uk/resources/hull:3711.

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Marzuki, Marza Ihsan. "VMS data analyses and modeling for the monitoring and surveillance of Indonesian fisheries." Thesis, Ecole nationale supérieure Mines-Télécom Atlantique Bretagne Pays de la Loire, 2017. http://www.theses.fr/2017IMTA0012/document.

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Le suivi, le contrôle et la surveillance (MCS) des pêches marines sont des problèmes essentiels pour la gestion durable des ressources halieutiques. Dans cette thèse, nous étudions le suivi spatial des activités des navires de pêche en utilisant les données de trajectoire du système de surveillance des navires (VMS) dans le cadre du projet INDESO (2013-2017). Notre objectif général est de développer une chaîne de traitement des données VMS afin de: i) effectuer un suivi de l'effort de pêche des flottilles de palangriers indonésiens, ii) détecter les activités de pêche illégales et évaluer leur

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Bealey, Roy Steven John. "Short-term changes to the life history of shad, Pomatomus saltatrix (Perciformes: Pomatomidae), in Southern Angola." Thesis, Rhodes University, 2015. http://hdl.handle.net/10962/d1017211.

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A general lack of biological information is hampering the effective management of Angola’s fisheries. While this lack of information is largely a result of the country’s extended civil war that ended in 2002, the subsequent rapid expansion of fisheries is most likely impacting fish abundance and influencing the biology of this regions fishes. Besides the influence of fisheries, the southern Angolan coastal region is considered to be a climate change “hotspot” due to rapidly (>0.8°C/decade) increasing water temperatures. These changes are thought to drive further changes to the biology of fishe

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Stäbler, Moritz [Verfasser], and Axel [Akademischer Betreuer] Temming. "Effects of and on the food-web when fishing for maximum sustainable yields in the southern North Sea / Moritz Stäbler ; Betreuer: Axel Temming." Hamburg : Staats- und Universitätsbibliothek Hamburg, 2017. http://d-nb.info/114386865X/34.

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Santos, Paulo Roberto Santos dos. "A pesca artesanal da Miragaia (Pogonias cromis, Scieanidae) e consequências da sobreexplotação, no estuário da Lagoa dos Patos." reponame:Repositório Institucional da FURG, 2015. http://repositorio.furg.br/handle/1/6060.

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Winn, Jeremy Paul. "Modeling Large Whale Entanglement Injuries: An Experimental Analysis of the Influence of Tissue Compliance, Line Tension, and Draw-Length on Epidermal Abrasion Resistance." Fogler Library, University of Maine, 2006. http://www.library.umaine.edu/theses/pdf/WinnJP2006.pdf.

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Torres, Edgar. "Effects of the fishing strategies developed by purse seine fleets on tropical tunas and on associated fauna in the eastern Atlantic and eastern Pacific oceans." Thesis, Montpellier 2, 2012. http://www.theses.fr/2012MON20029/document.

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Les pêcheries de thonidés représentent 7.9% de la production mondiale de produits de la mer. La plupart des stocks de thons sont pleinement exploités, et certains surexploités, et tous font face à une pression de pêche croissante. En raison de l'extension des zones de pêche, les évaluations des stocks dépendent en grande partie des captures commerciales. Toutefois, les données commerciales peuvent varier au cours du temps étant donné que les pêcheurs peuvent investir dans des engins de pêche et de l'équipement, s'établir au large des côtes, ou commencer à pêcher dans de nouvelles zones. Peu d'

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Simpson, Anne W. "An Investigation of the Cumulative Impacts of Shrimp Trawling on Mud Bottom Fishing Grounds in the Gulf of Maine: Effects on Habitat and Macrofaunal Community Structure." Fogler Library, University of Maine, 2003. http://www.library.umaine.edu/theses/pdf/SimpsonAW2003.pdf.

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Alarcón, Sergio Eduardo Neira. "Assessing the effects of internal (trophic structure) and external (fishing and environment) forcing factors on fisheries off central Chile : basis for an ecosystem approach to management." Doctoral thesis, University of Cape Town, 2008. http://hdl.handle.net/11427/6217.

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Includes abstract.<br>Includes bibliographical references (p. 227-253).<br>Human perception of sea fisheries has evolved from an inexhaustible resource paradigm towards a generalized concern on the degraded state of fish stocks and ecosystems. Accordingly, fisheries science and management are expanding from the traditional single-species approach towards an ecosystem approach to fisheries. Marine communities are organized as webs of interactions that are affected by external natural (climate) and anthropogenic (fishing) forcing, with their relative effects poorly known, but hypothesised to str

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Andrade, Joana Isabel da Silva. "Effects of cyanide exposure on marine fish with emphasis to Amphiprion spp." Master's thesis, Universidade de Aveiro, 2015. http://hdl.handle.net/10773/14774.

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Mestrado em Biologia Marinha<br>Tropical coral reefs have a high importance on marine ecosystems due to their high productivity and biodiversity. However, these ecosystems are facing a growing number of both natural and anthropogenic threats. Cyanide fishing is a destructive technique to capture live reef fish, both for human consumption and to supply the marine aquarium industry. Clownfish and damsels ( Family Pomacentridae) are the most heavily traded group of marine aquarium fish and consequently also some of the most commonly targeted fishes by this illegal fishery. Cyanide (CN-) is

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