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After each survey, camera memory cards are downloaded and organized into folders by YEAR, SURVEY, CAMERA, BATCH, PHOTO#. Then, files are renamed to give every file in every survey and every year a unique name. Naming convention consists of: survey name, survey year, month and day, survey number, camera number, batch number, photo number. Thus, all photo names will follow the convention: STO18_1004_S1C1B1_0237.JPG which in this case = STEI Overhead in 2018, Month & Day, Survey#, Camera#, Batch#, Image#. These file names are entered into a spreadsheet along with other variables in preparation for analysis.As photos are analyzed by various observers, different subsets of photos are placed in separate folders for observers...
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In 1957, Henry (Hank) Hansen and Jim King identified important habitat for molting geese in an area now referred to as the Teshekpuk Lake Special Area (TLSA) in northern Alaska. Located within the larger National Petroleum Reserve-Alaska (NPR-AK), the importance of this habitat was reaffirmed by the Secretary of Interior in 1977 with the designation of the TLSA. In 1976, the Waterfowl Department of U.S. Fish and Wildlife Service (USFWS) Migratory Bird Management-Alaska (MBM-AK) began conducting aerial goose surveys within an area of the TLSA that they designated as the Traditional Survey Area. These surveys continued through 1978, after which there was a three-year hiatus. Surveys began again in 1982 and continued...
Categories: Data, Project; 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 multi-layer GeoPackage (“VCF_AnalysisStrata”) contains density layers that stratify spectacled eiders into low, medium, and high density classes on the Yukon-Kuskokwim Delta Coastal Zone over two time periods: 1985-1994 and 1995-2015. The (“SPEI_1985to1994_6strata”) and (“SPEI_1995to2015_6strata”) layers were created using ground-based nest data that was log-transformed, interpotated by ordinary kriging methods, and classified into low (0-1.60 km^2), medium (1.60-3.50 km^2), and high (>3.50 km^2) nest density classes. Different visibility correction factors (VCFs) were calculated for each density strata based on the relationship between the nest and aerial survey data. These correction factors are used to produce...
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This GeoPackage contains the analysis strata ("YKG_AnalysisStrata") used in calculating population indices for geese, swans, and cranes. This layer was created from the file ("YKD_DesignStrata") when the existing rotating panel design was developed in 1999. This layer was originally created as an ArcInfo coverage, saved to a shapefile, and imported to SQLite Database format.
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This is a folder and zip folder for distribution if the ACP data. Limited metadata exists at this time, thus the readme.txt file contains much of the information. The contents also include 10-02 area data that was collected in 2019. Ths is identified in the 'code' column of the ACP_QCObs_YYYY... files. The contents include: ADDITIONAL INFORMATION: OBSERVATION FILES (Data/ACP_QCObs_YYYY_Name.csv) - 2010 resulted in 3 different observers, 2018 had 1 observer, and all other years had 2 observers. - Latitude and longitude fields are of unknown accuracy and might be 500m from the reported locations due to: (1) GPS satellite accuracy, (2) distance from observed bird to center strip of transect (observer) could be up to...
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This collection of reports are summaries of annual aerial surveys of molting geeze conducted near Teshekpuk Lake beginning in 2003. Annual reports completed for surveys conducted prior to 2003 are not in digital format. To access to these, please contact Migratory Bird Management-Alaska Region Waterfowl Department (USFWS) directly. Because not all reports were completed within the same year as the corresponding aerial surveys, file naming format for each report was standardized to: [YYYY] _ [author] _ [(coauthor)] _ briefDescription. All markdown code used to produce reports starting in 2016 can be found here and is also located on the Alaska Regional Data Repository (GitHub_Annual_Report_Code folder).
Categories: Data; 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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The document reviews the theory of distance sampling, important assumptions, and case studies where distance sampling has been used. Reported in this document are results from some power analysis to guide design of a pilot study. This report became part of a Master’s thesis project and was used for development of a field protocol.
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This R code uses the nest card data (“Nest_Cards_1985_2019_QC.csv”), cumulative observer experience data (“cumnest.csv”), and the output from the detection model to produce nest population estimates for focal species or species groups. Model results used are the the maximum likelihood estimates and covariance matrix from Program Mark for “model 7” or from a Bayesian posterior distribution based on a generalized linear mixed model for detection with random effects for plot, year, and crew. Results from “model 7” are produced only to provide population estimates based on legacy methods as reported in past reports. For final estimates, results from the Bayesian posterior should be used. Result from either model cannot...
