gov.noaa.nmfs.inport:39285
eng
UTF8
dataset
National Centers for Coastal Ocean Science
resourceProvider
NCCOS Scientific Data Coordinator
NCCOS.data@noaa.gov
pointOfContact
2024-02-29T00:00:00
ISO 19115-2 Geographic Information - Metadata Part 2 Extensions for imagery and gridded data
ISO 19115-2:2009(E)
Guam and Commonwealth of the Northern Mariana Islands (CNMI) Benthic Habitat Maps Prepared by Visual Interpretation from IKONOS satellite imagery procured by NOAA
cnmi_benthic_parent
2004
publication
NOAA/NMFS/EDM
39285
https://www.fisheries.noaa.gov/inport/item/39285
WWW:LINK-1.0-http--link
Full Metadata Record
View the complete metadata record on InPort for more information about this dataset.
information
Battista, Tim
tim.battista@noaa.gov
principalInvestigator
http://ccma.nos.noaa.gov/ecosystems/coralreef/us_pac_terr/data/
WWW:LINK-1.0-http--link
Citation URL
Online Resource
download
http://ccma.nos.noaa.gov/ecosystems/coralreef/us_pac_terr/data/habitats.aspx
WWW:LINK-1.0-http--link
Citation URL
Online Resource
download
This project is a cooperative effort among the National Ocean Service, National Centers for Coastal Ocean Science, Center for Coastal Monitoring and Assessment; the University of Hawaii; BAE Systems Spectral Solutions; and Analytical Laboratories of Hawaii, LLC. The goal of the work was to map the coral reef habitats of American Samoa, Guam and the Commonwealth of the Northern Mariana Islands by visual interpretation and manual delineation of IKONOS satellite imagery. A two tiered habitat classification system was tested and implemented in this work. It integrates geomorphologic reef structure and biological cover into a single scheme and subsets each into detail. It also includes thirteen zones. Benthic features were mapped that covered an area of 149.2 square kilometers of which 37 were unconsolidated sediment and 112 were coral reef and hard bottom.
The National Ocean Service is conducting research to digitally map biotic resources and coordinate a long-term monitoring program that can detect and predict change in U.S. coral reefs, and their associated habitats and biological communities. Precise mapping of benthic habitats is essential for developing management strategies that balance the protection of these habitats with their use. Accurate maps of these areas enable resource managers to make informed decisions about the use and protection of the resources.
completed
NCCOS Scientific Data Coordinator
NCCOS.data@noaa.gov
pointOfContact
NCCOS Scientific Data Coordinator
NCCOS.data@noaa.gov
custodian
notPlanned
coral reef
coralline algae
cover
environmental monitoring
habitat
reef
structure
submerged aquatic vegetation
unconsolidated sediments
zone
theme
Agrihan
Aguijan
Alamagan
Anathan
Asuncion
CNMI
Commonwealth of the Northern Mariana Islands
Commonwealth of the Northern Mariana Islands and Guam
Farallon de Medinilla
Farallon de Pajaros
Guam
Guguan
Mariana Archipelago
Maug
Pagan
Rota
Saipan
Sarigan
Tinian
United States
place
DOC/NOAA/NOS/NCCOS > National Centers for Coastal Ocean Science, National Ocean Service, NOAA, U.S. Department of Commerce
dataCentre
Global Change Master Directory (GCMD) Data Center Keywords
2017-04-24
publication
8.5
Pac_Terr
project
InPort
otherRestrictions
Cite As: National Centers for Coastal Ocean Science, [Date of Access]: Guam and Commonwealth of the Northern Mariana Islands (CNMI) Benthic Habitat Maps Prepared by Visual Interpretation from IKONOS satellite imagery procured by NOAA [Data Date Range], https://www.fisheries.noaa.gov/inport/item/39285.
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.
otherRestrictions
Access Constraints: None
otherRestrictions
Use Constraints: Not for navigation
otherRestrictions
Distribution Liability: These data were prepared by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, make any warranty, expressed or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed in this report, or represents that its use would not infringe privately owned rights. Reference therein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. Any views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof. Although all data have been used by NOAA, no warranty, expressed or implied, is made by NOAA as to the accuracy of the data and/or related materials. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by NOAA in the use of these data or related materials.
unclassified
NOAA Data Management Plan (DMP)
NOAA/NMFS/EDM
39285
https://www.fisheries.noaa.gov/inportserve/waf/noaa/nos/nccos/dmp/pdf/39285.pdf
WWW:LINK-1.0-http--link
NOAA Data Management Plan (DMP)
NOAA Data Management Plan for this record on InPort.
