Uher-Koch, Brian D. (ORCID: 0000-0002-1885-0260) 20190904 tabular digital data Anchorage, AK U.S. Geological Survey Suggested citation: Uher-Koch, B.D., 2019, Aerial imagery captured at nesting Pacific black brant (Branta bernicla nigricans) colonies on the Yukon-Kuskokwim Delta, Alaska, 1993-2016: U.S. Geological Survey Data Release, https://doi.org/10.5066/P9CJ2YZQ https://doi.org/10.5066/P9CJ2YZQ This data set contains one table of the habitat classifications from imagery captured during aerial photographic surveys at the five primary Pacific black brant colonies on the Yukon-Kuskokwim Delta in western Alaska from 1993-2016. Aerial images are available upon request by contacting gs-ak_asc_datamanagers@usgs.gov. These data were used to quantify changes in grazing lawn abundance (Carex subspathacea) over time and identify the possible factors impacting those changes. 199306 201606 ground condition Complete None planned Study areas are composed of the five primary black brant colonies on the Yukon-Kuskokwim Delta, Alaska. These colonies include: 1) Baird Island, 2) Baird Peninsula, 3) Kigigak Island, 4) Kokechik Bay, and 5) Tutakoke River. -166.239 -165.301 61.737 60.762 USGS Metadata Identifier USGS:ASC224 ISO 19115 Topic Categories Biota Environment ImageryBaseMapsEarthCover NASA GCMD Earth Science Keywords Thesaurus Earth Science Biosphere Vegetation Herbivory Vegetation cover Ecological dynamics Trophic dynamics Community dynamics Grazing Dynamics/Plant Ecology Land surface Land Use/Land cover classification USGS Biocomplexity Thesaurus Grazing Trophic relationships Herbivores Herbivory Tritrophic interactions Plant-animal relationships Vegetation Wildlife food plants USGS Thesaurus Photography Videography Image collections Aerial photography Community ecology Ecological processes Long-term ecological monitoring USGS Geographic Names Information System (GNIS) Alaska Yukon Delta Kigigak Island Kokechik Bay Tutakoke River Baird Inlet Protected Areas Database of the United States (PAD-US) Yukon Delta National Wildlife Refuge No access constraints. No use constraints. We request that the suggested citation of this USGS data release be included in any publications that reference or utilize these data. U.S. Geological Survey, Alaska Science Center Mailing and Physical

