Short Citation:
Pacific Islands Fisheries Science Center, 2021: Benthic Habitat Maps for Rose Atoll Marine National Monument in American Samoa from 2004 to 2010, https://www.fisheries.noaa.gov/inport/item/46886.

Item Identification

Title: Benthic Habitat Maps for Rose Atoll Marine National Monument in American Samoa from 2004 to 2010
Short Name: Rose Atoll BHMs from 2004 to 2010
Status: Completed
Publication Date: 2017
Abstract:

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.

Purpose:

The benthic habitat maps were prepared by the Coral Reef Ecosystem Program (CREP) and funded by the Coral Reef Conservation Program (CRCP), in order to determine the feasibility of an automated image analysis program known as CoralNet. These maps were also used in a graduate research project, in order to examine any spatial and temporal changes in the shallow water benthic habitat of Rose Atoll in the years where sufficient spatial data were available. Therefore, the spatial and temporal changes in the shallow water benthic habitat were examined for the years 2004, 2006, and 2010.

Other Citation Details:

NCCOS, N. (2005). Atlas of the shallow water benthic habitats of American Samoa, Guam, and the Commonwealth of the Northern Marianas Islands. NOAA Tech. Memo. NOS NCCOS. 8.

Keywords

Theme Keywords

Thesaurus Keyword
CoRIS Discovery Thesaurus Geographic Information > Habitats
CoRIS Theme Thesaurus EARTH SCIENCE > Biosphere > Aquatic Habitat > Benthic Habitat
CoRIS Theme Thesaurus EARTH SCIENCE > Biosphere > Aquatic Habitat > Reef Habitat
CoRIS Theme Thesaurus EARTH SCIENCE > Oceans > Bathymetry/Seafloor Topography > Bathymetry
CoRIS Theme Thesaurus EARTH SCIENCE > Oceans > Bathymetry/Seafloor Topography > Slope
CoRIS Theme Thesaurus EARTH SCIENCE > Oceans > Coastal Processes > Coral Reefs
CoRIS Theme Thesaurus EARTH SCIENCE > Oceans > Coastal Processes > Coral Reefs > Coral Reef Ecology > Habitats
CoRIS Theme Thesaurus EARTH SCIENCE > Oceans > Coastal Processes > Coral Reefs > Coral Reef Ecology > Lagoons
CRCP Project 467
CRCP Project Mapping and EcoSpatial Information Products to Support Coral Reef Ecosystem Management in the Pacific Islands Region
ISO 19115 Topic Category 002
ISO 19115 Topic Category 006
ISO 19115 Topic Category 014
ISO 19115 Topic Category Biota
ISO 19115 Topic Category Elevation
ISO 19115 Topic Category Oceans
NODC DATA TYPES THESAURUS BOTTOM TYPE
NODC DATA TYPES THESAURUS seafloor topography
NODC DATA TYPES THESAURUS SUBSTRATE DESCRIPTION
NODC OBSERVATION TYPES THESAURUS benthic
NODC OBSERVATION TYPES THESAURUS GIS product
NODC PROJECT NAMES THESAURUS Coral Reef Conservation Program
NODC SUBMITTING INSTITUTION NAMES THESAURUS US DOC; NOAA; NMFS; Pacific Islands Fisheries Science Center; Ecosystem Sciences Division; Coral Reef Ecosystem Program
None Benthic habitat
None Coral Reef Ecosystem Division
None Coral Reef Ecosystem Program
None CRED
None CREP
None Pacific Islands Fisheries Science Center
None PIFSC

Spatial Keywords

Thesaurus Keyword
CoRIS Place Thesaurus COUNTRY/TERRITORY > United States of America > American Samoa > American Samoa > Rose Atoll (14S168W0001)
CoRIS Place Thesaurus COUNTRY/TERRITORY > United States of America > American Samoa > American Samoa > Rose Island (14S170W0041)
CoRIS Place Thesaurus OCEAN BASIN > Pacific Ocean > American Samoa > Rose Atoll (14S168W0001)
CoRIS Place Thesaurus OCEAN BASIN > Pacific Ocean > Rose Atoll > Rose Island (14S170W0041)
NODC SEA AREA NAMES THESAURUS Rose Atoll Marine National Monument
NODC SEA AREA NAMES THESAURUS South Pacific Ocean

