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Originally created by Brad Shults, the GitHub repository was created for markdown code used to quality control survey data and create annual survey reports beginning in 2016. The repository can be found on GitHub (‘https://github.com/bsshults/Teshekpuk-Lake-Molt’). A copy of the master branch that was last committed by user “bsshults” (Brad Shults) on 2/24/20 was downloaded by Maggie Harings on 6/29/21 and stored on the Alaska Regional Data Repository (‘GitHub_Annual_Report_Code’). General file naming structure for repository files is: ‘TMGSurvey_Master_[surveyYear]’ Files ending in the file extension ‘.Rmd’ are used to conduct some quality control and data tidying for original survey data. These files contain comments...
Categories: Data, Software; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: ALPINE/TUNDRA, ANIMALS/VERTEBRATES, ARCTIC TUNDRA, BIOLOGICAL CLASSIFICATION, BIOLOGICAL RECORDS, All tags...
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This data set provides the coordinates of plot centers, the area of each plot, plot type, and search history of the plot. Plots in this data set are linked through the combination of plot number and year provided in this file. Plot search history indicates if a plot was searched for nests. Plot shape and area has varied through time. After 1985, plot were selected by stratified random sampling, and after 1998 by simple random sampling from the area defined in ‘YKD Nest Plot Study Area Boundary.’ Plot shape has also varied but after 1998 was generally 1/4 by 1/2 mile.
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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This multi-layer GeoPackage contains the YKD Coastal Zone Survey design transects from 1985 to present. The original transects were imported to this SQLite database structure and saved as individual polylines named according to the year they were created (e.g., “main.YK_1985_Trans,” “main.YK_1986_Trans,” “main.YK_1987_Trans,” etc.). The aerial transects were developed systematically from randomly-selected start points and created along constant lines of latitude. The inter-transect spacing in the low, medium, high, and very-high density strata varies so that areas with higher waterfowl density are surveyed more intensively. Though the overall study area never changed, the YKD Survey design was modified several times,...
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This R code (eggs.R) inputs the quality controlled nest card data and (1) performs additional quality control on the egg code data, (2) reformat the eggs data into a tidy file of egg observations, (3) summarizes egg data into yearly means of initiation and hatch date based on incubation model, and (4) writes csv files for tidy egg data (eggs.csv) and yearly nest stats (yearstats.csv).
Categories: Data, Software; 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 2019 a pilot study was conducted to determine the feasibility of using distance sampling to estimate density and population size of goose and eider nests on the Yukon-Kuskokwim Delta (YKD). Distance sampling (Buckland et al. 2001) is a common and well-understood method to estimate wildlife population size or density, especially for sparse and hard-to-detect populations. A main advantage of distance sampling is that it accounts for imperfect detection and gives precise estimates for a given level of effort relative to other methods. The objectives for the pilot project in 2019 was to (1) determine if distance sampling is feasible on the YKD, (2) determine what aspects of the field protocol need to be changed or...
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, AirWin.csv, contains the raw transcribed bird and marine mammal data collected during the 1997-2002 aerial winter Southeast Alaska Nearshore Waterbird Survey. Note that this dataset contains records of species that were omitted in the final, quality-controlled data (WinterSimplified.csv), due to detection issues or inappropriateness of the survey design for those species.
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We have used the software program ‘ImageJ’ to count birds in the overhead photographs taken for the STEI_Overhead survey. Following is a description of this software. Links to the ImageJ guide and specific detailed instructions for counting these photographs are linked to and include:Counting sea ducks with ImageJ.docxImageJ_user-guide_2020.pdfAs well as another quick guideSoftware description ImageJ is a Java-based image processing program developed at the NIH and LOCI. ImageJ was designed with an open architecture that provides extensibility via Java plugins and recordable macros. ImageJ can be run as an online applet, a downloadable application, or on any computer with a Java 5 or later virtual machine. The source...
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This is a table that contains all eight Aviatrix, GPS & camera data fields, including camera angle, transect number, sequence, computer time, camera time, latitude, longitude, and altitude. This table will be joined with the table that contains survey and file data and observer results to comprise the final data table that will be run through the bird analyses.
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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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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.
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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.
map background search result map search result map Alaska Swan Database 1968-2015 Southeast Alaska Nearshore Winter Air Raw Transcribed Data 1997-2002 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 Counting Birds in Photographs Protocol with ImageJ Software for Steller's Eider Overhead Survey Spatial Data for Steller's Eider Overhead Survey at Nelson Lagoon, Alaska Alaska Trumpeter Swan Survey 2010 Analysis - Abundance Estimates 2010 Alaska Trumpeter Swan Survey Data Alaska Trumpeter Swan Survey Design 2010-2015: Optimal Allocation Worksheets 1975 Alaska Trumpeter Swan Survey Data Alaska Trumpeter Swan Survey Areas 1968-2015: Geopackages 2000 Alaska Trumpeter Swan Survey Data Teshekpuk Lake Alaska Molting Goose Traditional Survey Area GeoPackage Teshekpuk Lake Alaska Molting Goose GitHub Markdown Code for Annual Survey Reports Alaska Yukon Delta Nest Distance Sampling Pilot Project Alaska Yukon Delta Plot Location, Size, and Search Historic Data 1985 - 2019 Alaska Yukon Delta Tidy Eggs data R Code Alaska Yukon-Kuskokwim Delta Aerial Survey Design Strata Alaska Yukon-Kuskokwim Delta Aerial Survey Design Transects 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 Counting Birds in Photographs Protocol with ImageJ Software for Steller's Eider Overhead Survey Spatial Data for Steller's Eider Overhead Survey at Nelson Lagoon, Alaska Alaska Yukon Delta Nest Distance Sampling Pilot Project Teshekpuk Lake Alaska Molting Goose Traditional Survey Area GeoPackage Teshekpuk Lake Alaska Molting Goose GitHub Markdown Code for Annual Survey Reports Alaska Yukon Delta Plot Location, Size, and Search Historic Data 1985 - 2019 Alaska Yukon Delta Tidy Eggs data R Code Alaska Yukon-Kuskokwim Delta Aerial Survey Design Strata Alaska Yukon-Kuskokwim Delta Aerial Survey Design Transects Southeast Alaska Nearshore Winter Air Raw Transcribed Data 1997-2002 Alaska Trumpeter Swan Survey 2010 Analysis - Abundance Estimates 2010 Alaska Trumpeter Swan Survey Data Alaska Trumpeter Swan Survey Design 2010-2015: Optimal Allocation Worksheets 1975 Alaska Trumpeter Swan Survey Data Alaska Trumpeter Swan Survey Areas 1968-2015: Geopackages 2000 Alaska Trumpeter Swan Survey Data Alaska Swan Database 1968-2015