Schoen, Sarah K. (ORCID: 0000-0002-5685-5185) Heflin, Brielle M. (ORCID: 0000-0002-4836-9187) Piatt, John F. (ORCID: 0000-0002-4417-5748) Arimitsu, Mayumi L. (ORCID: 0000-0001-6982-2238) 20180215 tabular digital data Marine Ecology near Tufted Puffin Colonies across the Aleutian Archipelago and Alaska Peninsula, 2012-2014 . Anchorage, Alaska U.S. Geological Survey, Alaska Science Center Suggested Citation: Schoen, S.K., Heflin, B., Piatt, J.F., Arimitsu, M.L., Drew, G.S., Douglas, D.C., and Renner, M., 2018, Marine ecology near Tufted Puffin colonies across the Aleutian Archipelago and Alaska Peninsula, 2012-2014: U.S. Geological Survey data release, https://doi.org/10.5066/F7TQ60GV https://doi.org/10.5066/F7TQ60GV These data comprise of hydroacoustic backscatter data along transects in the North Pacific and Bering Sea conducted in August 2012 and 2014. We echointegrated hydroactoustic backscatter and used that as a proxy for forage fish biomass. The dataset consists of comma delimited files for 120Hz frequency. Each file contains analysis exports from EchoView Software Pty Ltd. ver. 5.4. The purpose of this data collection effort was to measure hydroacoustic backscatter as a proxy for forage fish biomass in the water column. 20120815 20140816 observed Complete None planned North Pacific and Bering Sea -180.0000 -151.0840 66.0180 50.2332 USGS Metadata Identifier USGS:ASC168 ISO 19115 Topic Category Biota Oceans Environment NASA GCMD Earth Science Keyword Thesaurus Birds Marine ecosystems USGS Biocomplexity Thesaurus Fishery technology Aquatic Sciences and Fisheries Marine fisheries Fishes Aquaculture Depth USGS Thesaurus Acoustic methods Fishery resources None Acoustic backscatter Nautical area scattering coefficient USGS Geographic Names Information System (GNIS) Alaska Gulf of Alaska Aleutian Islands Alaska Peninsula North Pacific Bering Sea 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

4210 University Drive

Anchorage Alaska 99508 USA 907-786-7000 gs-ak_asc_datamanagers@usgs.gov This work was funded by the U.S. Geological Survey (USGS), Ecosystems Mission Area, and the Landscape Conservation Cooperative (LCC) program of both USGS and the U.S. Fish and Wildlife Service (USFWS). The USFWS Alaska Maritime National Wildlife Refuge (AMNWR) and the Aleutian and Bering Sea Islands LCC also provided financial and logistic support. We are grateful to AMNWR managers Steve Delehanty, Jeff Williams, and Heather Renner for program support and for the use of data from Aiktak and Buldir, and to Captain William Pepper and crew of the R/V Tig ̂lax ̂ for outstanding research logistic support in the Aleutians. Additional advice and support was provided by Vernon Byrd, Scott Hatch, Lisa Spitler, and Bill Sydeman. We are especially grateful to those who joined us in the field work and contributed enthusiastically to our data collection: Josh Adams, Allison Anholt, Amanda Gladics, Keith Hobson, Kelli Johnson, Forrest Piatt, Barry Sampson, Jane Sullivan, and Ajay Varma. Any use of trade names is for descriptive purposes only and does not represent endorsement by the federal government. The original data is stored as CNV files and is also made available in this format for dissemination. Schoen, S.K. Piatt, J.F. Arimitsu, M.L. Heflin, B.M. Madison, E.N. Drew, G.S. Renner, M. Rojek, N.A. Douglas, D.C. DeGange, A.R. 2018 journal article Marine Biology 165:47 online Springer Nature Schoen, S.K., Piatt, J.F., Arimitsu, M.L., Heflin, B.M., Madison, E.N., Drew, G.S., Renner, M., Rojek, N.A., Douglas, D.C., DeGange, A.R., 2018. Avian predator buffers against variability