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Anchorage Alaska 99508 USA 907-786-7000 gs-ak_asc_datamanagers@usgs.gov Michael Anthony and Heather Wilson performed aerial photographic surveys. Michael Anthony and Thomas Day assisted with habitat classifications. Uher-Koch, B.D. Schmutz, J.A. Wilson, H.M. Anthony, R.M. Day, T.L. Fondell, T.F. Person, B.T. Sedinger, J.S. 2019 journal article Ecosphere 10(6):e02767 Uher-Koch, B.D., Schmutz, J.A., Wilson, H.M., Anthony, R.M., Day, T.L., Fondell, T.F., Person, B.T., Sedinger, J.S., 2019. Ecosystem scale loss of grazing habitat impacted by abundance of dominant herbivores. Ecosphere 10(6):e02767. https://doi.org/10.1002/ecs2.2767 https://doi.org/10.1002/ecs2.2767 Lohman, M.G. Riecke, T.V. Acevedo, C.R. Person, B.T. Schmutz, J.A. Uher-Koch, B.D. Sedinger, J.S. 2019 journal article Ecology and Evolution 9(9):5281–5291 Lohman, M.G., Riecke, T.V., Acevedo, C.R., Person, B.T., Schmutz, J.A., Uher-Koch, B.D., Sedinger, J.S. 2019. Changes in behavior are unable to disrupt a trophic cascade involving a specialist herbivore and its food plant. Ecology and Evolution 9(9):5281-5291. https://doi.org/10.1002/ece3.5118 https://doi.org/10.1002/ece3.5118 All attributes were cross-checked and verified with original data. Attribute values fall within expected ranges. No data were omitted and there are no missing data. FIELD: Aerial photographic surveys were flown to capture videos or images. Vegetation was sampled to determine the accuracy of habitat classification. Methods follow past studies outlined in Lake et al. 2006, Wilson 2017, and Anthony 1995. Unknown PROCESSING: Digitally overlaid 180 white sample dots (12 x 15 dot grid) on each aerial image using MATLAB Image Processing Toolbox (IPT; MathWorks Inc., Natick, MA, USA). Images were brought into Adobe Photoshop (Adobe Systems Inc., San Jose, CA, USA) and each dot was colored based on the habitat class category in which it occurred. The number of dots in each habitat class were counted using MATLAB IPT. Unknown LITERATURE CITED: Lake, B.C., M.S. Lindberg, J.A. Schmutz, R.M. Anthony, and F.J. Broerman. 2006. Using videography to quantify landscape-level availability of habitat for grazers: an example with emperor geese in western Alaska. Arctic 59: 252-260. https://www.jstor.org/stable/40512812 Wilson, H.M. 2017. Aerial photographic survey of brant colonies on the Yukon-Kuskokwim Delta, Alaska, 2016. Unpublished Report, Migratory Bird Management, U.S. Fish and Wildlife Service, Anchorage, AK. Anthony, R.M., W.H. Anderson, J.S. Sedinger, and L.L. McDonald. 1995. Estimating populations of nesting brant using aerial videography. Wildlife Society Bulletin 23:80-87. https://www.jstor.org/stable/3783199 Unknown Aerial images were sampled at the five primary black brant colonies. Colony site names indicate a representative local geographic name (Baird Island, Baird Peninsula, Kigigak Island, Kokechik Bay, Tutakoke River). aerialImagery_brantColonyHabitat_ykDelta_uherKoch_1993_2016.csv Table providing an inventory of aerial imagery collected at 5 brant colonies 1993-2016. The table includes: year, site, and number of dots (from a 12 x 15 gird of dots digitally overlaid on each aerial photo) in each habitat class of each sampled image. Presented in a Comma Separated Value (CSV) formatted table. Author defined Year The year the image was captured. Author defined 1993 2016 Year Colony One of five primary black brant colonies where the image was captured. Author defined BI Baird Island. Latitude 60.84N, Longitude 164.63W (WGS84). Author defined BP Baird Peninsula. Latitude 60.88N, Longitude 164.69W (WGS84). Author defined KI Kigigak Island. Latitude 60.83N, Longitude 165.01W (WGS84). Author defined KB Kokechik Bay. Latitude 61.65N, Longitude 165.95W (WGS84). Author defined TR Tutakoke River. Latitude 61.23N, Longitude 165.62W (WGS84). Author defined ImageID Unique identifier for each image. Author defined Unique identifier for each image. Format for image names include a two-digit colony identifier followed by the two-digit year. For example, all images captured at Baird Island in 1993 begin with "BI93" followed by a number identifying the specific image. Sedge The number of dots (out of 180) of sedge habitat in each image. Author defined 0 180 Water The number of dots (out of 180) of water in each image. Author defined 0 180 Mud The number of dots (out of 180) of mud in each image. Author defined 0 180 Upland The number of dots (out of 180) of upland habitat in each image. Author defined 0 180 Lawn The number of dots (out of 180) of grazing lawn habitat in each image. Author defined 0 180 Levee The number of dots (out of 180) of levee in each image. Author defined 0 180 Other The number of dots (out of 180) of other habitat in each image. "Other" was used when the habitat class of a dot did not fall into any of the other six classes. Author defined 0 180 U.S. Geological Survey USGS ScienceBase Team Mailing and Physical

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Denver Colorado 80225 USA 1-888-275-8747 sciencebase@usgs.gov The U.S. Geological Survey, Alaska Science Center is the authoritative source of these data, distributed by ScienceBase (a USGS Trusted Digital Repository). Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey, no warranty expressed or implied is made regarding the display or utility of the data for other purposes or on all computer systems, nor shall the act of distribution constitute any such warranty. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government. CSV Tabular data in CSV format; FGDC metadata in XML and HTML formats. https://doi.org/10.5066/P9CJ2YZQ None 20250226 U.S. Geological Survey, Alaska Science Center Mailing and Physical

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Anchorage Alaska 99508 USA 907-786-7000 gs-ak_asc_datamanagers@usgs.gov FGDC Biological Data Profile of the Content Standard for Digital Geospatial Metadata (CSDGM) FGDC-STD-001.1-1999