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This dataset contains the swan data recorded during the 2010 Alaska Trumpeter Swan Survey. The 2010 survey was a stratified random-sample plot design with optimal allocation of sampling effort to minimize cost for a fixed variance.
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This dataset contains the swan data recorded during the 1975 Alaska Trumpeter Swan Survey. The 1975 survey was designed to census the entire Alaska trumpeter swan summering range.
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This dataset contains the swan data recorded during the 2000 Alaska Trumpeter Swan Survey. The 2000 survey was designed to census the entire Alaska trumpeter swan summering range.
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This collection of 10 separate geopackages contains the survey areas of the 1968-2015 Alaska Trumpeter Swan Surveys. The geopackages are named YYYY_AK_TRUS_Survey_Area.gpkg, where YYYY = survey year. Each year’s survey area consisted of a set of U.S. Geological Survey 1:63,360 scale quadrangle maps, where each map represented a potential sampling unit. The 1968-2005 surveys were designed to census the entire survey area, and thus all of the maps were surveyed in these years. The 2010 and 2015 surveys were stratified random samples (optimally allocated to minimize cost for a fixed variance); therefore, only a selected set of 100 maps were surveyed in these years. (Additional geopackages are available in the survey’s...
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In many areas surveyed during the North American WBPHS, ground surveys are conducted in conjunction with the aerial surveys to derive annual visibility correction factors (VCFs) for the aerial survey crews, which are used during analyses to adjust for detection bias. Due to the remoteness of strata 1–12, ground surveys are not conducted there. Instead, a set of fixed VCFs by species and basic habitat type (strata 1–7 = boreal forest; strata 8–11 = tundra; stratum 12) are used. The fixed VCFs that were used through 1991 were derived from work done in WBPHS prairie strata. During the years 1985–1991, efforts were made by the FWS Division of Migratory Bird Management-Alaska Region (MBM-Alaska) to develop more appropriate...
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This geopackage contains the density strata that were used to create the YKD Coastal Zone Survey’s current four-year rotating panel design. This file was derived from a mid-1980’s ArcInfo coverage, ‘Sampling Intensity’ (“SI arc”) that was produced through the visual interpretation of 1:250,000-scale LANDSAT imagery and the nesting density of cackling Canada geese.
This file crosswalks each species in the raw transcribed data to a common name, scientific name, four-letter American Ornithological Union (AOU) species code, and provides species-specific decision logic for the analysis of Arctic Coastal Plain, Black Scoter, Copper River, and Yukon-Kuskokwim Delta aerial survey data.
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This collection comprises the annual reports, produced by MBM-Alaska, which summarize the WBPHS_AK survey data, including estimates of population abundance and trend by species. The collection contains one report file per year: WBPHS_AK-YT_Report_YYYY.pdf, where YYYY = Year.
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The WBPHS_AK bird observation data are archived as two separate datasets: 1) the raw data as originally transcribed by survey observers; and 2) the data as edited via a quality-control (QC) process. Among other things, the QC process removed records of certain non-waterfowl species, and it changed some species codes to meet the MBM-Alaska Waterfowl Program’s standardized format for transect waterfowl surveys. The QC dataset is that which MBM-Alaska uses for analyses and is considered the most appropriate for sharing with other users. This collection of files comprises the raw transcribed WBPHS_AK bird-observation data. There is one file for each year and observer: WBPHS_YYYY_RawObs_OOO.csv, where YYYY=Year and OOO=Observer...
Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: ANIMALS/VERTEBRATES, ANIMALS/VERTEBRATES, ANIMALS/VERTEBRATES, ANIMALS/VERTEBRATES, ANIMALS/VERTEBRATES, All tags...
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Starting in 1999, WBPHS_AK surveyors used the custom survey software RECORD (John I. Hodges, FWS-MBM-Alaska, retired) to record bird data and capture the survey flight track. Each observer had their own computer and obtained their own separate flight track each day. The track was recorded by capturing a GPS location every 5 seconds as long as the survey software was running. The software was started at some time between the aircraft’s engine start and the first transect, and was shut down at some time between the last transect and engine shut-down. The track thus includes the aircraft’s flight to and from transects as well as along the transects themselves. This collection comprises the track files from 1999 to...
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This collection comprises the memoranda that have been produced annually since 2012 by MBM-Alaska for the Pacific Flyway to report abundance indices of lesser Canada geese, Taverner’s cackling geese, Western Population tundra swans, and trumpeter swans. The abundance indices of lesser Canada Geese and trumpeter swans were derived solely from WBPHS_AK data. Indices of Western Population tundra swans were derived from data collected during two MBM-AK surveys: WBPHS_AK and the Yukon-Kuskokwim Delta Coastal Zone Survey. Taverner’s cackling goose indices were derived from three MBM-AK surveys: WBPHS_AK, the Yukon-Kuskokwim Delta Coastal Zone Survey, and the Arctic Coastal Plain Survey. For further information on these...
Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: ANIMALS/VERTEBRATES, ANIMALS/VERTEBRATES, ANIMALS/VERTEBRATES, ANIMALS/VERTEBRATES, ANIMALS/VERTEBRATES, All tags...
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In the 1960s, US Fish and Wildlife Service (USFWS) Alaska Region Migratory Bird Management (MBM-AK) developed a protocol for aerial Trumpeter Swan (Cygnus buccinator) and Tundra Swan (C. columbianus) abundance surveys in Alaska that was used by several government agencies and private entities through 2015. This standardized survey protocol allowed data collected by these diverse organizations to be stored together in a common digital archival system called the Alaska Swan Database, which is maintained by MBM-AK. Contributions to the database ranged from relatively small, localized surveys to the statewide quinquennial Alaska Trumpeter Swan Survey. Survey timing was either the spring nesting period or late summer...