in marine habitats with flexible foraging behavior. Marine Biology 164:47. https://doi.org/10.1007/s00227-018-3304-4 https://doi.org/10.1007/s00227-018-3304-4 We used a hull-mounted 38-120 kHz split-beam hydroacoustics system (SIMRAD EK500 in 2012 and EK60 in 2014) to measure hydroacoustic backscatter in the water column continuously. https://www.echoview.com/ https://www.echoview.com/ We applied the most recent calibration settings for the EK500 system (2008; D. Dragoo pers. comm.) to the data in 2012. In 2014, we calibrated the EK 60 system prior to surveys by suspending a 38.1 mm diameter tungsten carbide sphere below each transducer following Foote et al. (1987). Due to a technical error during data collection in 2012 we were unable to calibrate the hydroacoustic system prior to those surveys, so used a previous calibration (2008; D. Dragoo pers. comm.) to the data. Equipment malfunction precluded hydroacoustic sampling in 2013. New hydroacoustic equipment was installed on the vessel in 2014 (EK60). Data is complete, missing latitude and longitude are represented as 999 and blank fields in the depth are representative of the bottom depth. Latitude and longitude coordinates were obtained from a commercially available Garmin GPS with a resolution to within ± 4 m. FIELD: Hydroacoustic data were obtained from a hull-mounted 38-120 kHz split-beam hydroacoustics system (SIMRAD EK500 and EK60 in 2012 and 2014 respectively). Transducers were calibrated at the start of each survey following Foote et al. (1987). Raw data were collected to a maximum depth of 500 m at 0.512 ms transmitted pulse length. 2016 LAB: Sounder-detected bottom lines were edited by visually inspecting the 120 kHz echogram. Passive noise was removed from both transducers using a data generator for each frequency following Parker-Stetter et al. 2009, and background noise was removed from the 120 kHz transducer following De Robertis and Higginbottom (2007). Any data below the bottom line (1 meter above the seafloor) and above 9 meters for Vsevidof and 7 meters for all other colonies from the surface were excluded from the integration export. 2016 LITERATURE CITED: De Robertis, A., Higginbottom, I., 2007. A post-processing technique to estimate the signal-to-noise ratio and remove echosounder background noise. ICES Journal of Marine Science, 64: 1282–1291. Foote, K., Knudsen, H., Vestnes, G., MacLennan, D.N., Simmonds, E.J., 1987. Calibration of acoustic instruments for fish density estimation: A practical guide. ICES Cooperative Research Report, Copenhagen, Denmark Parker-Stetter, S.L., Rudstam, L.G., Sullivan, P.J., Warner, D.M., 2009. Standard operating procedures for fisheries acoustic surveys In The Great Lakes. New York Sea Grant Institute. https://repository.library.noaa.gov/view/noaa/42588 Unknown Latitude and longitude point locations were recorded continuously during transects using SIMRAD ER60 ver.2.4.3. Point 0.00001 0.0001 Decimal degrees World Geodetic System of 1984 World Geodetic System of 1984 6378137 298.257223563 Processed_Hydroacoustic_NASC120Hz_NorthPacific_BeringSea_2012_2014.csv hydroacoustic survey data. Presented in a Comma Separated Value (CSV) formatted table. Author defined station station name references the name of the Island that the surveys were conducted around in a radial pattern Author defined text field, Island name date Reports the date of the ping in the domain which was analyzed Author defined 8/15/2012 8/16/2014 date, MM/DD/YYYY time Reports the time (UTC) of the ping in the domain which was analyzed Author defined 00:00:07.7500 23:59:48.2500 