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Folders: ROOT > ScienceBase Catalog > US Fish and Wildlife Service (USFWS) > Programs > Migratory Birds > Region 7 U.S. Fish and Wildlife Service Migratory Bird Management ( Show direct descendants )

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Observer-specific population indices for the USFWS Region Migratory Bird Management Arctic Coastal Plain study area. The survey consists of low-level aerial observations of waterfowl on a stratified strip transect design. The resulting data frame is several indices separated by observer and calculated using a standard ratio estimator. These data are output from the R package AKaerial and are also available within that package, see https://github.com/USFWS/AKaerial. The data used to produce these estimates contain known errors. Many but not all of these errors are corrected within the R package AKaerial. These data are presented for historical purposes only. See https://github.com/USFWS/ACP-Mapping and comments within...
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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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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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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.,...
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This project is an annual communicating memo explicitly designed to inform the Pacific Flyway Representative of waterfowl survey results for incorporation of the data into harvest management reports and regulatory processes. This memorandum is additionally shared widely with partners outside the USFWS. The major products are an annual reporting memo–automatically generated from an R Quarto document, and 19 species-specific comma delimited table files that appear in the memo, and the generating R (.rmd) code.
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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 from the R package AKaerial and are also available within that package, see https://github.com/USFWS/AKaerial.
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This geopackage contains the density strata that were used to create the Alaska Arctic Coastal Plain Aerial Breeding Pair Survey four-year rotating panel design. This file was derived from a mid-1980’s ArcInfo coverage for the North Slope Eider Survey that was produced through the visual interpretation of 1:250,000-scale LANDSAT imagery and the known nesting density waterfowl in the area.
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This is a zip folder of geographic line data in three formats that represent the distance sampling transects. All these were produced from the Rmarkdown code found in the file YKD-sample-frame.Rmd. All coordination reference systems are in EPSG:4326. The overall survey area is define as the YKD nest plot survey area, found under the MBM project mbm7wa_002 at https://www.sciencebase.gov/catalog/item/6452f8a7d34eefd5da83c5ff.
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This is an update for crews heading into the field. Gives some detail on the season phenology and crew assignments. Used in conjunction with the document Field_Protocol_Distance_Sampling_20220506.pdf, which describes the distance sampling protocol, and the document YDNC_2022_map_20220419.pdf, which describes crew areas within the survey area.
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This multi-layer GeoPackage contains the Alaska Arctic Coastal Plain Aerial Breeding Pair Survey design transects from 2007 to present. The original transects were created as shapefiles and imported to this SQLite database. Transects were saved as individual polylines named according to the year they were created (e.g., “main.ACP_2007_Trans,” “main.ACP_2008_Trans,” “main.ACP_2009_Trans,” etc.). These 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. The current four-year rotating...
Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: ANIMALS/VERTEBRATES, ANIMALS/VERTEBRATES, BIOLOGICAL CLASSIFICATION, BIOLOGICAL CLASSIFICATION, BIOSPHERE, All tags...
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This collection contains the quality-control (QC) transcribed data from the Arctic Coastal Plain 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. The data files in this collection were named using the following naming convention: ACP_YYYY_QCObs_OOOO, where ACP=Arctic Coastal Plain, YYYY=Year, QCObs=Quality control observations, and OOOO=observer’s first initial and last name. These data contain known errors. These data should not be used except as raw input for...
Categories: Data; Tags: ANIMALS/VERTEBRATES, ANIMALS/VERTEBRATES, ANIMALS/VERTEBRATES, BIOLOGICAL CLASSIFICATION, BIOLOGICAL CLASSIFICATION, All tags...
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The standard operating procedures (SOP) document for the overall WBPHS, including the Alaska strata, was updated by USFWS Division of Migratory Bird Management Branch of Migratory Bird Surveys on 21 April 2022. This SOP applies to all survey crews, including Alaska’s.
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This collection comprises the log files that accompany the quality-controlled (QC) WBPHS-AK transcribed bird-observation data files. The log files were produced when the original (“raw”) transcribed data were run through the QC process via the “Greenlight” script within the R package “AKaerial” (available at github.com/USFWS/AKaerial). The log files describe any changes that were made to the raw transcribed data during the QC process. There is one log file for each QC transcribed data file: WBPHS_YYYY_QCLog_OOO.html, where YYYY=Year and OOO=Observer initials.
