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Filters: Types: OGC WMS Service (X) > partyWithName: Debbie Groves (X) > partyWithName: Julian Fischer (X)

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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 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 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 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....
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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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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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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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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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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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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.
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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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Estimates_By_Year_2010to2015.csv summarizes the Alaska Trumpeter Swan Survey abundance estimates by survey year, 2010 and 2015. Estimates are rounded to the nearest integer.
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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. USGS_Map_Index.tif is a map version of the USGS map index, saved in an image format (.tif).
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2010_Analysis_Trends.xlsx is an Excel file created by MBM-AK to analyze data from the 1968-2010 Alaska Trumpeter Swan Surveys to assess trends in the numbers of adult (i.e., white) swans, total swans (i.e., adults and cygnets), and broods, and the percentage of cygnets in the total swan population.
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This dataset, BoatWin.csv, contains the bird and marine mammal data that was collected during boat-based surveys in the winters of 2000-2002 to double-sample portions of the aerial winter Southeast Alaska Nearshore Waterbird Survey.
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This dataset contains the swan data recorded during the 1985 Alaska Trumpeter Swan Survey. The 1985 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 2015 Alaska Trumpeter Swan Survey. The 2015 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 1980 Alaska Trumpeter Swan Survey. The 1980 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 1990 Alaska Trumpeter Swan Survey. The 1990 survey was designed to census the entire Alaska trumpeter swan summering range.
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 Winter Boat Data 2000-2002 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 1985 Alaska Trumpeter Swan Survey Data 1968 Alaska Trumpeter Swan Survey Data Alaska Trumpeter Swan Survey 2015 Analysis - Compare 2010 & 2015 2015 Alaska Trumpeter Swan Survey Data 1980 Alaska Trumpeter Swan Survey Data Alaska Trumpeter Swan Survey 2015 Analysis - Abundance Estimates Alaska Trumpeter Swan Survey Areas 1968-2015: CSV Tables Alaska Trumpeter Swan Survey Estimates by Year 2010-2015 Alaska Trumpeter Swan Survey Protocol 2007 Alaska Trumpeter Swan Survey 2010 Analysis - Trends Alaska Trumpeter Swan Survey Map Codes USGS_Map_Index.tif for Alaska Trumpeter Swan Survey 1990 Alaska Trumpeter Swan Survey Data Southeast Alaska Nearshore Summer Boat Data 1997-2002 Southeast Alaska Nearshore Summer Air Raw Transcribed Data 1997-2002 Southeast Alaska Nearshore Winter Boat Data 2000-2002 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 1985 Alaska Trumpeter Swan Survey Data 1968 Alaska Trumpeter Swan Survey Data Alaska Trumpeter Swan Survey 2015 Analysis - Compare 2010 & 2015 2015 Alaska Trumpeter Swan Survey Data 1980 Alaska Trumpeter Swan Survey Data Alaska Trumpeter Swan Survey 2015 Analysis - Abundance Estimates Alaska Trumpeter Swan Survey Areas 1968-2015: CSV Tables Alaska Trumpeter Swan Survey Estimates by Year 2010-2015 Alaska Trumpeter Swan Survey Protocol 2007 Alaska Trumpeter Swan Survey 2010 Analysis - Trends Alaska Trumpeter Swan Survey Map Codes 1990 Alaska Trumpeter Swan Survey Data USGS_Map_Index.tif for Alaska Trumpeter Swan Survey