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These are the geospatial files used to construct the transects (the survey polygon) and the transect files themselves, created and exported using AeroScientific software. These files include:Survey area polygon (.xml file created from an ArcGIS mxd), survey transects (.xml and .fpl files), both created in AeroScientific’s FlightPlanner software as described in record 2.
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Currently, the Aviatrix software produces data that is recorded and associated with each trigger point, but does not connect data from the camera (i.e., camera name) to these records. In order to calculate area for each photo that contains STEI, we would like to know the altitude of that photo. Therefore, we need to combine the Aviatrix data for each trigger point to the photo name that was taken at that trigger point. Spatial data collected by the GPS in the Aviatrix triggerbox along with camera and computer clock data is assembled to align spatial data (altitude and position data) with the imagery, mainly in order to assign the correct altitude to the images to calculate ground area within the photo frame.To do...
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All of the individual observer datasheets (‘PRI’, ‘SEC’, ‘TER’ and ‘ERR’, products described elsewhere in this document) and the camera and spatial data (also described in this document) are combined into this final data table that will be used for analysis.
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2010_TRUS_Optimal_Allocation.xls and 2015_TRUS_Optimal_Allocation.xlsx are Excel files that were created and used by MBM-AK to to determine the survey area stratification and sample selection for the 2010 and 2015 Alaska Trumpeter Swan Surveys. The 2010 and 2015 surveys were a stratified random-sample plot design with optimal allocation of sampling effort to minimize cost for a fixed variance. Note: The Excel files contain multiple worksheets, with each worksheet being a step in the process that progressed from the left-most worksheet towards the right.
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This dataset contains the swan data recorded during the 1995 Alaska Trumpeter Swan Survey. The 1995 survey was designed to census the entire Alaska trumpeter swan summering range.
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This collection of two .csv tables contains the sample maps (i.e., sampling units) that were surveyed during the 2010 and 2015 Alaska Trumpeter Swan Surveys. The tables are named YYYY_Sample_Maps.csv, where YYYY = survey year. The sample maps are U.S. Geological Survey 1:63,360 scale quadrangle maps.
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Estimates_By_Year_1968to2005.csv summarizes the Alaska Trumpeter Swan Survey abundance estimates by survey year, 1968 through 2005. (Note: 2010 and 2015 estimates are summarized separately due to their different survey designs.)
map background search result map search result map Alaska Swan Database 1968-2015 Survey Design Files for Steller's Eider Overhead Survey at Nelson Lagoon, Alaska Combining Aviatrix with Photo Data for Steller's Eider Overhead Survey Combine Data for Overhead Steller's Eider Survey of Nelson Lagoon, Alaska 2010 Alaska Trumpeter Swan Survey Data Alaska Trumpeter Swan Sample Maps 2010-2015: CSV Tables Alaska Trumpeter Swan Survey Design 2010-2015: Optimal Allocation Worksheets 1995 Alaska Trumpeter Swan Survey Data 1975 Alaska Trumpeter Swan Survey Data Alaska Trumpeter Swan Survey Areas 1968-2015: Geopackages Alaska Trumpeter Swan Survey Estimates by Year 1968-2005 2000 Alaska Trumpeter Swan Survey Data Teshekpuk Lake Alaska Molting Goose Traditional Survey Area GeoPackage Waterfowl Breeding Population and Habitat Survey Alaska-Yukon Memos To Pacific Flyway Council Waterfowl Breeding Population Habitat Survey Alaska Annual Survey Reports Waterfowl Breeding Population Habitat Survey Alaska Development of Visibility Correction Factors for Reports 1985 to 1991 Waterfowl Breeding Population Habitat Survey Alaska Raw Transcribed Data Waterfowl Breeding Population Habitat Survey Alaska Survey Flight Track Files Alaska Yukon-Kuskokwim Delta Aerial Survey Design Strata Survey Design Files for Steller's Eider Overhead Survey at Nelson Lagoon, Alaska Combining Aviatrix with Photo Data for Steller's Eider Overhead Survey Combine Data for Overhead Steller's Eider Survey of Nelson Lagoon, Alaska Teshekpuk Lake Alaska Molting Goose Traditional Survey Area GeoPackage Alaska Yukon-Kuskokwim Delta Aerial Survey Design Strata Waterfowl Breeding Population and Habitat Survey Alaska-Yukon Memos To Pacific Flyway Council Waterfowl Breeding Population Habitat Survey Alaska Annual Survey Reports Waterfowl Breeding Population Habitat Survey Alaska Development of Visibility Correction Factors for Reports 1985 to 1991 Waterfowl Breeding Population Habitat Survey Alaska Raw Transcribed Data Waterfowl Breeding Population Habitat Survey Alaska Survey Flight Track Files 2010 Alaska Trumpeter Swan Survey Data Alaska Trumpeter Swan Sample Maps 2010-2015: CSV Tables Alaska Trumpeter Swan Survey Design 2010-2015: Optimal Allocation Worksheets 1995 Alaska Trumpeter Swan Survey Data 1975 Alaska Trumpeter Swan Survey Data Alaska Trumpeter Swan Survey Areas 1968-2015: Geopackages Alaska Trumpeter Swan Survey Estimates by Year 1968-2005 2000 Alaska Trumpeter Swan Survey Data Alaska Swan Database 1968-2015