Coastal and Marine Ecosystems Classification--Admiralty Inlet, Washington

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Coastal and Marine Ecosystems Classification--Admiralty Inlet, Washington
This part of OFR 2015-1073 presents data for the substrate, geomorphic, and biotope maps (see sheet 2, 3, and 4, OFR 2015-1073) of the Admiralty Inlet map area, Washington. The vector data file is included in "," which is accessible from <>.
Given the variable bathymetric resolution, the complex geologic history of the region, and the lack of acoustic backscatter data, automated and semi-automated classification schemes of classifying seafloor substrate and geoform were deemed to have very low accuracy. Instead, classification of these properties was performed manually following the “Coastal and Marine Ecological Classification Standard” (CMECS) (Madden and others, 2009). The CMECS Geoform map (Sheet 2) and the CMECS Substrate map (Sheet 3) display their CMECS variable counterparts found in the CMECS polygon shapefile.
The best overall predictors of biotic assemblage were used to generate the CMECS biotope map (Sheet 4) which displays the biotope variable in the CMECS polygon shapefile. However, the nature of the biological data gathered makes it difficult to define clear ‘biotopes’. It was difficult to see or identify many organisms in the video; with an average of only 3-4 taxa per sampling unit, it is hard to characterize biotic assemblages. Some biological clusters of taxa were identified statistically for multiple map areas, and within each area, some of these groupings were found at consistent depths and/or with predictable substrates. The maps are not fine-grained enough to capture the physical variation seen within one-minute video units. The biological data suggest that to some degree these combinations of physical parameters correspond to ‘biotopes’, i.e. that there is some level of predictability about the associations of plants and animals that will be found with different combinations of geological and oceanographic parameters. Depth zones in the biotope map are based on Dethier (1992).
References Cited: Dethier, M.N. 1992. Classifying marine and estuarine natural communities: an alternative to the Cowardin system. Natural Areas Journal 12(2):90-100. Madden, C.J., K. Goodin, R.J. Allee, G. Cicchetti, C. Moses, M. Finkbeiner, D. Bamford. 2009. Coastal and marine ecological classification standard (Version 3). NOAA and NatureServe. 126 pp. <>

Map political location: King and Island Counties, Washington Compilation scale: 1:30,000 Base maps used are hillshades generated from IfSAR, LiDAR, and multibeam mapping both onshore and offshore (see sheet 1, OFR 2015-1073 for more information).
  1. How should this data set be cited?

    Cochrane, Guy R., Hodson, Timothy O., and Dethier, Megan N., 2015, Coastal and Marine Ecosystems Classification--Admiralty Inlet, Washington:.

    This is part of the following larger work.

    Cochrane, Guy R., Dethier, Megan N., Hodson, Timothy O., Kull, Kristine J., Golden, Nadine E., Ritchie, Andrew C., Moegling, Crescent H., and Pacunski, Robert E., 2014, Southern Salish Sea Habitat Map Series--Admiralty Inlet: Scientific Investigations Map OFR 2015-1073, U.S. Geological Survey, Reston, VA.

    Online Links:

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: -122.959728
    East_Bounding_Coordinate: -122.554836
    North_Bounding_Coordinate: 48.321176
    South_Bounding_Coordinate: 48.050423

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    Calendar_Date: 2013
    Currentness_Reference: Publication Date

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    Geospatial_Data_Presentation_Form: vector digital data

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  3. To whom should users address questions about the data?

    USGS Pacific Coastal & Marine Science Center
    Attn: Guy R. Cochrane
    400 Natural Bridges Drive
    Santa Cruz, CA 95060

    (831) 460-7554 (voice)
    (831) 427-4748 (FAX)

Why was the data set created?

To expand geologic mapping to the seafloor within Washington's State Waters, to update coastal habitat mapping, and to contribute to a uniform regional habitat database. Additionally, to provide a habitat map for the public and ecoscience community to aid in land-use and land-management decisions both onshore and offshore.

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Access_Constraints: None
This information is not intended for navigational purposes. Read and fully comprehend the metadata prior to data use. Uses of these data should not violate the spatial resolution of the data. Where these data are used in combination with other data of different resolution, the resolution of the combined output will be limited by the lowest resolution of all the data.

Acknowledge the U.S. Geological Survey in products derived from these data. Share data products developed using these data with the U.S. Geological Survey.

This database has been approved for release and publication by the Director of the USGS. Although this database has been subjected to rigorous review and is substantially complete, the USGS reserves the right to revise the data pursuant to further analysis and review. Furthermore, it is released on condition that neither the USGS nor the United States Government may be held liable for any damages resulting from its authorized or unauthorized use.

Although this Federal Geographic Data Committee-compliant metadata file is intended to document these data in nonproprietary form, as well as in ArcInfo format, this metadata file may include some ArcInfo-specific terminology.

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