hh:mm:ss.ssss latitude Reports the latitude (in decimal degrees) of the ping in the domain which was analyzed, if field is blank location data is missing Author defined 52.91867 57.21385 decimal degrees longitude Reports the longitude (in decimal degrees) of the ping in the domain which was analyzed, if field is blank location data is missing Author defined -168.5454138 -152.9852425 decimal degrees interval Reports the interval number of the cell being analyzed, division on the time/distance axis of a grid, i.e. intervals are delineated by vertical bands on an echogram. Author defined 1 1311 whole number 25 Reports the Nautical area scattering coefficient - 4π = Steradians in a sphere - converting "backscattering" cross-section to "scattering" cross-section, 1852 = meters per nautical mile (m/nmi)), Sv = mean volume backscattering strength of the domain being integrated (dB re 1 m²/m³), T = mean thickness of the domain being integrated. NASC=4π×〖1852〗^2×〖10〗^(Sv/10)×T, NASC = 4π×〖1852〗^2×〖10〗^((Sv_mean)/10)×Thickness_mean. The layer depth being analyzed is >25 meters division on the depth/range axis of a grid, i.e. layers are delineated by horizontal bands on an echogram. Author defined 0.75 132746.30 (dB re 1 m²/m³) 50 Reports the Nautical area scattering coefficient - 4π = Steradians in a sphere - converting "backscattering" cross-section to "scattering" cross-section, 1852 = meters per nautical mile (m/nmi), Sv = mean volume backscattering strength of the domain being integrated (dB re 1 m²/m³), T = mean thickness of the domain being integrated. NASC = 4π×〖1852〗^2×〖10〗^(Sv/10)×T, NASC = 4π×〖1852〗^2×〖10〗^((Sv_mean)/10)×Thickness_mean. The layer depth being analyzed is 25-50 meters division on the depth/range axis of a grid, i.e. layers are delineated by horizontal bands on an echogram. Author defined 0.00 170293.11 (dB re 1 m²/m³) 75 Reports the Nautical area scattering coefficient - 4π = Steradians in a sphere - converting "backscattering" cross-section to "scattering" cross-section, 1852 = meters per nautical mile (m/nmi), Sv = mean volume backscattering strength of the domain being integrated (dB re 1 m²/m³), T= mean thickness of the domain being integrated. NASC = 4π×〖1852〗^2×〖10〗^(Sv/10)×T, NASC = 4π×〖1852〗^2×〖10〗^((Sv_mean)/10)×Thickness_mean. The layer depth being analyzed is 50-75 meters division on the depth/range axis of a grid, i.e. layers are delineated by horizontal bands on an echogram. Author defined 0.00 132730.36 (dB re 1 m²/m³) 100 Reports the Nautical area scattering coefficient - 4π = Steradians in a sphere - converting "backscattering" cross-section to "scattering" cross-section, 1852 = meters per nautical mile (m/nmi), Sv = mean volume backscattering strength of the domain being integrated (dB re 1 m²/m³), T = mean thickness of the domain being integrated. NASC = 4π×〖1852〗^2×〖10〗^(Sv/10)×T, NASC = 4π×〖1852〗^2×〖10〗^((Sv_mean)/10)×Thickness_mean. The layer depth being analyzed is 75-100 meters division on the depth/range axis of a grid, i.e. layers are delineated by horizontal bands on an echogram. Author defined 0.00 62346.49 (dB re 1 m²/m³) 125 Reports the Nautical area scattering coefficient - 4π = Steradians in a sphere - converting "backscattering" cross-section to "scattering" cross-section, 1852 = meters per nautical mile (m/nmi), Sv = mean volume backscattering strength of the domain being integrated (dB re 1 m²/m³), T = mean thickness of the domain being integrated. NASC = 4π×〖1852〗^2×〖10〗^(Sv/10)×T, NASC = 4π×〖1852〗^2×〖10〗^((Sv_mean)/10)×Thickness_mean. The layer depth being analyzed is 100-125 meters division on the