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This is the field protocol used to instruct crews on data collection while in the field at found nests or dead birds during the 2022 distance sampling season. Used in conjunction with the document Field_Protocol_Distance_Sampling_20220506.pdf, which describes the distance sampling protocol, and the document YDNC_2022_map_20220419.pdf, which describes crew areas within the survey area.
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This is a zip folder of printed emails (pdf) and Word (.docx) files that describe data issues used to during the quality control process. See the file wrangle_2022.R and comments within for actually quality control process.
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This is an html report produced from the Rmarkdown code found in the file YKD-sample-frame.Rmd. It presents the design of the, some background and some additional analysis based on the history of the plot survey.
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This is a csv file that records the full name and initials used in the nest data to identify observers. This file is used during quality control to produce the final data set.
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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...
map background search result map search result map Alaska Arctic Coastal Plain Aerial Breeding Pair Survey Design Transect Geodata 2023 Alaska Goose, Swan, and Crane Population Indices products Alaska Arctic Coastal Plain Aerial Breeding Pair Survey Design Strata Geodata Alaska Arctic Coastal Plain Aerial Breeding Pair Survey QC Transcribed Data 2007-present Waterfowl Breeding Population and Habitat Survey Alaska-Yukon Waterfowl Breeding Population Habitat Survey Alaska Abundance Estimate data 1957 to 2021 Waterfowl Breeding Population Habitat Survey Alaska Development of Visibility Correction Factors for Reports 1985 to 1991 Waterfowl Breeding Population Habitat Survey Alaska Quality Control Log Files 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 Waterfowl Breeding Population Habitat Survey Standard Operating Protocol Update 04-21-2022 Alaska Arctic Coastal Plain Aerial Survey Expanded Index Estimates 2007-present Alaska Yukon-Kuskokwim Delta Nesting Waterfowl Distance Sampling Survey 2022 Observer Initials Alaska Yukon-Kuskokwim Delta Nesting Waterfowl Distance Sampling Survey 2022 Data Notes Alaska Yukon-Kuskokwim Delta Nesting Waterfowl Distance Sampling Survey 2022 Crew Update Alaska Yukon-Kuskokwim Delta Nesting Waterfowl Distance Sampling Survey 2022 Crew Map Alaska Yukon-Kuskokwim Delta Nesting Waterfowl Distance Sampling Survey 2022 Data Collection Instructions Alaska Yukon-Kuskokwim Delta Nesting Waterfowl Distance Sampling Survey 2022 Sample Design GeoData Alaska Yukon-Kuskokwim Delta Nesting Waterfowl Distance Sampling Survey 2022 Sample Design Report Alaska Yukon-Kuskokwim Delta Nesting Waterfowl Distance Sampling Survey 2022 Observer Initials Alaska Yukon-Kuskokwim Delta Nesting Waterfowl Distance Sampling Survey 2022 Data Notes Alaska Yukon-Kuskokwim Delta Nesting Waterfowl Distance Sampling Survey 2022 Crew Update Alaska Yukon-Kuskokwim Delta Nesting Waterfowl Distance Sampling Survey 2022 Crew Map Alaska Yukon-Kuskokwim Delta Nesting Waterfowl Distance Sampling Survey 2022 Data Collection Instructions Alaska Yukon-Kuskokwim Delta Nesting Waterfowl Distance Sampling Survey 2022 Sample Design GeoData Alaska Yukon-Kuskokwim Delta Nesting Waterfowl Distance Sampling Survey 2022 Sample Design Report Alaska Arctic Coastal Plain Aerial Breeding Pair Survey Design Transect Geodata Alaska Arctic Coastal Plain Aerial Survey Expanded Index Estimates 2007-present Alaska Arctic Coastal Plain Aerial Breeding Pair Survey Design Strata Geodata Alaska Arctic Coastal Plain Aerial Breeding Pair Survey QC Transcribed Data 2007-present Waterfowl Breeding Population and Habitat Survey Alaska-Yukon Waterfowl Breeding Population Habitat Survey Alaska Abundance Estimate data 1957 to 2021 Waterfowl Breeding Population Habitat Survey Alaska Development of Visibility Correction Factors for Reports 1985 to 1991 Waterfowl Breeding Population Habitat Survey Alaska Quality Control Log Files 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 Waterfowl Breeding Population Habitat Survey Standard Operating Protocol Update 04-21-2022 2023 Alaska Goose, Swan, and Crane Population Indices products