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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 100 for “"Habitat-type"”.
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Effect of Fragmentation and Habitat Type on Coastal Nekton in Mississippi
… the clear need for the protection of these habitats, anthropogenic use of coastal wetlands has increased in frequency and intensity, resulting in the fragmentation of once continuous habitats. A central challenge to assessing the impact of marsh fragmentation is the lack of quantitative …
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A Comparison of the Index of Biotic Integrity by Habitat Type in Swan Creek, Southwest Missouri
… Within these reaches we sampled individual habitats, runs, pools, and/or riffles, and scored them in the same manner. Scores from the specific habitats were then compared to the scores from that site's entire stream reach. Scores from the individual habitats were consistently lower than …
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An examination of temporal trends, regional variation, and habitat-type differences in site-level Floristic Quality, and their implications for the use of Floristic Quality Assessment
… patterns, their variation among different habitat-types, and their trends over time. I used site-level vegetation data from an Illinois statewide habitat monitoring program (Critical Trends Assessment Program, CTAP) to characterize FQA metric properties across regions and habitat-types. I …
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Terrestrial Movements and Habitat Use of Gopher Frogs (Rana capito) at Fort Benning, Georgia
… seasons to study their terrestrial movements and habitat use in a longleaf pine- sandhill area on the Fort Benning Military Reservation, Georgia. The telemetry research was conducted in response to the need for biological data concerning gopher frog terrestrial habits. Ultimately the data could …
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A baited remote underwater video survey of the Goukamma Marine Protected Area's ichthyofauna and a subsequent community structure comparison with the Betty's Bay, Stilbaai, and Tsitsikamma Marine Protected Areas
… made of rocky reefs. The imbalance in protected habitat type ratios prompted a proposal for an extension of the MPA's seaward boundary, referred to as the new no-take zone (NNTZ), and a restructuring of its eastern boundary, referred to as the new exploited zone (NEZ). The proposed boundary …
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Large-scale habitat relationships of neotropical migratory birds
… relationship of bird assemblages and species to habitat patterns over landscapes composed of a mosaic of habitat elements. I surveyed songbirds using a variation of the variable circular plot method during the 1994 and 1995 breeding seasons on 20 sites ranging in size from 50 to 72 ha on the …
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Climate change impacts on habitats and biodiversity : From environmental envelope modelling to nature conservation strategies
… species distribution, diverse consequences for habitats, changing communities as well as biotic interactions and general aspects of diversity are the major challenges. The potential climatic modifications can alter deeply the distribution of animals and plants. Range changes due to recent …
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Effects of edge and coarse woody debris on small mammal communities in riparian and upland habitats in northern West Virginia
… woody debris (CWD) volume in riparian and upland habitats of the central Appalachian Mountains has received little attention. The objectives of this study were to: (1) Perform a faunal survey of the Camp Dawson Collective Training Area in Preston County, West Virginia with an emphasis on rare and …
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Linkages between Marsh Fragmentation, Prey Availability, and Blue Crab (<i>Callinectes sapidus</i>) Abundance and Mortality
<p>Coastal marshes are important nursery habitats for many commercially important invertebrate species, yet these marshes are being lost worldwide at an unprecedented rate due to subsidence, erosion, climate change, and human activity. As marsh is lost, it creates the opportunity for submerged …
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Carrion-associated arthropods in rural and urban environments
… attracted to pig carcasses in rural and urban habitats in Northwest Indiana. The species and number of carrion-associated arthropods that are found at a carcass vary with habitat type, month, and stage of decomposition. Lucilia sericata (Diptera: Calliphoridae) is a synanthropic species that …
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Demographic and environmental determinants of reproductive success in Synthyris bullii, a rare endemic species
In recent decades, the conversion of natural habitat to human use has proceeded at a greatly accelerated pace. This habitat destruction and degradation has resulted in the loss of much of the world's biodiversity. Some populations have been preserved in remaining habitat reserves, but their …
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Patterns of plant species richness and diversity across two habitat types in the Upper Karoo, South Africa
… relative cover, and growth form diversity in two habitat types (i.e. plains and rocky dolerite hillslopes), and along a longitudinal environmental gradient. A pairwise floristic survey approach was implemented, using modified Whittaker plots in each habitat type at 30 sites within the shale gas …
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Comparative studies of the microbial composition and diversity of container-dwelling mosquitoes
… influenced by host species, life stage, larval habitat type, and larval exposure to commonly used pesticides. Analysis of the microbial communities of larval stages of Aedes japonicus and Aedes triseriatus collected from tree hole and waste tire habitats revealed the bacterial richness to be …
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Riparian Restoration, Success Criteria, and Application to the BART Sabrecat Creek Riparian Restoration Project in Fremont, California
… the watershed, surrounding land use, adjacent habitat, and riparian buffers; special-status species, endangered species, and habitat type and structure; invasive species control; water quality and hydrology; and soil and soil microbial communities. Three methods of evaluating restoration …
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Gut content analysis of trapped mustelids and trend analysis for ship rats and stoats over six trapping seasons at Mount Taranaki : A thesis submitted in partial fulfilment of the requirements for the degree of Master of Natural Resource Management and Ecological Engineering at Lincoln University
… of mustelids, identify spatial trends, use of habitats, and the effect of elevation and habitat type on capture rates of stoats and ship rats, so that trapping networks can be focussed in areas where they are most needed. In this study, the gut content of 31 stoats, nine weasels and five …
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Correspondence Between Aquatic Ecoregions and the Distribution of Fish Communities of Eastern Oklahoma
… to include major drainage basins and physical habitat attributes for some areas to adequately partition variance in key measures of biological integrity. Results from canonical correspondence analysis indicated that substrate size and habitat type were the primary physical habitat variables …
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Effects of coastal dynamics on colonization of Louisiana wetland plants by fungal endophytes
… plants in southeast Louisiana. I explored two types of endophytes: root and foliar. Each of these groups is known to live within apparently healthy host plants without causing symptoms of disease; therefore, plants are thought to benefit from this association. Few studies, however, have shown …
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Effects of fishing on a coral reef fish assemblage in Northeastern Brazil
… of people. Reef fisheries exploit different habitats and typically target a diversity of species caught with a matching diversity of fishing gears. However, previous studies of reef fisheries have generally lacked detailed information on the catch and effort by gear and habitat type. In this …
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Behavioral Study of the Red Lechwe antelope (Kobus leche leche) on Double D ranch, Bastrop County, Texas
… County, Texas between July 1997 and August 1998. Habitat use, as well as the major behaviors, feeding, resting, and mating, of lechwe introduced in Texas were compared to that described for lechwe in Africa. Open grassland is the preferred habitat type for both African and Texas lechwe, but Texas …
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Abundance and Nesting Success of Acadian Flycatchers (Empidonax Virescens) at Different Scales of Fragmentation in Illinois, United States of America
… that were measured at the nest patch and habitat type did not influence nesting success. Local and landscape fragmentation effects appear to be the strongest correlates of nesting success of Acadian Flycatchers in Illinois, but other variables such as vegetation structure may account for …
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