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Showing 1 to 20 of 72 for “"avifauna"”.
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Evolutionary Assembly of the Neotropical Montane Avifauna
Three fundamental processes are thought to underlie biodiversity patterns: speciation, dispersal, and extinction. Biodiversity patterns in species-rich tropical mountains vary along horizontal (barriers), and vertical (elevation) dimensions. In this dissertation, I set out to explore the interplay …
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The effects of recreational activities on aquatic avifauna
… and the numbers and behaviour of aquatic avifauna. Counts of waterbirds were carried out in the presence of people involved with various forms of recreational activity. These observations were made between February and May 1983. As a null hypothesis it is proposed that recreational …
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Avifauna and Anthropogenic Forest Disturbance in Two Biodiversity Hotspots.
… impact of anthropogenic forest disturbance on avifaunal communities in two biodiversity hotspots- lowland tropical forest in the Lambusango Forest Reserve within the Wallacean archipelago and Neotropical cloud forest in Cusuco National Park, Mesoamerica. Both these study areas possess diverse …
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Mapping the sensitivity of Lesotho's avifauna to wind farm developments
… over the impacts of wind farms on Lesotho's avifauna has resulted in calls for the development of an avian sensitivity map. Sensitivity maps have been developed in many countries, including South Africa, in order to provide locational guidance for the siting of wind farms and indicate areas …
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The Role of Avifauna in Paleodiet Reconstruction : An Arctic Case Study
… paleodiet. Zooarchaeological analysis of the avifaunal remains suggests that Pre-Dorset and Dorset groups on the Knud Peninsula preferentially hunted eider ducks, and birds were heavily processed for human consumption. Bird bones were also used in tool production. Stable isotope analysis of …
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Reliability of avifauna information in a computerized fish and wildlife information system
… study was designed to test the reliability of avifauna information retrieved from Biota of Virginia, BOVA, a computerized fish and wildlife information system developed at Virginia Polytechnic Institute and State. University. Reliability was defined as the percent of species that were detected …
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Modeling avifauna responses to miombo woodland degradation in Serenje district, Central province, Zambia
… in the study area as well as determining the avifauna community structure in the study area, and how it responds to miombo woodland degradation. Avian community structure data was obtained from bird censuses that were conducted using the point count method in 50 m radius circular plots whereas …
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Modeling avifauna responses to miombo woodland degradation in Serenje district, Central province, Zambia
… in the study area as well as determining the avifauna community structure in the study area, and how it responds to miombo woodland degradation. Avian community structure data was obtained from bird censuses that were conducted using the point count method in 50 m radius circular plots whereas …
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Effects of Land Use on Avifauna in the Lake Thompson Watershed, South Dakota
Roadside counts of avifauna were conducted during 1995 and 1996 in the Lake Thompson Watershed (L TW) to assess breeding bird abundance and evaluate the effects of land use on their distribution. Waterfowl were surveyed first, then all breeding birds, then ring-necked pheasant (Phasianus colchicus) …
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The effect of grassland shifts on the avifauna of a South African savanna
… or other grassland state. This study compared avifaunal assemblages of grazing lawns and bunch grasslands to assess how bird species of the park might change with shifts in the grassland mosaic. Distinct bird communities were associated with each grassland type, including several specialists, …
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The Role of Disease and Predation in The Decline of Guam's Avifauna (Extinction, Boiga Irregularis)
Guam's forest avifauna has declined sharply while avian populations remained relatively stable on other nearby islands. This study examined the roles of avian disease and predation by the introduced brown tree snake (Boiga irregularis) in causing the decline.
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Cultural ecosystem services and the avifauna of the Western Cape: a social-ecological systems investigation
The ecosystem services concept has become inextricably linked to the economic valuation approach. Such an approach rests upon a triple incoherency, inadequately accounting for relationships between natural components, social and natural components, and within society itself. These incoherencies …
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Landscape Characteristics Affecting Habitat Use and Productivity of Avifauna on Stock Ponds in Western South Dakota
The effects of local- and landscape-level characteristics on nongarne wetland bird occurrence and density and waterfowl pair and brood density and rates of productivity (broods/ 1 00 pairs) were evaluated in 1 999 and 2000 in western South Dakota. Nongame wetland bird use for the 1 0 most common …
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An Assessment of Direct Mortality to Avifauna from Wind Energy Facilities in North Dakota and South Dakota
<p>Renewable energy sources have the potential to provide enough energy to exceed current energy demands. In the U. S., 9% of energy consumption in 2011 was derived from renewable sources. Currently, the most technically developed and cost-effective source is land-based wind energy and the U.S. …
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Análise da composição e da distribuição geográfica da avifauna das restingas do Estado do Rio de Janeiro
… morphoclimatic domains, shows that the studied avifauna is composed by generalists species, which use a great variety of ambients. However, rather than being an avifauna originated from many biomes, the avifauna of the study area seems to be an Atlantic Forest avifauna. The strong influence of …
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Composição da avifauna em uma parcela de vegetação perturbada na Baixada, em Majé, Estado do Rio de Janeiro, Brasil
… These groups more typically represent the avifauna of temperate zones. There is a greater proportion of species endemic to eastern Brazíl among the forest interior birds than among the edge inhabitants. There are relatively more endemic species among nectarivores than among either …
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