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Dissertations / Theses on the topic 'Waterbirds'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 July 2025

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1

Guillet, Alfredo. "Biogeography and ecology of African waterbirds." Doctoral thesis, University of Cape Town, 1986. http://hdl.handle.net/11427/21812.

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Bibliography: pages 192-208.<br>Patterns of distribution and diversity for African waterbirds are investigated at the continental, sub-continental, ecosystem and species levels. The focal species is the Great White Pelican Pelecanus onocrotalus, one of South Africa's 'Red Data' bird species. The 'focal' ecosystem is Rondevlei Bird Sanctuary (34°'04'S, 18°30'E), one of the few conserved areas in Africa set aside especially for waterbirds. Biogeographically, waterbirds partition Africa much more coarsely (into 8 vs 18 avifaunal zones) than do non-aquatic birds. Waterbird species diversity (numbe

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2

Vickery, Juliet. "The effects of surface water acidification on riparian birds - with particular reference to the Dipper." Thesis, University of Oxford, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.328904.

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3

Onoufriou, Chloe. "Foraging strategies of wintering waterbirds : an integrated ecosystem approach." Thesis, University of Bristol, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.509777.

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4

Ueda, Atsuhiro. "Determinants of parasite diversity and community structure in waterbirds." Thesis, Ueda, Atsuhiro (2021) Determinants of parasite diversity and community structure in waterbirds. Honours thesis, Murdoch University, 2021. https://researchrepository.murdoch.edu.au/id/eprint/63474/.

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The study of factors that underlie parasite fauna has received increased research attention in the last decade. The host and parasite have often co-evolved over a long time, which helps explain patterns of parasite community diversity within a similar host group. This study examined the following four ecological species traits of waterbirds for any relationship with parasite community richness and structure: habitat utilisation, foraging techniques, movement patterns, and colony size. The birds examined were Australasian darter, Australasian grebe, crested tern, little pied cormorant, pied cor

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5

Traut, Ashley H. "Urban lakes and waterbirds effects of development on distribution and behavior /." [Gainesville, Fla.]: University of Florida, 2003. http://purl.fcla.edu/fcla/etd/UFE0000807.

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6

White, Charise L. "Habitat value of created wetlands to waterbirds in golf course landscapes." [Gainesville, Fla.] : University of Florida, 2003. http://purl.fcla.edu/fcla/etd/UFE0000895.

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7

Stone, Richard E. "The ecology and behaviour of waterbirds in relation to human activity." Thesis, Queen's University Belfast, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.287430.

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8

Henry, Dominic A. W. "A multi-scale study on the movement ecology of Afrotropical waterbirds." Doctoral thesis, University of Cape Town, 2016. http://hdl.handle.net/11427/20365.

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Understanding the processes and mechanisms governing animal movement is a fundamental goal in ecology. Processes driving movement can occur across multiple spatiotemporal scales and have important consequences for the structure and dynamics of populations, communities and ecosystems. The study of movement provides insights into the ecological resources and habitats necessary for persistence of species and communities. It also provides a theoretical and applied basis from which to formulate informed conservation plans. Waterbirds in semiarid southern Africa are an ideal study group for understa

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9

Nightingale, Joshua. "Community assembly of waterbirds on the coast of Rio Grande do Sul." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2016. http://hdl.handle.net/10183/150632.

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As comunidades ecológicas formam-se a partir de pools regionais de espécies, mas contendo apenas um subconjunto da diversidade total da região envolvente. Quando comparadas com simulações aleatórias, as comunidades ecológicas reais mostram frequentemente evidências de estrutura não-aleatória. Esta estrutura pode incluir interações ambientais e/ou interespecíficas determinando os conjuntos de espécies e atributos que co-ocorrem, sendo a importância relativa dos efeitos ambientais vs. interespecíficos mediada pela qualidade de habitat. Além disso, as comunidades podem também revelar estrutura fi

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10

Daniels, Neil. "A systematic conservation plan for threatened freshwater wetlanddependent waterbirds across South Africa." University of Western Cape, 2020. http://hdl.handle.net/11394/8000.

