This dataset includes a polygon vector shapefile that provides information pertaining to the sampling universe (i.e., the potential sampling units within the study area) from which rapid surveys were selected. Plots containing >60% clear and turbid water, >60% mudflat/sandbar, >50% unsuitable vegetated habitats (i.e., forested, tall shrub, and alpine dwarf shrub), >5% unsuitable non-vegetated habitats (i.e., rock gravel, urban, snow/ice, burn, streams), or >5% image obstruction (e.g., cloud, terrain shadow) were excluded. Information for each potential sampling unit includes location, percentage of habitat classifications (obtained from Ducks Unlimited, Inc. 2011. Yukon Delta National Wildlife Refuge Earth Cover Classification User’s Guide. Ducks Unlimited, Inc., Western Regional Office, Rancho Cordova, CA, USA), ownership, and stratum.
A portion of these data are available on ServCat (https://ecos.fws.gov/ServCat/Reference/Profile/57583).
Much of these data have been published in Lyons, J.E., S.C. Brown, S.T. Saalfeld, J.A. Johnson, B.A. Andres, K.M. Sowl, R.E. Gill, Jr., B.J. McCaffery, L.R. Kidd, M. McGarvey, B. Winn, H.R. Gates, D.A. Granfors, and R.B. Lanctot. In press. Global importance of the Yukon-Kuskokwim Delta, Alaska, to breeding shorebirds. Ornithological Applications.
The data providers have invested considerable effort in QA/QC, but it is possible that undetected errors remain. It is strongly recommended that careful attention be paid to the contents of the metadata file associated with these data to evaluate data set limitations, restrictions or intended use. The originators of this dataset shall not be held liable for improper or incorrect use of the data described and/or contained herein.
Potential users of these data should first contact the data authors listed below, as potential biases may occur within the data depending on the intended use. Therefore, potential users should contact the data authors to discuss intended use and how these data may or may not be applicable.
see 1) Saalfeld, S. T., H. R. Gates, S. C. Brown, K. M. Sowl, B. A. Andres, J. A. Johnson, J. E. Lyons, B. J. McCaffery, and R. B. Lanctot. 2022. Survey Protocol for the Arctic Program for Regional and International Shorebird Monitoring (PRISM). Version 1.0. U.S. Fish and Wildlife Service, Division of Migratory Bird Management, Anchorage, AK, 2) Saalfeld, S. T., H. R. Gates, S. C. Brown, K. M. Sowl, B. A. Andres, J. A. Johnson, J. E. Lyons, B. J. McCaffery, and R. B. Lanctot. 2022. Program for Regional and International Shorebird Monitoring (PRISM) – Yukon Delta National Wildlife Refuge Surveys (2015–2016), Version 1.0. U.S. Fish and Wildlife Service, Division of Migratory Bird Management, Anchorage, AK, and 3) annual field protocols for specific methodologies.
