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Showing 1 to 20 of 30 for “"Bird Abundance"”.
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Influence of Habitat Characteristics on Wetland Bird Abundance and Species Richness at Ordway Prairie, South Dakota
… of glacial wetlands that influence abundance and species richness of wetland birds. Four bird surveys were conducted annually from mid-May through mid-August. Fourteen habitat variables were used to describe five wetland characteristics including wetland classification, emergent …
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Bird Abundance at Bird Feeders in Response to Temperature, Wind Speed and Precipitation During the Winter Season
… of this project is to explore how 23 different bird species respond to 3 climatic attributes. These attributes are lower than average temperatures, wind speed and precipitation level. Information about the bird species and all of the data associated with them is provided by Project FeederWatch …
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Forest songbird abundance and viability at multiple scales on the Monongahela National Forest, West Virginia
Songbird-habitat relationships were investigated using three interrelated studies, each at multiple scales, on the Monongahela National Forest, West Virginia. In each study I used landscape (25 km2), transect (2500 m), and point (50-m radius point count plot) scales.;In the first study, I …
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Bird Use of Cumberland Island's Freshwater Wetlands
… by saltmarsh and ocean. Many species of birds require freshwater wetlands as feeding, roosting and nesting grounds. However, the freshwater wetlands on Cumberland Island have been impacted by humans for centuries causing birds to abandon their historic nesting ground. Known land use …
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Evaluating Population-Habitat Relationships of Forest Breeding Birds at Multiple Spatial and Temporal Scales Using Forest Inventory and Analysis Data
… have documented declines of forest breeding birds in the eastern United States, but the temporal and spatial scales of most studies limit inference regarding large scale bird-habitat trends. A potential solution to this challenge is integrating existing long-term datasets such as the U.S. …
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Assessing the potential contribution of roads to variation in British bird populations
Roads and their traffic are known to affect bird species at both individual and population levels. Collisions with vehicles can cause direct mortality, and noise, light and chemical pollution can have sub-lethal impacts. Additionally, roads can cause habitat degradation, fragmentation and edge …
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Habitat use, nest success, and management recommendations for grassland birds of the Canaan Valley National Wildlife Refuge, West Virginia
Grassland bird populations have been declining due to increased habitat fragmentation, urbanization, and conversion of farmlands to other uses throughout the United States. However, idle hayfields and pastures in the eastern United States may provide adequate nesting habitat for grassland species …
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SAGE-GROUSE AND ENERGY DEVELOPMENT: INTEGRATING SCIENCE WITH CONSERVATION PLANNING TO REDUCE IMPACTS
… rates of lek inactivity and steeper declines in bird abundance 4 years after than immediately following development. I spatially prioritized core areas for breeding sage-grouse across Wyoming, Montana, Colorado, Utah and the Dakotas and assessed risk of future energy development. Findings showed …
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SAGE-GROUSE AND ENERGY DEVELOPMENT: INTEGRATING SCIENCE WITH CONSERVATION PLANNING TO REDUCE IMPACTS
… rates of lek inactivity and steeper declines in bird abundance 4 years after than immediately following development. I spatially prioritized core areas for breeding sage-grouse across Wyoming, Montana, Colorado, Utah and the Dakotas and assessed risk of future energy development. Findings showed …
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Landscape Ecology of Birds on Mount Leconte, Great Smoky Mountains National Park
<p>Landbirds form a significant component of wildlife resources in the Great Smoky Mountains National Park. The present study explored how forest structure and composition of deciduous-coniferous ecotones influenced diversity, richness, and relative abundance of bird species and how bird species …
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The effect of supplementary nectar feeders on bird-plant mutualisms in the Cape Fynbos, South Africa
Across the world, people feed birds to interact with nature. A variety of feeder types have been developed over the years to target a broad bird community. Attracting nectarivorous birds to gardens using supplementary nectar feeders is a popular human activity across the globe, but few studies have …
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Modeling avifauna responses to miombo woodland degradation in Serenje district, Central province, Zambia
… Avian community structure data was obtained from bird censuses that were conducted using the point count method in 50 m radius circular plots whereas vegetation data was obtained from 0.01 ha square plots that were established within the 50 m radius circular plots. PC-ORD © was used to determine …
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Modeling avifauna responses to miombo woodland degradation in Serenje district, Central province, Zambia
… Avian community structure data was obtained from bird censuses that were conducted using the point count method in 50 m radius circular plots whereas vegetation data was obtained from 0.01 ha square plots that were established within the 50 m radius circular plots. PC-ORD © was used to determine …
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Species-Habitat Relationships for the Breeding Birds of a Longleaf Pine Ecosystem
… the habitat associations for the breeding bird species and the effects of the current prescribed fire program on the avifauna are virtually unknown. Fort Bragg encompasses one of the largest, fire-dependent longleaf pine systems existing today and is a mosaic of forested habitats. I used …
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Assessing conservation of a tropical African estuary : waterbird disturbance, livelihoods, and ecotourism
… conservation in the Sabaki River Mouth Important Bird Area. This was achieved by assessing the vulnerability of waterbirds to disturbance from human activity in the estuary, the current use and importance of the area to local livelihoods, and the value (current and potential) of tourism. Waterbird …
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Effects of climate and land management changes on conservation of Mediterranean Cork oak woodlands and their bird communities
… changes on cork oak woodlands and their bird communities across the western Mediterranean Basin. Future climatic scenarios indicate that up to 60% of current cork oak woodlands may become unsuitable by 2080, especially in southern areas where they will be restricted to microclimatic …
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Weaving through the matrix: investigating the influence of urban land use on weaver bird movements into and out of Cape Town wetlands
… patch isolation, size and quality, had on weaver bird movement into and out of wetland sites in Cape Town, a growing city within a global biodiversity hotspot. Weaver bird movement data from 42 wetland sites were obtained through a long term mark - release - recapture project. Distance - based …
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Effects of Harvesting Ponderosa Pine on Birds in the Black Hills of South Dakota and Wyoming
… of timber harvest) is greater. I counted birds at 120 points dispersed in 20 harvested and 20 unharvested stands of ponderosa pine during May and June of 1993 and 1994 I tested hypotheses that abundance of individual bird species, species richness, species diversity, and species …
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SAGE-GROUSE AND THE HUMAN FOOTPRINT: IMPLICATIONS FOR CONSERVATION OF SMALL AND DECLINING POPULATIONS
… scales larger than previously known. Using bird abundance as a novel way to evaluate human impacts revealed relationships that would have been missed had we not incorporated lek size into analyses. For example, large leks are 4.5 times less likely to occur than small leks when agricultural …
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SAGE-GROUSE AND THE HUMAN FOOTPRINT: IMPLICATIONS FOR CONSERVATION OF SMALL AND DECLINING POPULATIONS
… scales larger than previously known. Using bird abundance as a novel way to evaluate human impacts revealed relationships that would have been missed had we not incorporated lek size into analyses. For example, large leks are 4.5 times less likely to occur than small leks when agricultural …
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