depth/range axis of a grid, i.e. layers are delineated by horizontal bands on an echogram. Author defined 0.00 46504.92 (dB re 1 m²/m³) 150 Reports the Nautical area scattering coefficient - 4π = Steradians in a sphere - converting "backscattering" cross-section to "scattering" cross-section, 1852 = meters per nautical mile (m/nmi), Sv = mean volume backscattering strength of the domain being integrated (dB re 1 m²/m³), T = mean thickness of the domain being integrated. NASC = 4π×〖1852〗^2×〖10〗^(Sv/10)×T, NASC = 4π×〖1852〗^2×〖10〗^((Sv_mean)/10)×Thickness_mean. The layer depth being analyzed is 125-150 meters division on the depth/range axis of a grid, i.e. layers are delineated by horizontal bands on an echogram. Author defined 0.00 52890.75 (dB re 1 m²/m³) 175 Reports the Nautical area scattering coefficient - 4π = Steradians in a sphere - converting "backscattering" cross-section to "scattering" cross-section, 1852 = meters per nautical mile (m/nmi), Sv = mean volume backscattering strength of the domain being integrated (dB re 1 m²/m³), T = mean thickness of the domain being integrated. NASC = 4π×〖1852〗^2×〖10〗^(Sv/10)×T, NASC = 4π×〖1852〗^2×〖10〗^((Sv_mean)/10)×Thickness_mean. The layer depth being analyzed is 150-175 meters division on the depth/range axis of a grid, i.e. layers are delineated by horizontal bands on an echogram. Author defined 0.00 107858.35 (dB re 1 m²/m³) 200 Reports the Nautical area scattering coefficient - 4π = Steradians in a sphere - converting "backscattering" cross-section to "scattering" cross-section, 1852 = meters per nautical mile (m/nmi), Sv = mean volume backscattering strength of the domain being integrated (dB re 1 m²/m³), T = mean thickness of the domain being integrated. NASC = 4π×〖1852〗^2×〖10〗^(Sv/10)×T, NASC = 4π×〖1852〗^2×〖10〗^((Sv_mean)/10)×Thickness_mean. The layer depth being analyzed is 175-200 meters division on the depth/range axis of a grid, i.e. layers are delineated by horizontal bands on an echogram. Author defined 0.00 85411.57 (dB re 1 m²/m³) 225 Reports the Nautical area scattering coefficient - 4π = Steradians in a sphere - converting "backscattering" cross-section to "scattering" cross-section, 1852 = meters per nautical mile (m/nmi), Sv = mean volume backscattering strength of the domain being integrated (dB re 1 m²/m³), T = mean thickness of the domain being integrated. NASC = 4π×〖1852〗^2×〖10〗^(Sv/10)×T, NASC = 4π×〖1852〗^2×〖10〗^((Sv_mean)/10)×Thickness_mean. The layer depth being analyzed is 200-225 meters division on the depth/range axis of a grid, i.e. layers are delineated by horizontal bands on an echogram. Author defined 0.00 1035.202 (dB re 1 m²/m³) 250 Reports the Nautical area scattering coefficient - 4π = Steradians in a sphere - converting "backscattering" cross-section to "scattering" cross-section, 1852 = meters per nautical mile (m/nmi), Sv = mean volume backscattering strength of the domain being integrated (dB re 1 m²/m³), T = mean thickness of the domain being integrated. NASC = 4π×〖1852〗^2×〖10〗^(Sv/10)×T, NASC = 4π×〖1852〗^2×〖10〗^((Sv_mean)/10)×Thickness_mean. The layer depth being analyzed is 225-250 meters division on the depth/range axis of a grid, i.e. layers are delineated by horizontal bands on an echogram. Author defined 0 0 (dB re 1 m²/m³) U.S. Geological Survey USGS ScienceBase Team Mailing and Physical

Denver Federal Center, Building 810, Mail Stop 302

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/F7TQ60GV None 20241106 U.S. Geological Survey, Alaska Science Center Mailing and Physical

4210 University Drive

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