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Avian Point Count, Habitat, and Covariate Data for Subarctic Bird Abundance, Seward Peninsula, Alaska, 2012-2014
This data package contains three tables: avian counts by species, habitat type, a covariate information used for analysis of bird surveys conducted between 2012 and 2014 on the Seward Peninsula, Alaska, as part of the USGS Changing Arctic Ecosystems Initiative. We conducted 1,208 point counts on 12 study blocks from 2012–2014 in northwestern Alaska, using repeated surveys to account for imperfect detection of birds. We considered the importance of shrub height, density of low and tall shrubs (i.e. shrubs >0.5 m tall), percent of ground cover attributed to shrubs (including dwarf shrubs <0.5 m tall), and percent of herbaceous plant cover in predicting bird abundance
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Avian Habitat Data, Seward Peninsula, Alaska, 2012
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This data package contains two tables with habitat measurements from each sampling point used in avian point-transect surveys on the Seward Peninsula in 2012 and the locations of those sites. Measurements include percent cover and canopy height of alder (Alnus spp.), dwarf birch (Betula spp.), ericaceous shrubs (e.g., Empetrum, Vaccinium spp.), herbaceous, lichen (e.g., Cladonia spp.), and willow (Salix spp.).
Avian Habitat Data, Seward Peninsula, Alaska, 2012
공공데이터포털
This data package contains two tables with habitat measurements from each sampling point used in avian point-transect surveys on the Seward Peninsula in 2012 and the locations of those sites. Measurements include percent cover and canopy height of alder (Alnus spp.), dwarf birch (Betula spp.), ericaceous shrubs (e.g., Empetrum, Vaccinium spp.), herbaceous, lichen (e.g., Cladonia spp.), and willow (Salix spp.).
Avian Point Transect Survey, Seward Peninsula, Alaska, 2012
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This data package contains three tables: 1) avian point-transect survey data collected on the Seward Peninsula in 2012, 2) locations of all survey sites, and 3) an avian taxonomy table for reference.
Comparison of Acoustic Recorders and Field Observers for Monitoring Tundra Bird Communities in Northwestern Alaska
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Acoustic recorders can detect the presence of birds and these detections may be used for the purpose of population abundance or estimation. This monitoring project compared the abundance of tundra-breeding birds detected through both acoustic monitoring and observational surveys. The data package is comprised of four tables: (1) habitat type, including vegetation height at sites where acoustic recorders and human observer point counts occurred, 2) bird detections obtained using the observer methods, 3) bird detections obtained using the acoustic monitoring method, and 4) taxonomy table of bird species detected during both observer and acoustic recorder survey methods.
Comparison of Acoustic Recorders and Field Observers for Monitoring Tundra Bird Communities in Northwestern Alaska
공공데이터포털
Acoustic recorders can detect the presence of birds and these detections may be used for the purpose of population abundance or estimation. This monitoring project compared the abundance of tundra-breeding birds detected through both acoustic monitoring and observational surveys. The data package is comprised of four tables: (1) habitat type, including vegetation height at sites where acoustic recorders and human observer point counts occurred, 2) bird detections obtained using the observer methods, 3) bird detections obtained using the acoustic monitoring method, and 4) taxonomy table of bird species detected during both observer and acoustic recorder survey methods.
Avian Point-Count Data from Boreal Alaska and Maps of Predicted Population Density for Lesser Yellowlegs, Olive-sided Flycatcher, and Rusty Blackbird, 2001-2020
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This data package contains 1) field data and 2) predicted distributions of three species of boreal-nesting birds in interior Alaska: Lesser Yellowlegs (Tringa flavipes), Olive-sided Flycatcher (Contopus cooperi), and Rusty Blackbird (Euphagus carolinus). The data are compiled from several monitoring programs: Alaska Landbird Monitoring Survey, Alaska Off-road Point-count Program, Susitna-Watana Hydroelectric Project, Tetlin Forest Inventory Analysis, and surveys on Department of Defense lands by the U.S. Fish and Wildlife Service. Each program conducted avian point-count surveys in some or all years (2001-2020) at locations in Alaska. This dataset includes only the locations within Bird Conservation Region 4 (BCR4; Bird Studies Canada and NABCI 2014) and south-central Alaska. The dataset includes a number of remotely-sensed covariates that were compiled from other sources for the survey locations (Alaska Department of Transportation 2018, Alaska Wildland Fire Coordinating Group 2020, Alaska Center for Conservation Science 2017, Porter et al. 2018, PRISM Climate Group 2018a,b). The data package also includes shapefiles showing the predicted population density of each species across BCR4 in Alaska, where predictions were developed by relating observations to covariates to estimate density and then predicting density based on values of covariates across the landscape; and shapefiles delineating hotspots for each species, where a hotspot is defined as a grid cell whose mean predicted density exceeds the means of 90% of other grid cells in BCR4.
Data for Montane-Breeding Bird Distribution and Abundance Across National Parks of Southwestern Alaska, 2004-2008
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Observation data and model covariate data from breeding bird inventory conducted during May-June 2004 and 2008 primarily in montane areas (>100 m above sea level) in Aniakchak National Monument and Preserve (Aniakchak NMP), Katmai National Park and Preserve (Katmai NPP), and Lake Clark National Park and Preserve (Lake Clark NPP) in southwestern Alaska. Observers conducted 1,021 point counts along 169 transects within 63 10-km × 10-km plots that were randomly selected and stratified by ecological subsection.
Data for Montane-Breeding Bird Distribution and Abundance Across National Parks of Southwestern Alaska, 2004-2008
공공데이터포털
Observation data and model covariate data from breeding bird inventory conducted during May-June 2004 and 2008 primarily in montane areas (>100 m above sea level) in Aniakchak National Monument and Preserve (Aniakchak NMP), Katmai National Park and Preserve (Katmai NPP), and Lake Clark National Park and Preserve (Lake Clark NPP) in southwestern Alaska. Observers conducted 1,021 point counts along 169 transects within 63 10-km × 10-km plots that were randomly selected and stratified by ecological subsection.