Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 10 of 10 for “"freshwater conservation"”.
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Enhancing the conservation of freshwater biodiversity through improved freshwater conservation planning techniques
Freshwater ecosystems and biota are among the most endangered in the world. This current situation is even more disturbing when future threats of escalating human demand and global climate change are considered. Urgent measures are therefore needed to conserve freshwater ecosystems and sustain the …
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The Role of Images in Freshwater Conservation in South Africa: An Analysis of Images and Perceptions of Freshwater Fish
Freshwater biodiversity is highly threatened, but under-represented in media, and less well known than marine and terrestrial counterparts. The current lack of public awareness of freshwater species and ecosystems may limit freshwater conservation as a popular cause. The manner in which species are …
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Ecotourism and engagement with freshwater biodiversity: a case study of three Scottish lochs
… can be an effective tool for biodiversity conservation, as a way to connect people and nature though increased engagement and environmental education, with the ultimate aim to increase support for conservation, and provide benefits to local communities. It is seldom a focus in freshwater …
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An experimental test of intra- and inter-specific competition between invasive western mosquitofish (Gambusia affinis) and native plains topminnow (Fundulus Sciadicus)
1. Invasive species are a major threat to freshwater conservation. Species coexistence in invaded habitats depends on the relative strength of intra- versus inter-specific competition, where inter-specific competition from invasive species to native species is often stronger than intra-specific …
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Modeling Ecological Risks at a Landscape Scale: Threat Assessment in the Upper Tennessee River Basin
There is no single methodology toward freshwater conservation planning, and few analytical tools exist for summarizing ecological risks at a landscape scale. I constructed a relative risk model, the Ecological Risk Index (ERI), to combine the frequency and severity of human-induced stressors with …
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Investments in watershed services: understanding a new arena of environmental governance in the western United States
Issues around sustainably managing freshwater resources are one of the most challenging and timely issues affecting the globe. In response to rising social and ecological complexities, decision makers are faced with designing new policies and programs to effectively govern water resources. This …
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EFFECTS OF FLOW REGIME ON FISHES AND FISHERIES: FROM LIFE HISTORIES TO ECOSYSTEM SERVICES
Stream flow in freshwaters is considered a “master variable” influencing processes and traits from individual organisms to ecosystems. Due to this strong linkage, anthropogenic modification of flow regimes in freshwater ecosystems worldwide continues to have major impacts on populations, species, …
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Trajectories of Change in South Africa's Freshwater Fish Fauna
In South Africa, freshwaters are the most threatened ecosystems in the country, facing pressure from water abstraction, land-use change, pollution, invasive species and climate change. These anthropogenic pressures are directly impacting the diversity, abundance, and survival of freshwater fauna …
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The host-pathogen interactions of Chinook Salmon (Oncorhynchus tshawytscha) and the aquatic rhabdoviral pathogen infectious hematopoietic necrosis virus
… trout populations in aquaculture facilities and freshwater conservation hatcheries across the northern hemisphere. While disease occurs primarily in juvenile fish, assessment of IHNV surveillance records across the US Pacific Northwest revealed a great majority of IHNV detections to be in adult …
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Population biology of two key fish species and the dynamics and management of the trap fishery in Beung Borapet, Thailand
… assessment of management strategies such as Freshwater Protected Areas. This study has provided important information on aspects of the biology of knifefish (Notopterus notopterus) and catopra (Pristolepis fasciatus), two dominant freshwater fish species in Thailand, as well as catch and …