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  • Benthic Habitat Maps for Rose Atoll Marine National Monument in American Samoa from 2004 to 2010

    Metadata Updated: November 4, 2022

    Benthic habitat maps for Rose Atoll, American Samoa were derived from high resolution, multispectral satellite imagery for 2004, 2006, and 2010. The benthic habitat maps for 2004 were previously generated by NOAA's NCCOS's BioGeography Branch before this project, and they were gathered from NOAA's 2005 publication (NCCOS, 2005). The benthic habitat maps for 2006 and 2010 were generated in this project. Bathymetry (water depth) from 0 to 30 meters was derived from satellite imagery for 2006 and 2010 and validated with multibeam and singlebeam depth data, respectively. Eight geomorphological features of the seafloor (Mean Depth, Standard Deviation of Depth, Slope, Slope of Slope, Rugosity, Curvature, Plan Curvature, and Profile Curvature) were derived from the bathymetry for 2006 and 2010. The geomorphological features were used to perform a Principal Component Analysis (PCA), and the first three Principal Components were used in combination with classified benthic imagery (underwater images of the seafloor) to classify the underwater habitat of the inner lagoon and sloping reef areas of Rose Atoll.

    The final benthic habitat maps consist of two maps for each of the three years. The first map shows the four dominant cover types that make up the shallow water benthic habitat on Rose Atoll, which are coral, coralline algae, macroalgae, and turf algae. The area in square kilometers of each cover types is provided. The purpose of the first map is to show the most abundant biological cover types in the benthic habitat. The second map show the percentages of the four dominant cover types, which are divided into three bins: 10%-<50% coverage, 50%-<90% coverage, and 90%-100% coverage. The area in square kilometers of each of the cover types is also provided. The purpose of the second map is to examine the smaller changes in the benthic habitat over the three years.

    Access & Use Information

    License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

    Downloads & Resources

    Dates

    Metadata Date October 23, 2022
    Metadata Created Date November 12, 2020
    Metadata Updated Date November 4, 2022
    Reference Date(s) 2017 (publication)
    Frequency Of Update notPlanned

    Metadata Source

    Harvested from NMFS PIFSC

    Additional Metadata

    Resource Type Dataset
    Metadata Date October 23, 2022
    Metadata Created Date November 12, 2020
    Metadata Updated Date November 4, 2022
    Reference Date(s) 2017 (publication)
    Responsible Party (Point of Contact, Custodian)
    Contact Email
    Guid gov.noaa.nmfs.inport:46886
    Access Constraints Cite As: Pacific Islands Fisheries Science Center, [Date of Access]: Benthic Habitat Maps for Rose Atoll Marine National Monument in American Samoa from 2004 to 2010 [Data Date Range], https://www.fisheries.noaa.gov/inport/item/46886., Access Constraints: None | Use Constraints: These data are not to be used for navigation purposes. Please cite NOAA Coral Reef Ecosystem Program (CREP) when using the data. Suggested citation: Roberson, Liana; Coral Reef Ecosystem Program; Pacific Islands Fisheries Science Center (2017). Benthic Habitat Maps for Rose Atoll Marine National Monument in American Samoa from 2004 to 2010. Pacific Islands Benthic Habitat Mapping Center, https://www.fisheries.noaa.gov/inport/item/46886. | Distribution Liability: While every effort has been made to ensure that these data are accurate and reliable within the limits of the current state of the art, NOAA cannot assume liability for any damages caused by errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty.
    Bbox East Long -168.13
    Bbox North Lat -14.52
    Bbox South Lat -14.57
    Bbox West Long -168.18
    Coupled Resource
    Frequency Of Update notPlanned
    Harvest Object Id 82acffbf-97f9-4ff0-ad28-242eb1580bb9
    Harvest Source Id c0beac72-5f43-4455-8c33-1b345fbc2dfe
    Harvest Source Title NMFS PIFSC
    Licence NOAA provides no warranty, nor accepts any liability occurring from any incomplete, incorrect, or misleading data, or from any incorrect, incomplete, or misleading use of the data. It is the responsibility of the user to determine whether or not the data is suitable for the intended purpose.
    Lineage To create the benthic habitat maps showing Dominant Cover Types and Percentages of Dominant Cover Types of the shallow water benthic habitat of Rose Atoll for 2006 and 2010, the Maximum Likelihood Supervised Classification (MLC) tool in ArcGIS for Desktop was used to classify the three bands from the Principle Component Analysis (PCA) performed on the eight derived geomorphological features of the seafloor.
    Metadata Language eng
    Metadata Type geospatial
    Old Spatial {"type": "Polygon", "coordinates": [[[-168.18, -14.57], [-168.13, -14.57], [-168.13, -14.52], [-168.18, -14.52], [-168.18, -14.57]]]}
    Progress completed
    Spatial Data Service Type
    Spatial Reference System
    Spatial Harvester True
    Temporal Extent Begin 2006-02-01
    Temporal Extent End 2006-03-01

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