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Magister Scientiae (Biodiversity and Conservation Biology) - MSc (Biodiv and Cons Biol)<br>Freshwater ecosystems are valuable to all components of biodiversity communities. Globally, these ecosystems are threatened by human activity and as a consequence, many vertebrates, including waterbirds, have become threatened. Wetlands are one of the most productive ecosystem types in the world. Yet, despite this, many protected area networks around the world fail to include this ecosystem type in their protected area networks. On a national scale, in South Africa, wetland loss and deteriorating we

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11

Phillips, Adam C. "MUTE SWAN IMPACTS ON NATIVE WATERBIRDS AND SUBMERGED AQUATIC VEGETATION IN ILLINOIS." OpenSIUC, 2010. https://opensiuc.lib.siu.edu/theses/367.

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Mute swans (Cygnus olor), an exotic species of waterfowl, have been found to negatively impact native waterbirds and submerged aquatic vegetation (SAV) communities in the Chesapeake Bay and lower Great Lakes. Mute swans were first recorded in Illinois in 1971 and their population is small, but growing. In 2008-09, I studied mute swans in central Illinois to investigate whether they negatively impacted waterbirds through aggressive actions and SAV through over-grazing. I also estimated mute swan territory size to estimate potential habitat exclusion and population growth potential. Mute swan te

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12

Crowther, Amy E. "The restoration of intertidal habitats for non-breeding waterbirds through breached managed realignment." Thesis, University of Stirling, 2007. http://hdl.handle.net/1893/334.

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Conservation of intertidal habitats in the UK is vital in order to continue to support nationally and internationally important populations of non-breeding waterbirds. Historic reclamation for agriculture and industry has resulted in the loss and degradation of large areas of these intertidal habitats in estuaries and they continue to be threatened by sea-level rise. Managed realignment is one method which is increasingly being used to restore intertidal habitats. As managed realignment is a relatively new restoration technique, the extent to which knowledge of the biology of estuaries is appl

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13

McInnes, AM, DG Allan, and G. Malan. "Key sites for the conservation of waterbirds (Aves) in Durban Bay, South Africa." Durban Museum Novitates, 2005. http://encore.tut.ac.za/iii/cpro/DigitalItemViewPage.external?sp=1001003.

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Key sites for the conservation of waterbirds (Aves) in Durban Bay, South Africa. Durban Museum Novitates 30: 1-14. Forty-eight monthly counts of waterbirds were conducted in Durban Bay (July 1999-June 2003). A total of 47 227 waterbirds of 79 species were recorded. Eighteen waterbird species were significantly more abundant in summer while seven were significantly more abundant in winter. Centre Bank supported 40.6% of all waterbirds, comprising mainly Palearctic waders and roosting gulls and terns. Distinct species assemblages of plovers (Charadridae) and sandpipers (Scolopacidae) were associ

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14

Reynolds, Chevonne. "The role of waterbirds in the dispersal of aquatic organisms in southern Africa." Doctoral thesis, University of Cape Town, 2016. http://hdl.handle.net/11427/20844.

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Dispersal is a fundamental process with far-reaching ecological and evolutionary consequences. Not all organisms are capable of dispersing on their own and instead produce propagules that must be transported to new habitat by a vector. Propagule dispersal by frugivorous bird species is well researched, but only very recently has the capacity of highly mobile waterbirds to disperse aquatic organisms received similar attention in the dispersal literature. Dispersal is important for the organisation of communities, and therefore understanding the frequency and scale of waterbird-mediated dispersa

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15

Jenkinson, Suzanne Marie. "The conservation value of small wetlands for waterbirds in the southeast of South Australia /." Title page, contents and abstract only, 1997. http://web4.library.adelaide.edu.au/theses/09AR/09arj521.pdf.

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16

Nachuha, Sarah. "Explaining distribution patterns of waterbirds on rice paddies and other wetlands in eastern Uganda." Thesis, University of Oxford, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.433345.

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17

Gammonley, James H. "Seasonal use of Montane wetlands by waterbirds on the rim of the Colorado Plateau /." free to MU campus, to others for purchase, 1996. http://wwwlib.umi.com/cr/mo/fullcit?p9712801.

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18

Hillman, Matthew Dean. "Evaluating the Responses of Least Terns, Common Terns, Black Skimmers, and Gull-billed Terns to Military and Civilian Aircraft and to Human Recreation at Cape Lookout National Seashore, North Carolina." Thesis, Virginia Tech, 2012. http://hdl.handle.net/10919/34980.