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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The Spectacled Recovery Plan identified annual nesting surveys as the primary method to assess recovery status for Alaska’s Yukon-Kuskokwim Delta (YKD) subpopulation. In addition to documenting population status for spectacled eiders, the survey provides annual information on egg production, nesting effort, phenology, and habitat use for three other focal species including cackling geese, emperor geese, and greater white-fronted geese. Numbers of nests of the four species are stable or increasing in the short-term (2007-2016) and long-term (1985-2016). In 2016, the estimated number of spectacled eider nests (9,464) was the second highest in the history of the survey, but nest success was poor and clutch size very...
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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There are four kinds of observers that will be examining photos for birds, and four separate datasheets will contain results from these observers for each survey. The first observer, ‘PRI’ = the primary observer, looks at all photos taken and records bird presence/absence. The ‘SEC’ = the secondary observer, speciates the birds found by the primary observer, and counts the Steller’s eiders. The ‘TER’ = the tertiary observer, reviews the speciation and/or counts of the secondary observer as a check. The ‘ERR’ = the error rate observer, independently records bird presence/absence in a subset (10%) of the photos that the primary observer viewed as a check on the PRI accuracy. When all are complete, they are combined...
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This is a collection of datasets that are comprised final MBM-AK TLSA molting goose aerial survey data. Using R code produced by Brad Shults (files ending in .Rmd found in ‘GitHub_Annual_Report_Code’), these data were produced from the raw survey data (‘raw_data’); some quality control was completed using this GitHub R code, though some columns of these datasets still contain errors and these data are not tidy. However, these data are used to produce figures and tables in annual reports so no further tidying or quality control was conducted for these data. Additional details can be found in entity and domain data dictionary definitions.
Categories: Data; 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 dataset was created by Heather Wilson and sent to Julian Fischer on 6/29/21 and forwarded by him to Maggie Harings on 7/1/21. Heather created this document in order to track general survey details including pilot names, observer names, aircraft types used during each survey, and survey notes for the MBM-AK TLSA molting goose surveys. This document has not been tidied and it is unclear whether is has been put through a quality control process. In addition, Heather made several attempts to track down missing information in this document for survey years 1982-1999 but was unsuccessful. Therefore, this document is incomplete and should be treated as such. For additional information regarding this document, please...
Categories: Data; 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 is the raw nest card data as transcribed from the hard copy nest cards used in the field, 1985 to 2019. No attempt has been made for quality control on these data. These data are quality control using the R code in the file ‘Nest_Cards_QC.R’ to produce the data used for population estimate in file ‘Nest_Cards_1985_2019_QC.csv’. These data should not generally be used or distributed other than when the quality control process is revised and downstream data file need to be recreated (i.e., information is needed from these raw data that is not represented in the quality control files).
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 document is a report on a project for a Masters student thesis to understand distance sampling to estimate eider and goose nest density. The abstract from the report is:The U.S. Fish and Wildlife Service currently conducts annual surveys to estimate bird nest abundanceon the Yukon-Kuskokwim Delta, Alaska. The current method involves intensive searching on large plots withthe goal of finding every nest on the plot. Distance sampling is a well-established transect-based methodto estimate density or abundance that accounts for imperfect detection of objects. It relies on estimatingthe probability of detecting an object given its distance from the transect line, or the detection function.Simulations were done using...
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The Arctic Coastal Plain Aerial Breeding Pair Survey provides data on distribution, abundance, and trend of 33 bird species that nest in northern Alaska. The survey has been conducted in its current form annually since 2007. Methods follow the standard operating procedures for the Waterfowl Breeding Population and Habitat Survey. Primary uses of the survey data are to evaluate recovery status of Spectacled Eider (Somateria fischeri) and Steller’s Eider (Polysticta stelleri), as well as monitor species of conservation concern including Lesser Snow Goose (Chen caerulescens caerulescens), Yellow-billed Loon (Gavia adamsii), Red-throated Loon (G. stellata), and Black Brant (Branta bernicla nigricans). Survey data are...
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This is the GeoPackage (“TMG_AdditionalAreas.gpkg”) that contains the layer (“main.TMG_NewAreas”) depicting the spatial extent of the four Additional Survey Areas that are assessed during the annual MBM-AK TLSA molting goose aerial surveys. This GeoPackage (NAD83; ESPG: 3338) was created by Michael Swain in August 2021 and subsequently emailed to Maggie Harings. It includes waterbody units, waterbody types, and waterbody perimeter as well as their areas.
Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: ALPINE/TUNDRA, ALPINE/TUNDRA, ALPINE/TUNDRA, ALPINE/TUNDRA, ALPINE/TUNDRA, All tags...
