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The daily boat tracks of the 2000-2002 winter skiff-based double-sampling surveys were recorded to an onboard computer using the custom survey software RECORD (John I. Hodges, FWS-MBM-Alaska, retired). The tracks were recorded by capturing the skiff’s location from a GPS every five seconds as long as the software was running. The software was started at some time between the boat’s engine start and the start of the survey, and was shut down at some time between the end of the survey and engine shut-down. The tracks may thus include the boat’s travel to and from the home base. Note that the 2001 boat tracks are missing.
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The Alaska Swan Survey Protocol was first produced by MBM-AK sometime in the 1980s to describe a standardized method of conducting aerial swan surveys in Alaska. It was last updated in 2007. The protocol was not exclusive to the statewide Alaska Trumpeter Swan Surveys described in these metadata; however, it did generally describe these surveys’ flying technique and data collection methods.
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The Alaska Trumpeter Swan Survey was an aerial survey conducted by the U.S. Fish and Wildlife Service, Division of Migratory Bird Management, Alaska Region (MBM-AK) and partners to monitor the status of trumpeter swans (Cygnus buccinator) in Alaska. It was first conducted in 1968 and then repeated at five-year intervals from 1975 through 2015. The objectives of the survey were to estimate the abundance, distribution (1968–2005 only), and productivity of trumpeter swans in late summer, when the swans were dispersed on breeding territories and cygnets were large enough to be easily counted from the air. Estimates were obtained for the abundance of white swans (swans >1 year old), cygnets, and total swans, as well...
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The WBPHS is conducted by flying an aircraft along a set of segment lines. (One or more contiguous segments comprise a transect.) The geographic coordinates in WBPHS_Segment_Endpoints.csv represent the beginning and ending points of the segment lines in Alaska and Old Crow Flats (Yukon Territory) strata 1-12. The point coordinates in this file have been incorporated into various products (e.g., a GPS waypoints file) to aid in survey-flight navigation. The coordinates are in decimal degrees, WGS84 datum.The set of segments contained in this file was established in 1964. In the years 1957-1963, the survey design included many, but not all, of these segments. Additional segments were flown in some or all years during...
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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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WBPHS_Stratum_Areas.csv is a table that lists the area measurements (in square miles) for strata 1-12, as measured and adopted by survey designers in 1974. These measurements are used by MBM-AK in analyses to produce bird abundance estimates by species and stratum.
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This collection contains the original “raw” survey data that were recorded and transcribed by each observer during the Yukon-Kuskokwim Delta (YKD) Aerial Breeding Pair Survey. Left-front and right-front seat observers recorded data on geese, swans, and cranes since 1985, while data on eiders, ducks, and waterbirds was recorded by a right-rear seat observer since 1989. These raw transcribed data should be used to produce updated quality-control (QC) datasets by running the quality assurance/quality control script “AKaerial.R” whenever the quality control procedures are revised or modified. The data files in this collection were named using the following naming convention: YKD(YKG)YYYY_RawObs_OOOO, where YKD=Duck...
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The Alaska Trumpeter Swan Survey used U.S. Geological Survey (USGS) 1:63,360 scale quadrangle maps as sampling units (plots). USGS identifies each 1:63,360 map with a combination of two identifiers: 1) the 1:250,000 quadrangle in which it occurs, and 2) the 1:63,360 quadrangle map itself. Similarly, in the swan survey files, the 1:63,360 map is identified by the combination of the “Map” and “Quad” fields. The Map field identifies the 1:250,000 quad by its USGS numeric code; the Quad field identifies the 1:63.360 map by its appropriate letter-number. The USGS numeric 1:250,000 map codes also have associated USGS text labels (names). Map_Codes.csv defines the map names that are associated with the USGS numeric codes....
The Waterfowl Breeding Population & Habitat Survey (WBPHS) has been conducted annually since 1955 (1957 in Alaska) by the U.S. Fish and Wildlife Service (FWS) and Canadian Wildlife Service to estimate the spring abundance of targeted waterfowl species in their principal breeding areas of North America. The survey results are used to establish annual hunting regulations in the United States and Canada, monitor population trends, and inform various conservation and management decisions at the state, flyway, and continental levels.The Waterfowl Program in the FWS Division of Migratory Bird Management-Alaska Region (MBM-Alaska) is responsible for surveying strata 1–12 of the WBPHS during May to June of each year (i.e.,...
Categories: Data, Project; 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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The Yukon-Kuskokwim Delta (YKD) Aerial Breeding Pair Survey provides data on the spring abundance of targeted waterfowl species nesting on the YKD coastal zone in western Alaska. This region supports millions of waterbirds that comprise one of the largest and most important waterfowl breeding grounds in North America, including species of concern such as the red-throated loon (Gavia stellata), emperor goose (Chen canagica), Pacific black brant (Branta bernicla nigricans), common eider (Somateria mollissima), black scoter (Melanitta nigra), long-tailed duck (Clangula hyemalis), and the threatened spectacled eider (Somateria fischeri). The YKD goose, swan, and crane survey was first implemented in 1985 to monitor...
Categories: Data, Project; 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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This dataset contains the swan data recorded during the 1968 Alaska Trumpeter Swan Survey. The 1968 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 2005 Alaska Trumpeter Swan Survey. The 2005 survey was designed to census the entire Alaska trumpeter swan summering range.
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These .csv tables, YYYY_Survey_Area.csv (where YYYY = survey year), list the U.S. Geological Survey 1:63,360 scale quadrangle maps that comprised the survey areas of the 1968-2015 Alaska Trumpeter Swan Surveys. Each year’s survey area consisted of a set of the 1:63,360 scale 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. (Note: additional .csv tables are available in the survey’s project archive...