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Due to variability in aircraft overflight type and associated animal responses, there is a lack of consensus on the effects of overflights on wildlife populations. My objectives were to 1) evaluate the potential impacts that reduced-altitude tactical speed military aircraft might generate on nesting colonial waterbirds, and to place any impacts in the context of other human events, 2) a) identify key least tern (Sternula antillarum) demographic drivers, b) evaluate the accuracy of assigning nest fates without using remote cameras, and c) assess the effects of camera-monitoring on nest surviva

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19

Greer, Nan Marie. "Ethnoecology of taro farmers and their management of Hawaiian wetlands and endangered waterbirds in taro agroecosystems /." Thesis, Connect to this title online; UW restricted, 2005. http://hdl.handle.net/1773/6443.

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20

Dwyer, Ross Gordon. "Ecological and anthropogenic constraints on waterbirds of the Forth Estuary : population and behavioural responses to disturbance." Thesis, University of Exeter, 2010. http://hdl.handle.net/10036/117159.

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Disturbance from engineering works is an increasing problem in terrestrial and marine ecosystems throughout the world. Many reported declines in population size, breeding success and body condition have been diagnosed as the result of anthropogenic disturbance, however little is known about the effect of long-term disturbance from large-scale engineering works. Understanding the mechanisms by which animals respond to anthropogenic activities is fundamental to explaining interactions, and resolving potential conflicts between humans and wildlife. This thesis focuses on the factors affecting the

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21

Cheung, Ka-wing, and 張嘉穎. "Spatial and seasonal variations of freshwater macroinvertebrates, odonata and waterbirds in Luk Keng marshland, Hong Kong." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2008. http://hub.hku.hk/bib/B41290951.

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22

Cheung, Ka-wing. "Spatial and seasonal variations of freshwater macroinvertebrates, odonata and waterbirds in Luk Keng marshland, Hong Kong." Click to view the E-thesis via HKUTO, 2008. http://sunzi.lib.hku.hk/hkuto/record/B41290951.

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23

Hean, Jeffrey William. "The trophic ecology of waterbirds in a small temperate estuary: a stable isotope and lipid tracer approach." Thesis, Rhodes University, 2016. http://hdl.handle.net/10962/54356.

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Waterbirds are often overlooked as predators in aquatic ecosystems, despite the fact that waterbirds congregate in great numbers in and around waterways, notably estuaries. To fully appreciate the effect that aquatic feeding waterbird species may have on aquatic prey communities and the role that they play in estuarine food webs, stable isotopes and fatty acid profiles were employed to examine the seasonal diet of selected waterbirds in the Kowie Estuary, Eastern Cape Province, South Africa. Population counts were conducted every month for four seasons to examine the demography of waterbirds i

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24

Proctor, Jayce Alan. "What Would a Waterbird Do? A Study of 13 Urban Wetlands in Frisco, Texas." Thesis, University of North Texas, 2020. https://digital.library.unt.edu/ark:/67531/metadc1703373/.

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Intention for this study is driven by finding patterns that may be shown to reveal primary factors of influence for the abundance and diversity of wetland birds. These correlations may be used to promote wetland management strategies for the benefit of waterbird species, and help illuminate current local wetland conditions for waterbirds, respectively. The idea is to help enliven individuals to become a more conscious steward and manipulator of our environment through incorporating structural and biological components into wetland development and management strategies, and broadly speaking, ur

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25

Lundquist, Kristin. "Habitat use by waterbirds in wetlands during winter and spring – a study of five wetlands in Halmstad, Sweden." Thesis, Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-37641.

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During December-April in 2016/2017, five wetlands in near proximity to the city of Halmstad and four stretches along the stream Trönningeån were investigated regarding their use by birds during winter and spring. At one of the wetlands it was investigated whether non-entry rules are set accordingly to the breeding period. Furthermore, the recreational values of two of the wetlands were calculated. The five wetlands were used by a total of 37 species during the months December-April and they were occupied by mainly the same bird species with a few exceptions, showing some differences in numbers

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26

Mäder, Aurélea. "Efeitos da antropização da zona costeira sobre as assembléias de aves." Universidade do Vale do Rio do Sinos, 2010. http://www.repositorio.jesuita.org.br/handle/UNISINOS/2324.

