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 38 for “"habitat conservation"”.
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Habitat conservation planning under the Endangered Species Act: is it ecosystem management?
Habitat conservation planning under the Endangered Species Act has been compared to ecosystem management by Secretary of Interior, Bruce Babbitt. Yet, ecosystem management, an emerging paradigm for public lands management, has not been defined or criteria established for determining if actions …
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Habitat Conservation Plan Implementation: Keeping Promises for Adaptive Management Within a "No Surprises" Policy
… for endangered and threatened species covered in Habitat Conservation Plans (HCP). Introduced in 1982 as an amendment to the Endangered Species Act (ESA), Habitat Conservation Plans are negotiated agreements that mitigate the incidental "take" (killing, harming) of endangered and threatened …
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Human Dimensions of Habitat Conservation on Western Agricultural Lands: Engaging Producers in the Conservation Conversation
Achieving long-term conservation gains through conservation incentive programs on agricultural lands requires a deep understanding of landowner needs and interests. However, social science research related to private lands conservation programs authorized by the United State farm bill lags behind …
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The social and political determinants in the formation and implementation of habitat conservation policy : the Wildlife and Countryside Act 1981.
… of the 'voluntary system' for the protection of habitats in the Wildlife & Countryside Act 1981 in order to explain its existence and form and also its effectiveness. The identification of the determinants involves consideration of a number of hypotheses. A positive proof shows why the voluntary …
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Determining the Suitability of Functional Landscapes and Wildlife Corridors Utilizing Conservation GIS Methods in Denton County, Texas.
… which accelerated the loss and removal of native habitat and wildlife. This research sought out to identify the remaining natural areas which retain their natural features and support wildlife. Research methodology included fundamental principles of Conservation Planning, Geographical Information …
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The influence of woodlot size and location in suburban and rural matrices on bird species richness and individual abundance
… larger woodlots. Tufted Titmouse may exploit the habitat structure of smaller woodlots in fragmented landscapes to increase access to foraging habitat. Conservation strategies that reduce fragmentation and promote greater habitat diversity may lead to greater bird species diversity and …
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Targeting of Ecosystem Goods and Services:Directing Agri-Environmental Policy Innovation
… a hybrid method using representative wildlife habitat conservation policy approaches that set-aside land from crop production by purchasing or leasing land. The GIS land selection models developed for this research assessed the net benefits for wildlife based on the opportunity cost of idling …
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Potential Adoption of Native Fruit and Nut Tree Riparian Buffers on Private Land in Western Virginia
… retention, and aquatic and terrestrial wildlife habitat. Conservation of riparian areas can be conflicting due to loss of productive land for other uses. Agroforestry riparian buffers planted with native fruit and nut trees could help integrate conservation and production in this valuable space …
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Human and environmental influences on the distribution and abundance of arapaima in river floodplains of the Lower Amazon
… uses a multi-scale approach to understand the habitat factors controlling the distribution and abundance of arapaima (Arapaima spp.) in river floodplains of the lower Amazon River, near the municipality of Santarém, Para State, Brazil. In chapter 1, a study of eight environmental variables in …
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Macro and Micro Litter Accumulation in the San Marcos River San Marcos, Texas, USA
… spring-fed by the Edwards Aquifer and provides habitat to seven federally-listed species, some of which are only found within the first few kilometers of the main stem. Thousands of tourists recreate on the San Marcos River during the late spring and summer, and these numbers increase every …
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British botanic gardens and the biodiversity crisis, c.1960 – c.2000
… initiatives of the International Union for the Conservation of Nature and follows through to the early 2000s when many of the projects under discussion evolve into something new or end completely. It is driven by a research question that has deep significance for society today: how have we …
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First-year growth and survival of habitat revegetation trials on the lower Colorado River, Mexico
… damage, and the CRD remains a vital area for habitat conservation and restoration. This project aimed to test conclusions drawn from similar projects in the United States and show that revegetation projects are possible along the lower Colorado River in Mexico. From November 2006 to October …
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First-year growth and survival of habitat revegetation trials on the lower Colorado River, Mexico
… damage, and the CRD remains a vital area for habitat conservation and restoration. This project aimed to test conclusions drawn from similar projects in the United States and show that revegetation projects are possible along the lower Colorado River in Mexico. From November 2006 to October …
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Conservation and recovery of the Yellow Mud Turtle (Kinosternon flavescens) in Mason and Tazewell counties, Illinois
… in the study area despite protection of suitable habitat. The study area lies in the central Illinois range of K. flavescens, where much of the landscape has been modified for agricultural use, leaving very little terrestrial habitat suitable for aestivation, nesting and overwintering. Because K. …
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A Comparison of Land Use and Land Cover in Public Lands of the Northwestern Great Plains and High Plains Ecoregions and the Implications For Grassland Birds
<p>Loss and degradation of grassland habitat are driving forces that contribute to widespread declines of grassland birds in the United States. Many studies have evaluated habitat needs for the conservation of grassland birds, but the relative contribution of public lands in representing and …
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Factors Affecting Songbird Richness, Abundance, and Nest Survival in Riparian Forests in a Midwestern Agricultural Landscape
… in central Illinois are important breeding habitat for songbirds in an agriculturally dominated landscape. Research has suggested that songbirds are influenced by habitat at multiple scales (i.e., habitat fragmentation, edge effects, exotic species), therefore it is necessary to know which …
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An Evaluation of Duck and Ring-Necked Pheasant Nest Survival and Nest Density in Relation to Patch Size and Landscape Variables in Eastern South Dakota
… arrangement of grasslands affect targeted conservation strategies. Therefore, the objectives of this study were to: (1) evaluate the relationship of duck and pheasant nest survival and nest density between different grassland patch sizes, (2) evaluate the effects of woody cover (i.e., …
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Functional connectivity of coral reef fishes in a tropical seascape assessed by compound-specific stable isotope analyses
The ecological integrity of tropical habitats, including mangroves, seagrass beds and coral reefs, is coming under increasing pressure from human activities. Many coral reef fish species are thought to use mangroves and seagrass beds as juvenile nurseries before migrating to coral reefs as adults. …
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Optimal bioeconomic management of changing marine resources
… whether through harvest or through broad-scale habitat change. Historically, few models have accounted for such trends over time, and even fewer have been used to study how trends affect optimal harvests. I developed and analyzed several models that explore, first, endogenous change caused by …
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The effects of urbanization on winter avian diversity: a citizen science and GIS study
As the human population continuously increases, habitat transformation due to urban expansion is inevitable, affecting many wildlife species. Birds have become a frequently used model species for studying the effects of urbanization on wildlife populations due to their environmental sensitivity and …
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