Physical Location

Organization: Pacific Islands Fisheries Science Center
City: Honolulu
State/Province: HI
Country: USA

Data Set Information

Data Set Scope Code: Data Set
Data Set Type: GIS dataset of raster files
Maintenance Frequency: None Planned
Data Presentation Form: Map (digital)
Entity Attribute Overview:

The Dominant Cover Type maps show four dominant cover types (Coral, Coralline Algae, Macroalgae, and Turf). The Percentages of Biological Cover Type maps show three percentages for each cover type (10-<50%, 50-<90%, 90-100%).

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.

Data Set Credit: PIFSC Coral Reef Ecosystem Program and funded by the NOAA Coral Reef Conservation Program

Support Roles

Data Steward

CC ID: 577238
Date Effective From: 2017-08
Date Effective To:
Contact (Person): Suka, Rhonda
Address: 1845 Wasp Blvd.
Honolulu, HI 96818
USA
Email Address: rhonda.suka@noaa.gov
Phone: (808)725-5494

Data Steward

CC ID: 576933
Date Effective From: 2015
Date Effective To: 2017-07
Contact (Person): Roberson, Liana K
Address: 1845 Wasp Blvd.
Honolulu, HI 96839
USA
Email Address: liana.roberson@noaa.gov
Phone: 808-725-5498
Business Hours: 9a-5p
Contact Instructions:

Email Address: lianaroberson@yahoo.com (NOAA email inactive)

Phone Number: 832-207-9996

Email preferred

Distributor

CC ID: 576937
Date Effective From: 2015
Date Effective To:
Contact (Person): Akridge, Michael W
Address: 1845 Wasp Blvd.
Honolulu, HI 96818
USA
Email Address: michael.akridge@noaa.gov
Phone: (808)725-5483
Contact Instructions:

Email preferred

Metadata Contact

CC ID: 576934
Date Effective From: 2015
Date Effective To:
Contact (Person): DesRochers, Annette M
Address: 1845 Wasp Blvd.
Honolulu, HI 96818
USA
Email Address: annette.desrochers@noaa.gov
Phone: (808)725-5461
Business Hours: 8 am - 5 pm
Contact Instructions:

Email preferred

Originator

CC ID: 576935
Date Effective From: 2015
Date Effective To:
Contact (Organization): NOAA Coral Reef Conservation Program (CRCP) (CRCP)
Address: 1305 East West Highway 10th Floor
Silver Spring, MD 20910-3281
Phone: (301) 713-3155
URL: http://coralreef.noaa.gov

Originator

CC ID: 576936
Date Effective From: 2015
Date Effective To:
Contact (Organization): Pacific Islands Fisheries Science Center (PIFSC)
Address: 1845 Wasp Blvd.
Honolulu, HI 96818
USA
Phone: 808-725-5300
URL: http://www.pifsc.noaa.gov
Business Hours: 8:00 a.m. - 4:30 p.m.

Point of Contact

CC ID: 576932
Date Effective From: 2015
Date Effective To:
Contact (Person): DesRochers, Annette M
Address: 1845 Wasp Blvd.
Honolulu, HI 96818
USA
Email Address: annette.desrochers@noaa.gov
Phone: (808)725-5461
Business Hours: 8 am - 5 pm

Extents

Currentness Reference: Ground Condition

Extent Group 1

Extent Description:

Rose Atoll, American Samoa

Extent Group 1 / Geographic Area 1

CC ID: 576930
W° Bound: -168.18
E° Bound: -168.13
N° Bound: -14.52
S° Bound: -14.57
Description

Rose Atoll is a diamond shaped coral atoll in the South Pacific Ocean. It is the easternmost island of the Samoan Archipelago and the southernmost U.S. protected area.