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Made available in DSpace on 2015-03-05T16:20:41Z (GMT). No. of bitstreams: 0 Previous issue date: 25<br>Nenhuma<br>Áreas urbanizadas afetam negativamente a distribuição, abundância e comportamento de aves aquáticas costeiras. Neste estudo nós testamos a hipótese de que áreas costeiras perturbadas pelo homem (1) possui menor abundância e riqueza de aves, (2) diferenciação na composição de espécies e (3) apresenta um padrão temporal de abundância diferente de áreas costeiras não urbanizadas. Para isso, utilizamos 16 sub-áreas na costa do Rio Grande do Sul (8 não-urbanizadas e 8 urbanizadas).

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27

Águas, Maria Serpa Cabral de Matos. "Dispersão passiva de lagostim vermelho da Luisiana (Procambarus clarkii) através de pato-real (Anas platyrhynchos)." Master's thesis, Universidade de Évora, 2013. http://hdl.handle.net/10174/15603.

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Neste trabalho testámos a possibilidade de dispersão passiva dos juvenis do lagostim vermelho da Luisiana (Procambarus clarkii) através de um vector animal, o pato-real (Anas platyrhynchos). Realizou-se uma experiência de dessecação, a duas temperaturas, constatando-se que os juvenis sobrevivem até 225 minutos fora de água, resistindo mais tempo quando à temperatura inferior. Realizaram-se também outras duas experiências para determinar a capacidade de se agarrarem a patas do pato e à plumagem do pato em movimento. Os resultados da primeira experiência levaram-nos a concluir que o tempo de rep

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28

Harebottle, Douglas Michael. "Assessing the conservation value of wetlands and waterbirds with a focus on the winter rainfall region of South Africa." Doctoral thesis, University of Cape Town, 2012. http://hdl.handle.net/11427/10665.

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Includes bibliographical references.<br>This thesis deals with the development and application of a new tool to assess the conservation significance of wetland avifauna. Termed the Waterbird Conservation Value (WCV) score, this method sums the proportion of each species' count relative to the global 1% threshold level for each species; the value obtained measures the overall conservation importance of the wetland to waterbirds.

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29

De, Blocq Van Scheltinga Andrew. "Disturbance effects of boat-based tourism on waterbirds at the Ramsar-designated De Hoop Vlei, Western Cape, South Africa." Master's thesis, University of Cape Town, 2017. http://hdl.handle.net/11427/25186.

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Recreation and ecotourism activities are growing in demand worldwide, especially in biodiversity hotspots. Protected area managers may seek to introduce novel activities in order to generate revenue. However, disturbance effects brought about through encounters between humans and wildlife can have negative consequences, which conflict with conservation goals. De Hoop Vlei is a large coastal lake within the De Hoop Nature Reserve. It is a Ramsar site as well as a key feature of a BirdLife Important Bird Area (IBA). Proposals for motorized boat tours and kayak tours on the vlei have been made, f

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30

Bovy, Kristine M. "Effects of human hunting, climate change and tectonic events on waterbirds along the Pacific Northwest coast during the late Holocene /." Thesis, Connect to this title online; UW restricted, 2005. http://hdl.handle.net/1773/6548.

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31

Henry, Adonia R. "Habitat characteristics and community ecology of waterbirds on three wetland types at the Caribou-Targhee National Forest, Idaho and Wyoming /." free to MU campus, to others for purchase, 2004. http://wwwlib.umi.com/cr/mo/fullcit?p1422930.

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32

Trapnauskaitė, Katrė. "Didžiųjų ančių užsikrėtusių paukščių gripo virusu molekuliniai tyrimai." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2014. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2014~D_20140611_145722-15722.

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Paukščių gripas yra virusinė infekcija, kuri lengvai plintanti pavojinga užkrečiamoji paukščių liga, šia liga serga laukiniai ir naminiai paukščiai. Patys pavojingiausi ir patogeniškiausi yra paukščių gripo H5 ir H7 viruso potipiai. Didžiausią susirūpinimą ir nerimą kelia H5N1 paukščių gripo virusas, kuris priklauso Influenzavirus A viruso atmainai. Svarbiausias antigenas, kuris sukelia apsauginių antikūnų produkciją, o taip pat svarbus viruso prisijungimui prie ląstelių pirmosiose infekcijos stadijose, yra viriono apvalkalo glikoproteinas - hemagliutininas. Pagal hemagliutinino antigenines sa

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33

Hubina, Tatsiana. "Development of a GIS to estimate the effect of abiotic factors on the abundance of waterbirds in the Grado-Marano Lagoon." Doctoral thesis, Università degli studi di Trieste, 2009. http://hdl.handle.net/10077/3168.