information
crossReference
vector
eng; US
environment
oceans
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 1; ESRI ArcCatalog 9.0.0.535
144.599648
146.075495
13.22229
20.568301
| Currentness: Ground Condition
2002
2004
Information for this metadata was taken from the individual metadata records for the Pacific Territories Benthic Habitat Mapping Project which can be accessed at http://ccma.nos.noaa.gov/ecosystems/coralreef/us_pac_terr/. For more information refer to the metadata record for the data layer of interest
false
eng
false
Mariana Archipelago Benthic Habitat Shapefile Attribute Table
2017-04-17
publication
Shapefile
NCCOS Scientific Data Coordinator
NCCOS.data@noaa.gov
distributor
http://ccma.nos.noaa.gov/ecosystems/coralreef/us_pac_terr/data/habitats.aspx
WWW:LINK-1.0-http--link
http://ccma.nos.noaa.gov/ecosystems/coralreef/us_pac_terr/data/habitats.aspx
Downloadable Data
download
dataset
Accuracy
A statistically robust field data set was collected to assess the thematic accuracy of the map products. A random stratified sampling method was implemented to select field sites to conduct this test. Each site was navigated to using a Trimble Geo Explorer 3 GPS data logger, and positional data was acquired. A total of 1113 GPS waypoints were occupied and benthic characterizations conducted for the purpose of accuracy assessment. Areas that were obscured by cloud cover or where other environmental conditions such as glint of turbidity prevented visual interpretation of the benthic habitats were assigned an attribute of "unknown". Field observations that fell in polygons designated "unknown" were not included in the statistical analysis. During this survey, 5 of the 1113 field observations were excluded for this reason and 1108 observations were used in the accuracy assessment.A statistical analysis that generated a Tau statistic was preformed. The Tau statistic for the major classes exceeded 0.85 and for detailed classes exceeded 0.75. Overall thematic accuracy was established as 98.7% and 92.6% for the major structure and cover classes and 87.8% and 81% for the detailed classes respectively for the entire Mariana Archipelago.
Horizontal Positional Accuracy
RMS from digitized output was determined using the ESRI RMEer2 extension and shown to be less than 1m when conducted at 1:6000 scale.
Completeness Report
NOAA supplied georeferenced imagery to Analytical Laboratories of Hawaii through BAE Systems Spectral Solutions. Delineation of all habitat boundaries was conducted with the image scale at 1:6,000. This ensures that the level of detail produced by the photo interpreter is uniform throughout the project. Also, NOAA has shown from similar mapping efforts in the Caribbean and Florida Keys that little additional information is gained from having the image at a smaller scale and the labor intensity increased significantly. The minimum mapping unit (MMU) for identifying habitats or features was 1 acre. The software utilized in this project was designed to alert the photo interpreter each time a polygon was drawn smaller than the MMU. When this occurred the photo interpreter has the choice whether to include the polygon in the data set. Only in areas where local coral reef managers expressed interest in specific map classes or in Marine Protected Areas were polygons of smaller then the MMU allowed.
Conceptual Consistency
All mapping was conducted from orthorectified IKONOS satellite imagery provided by NOS prior to map production. IKONOS satellite imagery was corrected for atmospheric and water column effects, color balanced, pan sharpened and deglinted. During the digitizing process, image stretches and manipulating image contrast, brightness and color balance were performed in the ArcView Image Analysis Extension to enhance features in the processed imagery. GIS topologic quality was established by executing ArcView extension routines that check for: overlapping polygons, multipart polygons, sliver polygons and void polygons. Additionally checks for adjacent polygons with the same habitat attributes were completed. All errors were identified and corrected. This file is believed to be logically consistent.
Benthic habitat maps were digitized by delineating habitat boundaries from georeferenced orthorectified IKONOS satellite imagery loaded into ArcView 3.3 GIS software with the Image Analysis and NOAA Coral Reef Habitat Digitizing extensions both activated. Digitizing was conducted using heads-up on computer screen methods with the minimum mapping unit (MMU) set to 1 acre and the image scale at 1:6,000. All IKONOS imagery was processed by NOS prior to map production. The imagery was corrected for atmospheric and water column effects, pan sharpened and deglinted. During the digitizing process, images were stretched and contrast, brightness and color balance were modified using the Arc View Image Analysis Extension to enhance features in the processed imagery. A first draft map was completed and features in the imagery where uncertainties existed, due to confusing or difficult to interpret signatures, were identified for future ground validation effort. An ArcView GIS point theme was generated with points positioned on the features of uncertain habitat type or along transects though gradients between habitat types. The GIS points were converted to GPS waypoints using Trimble Pathfinder Software and were navigated to in the field using a Trimble GeoExplorer 3 GPS data logger.A benthic habitat characterization was conducted at each site by snorkeling, free diving, or where water depth and clarity permitted, by observation from the surface . GPS data were collected at each location and site ID, depth, habitat type, zone and the method used to make the assessment were recorded. A second draft of the map was generated incorporating these ground validation data.
2004-01-01T00:00:00
Source Contribution: This document identified the zone, structure and biological cover types attributed in the data set | Source Geospatial Form: document | Type of Source Media: Report
Classification Scheme for Benthic Habitats of the Pacific
2003-01-01
publication
M.S. Coyne
http://ccma.nos.noaa.gov/ecosystems/coralreef/us_pac_terr/html/methods.aspx
WWW:LINK-1.0-http--link
Source Citation URL
Source Citation URL
information
2003
Source Contribution: This ArcView extension was used to digitize and attribute benthic zones, structure and biological cover of this map. | Type of Source Media: computer program
Coral Reef Digitizing Extension
2003-01-01
publication
Ken Buja
http://coastalscience.noaa.gov/projects/detail?key=203
WWW:LINK-1.0-http--link
Source Citation URL
Source Citation URL
information
2003
Source Contribution: Used to identify and digitize benthic habitats for the Mariana Archipelago. | Source Geospatial Form: remote-sensing image | Type of Source Media: CD-ROM
IKONOS Satellite Imagery
2003-01-01
publication
Space Imaging Inc.
http://www.spaceimaging.com
WWW:LINK-1.0-http--link
Source Citation URL
Source Citation URL
information
2001
2003