Extent Group 1 / Time Frame 1

CC ID: 576926
Time Frame Type: Discrete
Start: 2002
Description:

Multispectral IKONOS-2 satellite imagery collected in 2002 by DigitalGlobe and was used to generate the benthic habitat maps for 2004 and 2006.

Extent Group 1 / Time Frame 2

CC ID: 576927
Time Frame Type: Range
Start: 2006-02
End: 2006-03
Description:

Five meter resolution, multibeam bathymetry of the slope environments and inner lagoon of Rose Atoll. This bathymetry data set was used to validate the derived bathymetry from the 2002 satellite data.

Extent Group 1 / Time Frame 3

CC ID: 576928
Time Frame Type: Discrete
Start: 2004
Description:

Benthic images (underwater images) of the seafloor collected by NOAA's NCCOS's Biogeography Team in 2004 via small boat benthic habitat assessments.

Extent Group 1 / Time Frame 4

CC ID: 576929
Time Frame Type: Discrete
Start: 2010-03
Description:

One meter resolution, single beam bathymetry of the slope environments and inner lagoon of Rose Atoll. This bathymetry data set was used to validate the derived bathymetry from the 2009 satellite data.

Extent Group 1 / Time Frame 5

CC ID: 577389
Time Frame Type: Discrete
Start: 2010
Description:

Benthic images (underwater images) of the seafloor collected in 2010 via Towed Diver Surveys (TDS) onboard NOAA's American Samoa Reef Assessment and Monitoring Program (ASRAMP) research cruise.

Extent Group 1 / Time Frame 6

CC ID: 577387
Time Frame Type: Discrete
Start: 2009
Description:

Multispectral WorldView-2 satellite imagery was collected in 2009 by DigitalGlobe and was used to generate the benthic habitat maps for 2010.

Extent Group 1 / Time Frame 7

CC ID: 577388
Time Frame Type: Discrete
Start: 2006
Description:

Benthic images (underwater images) of the seafloor collected in 2006 via Towed Diver Surveys (TDS) onboard NOAA's American Samoa Reef Assessment and Monitoring Program (ASRAMP) research cruise.

Access Information

Security Class: Unclassified
Security Classification System:

Not Applicable

Security Handling Description:

Not Applicable

Data Access Policy:

NOAA Coral Reef Ecosystem Program (CREP) Data Sharing Recommendations, version 9.0 updated August 12, 2015:

CREP welcomes the opportunity to collaborate on research issues contributing to the scientific basis for better management of marine ecosystems. CREP has a very diverse set of field activities that generates large volumes of data using an array of data collection protocols.

The following recommendations are for your consideration as you use this data:

1) Data analyses should take all field exigencies into account. The most effective way to do this would be active collaboration with CREP principal investigators.

2) In all presentations, product releases, or publications using data generated by CREP, proper acknowledgement of both CREP and the individuals responsible for data collection is expected. Citing the DOI (if available) is preferred, a non-DOI example is listed below.

3) If you collect or generate data for the same study areas, CREP requests that you share relevant information on complimentary data collections.

4) Those receiving data are strongly urged to inform the CREP Data Management Team of any errors and discrepancies that are discovered during the course of using these data. They are further urged to bring to the attention of the Team all problems and difficulties encountered in using these data. This information is necessary in order to improve the collections and to facilitate more efficient and economical data processing and retrieval. The users are asked to supply copies of any missing data that may be located, and to provide information as to significant subsets and special aggregations of data that are developed in using the material provided.

Example citation:

"This publication makes use of data products provided by the Coral Reef Ecosystem Program (CREP), Pacific Islands Fisheries Science Center (PIFSC), National Marine Fisheries Service (NMFS), National Oceanic and Atmospheric Administration (NOAA), with funding support from the NOAA Coral Reef Conservation Program (CRCP). The analysis and interpretations presented here are solely that of the current authors.”