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2015_Analysis_Compare2010&2015.xlsx is an Excel file created by MBM-AK to test statistical differences between the 2010 and 2015 Alaska Trumpeter Swan Survey results.
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EstimatesTableWBPHS_20220125.csv is a table of bird abundance estimates by year and species, 1957-2021. It was produced by MBM-AK using AKaerial R code and the WBPHS_AK QC transcribed dataset. The date in the file name (format = YYYYMODA, where YYYY = year, MO = month, and DA = day) represents the date that the R code was run to produce the table. A data dictionary and details on analysis methods are provided at NEED TO ADD REFERENCE TO CHUCK’S R CODE/GITHUB WITH LINK.
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This collection contains the quality-control (QC) transcribed data from the Yukon-Kuskokwim Delta Aerial Breeding Pair Survey. These QC data were produced from the “raw” data using the R Package “AKaerial.” The raw data were evaluated against the current data standards in the ‘AKaerial data dictionary’ and saved to new QC data files with associated log files that document any changes that were made. From 1985 to 1997, observers recorded bird observations out to 200 meters from the aircraft using continuously running tape players (with a locational accuracy of +/- 5 km), while an automated voice recording survey program (with a spatial accuracy of +/- 0.5 km) was used to record data from 1998 to present. The data...
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This dataset, BoatSum.csv, contains the bird and marine mammal data that was collected during boat-based surveys in the summers of 1997-2001 to double-sample portions of the aerial summer Southeast Alaska Nearshore Waterbird Survey.
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The daily flight tracks of the 1997-2002 aerial summer Southeast Alaska Nearshore Waterbird Survey were recorded to an onboard computer using the custom survey software RECORD (John I. Hodges, FWS-MBM-Alaska, retired). The tracks were recorded by capturing the plane’s location from a GPS every five seconds as long as the software was running. The software was started at some time between the aircraft’s engine start and the start of the survey, and was shut down at some time between the end of the survey and engine shut-down. The tracks thus include the aircraft’s flight to and from the airport base. The 29 track files are named TRMMDDYY_AIR.csv, where MM = month, DD = day, and YY = year.
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This dataset, AirSum.csv, contains the raw transcribed bird and marine mammal data collected during the 1997-2002 aerial summer Southeast Alaska Nearshore Waterbird Survey. Note that this dataset contains records of species that were omitted in the final, quality-controlled data (SummerSimplified.csv), due to detection issues or inappropriateness of the survey design for those species.
map background search result map search result map Southeast Alaska Nearshore Summer Boat Data 1997-2002 Southeast Alaska Nearshore Summer Air Raw Transcribed Data 1997-2002 Southeast Alaska Nearshore Summer Flight Tracks 1997-2002 Southeast Alaska Nearshore Winter Boat Tracks 2000 and 2002 Alaska Trumpeter Swan Survey 1986-2015 2005 Alaska Trumpeter Swan Survey Data 1968 Alaska Trumpeter Swan Survey Data Alaska Trumpeter Swan Survey 2015 Analysis - Compare 2010 & 2015 Alaska Trumpeter Swan Survey 2015 Analysis - Abundance Estimates Alaska Trumpeter Swan Survey Areas 1968-2015: CSV Tables Alaska Trumpeter Swan Survey Protocol 2007 Alaska Trumpeter Swan Survey Map Codes Waterfowl Breeding Population and Habitat Survey Alaska-Yukon Waterfowl Breeding Population Habitat Survey Alaska Abundance Estimate data Waterfowl Breeding Population Habitat Survey Alaska Segment Endpoints Waterfowl Breeding Population Habitat Survey Alaska Species Visibility Correction Factors data Waterfowl Breeding Population Habitat Survey Alaska Stratum Areas data Alaska Yukon-Kuskokwim Delta Aerial Breeding Pair Survey Alaska Yukon-Kuskokwim Delta Aerial Survey Raw Transcribed Data Alaska Yukon-Kuskokwim Delta Aerial Survey QC Transcribed Data Alaska Yukon-Kuskokwim Delta Aerial Breeding Pair Survey Alaska Yukon-Kuskokwim Delta Aerial Survey Raw Transcribed Data Alaska Yukon-Kuskokwim Delta Aerial Survey QC Transcribed Data Southeast Alaska Nearshore Summer Boat Data 1997-2002 Southeast Alaska Nearshore Summer Air Raw Transcribed Data 1997-2002 Southeast Alaska Nearshore Summer Flight Tracks 1997-2002 Southeast Alaska Nearshore Winter Boat Tracks 2000 and 2002 Waterfowl Breeding Population and Habitat Survey Alaska-Yukon Waterfowl Breeding Population Habitat Survey Alaska Abundance Estimate data Waterfowl Breeding Population Habitat Survey Alaska Segment Endpoints Waterfowl Breeding Population Habitat Survey Alaska Species Visibility Correction Factors data Waterfowl Breeding Population Habitat Survey Alaska Stratum Areas data Alaska Trumpeter Swan Survey 1986-2015 2005 Alaska Trumpeter Swan Survey Data 1968 Alaska Trumpeter Swan Survey Data Alaska Trumpeter Swan Survey 2015 Analysis - Compare 2010 & 2015 Alaska Trumpeter Swan Survey 2015 Analysis - Abundance Estimates Alaska Trumpeter Swan Survey Areas 1968-2015: CSV Tables Alaska Trumpeter Swan Survey Protocol 2007 Alaska Trumpeter Swan Survey Map Codes