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2007/2008<br>L’obiettivo di questa tesi è valutare l’influenza di vari fattori biotici e abiotici che possono influenzare l’abbondanza degli uccelli acquatici nella laguna di Grado e Marano. La laguna di Grado e Marano è situata nel NE del mare Adriatico e ha un’estensione approssimativa di 160 km2. Il passo introduttivo nell’implementazione della struttura del progetto è stato individuare un sistema innovativo per la raccolta, la standardizzazione e l’archiviazione dei dati ornitologici. Immagini satellitari ASTER sono state utilizzate per classificare differenti tipi di habitat, incluse l

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34

Villamagna, Amy Marie. "Ecological effects of water hyacinth (Eichhornia crassipes) on Lake Chapala, Mexico." Diss., Virginia Tech, 2009. http://hdl.handle.net/10919/26854.

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Water hyacinth (Eichhornia crassipes) is a floating non-native plant that has been reoccurring in Lake Chapala, Jalisco, Mexico for more than 100 years. In this research, I explore the effects of water hyacinth on freshwater ecosystems worldwide and specifically on Lake Chapala. In chapter 1, I reviewed studies conducted on water hyacinth worldwide and found that the effects of water hyacinth on water quality are similar but the magnitude of effects is dependent on the percent cover and potentially the spatial configuration of water hyacinth mats. Water hyacinth's effect on aquatic invertebra

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35

Norrby, Viggo. "Status, trends and values of wintering and migrating birds in Gialova lagoon, Messenia, Greece." Thesis, Stockholms universitet, Institutionen för naturgeografi, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-146783.

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Areas of wetland have for the last century declined globally, mostly as a cause of anthropogenic activitities. Since many bird species are depending on wetlands, this have affected their populations negatively, and today many of the remaining wetlands are protected. This study has investigated the status and trends of Gialova lagoon in Greece, both as a stopover for spring migrating birds and as a wetland for wintering waterbirds. This has been done by doing an own field inventory for two weeks in March, and by compiling and analysing data from winter censuses from the last thirty years. Resul

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36

Van, Toor Mariëlle Liduine [Verfasser]. "A HITCHHIKER'S GUIDE TO WATERBIRD MIGRATION / Mariëlle Liduine Van Toor." Konstanz : Bibliothek der Universität Konstanz, 2016. http://d-nb.info/1171131909/34.

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Gaget, Élie. "Importance des politiques de conservation pour faciliter l'ajustement des communautés d'oiseaux d'eau hivernants au réchauffement climatique en Méditerranée." Thesis, Paris, Muséum national d'histoire naturelle, 2018. http://www.theses.fr/2018MNHN0016/document.

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Les activités humaines menacent gravement la biodiversité. Sous le terme de changements globaux, la sur-exploitation des populations et la destruction/dégradation des habitats arrivent en tête de liste des facteurs responsables de l’érosion de la biodiversité. Le changement climatique gagne en magnitude et ajoute une pression supplémentaire sur les espèces. En réponse à l’augmentation des températures du globe, les communautés se réorganisent suite au déplacement de la distribution géographique des espèces vers les pôles. Mais l’accumulation des pressions anthropiques est susceptible de produi

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Watson, Stephen C. L. "The impact of multiple stressors on coastal biodiversity and associated ecosystem services." Thesis, University of St Andrews, 2017. http://hdl.handle.net/10023/16817.

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Marine and coastal ecosystems are subject to diverse and increasingly intensive anthropogenic activities, making understanding cumulative effects critically important. However, accurately accounting for the cumulative effects of human impacts can be difficult, with the possibility of multiple stressors interacting and having greater impacts than expected, compounding direct and indirect effects on individuals, populations, communities and ecosystems. Assessment of multiple stressors therefore requires extensive scientific research that directly tests how single or multiple ecological component

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Polak, Bobby J. "Influence of human recreational activities and vegetative characteristics on waterbird abundance /." View online, 2008. http://ecommons.txstate.edu/bioltad/7.