Data Access Procedure:

Data can be accessed online via the Pacific Islands Benthic Habitat Mapping Center (PIBHMC) website at http://www.soest.hawaii.edu/pibhmc/cms/data-by-location/american-samoa/rose-atoll/rose-atoll-habitat/.

Data Access Constraints:

None

Data 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.

Metadata Access Constraints:

None

Metadata Use Constraints:

None

Distribution Information

Distribution 1

CC ID: 577390
Download URL: ftp://ftp.soest.hawaii.edu/pibhmc/website/data/amsamoa/benthichabitatlayers/ROS_BHM_ALL.zip
Distributor: Michael W Akridge (2015 - Present)
File Name: ROS_BHM_ALL.zip
Description:

The zip file for Rose Atoll contains 4 files for each habitat map series (Biological Cover Type, and the Percentages of Biological Cover) for each year (2004, 2006, and 2010): a map in PDF and JPG format, the data in Arc ASCII format (ASC), and a layer file (LYR).

File Date/Time: 2017-08-23 00:00:00
File Type: Zip

URLs

URL 1

CC ID: 577391
URL: http://www.soest.hawaii.edu/pibhmc/cms/
URL Type:
Online Resource
File Resource Format: HTML
Description:

NOAA Coral Reef Ecosystem Program, Pacific Islands Benthic Habitat Mapping Center website.

URL 2

CC ID: 577392
URL: https://www.digitalglobe.com/resources/satellite-information
URL Type:
Online Resource
File Resource Format: HTML
Description:

DigitalGlobe satellite information

URL 3

CC ID: 577393
URL: https://products.coastalscience.noaa.gov/collections/benthic/e99us_pac/
URL Type:
Online Resource
File Resource Format: HTML
Description:

NOAA NCCOS data collections in American Samoa, Guam, and the Commonwealth of the Northern Mariana Islands

URL 4

CC ID: 577394
URL: https://www.pifsc.noaa.gov/cred/survey_methods.php#benthic_towed-diver_survey
URL Type:
Online Resource
File Resource Format: HTML
Description:

NOAA Coral Reef Ecosystem Program towed-diver survey methodology used during Pacific Reef Assessment and Monitoring Program missions.

Technical Environment

Description:

Coral Point Count with Excel Extensions (CPCe) was used to classify benthic images (underwater images) of the seafloor. Environment for Visualizing Images (ENVI) was used to analyze the satellite imagery of Rose Atoll. ArcGIS for Desktop's Spatial Analyst Tools, 3D Analyst Tools, Benthic Terrain Modeler (BTM) Tools, Principle Component Analysis (PCA) Tool, and the Maximum Likelihood Classification (MLC) tool were used to derive bathymetry, the eight geomorphological features of the seafloor, and classify the underwater habitat for the three years.

Data Quality

Representativeness:

The thematic maps showing the Dominant Cover Types and Percentages of Dominant Cover Types accurately depict the seafloor habitat of the inner lagoon and outer sloping areas of Rose Atoll for the three years, 2004, 2006, and 2010. The area where the benthic habitat is classified is between 0 to 30 meters, and high-resolution, multispectral satellite imagery was used to fill in any data gaps in the gridded bathymetry derived from multibeam and single beam sonars.

