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Breeding Bird Survey Relative Abundance for Acadian Flycatcher
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Greater sage-grouse (Centrocercus urophasianus) have been declining both spatially and numerically throughout their range due to anthropogenic disturbance and loss and fragmentation of sagebrush (Artemisia spp.) habitats. Understanding how sage-grouse respond to these habitat alterations and disturbances, particularly the types of disturbances and extent at which they respond, is critical to designing management actions and prioritizing areas of conservation. To address these needs, we developed this spatially explict model of the relationship between occurrence and abundance of greater sage-grouse and multi-scaled measures of vegetation, abiotic, and disturbance in the Wyoming Basins Ecoregional Assessment (WBEA)...
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Conclusions: Frogs and toad species were more abundant and diverse where habitat patch diversity was high or where there were forested wetland edges. Relative abundances of amphibian populations correlated positively with metrics such as the length of edge between forest and wetland, and negatively with the presence of agricultural and urban land. Thresholds/Learnings: Synopsis: This study examined landscape-level relationships for frogs and toads by measuring associations between relative abundance and species richness based on survey data derived from anuran calls and features of land cover maps for Iowa and Wisconsin. Relative abundances correlated positively with metrics such as the length of edge between forest...
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Greater sage-grouse (Centrocercus urophasianus) have been declining both spatially and numerically throughout their range due to anthropogenic disturbance and loss and fragmentation of sagebrush (Artemisia spp.) habitats. Understanding how sage-grouse respond to these habitat alterations and disturbances, particularly the types of disturbances and extent at which they respond, is critical to designing management actions and prioritizing areas of conservation. To address these needs, we developed this spatially explict model of the relationship between occurrence and abundance of greater sage-grouse and multi-scaled measures of vegetation, abiotic, and disturbance in the Wyoming Basins Ecoregional Assessment (WBEA)...
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Data files in this data series represent migrating bird count and habitat information collected during 1989, 1991, 1993, and 1994 field seasons at 13 riparian sites along the San Pedro River and its tributaries in southeastern Arizona, USA. At each site observations were made at up to 20 points, separated by 100 m arrayed along the riparian zone. Observation periods started at 20 minutes after sunrise, lasted for 7 minutes at each point and were completed within 4 hours. Bird detection and species identification were based on visual sighting, song, and call. Recorded observations were the number of individuals of each detected species detected using each detection method at each point and site within specified distance...


map background search result map search result map Effects of landscape composition and wetland fragmentation on frog and toad abundance and species richness in Iowa and Wisconsin, USA. BBS Louisiana Waterthrush BBS Acadian Flycatcher BBS American Redstart BBS Blue-winged Warbler BBS Kentucky Warbler BBS Prairie Warbler BBS Ovenbird BBS Dusky Flycatcher BBS Willow Flycatcher BBS Warbling Vireo BBS Western Flycatcher BBS MacGillivray's Warbler BBS Lincoln's Sparrow BBS Hermit Warbler BBS Nashville Warbler BBS Swainson's Thrush Greater sage-grouse general use relative abundance in the Wyoming Basins Ecoregional Assessment area Greater sage-grouse roost site relative abundance in the Wyoming Basins Ecoregional Assessment area Migrating Bird Survey Data Along the San Pedro River and its Tributaries, Southeastern Arizona, 1989-1994 Migrating Bird Survey Data Along the San Pedro River and its Tributaries, Southeastern Arizona, 1989-1994 Effects of landscape composition and wetland fragmentation on frog and toad abundance and species richness in Iowa and Wisconsin, USA. Greater sage-grouse general use relative abundance in the Wyoming Basins Ecoregional Assessment area Greater sage-grouse roost site relative abundance in the Wyoming Basins Ecoregional Assessment area BBS Louisiana Waterthrush BBS Acadian Flycatcher BBS American Redstart BBS Blue-winged Warbler BBS Kentucky Warbler BBS Prairie Warbler BBS Ovenbird BBS Dusky Flycatcher BBS Willow Flycatcher BBS Warbling Vireo BBS Western Flycatcher BBS MacGillivray's Warbler BBS Lincoln's Sparrow BBS Hermit Warbler BBS Nashville Warbler BBS Swainson's Thrush