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England, Kate. "Assessing conservation of a tropical African estuary : waterbird disturbance, livelihoods, and ecotourism." Master's thesis, University of Cape Town, 2011. http://hdl.handle.net/11427/12505.

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The aim of this study was to evaluate the potential costs and benefits of increasing conservation in the Sabaki River Mouth Important Bird Area. This was achieved by assessing the vulnerability of waterbirds to disturbance from human activity in the estuary, the current use and importance of the area to local livelihoods, and the value (current and potential) of tourism. Waterbird densities and levels of human activity were quantified from 20 September to 25 November 2010 in the intertidal area of the Sabaki River Mouth Important Bird Area on the central Kenyan coast. Household surveys were co

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Frank, Maureen G. "Migratory Waterbird Ecology at a Critical Staging Area, Great Salt Lake, Utah." DigitalCommons@USU, 2016. https://digitalcommons.usu.edu/etd/4940.

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Despite the hemispheric importance of Great Salt Lake (GSL) as a staging area for migratory birds, little is known about the resources that GSL provides to these birds, or how changes to the GSL ecosystem might impact the avian community. Three species of migratory waterbirds that stage at GSL are Wilson’s phalaropes (Phalaropus tricolor), red-necked phalaropes (Phalaropus lobatus), and eared grebes (Podiceps nigricollis). My objective for this research was to study the impacts of prey availability on the staging ecology of these species. In Chapter 2, I examined the use of GSL habitats by bot

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Woodward, Joanne Lois. "The challenge of conducting a waterbirth randomised controlled trial." Thesis, University of Birmingham, 2012. http://etheses.bham.ac.uk//id/eprint/3392/.

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Waterbirths have been available in the United Kingdom as a method of pain relief for childbirth for over two decades but the neonatal safety of birth in water remains unevaluated. Opponents of a waterbirth randomised controlled trial state randomisation would undermine women’s childbirth experience. In addition, little is known about midwives’ attitudes to waterbirths. This thesis addresses some of the lack of evidence by reporting the findings of two studies which had three aims: to investigate the feasibility of a waterbirth RCT to assess the effects of a waterbirth on the neonate, to explor

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Perello, Luís Fernando Carvalho. "Efeito das características do habitat e da matriz nas assembléias de aves aquáticas em áreas úmidas do Sul do Brasil." Universidade do Vale do Rio do Sinos, 2006. http://www.repositorio.jesuita.org.br/handle/UNISINOS/2295.

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Made available in DSpace on 2015-03-05T16:19:35Z (GMT). No. of bitstreams: 0 Previous issue date: 27<br>Nenhuma<br>O Parque Nacional da Lagoa do Peixe (PNLP), na zona costeira do Rio Grande do Sul, protege amostras importantes de quase todos os ecossistemas de áreas úmidas e espécies de aves aquáticas da região. Os movimentos migratórios e os deslocamentos entre áreas úmidas determinam importantes variações temporais de composição e abundância das assembléias de aves aquáticas. Os objetivos deste estudo foram descrever os padrões de composição e abundância de aves aquáticas em 27 áreas úmi

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D'Errico, Michael A. "Hydrology, vegetation and waterbird response to land management strategies in the San Luis Valley." Diss., Columbia, Mo. : University of Missouri-Columbia, 2006. http://hdl.handle.net/10355/5876.

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Thesis (M.S.)--University of Missouri-Columbia, 2006.<br>The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file (viewed on September 13, 2007) Vita. Includes bibliographical references.

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Marty, Joseph R. "Seed and waterbird abundances in ricelands in the Gulf Coast Prairies of Louisiana and Texas." Thesis, Mississippi State University, 2014. http://pqdtopen.proquest.com/#viewpdf?dispub=1548626.