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This file contains the transect end points used in the 2019 distance sampling pilot. These are produced by the R code found in Rmarkdown file ‘plotCenters.Rmd’. Transect end points are written to a csv file for input in field GPS units to guide field staff during surveys. Geographic coordinates are in epsg:4269.
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The code repository for the quality controll processing, data creation, modelling, and mapping or trend estimation is at https://github.com/USFWS/ACP-Mapping. The full history of the quality control process and issues is documented in R code file in this repository. Please report any addition errors to https://github.com/USFWS/ACP-Mapping/issues and follow update of this repositiry to keep track of new errors and updates to data sets, maps, or trend estimates.
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This collection of files contains the reports that were produced when the raw data were quality-checked against the defined standards in the “Transcribed Data Dictionary” using the “GreenLight” function of the R Package “AKaerial.” The QC log files document the quality control process, data standards, and what changes (if any) were made in the QC data compared to the raw data. Each log file was named following the same file naming conventions: SSS_YYYY_QCLog_OOOO_yyyy-mm-dd, where; YKD = Duck data, YKG = Goose data or YYY=Year, OOOO = observer’s first initial and last name,yyyy-mm-dd = year, month, and day the AKaerial.R (“GreenLight”) function in was most recently executed


map background search result map search result map Alaska Arctic Coastal Plain Breeding Waterbird Aerial Survey 2007-Present Alaska Arctic Coastal Plain Waterfowl Breeding Survey Data 2007 to 2023 Observer Data Results for Overhead Steller's Eider Survey Photo Files Organization and Preservation Protocol for Steller's Eider Overhead Survey Teshekpuk Lake Molting Goose Survey Teshekpuk Lake Alaska Molting Goose Additional Survey Areas GeoPackage Teshekpuk Lake Alaska Molting Goose Final Aerial Survey Data Teshekpuk Lake Alaska Molting Goose Aerial Survey Annual Reports Teshekpuk Lake Alaska Molting Goose Observers and Aircraft data Alaska Yukon Delta Mean initiation and hatch from Egg Data 1985 - 2019 Alaska Yukon Delta Line Transect Distance Sampling to Estimate Nest Density on the Yukon-Kuskokwim Delta Alaska Yukon Delta Nest Distance Sampling Transects Alaska Yukon Delta Nest Plot Survey Raw Legacy Nest Card Data 1985 - 2019 Alaska Yukon Delta Nest Population Estimation Code Using R Alaska Yukon Delta Nest Population Size and Potential Production of Geese and Spectacled Eiders on the Yukon-Kuskokwim Delta, Alaska, 1985-2016 Simulating distance sampling to estimate nest abundance at Alaska Yukon-Kuskokwim Delta Arctic Coastal Plain Aerial Survey Github Code Repository Alaska Yukon-Kuskokwim Delta Aerial Survey VCF Analysis Strata Alaska Yukon-Kuskokwim Delta Aerial Survey Goose Analysis Strata Alaska Yukon-Kuskokwim Delta Aerial Survey Raw Data Quality Reports Observer Data Results for Overhead Steller's Eider Survey Photo Files Organization and Preservation Protocol for Steller's Eider Overhead Survey Alaska Yukon Delta Nest Distance Sampling Transects Simulating distance sampling to estimate nest abundance at Alaska Yukon-Kuskokwim Delta Teshekpuk Lake Molting Goose Survey Teshekpuk Lake Alaska Molting Goose Additional Survey Areas GeoPackage Teshekpuk Lake Alaska Molting Goose Final Aerial Survey Data Teshekpuk Lake Alaska Molting Goose Aerial Survey Annual Reports Teshekpuk Lake Alaska Molting Goose Observers and Aircraft data Alaska Yukon Delta Mean initiation and hatch from Egg Data 1985 - 2019 Alaska Yukon Delta Line Transect Distance Sampling to Estimate Nest Density on the Yukon-Kuskokwim Delta Alaska Yukon Delta Nest Plot Survey Raw Legacy Nest Card Data 1985 - 2019 Alaska Yukon Delta Nest Population Estimation Code Using R Alaska Yukon Delta Nest Population Size and Potential Production of Geese and Spectacled Eiders on the Yukon-Kuskokwim Delta, Alaska, 1985-2016 Alaska Yukon-Kuskokwim Delta Aerial Survey Goose Analysis Strata Alaska Yukon-Kuskokwim Delta Aerial Survey VCF Analysis Strata Alaska Yukon-Kuskokwim Delta Aerial Survey Raw Data Quality Reports Alaska Arctic Coastal Plain Breeding Waterbird Aerial Survey 2007-Present Alaska Arctic Coastal Plain Waterfowl Breeding Survey Data 2007 to 2023 Arctic Coastal Plain Aerial Survey Github Code Repository