Analytical Accuracy:

Accuracy of multibeam sonar acquired in 2006, which was used to create the 2006 benthic habitat maps:

POSITIONAL ACCURACY:

Horizontal Positioning System: GPS C/A

Horizontal Position Accuracy: 25 meters

VERTICAL POSITIONAL ACCURACY:

Range Resolution of Sonar: Varies with Depth

Raw Resolution of Sonar: Varies with Depth

Vertical Accuracy of Gridded Sonar Product: ~ 1% of water depth

Vertical Accuracy of Derived Bathymetry Product: 5 meter range

Accuracy of single beam sonar acquired in 2012 and 2015, which was used to create the 2010 benthic habitat maps:

POSITIONAL ACCURACY:

Horizontal Position Accuracy: 6.42 m ± 0.02 (2012), 3.01 m ± 0 (2015)

VERTICAL POSITIONAL ACCURACY:

Vertical Accuracy of Gridded Sonar Product: 0.02 m ± 0.01 (2012), 0.65 m ± 0.02 (2015)

Completeness Report:

Benthic habitat classifications were determined for the shallow (0 to 30 meters) area of Rose Atoll for all areas visible in the satellite imagery that were used to derive estimated depths. Some data gaps exist in the bathymetry coverage due to features in the satellite imagery that prevent data derivation such as clouds, waves, etc.

Conceptual Consistency:

Estimated depths generated by the Coral Reef Ecosystem Program (CREP) were processed in the same manner using the same methods for the years 2006 and 2010. The bathymetry data used were processed in the same manner by the Pacific Islands Benthic Habitat Mapping Center (PIBHMC). Seafloor imagery was collected by two different NOAA offices using different methods; however, all imagery included in this project for the purposes of ground-truthing was classified by CREP using the same classification scheme by experienced image analysts that are tested and calibrated.

Quality Control Procedures Employed:

The satellite-derived water depths were validated against available multibeam and single beam bathymetry data for the years 2006 and 2010. Corrections for tide variation and vessel attitude are applied to the multibeam and single beam data, and a CTD (Conductivity, Temperature, and Depth instrument) cast is performed regularly during data collection to correct for variance within the water column. Multibeam and single beam data are tested for internal consistency; however, no effort is made to compare these data to external references or to other published data.

Data Management

Have Resources for Management of these Data Been Identified?: Yes
Approximate Percentage of Budget for these Data Devoted to Data Management: Unknown
Do these Data Comply with the Data Access Directive?: Yes
Is Access to the Data Limited Based on an Approved Waiver?: No
Approximate Delay Between Data Collection and Dissemination: Unknown
Actual or Planned Long-Term Data Archive Location: Other
If World Data Center or Other, Specify: Pacific Islands Benthic Habitat Mapping Center
Approximate Delay Between Data Collection and Archiving: Unknown
How Will the Data Be Protected from Accidental or Malicious Modification or Deletion Prior to Receipt by the Archive?:

University of Hawaii School of Ocean and Earth Science and Technology, NOAA IRC and NOAA Fisheries ITS resources and assets.

Lineage

Lineage Statement:

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.

Process Steps

Process Step 1

CC ID: 576942
Description:

Bathymetry was derived for the shallow water area (0 to 30 meters) of Rose Atoll from the two multispectral satellite images (2002 and 2009) using ENVI and ArcGIS for Desktop tools.

Process Step 2

CC ID: 576943
Description:

Eight geomorphological features of the seafloor were derived from the derived bathymetry from each of the two satellite images using ArcGIS for Desktop Spatial Analyst and 3D Analyst tools.

Process Step 3

CC ID: 576944
Description:

A Principle Component Analysis (PCA) was performed on the eight derived geomorphological features using the PCA tool in ArcGIS for Desktop.

Process Step 4

CC ID: 576945
Description:

The benthic habitat was classified in ArcGIS for Desktop using the MLC tool, the PCA raster data sets from the 2002 and 2009 satellite images, and the benthic images from towed-diver surveys.

Catalog Details

Catalog Item ID: 46886
Metadata Record Created By: Liana K Roberson
Metadata Record Created: 2017-08-10 00:25+0000
Metadata Record Last Modified By: SysAdmin InPortAdmin
Metadata Record Last Modified: 2020-08-03 16:13+0000
Metadata Record Published: 2017-08-25
Owner Org: PIFSC
Metadata Publication Status: Published Externally
Do Not Publish?: N
Metadata Next Review Date: 2018-08-26