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Predators are a known detriment to beach nesting birds at Cape May National Wildlife Refuge. Although the refuge regularly contracts with USDA to provide 2 weeks of predator trapping, predators historically move onto the refuge throughout a breeding season and detrimentally affect the beach nesting birds when contract work has already been spent or USDA is unavailable to get out to specific sites. In recent years, this has resulted in low productivity. Funding is requested to implement more adaptive predation management efforts through either increased trapping duration, and/or to purchase trapping and control supplies for refuge staff, and to purchase supplies to trap and control ghost crabs.
Moose are vitally important to Alaska’s subsistence and recreational hunters, wildlife viewers, and economy. Both the State of Alaska and federal government are mandated to manage moose populations. Specific information needs vary across the state, but the ability to monitor the size, trend, and composition of moose populations is fundamental to sound scientific management. Moose population monitoring (including measures of abundance, composition, and trend) in Alaska routinely involve aerial surveys flown in the fall and early winter, prior to antler drop, when sexes can be distinguished. These surveys rely on complete snow cover to optimize sightability. Over the past decade, delayed onset of snowfall has crippled...
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This is the YKD egg observation data summarized into yearly stats on mean initiation and hatch dates for various species. This file is produced from the R code eggs.R.
NatureServe update of Nature’s Network’s Imperiled Species Cores using new Map of Biodiversity Importance (MoBI) modeling methodology. For more information on MoBI visit https://www.natureserve.org/map-biodiversity-importance.
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This product contains the transcribed count data from the Alaska Izembek Winter Brant Survey. These data were produced from transcribed georeferenced voice recordings using customized software developed by John Hodges (Program Record, Program Transcribe).
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Between September and November each year, nearly the entire world population of Pacific black brant (Branta bernicla nigricans) stages at Izembek Lagoon and surrounding estuaries (hereafter: Izembek Complex). The Izembek Complex is a unique area of protected brackish waters, supporting one of the world’s largest eelgrass beds and a diverse array of wildlife. The Alaska Fall Brant Survey has been conducted annually since 1976 in late-September through October, to provide an index of abundance for the entire post-breeding Pacific black brant population (Branta bernicla nigricans), while secondarily, providing annual fall population indices for cackling geese (Branta hutchinsii), emperor geese (Anser canagicus), and...
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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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This is the GeoPackage (“TMG_AdditionalArea_Trans.gpkg”) that contains the layer (“main.TMG_Area_Trans”) depicting the spatial extent of the four Additional Survey Area transects that are surveyed 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.Transects do not exist for Cape Simpson as this area is adequately assessed by conducting aerial surveys for lakes only. Piasuk River Delta area is surveyed using a combination of aerial lake surveys and transects. Colville River Delta and Atigaru...
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 quality controlled YKD salinity data for fixed and random plots 2006 - 2019. These data are quality controlled using the R code in the file ‘YKDsalinity_QC.R’ to produce the data used for analysis and sharing (‘YKDsalinity_QC.R’). These data should be what is used for analysis or distributed on request.
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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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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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Annual summary reports of Red Knot breeding ecology studies on the Seward Peninsula since 2011.
map background search result map search result map Mean initiation and hatch from Egg Data 1985 - 2019 Alaska Yukon Delta Pond Salinity Data 2006 - 2019 Alaska Izembek Brant Winter Aerial Survey Raw Observations 2012-Present Alaska Izembek Fall Brant Aerial Survey 1976-Present Southeast Alaska Nearshore Winter Boat Tracks 2000 and 2002 Alaska Trumpeter Swan Survey 1986-2015 Alaska Trumpeter Swan Survey Protocol 2007 Teshekpuk Lake Alaska Molting Goose Additional Survey Area Transects GeoPackage Alaska Arctic Coastal Plain Aerial Survey Expanded Index Estimates 2007-present Alaska Yukon Delta Nest Plot Distance Sampling Field Protocol Alaska Yukon-Kuskokwim Delta Aerial Survey Raw Transcribed Data Alaska Red Knot Breeding Ecology Reports 2011-Present Alaska Boreal Chickadee Banding Data 2022-Present Alaska Izembek Fall Brant Aerial Survey 1976-Present Alaska Izembek Brant Winter Aerial Survey Raw Observations 2012-Present Alaska Yukon Delta Pond Salinity Data 2006 - 2019 Teshekpuk Lake Alaska Molting Goose Additional Survey Area Transects GeoPackage Alaska Red Knot Breeding Ecology Reports 2011-Present Mean initiation and hatch from Egg Data 1985 - 2019 Alaska Yukon Delta Nest Plot Distance Sampling Field Protocol Alaska Yukon-Kuskokwim Delta Aerial Survey Raw Transcribed Data Alaska Arctic Coastal Plain Aerial Survey Expanded Index Estimates 2007-present Southeast Alaska Nearshore Winter Boat Tracks 2000 and 2002 Alaska Boreal Chickadee Banding Data 2022-Present Alaska Trumpeter Swan Survey 1986-2015 Alaska Trumpeter Swan Survey Protocol 2007