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 20 of 42 for “"critical habitat"”.
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Critical habitat: Picturing extinction, conservation, and the American animal in the long twentieth century
Critical Habitat’: Picturing Extinction, Conservation, and the American Animal in the Long Twentieth Century, looks at images of at one time endangered or threatened animals in order to develop what I have named a specifically American conservation aesthetic. Within a conservation aesthetic images …
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Gulf Sturgeon (<i>Acipenser oxyrinchus desotoi</i>) Pre-Restoration Occupancy Patterns on Ship Island, Mississippi Sound with an Evaluation of Designated Critical Habitat Use by Eastern and Western Population Segments
<p>Critical spawning and feeding habitat was designated for federally threatened, anadromous Gulf Sturgeon (GS) to aid in population recovery. This study examined GS occupancy, habitat use, and movement through critical habitat monitored by the Ship Island (SI) acoustic array during overwintering …
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General biology of woodland caribou based on collection of local and traditional knowledge in north-central Saskatchewan
… research effort, the current distribution and critical habitat of woodland caribou in north-central Saskatchewan is still poorly understood. Drawing upon the knowledge of a selected target group, interviews have been conducted to attain local and traditional knowledge on woodland caribou. Local …
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A Policy Analysis of the Endangered Species Act
… recovery, and recovery plan presence and critical habitat designation also increase the odds of recovery. The analysis found no relationship between species recovery and average annual funding,and species listed as “threatened” were just as likely to be recovering as those listed as …
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Seasonal Habitat Use of The Florida Manatee (Trichecus Manatus Latirostris) In The Crystal River Natural Refuge With Regards To Natural And Anthropogenic Factors
… factors work together to influence species habitat use. Kings Bay in Crystal River, Florida serves as critical habitat for the Florida manatee, but is also used extensively by humans. This study documented the seasonal dispersion and behavioral patterns of manatees in Kings Bay with regards …
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Intertidal Habitat Utilization by Endangered Green Sturgeon (Acipenser medirostris), Willapa Bay, Washington
… study looks at a portion of the designated critical habitat for the threatened southern distinct population segment of green sturgeon (Acipenser medirostris) in Willapa Bay, Washington. Willapa Bay is an intermediate size (258.7mi2) estuary on the southwest coast of Washington State, …
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Fish Assemblage Structure Before and After a Marine Heatwave in West Hawai'i
… marine organisms that use these areas as critical habitat. In this study, we examined coral reef resilience to climate change by analyzing changes in fish assemblages following a marine heatwave. We analyzed 11 years of subtidal video survey data in three areas in West Hawai'i, capturing a …
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Holocene Formation and Evolution of Horn Island, Mississippi, USA
… along the Mississippi-Alabama chain, provides critical habitat, helps regulate estuarine conditions in the Mississippi Sound, and reduces wave energy and storm surge for the mainland. This study integrates 2,200 km of high-resolution geophysics, 35 sediment cores, and 15 radiocarbon ages to …
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Juvenile and subadult Gulf Sturgeon (Acipenser desotoi) use of the Pascagoula River estuary
… under the Endangered Species Act. They reside in habitats across the northern Gulf of Mexico including coastal rivers, estuaries, and marine waters, making annual migrations between freshwater and marine habitats for spawning/summer resting and feeding, respectively. Since past studies prioritize …
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Early Recruitment of <i>Crassostrea virginica</i> to Restored and Natural Oyster Reefs in the Western Mississippi Sound: Larval Supply and Post-Settlement Success
… for resupplying adult populations in the face of habitat loss. Coastal oyster populations are challenged by freshwater input, hypoxia, predation and overfishing. Consequently, substantial efforts have been dedicated toward oyster restoration within the northern Gulf of Mexico. The overall …
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Biomechanics of North Atlantic right whale bone : mandibular fracture as a fatal endpoint for blunt vessel-whale collision modeling
… whale, Eubalaena glacialis, one of the most critically endangered whales in the world, is subject to high anthropogenic mortality. Vessel-whale collisions and entanglement in fishing gear were indicated in 27 (67.5%) of the 40 right whales necropsied between 1970 and December 2006. Of those, …
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Modeling the Distribution of the Northern Hardwood Forest Type in Carolina Northern Flying Squirrel (Glaucomys sabrinus coloratus) Recovery Areas of the Southern Appalachians
The northern hardwood forest type is a critical habitat component for the endangered Carolina northern flying squirrel (CNFS; Glaucomys sabrinus coloratus) for denning sites and corridor habitats between montane conifer patches where the squirrel forages. This study examined terrain data, and …
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Efficacy Of Constructed Wetlands Of Various Depths For Natural Amphibian Community Conservation
<p>Wetlands provide critical habitat for a diverse group of amphibians and provide important ecosystem functions and services to humans. Despite this, most natural wetlands have been lost to land use practices. Consequently, constructing wetlands has become a common practice to mitigate for removed …
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Biomechanics of North Atlantic right whale bone : mandibular fracture as a fatal endpoint for blunt vessel-whale collision modeling
… whale, Eubalaena glacialis, one of the most critically endangered whales in the world, is subject to high anthropogenic mortality. Vessel-whale collisions and entanglement in fishing gear were indicated in 27 (67.5%) of the 40 right whales necropsied between 1970 and December 2006. Of those, …
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Using spatial ecology data to inform development and mitigation of a trap rock quarry in Blanding’s turtle (Emydoidea blandingii) habitat
… degradation of wetlands and surrounding upland habitat, alteration of movement corridors, accidental mortality, and increased risk of nest and turtle predation. These impacts, in turn, can cause changes in patterns of energy allocation, skewed sex ratios and changed demography, which may …
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Effects of Large-Scale Gold Mining on Habitat Use and Selection by a Resident Population of American Pronghorn
… natural resources, are reducing and fragmenting habitat for wildlife across the western United States. The effects of these disturbances on wildlife populations have been explored by studying populations that migrate through oil and gas fields or wind and solar energy facilities. Our goal was to …
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The Winter Ecology of the Piping Plover (Charadrius melodus) in Coastal Georgia
… importance to wintering Piping Plovers. Critical habitat designations should take account of this winter-island variation.</p>
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Avian Distribution Patterns and Conservation in Amazonia
… future, most of them associated with riverine habitats. To evaluate these predictions, I conducted a detailed study on two riverine species: the Rio Branco Antbird (Cercomacra carbonaria) and the Hoary-throated Spinetail (Synallaxis kollari). Both are threatened and endemic to the gallery …
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Remotely operated vehicle exploring ichthyofauna association with habitat from shore-shelf, in an endemism hotspot in South Africa
… (ROV) explored the regions’ fish and benthic habitats and investigated their associations. This study’s results provide quantitative information on fish and habitat diversity in the intermediate depths off the Kei river mouth. Observations of rare, commercially important, yet critically …
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