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 13 of 13 for “"forest birds"”.
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'Islands' in an island: multiscale effects of forest fragmentation on lowland forest birds in Taiwan
… human population has caused severe lowland-forest loss and fragmentation in the western coastal plain in Taiwan over the past centuries. The goal of this study is to explore the multiscale impacts of forest fragmentation on species richness and community composition of lowland-forest birds …
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The Biodiversity Mirage: the Effects of Habitat Degradation and Exotic Predators on Ground-Dwelling Forest Birds, Tenrecs and Lemurs in Northeastern Madagascar
… was to examine the response of ground-dwelling forest birds, tenrecs (Lipotyphla: Tenrecidae) and lemurs to habitat degradation and the presence of exotic predators, and monitor population trends at resurveyed sites from 2008 to 2013. Using camera trap surveys and distance sampling, we observed …
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Diversification of Antbirds Associated with Amazonian Flooded Forest Habitats
… basin. In contrast to Amazonian understory forests birds, which replace each other across river barriers, a strong barrier effect has not been reported for flooded forest species, which may experience rivers as dispersal corridors rather than as barriers. The apparent lack of geographic …
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Land Cover Change and the Breeding Bird Survey: Rates of Change in Relation to Roads
… its effects on three bird categories (grassland, forest, and urban). Objective number 3 (Chapter 4) is an assessment of habitat suitability for 4 grassland bird species over five dates (1973, 1980, 1986, 1992, 2000) in the prairie pothole regions of Western Minnesota and Northwest Iowa. Utilizing …
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Biogeographical and ecological aspects of forest bird communities in eastern Tanzania.
… on the structure and species composition of forest bird communities. My principal study areas were in the Usambara Mountains in north-eastern Tanzania, though other forests were visited. My research concentrated on three main aspects. 1. Factors affecting forest bird distribution. I compared …
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The Direct and Indirect Effects of Insectivory by Birds in Two Neotropical Forests
Most forest birds include herbivorous arthropods in their diet. Experimental tests of whether bird predation can affect arthropod abundance and plant damage are few, however, and restricted to saplings in relatively low diversity systems. In two lowland tropical forests, I tested whether birds …
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Evaluating wildlife response to vegetation restoration on reclaimed mine lands in southwestern Virginia
… (clearcut) and relatively undisturbed mature forest. Birds were surveyed during early mornings throughout the breeding season in 2007 and 2008 using the point count method. Amphibians were surveyed using artificial cover, constrained-time night searches, and auditory pond surveys. Microhabitat …
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Padrões atuais de distribuição de aves florestais na região sul do Estado do Espírito Santo, Brasil
… of current distribution patterns of resident forest birds in southern Espírito Santo state. Inasmuch, a qualitative inventory of the avifauna was conducted in diverse forest fragments within the study area. Results were compared with distributional data for the study area, adjacent regions, …
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Evolutionary Assembly of the Neotropical Montane Avifauna
… to shape diversification of Neotropical cloud forest birds. In the second chapter, I conducted comparative analyses using species-specific ecological traits, and 3,175 mtDNA sequences collected across the range of 45 co-distributed birds. First, I found that niche breadth, dispersal ability, …
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Avian Community Structure Associated With Woodland Habitats in Fragmented and Unfragmented Lanscapes in Western South Dakota
… production is decreasing habitats for grassland birds at alarming rates in the northern Great Plains. Establishment of planted woodlands (e.g., shelterbelts and windbreaks) has further fragmented remaining grasslands and created abrupt boundaries that exacerbate edge effects. My objectives were …
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IMPROVING CONSERVATION IMPACT THROUGH PRIORITY-SETTING AND EVALUATION
… community and state-led efforts to conserve forests in Madagascar, and spatial planning for co-benefits for ecosystem services and biodiversity in the U.S. I also reviewed the literature and developed recommendations intended to build capacity for conducting conservation impact evaluation.In …
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AVIAN COMMUNITIES MONITORED ALONG A SUCCESSIONAL CHRONOSEQUENCE IN BOTTOMLAND HARDWOOD FORESTS IN THE LOWER MISSISSIPPI ALLUVIAL VALLEY
<p>Bottomland hardwood forests in the Lower Mississippi Alluvial Valley have been extensively reduced due to agriculture conversion and altered hydrology. Remnant forests have undergone further degradation from sources such as a lack of forest management, invasive species, and reduced regeneration …