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<p>Rice not collected by harvesters and natural seeds are important foods for waterfowl. Estimation of abundance of these seeds is necessary for calculating waterfowl habitat conservation needs in the Louisiana Chenier Plain (LCP) and Texas Mid-Coast (TMC). My objectives were to quantify dry mass of rice and other seeds from August-November 2010, and estimate waterbird abundances on farmed and idle ricelands in these regions from December 2010-March 2011. Rice abundance in farmed ricelands ranged from 159.7 kg/ha (CV = 66.6%) to 1,014.0 kg/ha (CV = 8.3%). Natural seed abundance in idle ric

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Duerr, Adam Edward. "Abundance of lost and discarded fishing tackle and implications for waterbird populations in the United States." Thesis, The University of Arizona, 1999. http://hdl.handle.net/10150/278698.

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Waterbirds have died of lead poisoning from ingesting lead sinkers in the United States and Europe. Other tackle and litter has also caused injury and mortality to waterbirds. Despite risks posed to waterbirds, no studies of the abundance of tackle or litter in freshwater systems of the United States have been completed. We tested the effectiveness of a metal detector to search for lost and discarded tackle, and developed a technique to correct densities of sinkers. We then quantified tackle and litter abundance at various sites around the United States. Tackle and litter densities varied amon

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Boggie, Matthew Arthur. "Linking Diet, Behavior, and Bioenergetics of a Migratory Waterbird to Evaluate Response to Wintering Ground Conditions." Thesis, New Mexico State University, 2018. http://pqdtopen.proquest.com/#viewpdf?dispub=11010180.

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<p> Rivers in semi-arid regions are highly sensitive and pressured yet can support diverse assemblages of species. In central New Mexico, the Rio Grande (River) is the lifeblood of the Middle Rio Grande Valley (MRGV), a semi-arid region which maintains large urban and agricultural centers and is also the principal wintering area for the Rocky Mountain Population of greater sandhill cranes (<i>Antigone canadensis tabida</i>). Human-induced environmental change has transformed the MRGV and habitat availability prompting concerns for the population. To address these concerns, I investigated dieta

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O'Hanlon, Eoghain Rua Patrick Allen O'Hanlon. "Evaluating the Effectiveness of Stormwater Quality Improvement Devices (SQIDs) in Sub-Tropical Conditions." Thesis, Griffith University, 2012. http://hdl.handle.net/10072/366913.

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Stormwater quality improvement devices (SQIDs) are frequently installed to improve the water quality of runoff to match particular water quality objectives (WQOs). However, there is a lack of data to evaluate the functioning and performance of these systems, particularly in sub-tropical climates. The primary aim of this study was to collect such data. Another aim was to establish baseline monitoring of an urban catchment before the installation of SQIDs and to forecast the improvement to the water quality after installation. This study investigates the performance of two SQIDs (a pond and wetl

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Roberts, Anthony J. "Winter Waterbird Ecology on the Great Salt Lake, Utah, and Interactions with Commercial Harvest of Brine Shrimp Cysts." DigitalCommons@USU, 2013. https://digitalcommons.usu.edu/etd/2042.

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Interactions among commercial fisheries and birds have been studied in open ocean ecosystems and at aquaculture facilities. On the Great Salt Lake (GSL), Utah, USA, a commercial harvest of brine shrimp (Artemia franciscana) eggs (i.e. cysts) occurs annually during fall and winter. Coinciding with commercial harvest is the use of the GSL by millions of waterbirds which has the potential to result in conflict among industry and birds. The objectives of my research were to examine fall and winter ecology of birds using the GSL and interactions with the brine shrimp cyst harvest. I examined the in

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Fleming, Kathryn Sarah. "EFFECTS OF MANAGEMEMT AND HYDROLOGY ON VEGETATION, WINTER WATERBIRD USE, AND WATER QUALITY ON WETLANDS RESERVE PROGRAM LANDS, MISSISSIPPI." MSSTATE, 2010. http://sun.library.msstate.edu/ETD-db/theses/available/etd-03272010-154430/.

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<p>No evaluations of plant and wildlife communities in Wetlands Reserve Program wetlands have been conducted in the Mississippi Alluvial Valley. Therefore, I evaluated active and passive moist-soil management (MTYPE) and early and late draw-down on plant communities, waterbird use, and water quality on 18 WRP lands, Mississippi, 2007-2009. Active-early sites had greater waterfowl Vegetative Forage Quality (VFQI), percentage occurrence of grass, plant diversity, and structural composition than passively managed sites (P < 0.10). I modeled variation in densities of wintering waterbirds; the best

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