gov.noaa.nmfs.inport:39402
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)
Benthic Habitats of the Main Hawaiian Islands Prepared by Visual Interpretation from Remote Sensing Imagery Collected by NOAA Year 2000: Niihau
niihau_benthic
2002-05-24
publication
NOAA/NMFS/EDM
39402
https://www.fisheries.noaa.gov/inport/item/39402
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/products/biogeography/hawaii_cd/data/
WWW:LINK-1.0-http--link
Citation URL
Online Resource
download
http://coastalscience.noaa.gov/datasets/ccma/biogeo/hawaii/shapes/niihau.zip
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, and Analytical Laboratories of Hawaii, LLC. The goal of the work was to develop coral reef mapping methods and compare benthic habitat maps generated by photointerpreting georeferenced color aerial photography, hyperspectral and IKONOS satellite imagery. Twenty-seven distinct benthic habitat types within eleven zones were mapped directly into a GIS system using visual interpretation of orthorectified aerial photographs and hyperspectral imagery. Benthic features were mapped that covered an area of 790 km^2. In all, 204 km^2 of unconsolidated sediment, 171 km^2 of submerged vegetation, and 415 km^2 of coral reef and colonized hardbottom were mapped.
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.
Miles Anderson, Analytical Laboratories of Hawaii
completed
NCCOS Scientific Data Coordinator
NCCOS.data@noaa.gov
pointOfContact
NCCOS Scientific Data Coordinator
NCCOS.data@noaa.gov
custodian
notPlanned
OceanCommunity
theme
Geospatial Platform
Environmental Monitoring
theme
NOS Data Explorer Topic Category
AURORA hyperspectral imagery
color aerial photography
coral reef
coralline algae
environmental monitoring
habitat
oceans
reef
submerged aquatic vegetation
unconsolidated sediments
zone
theme
Hawaii
Niihau
U.S. Exclusive Economic Zone
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
Hawaii_2000
project
InPort
otherRestrictions
Cite As: National Centers for Coastal Ocean Science, [Date of Access]: Benthic Habitats of the Main Hawaiian Islands Prepared by Visual Interpretation from Remote Sensing Imagery Collected by NOAA Year 2000: Niihau [Data Date Range], https://www.fisheries.noaa.gov/inport/item/39402.
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: The National Oceanic and Atmospheric Administration (NOAA) National Centers for Coastal Ocean Science (NCCOS) produced this data CD-ROM. NCCOS Biogeography Program does not guarantee the accuracy of the geographic features or attributes. Please see the metadata records for each data set for complete information on the source, limitations, and proper use.
unclassified
NOAA Data Management Plan (DMP)
NOAA/NMFS/EDM
39402
https://www.fisheries.noaa.gov/inportserve/waf/noaa/nos/nccos/dmp/pdf/39402.pdf
WWW:LINK-1.0-http--link
NOAA Data Management Plan (DMP)
NOAA Data Management Plan for this record on InPort.
information
crossReference
eng; US
environment
oceans
Microsoft Windows 2000 Version 5.0 (Build 2195) Service Pack 3; ESRI ArcCatalog 8.2.0.700
-160.2967
-160.0577
21.7906
22.0401
| Currentness: Ground Condition
2001
2002
false
eng
false
Niihau.dbf
2017-04-17
publication
Shapefile
NCCOS Scientific Data Coordinator
NCCOS.data@noaa.gov
distributor
http://coastalscience.noaa.gov/datasets/ccma/biogeo/hawaii/shapes/niihau.zip
WWW:LINK-1.0-http--link
http://coastalscience.noaa.gov/datasets/ccma/biogeo/hawaii/shapes/niihau.zip
Downloadable Data
download
dataset
Accuracy
The purpose of this study was to determine the relative accuracy of maps generated from the photointerpretation of three sources of remotely sensed imagery. Four test areas were identified based on the diversity of the habitat types and to ensure that all benthic habitat types throughout the Hawaiian Islands were represented. A random stratified sampling method was implemented to select field sites to test the map accuracy. Each site was navigated to using a Trimble Geo Explorer 3 GPS data logger, and positional data was acquired. The three types of imagery were acquired during different days with different weather conditions. The habitat type for the portions of the test area that were not interpretable due to cloud cover, glint or water quality were classified as unknown. The accuracy assessment points that fell within polygons with the habitat type of unknown were not included in the accuracy analysis. As a result, the total number of accuracy assessment points varies between the imagery types within a single area. Two statistical analyses (Kappa and Tau test and the Z score) were performed. The Kappa and Tau statistic for the major habitat types showed that the percent overall accuracy of photointerpretation of color aerial photography, IKONOS satellite and hyperspectral imagery is 90.7%, 86.5% and 89% respectively. The Z score showed that at the 90% confidence level there was no significant difference between data gathered from the three imagery sources. At the 95% confidence level there is a significant difference in the quality between aerial photographs and IKONOS satellite imagery. The accuracy assessments tests showed that the ability to generate benthic habitat maps with an overall accuracy of 90% at the 95% confidence interval is reaching a threshold using imagery with three meter pixel size allowing for spectral enhancement of the imagery with reduced resolution.
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. 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 photointerpreter 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 for visual photointerpretation. The software utilized in this project was designed to alert the photointerpreter each time a polygon was drawn smaller than the MMU. When this occurred the photointerpreter has the choice whether to include the polygon in the data set.
Conceptual Consistency
All three types of remotely sensed imagery were processed by NOS prior to map production. Individual color aerial photographs were georeferenced and mosaicked. The hyperspectral data composed of 72 ten nm wide bands were subsetted to three band composites that enhanced deep and shallow water features. IKONOS satellite imagery was corrected for atmospheric and water column effects. 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 imagery loaded into ArcView 3.2 GIS software with the Image Analysis and NOAA Coral Reef Habitat Digitizing extensions both activated. Digitizing was conducted using heads-up computer screen methods with the minimum mapping unit (MMU) set to 1 acre and the image scale at 1:6,000. All three types of remotely sensed imagery were processed by NOS prior to map production. Individual color aerial photographs were georeferenced and mosaicked. The hyperspectral data composed of 72 ten nm wide bands were subsetted to three band composites that enhanced deep and shallow water features. IKONOS satellite imagery was corrected for atmospheric and water column effects. During the digitizing process, image stretched and manipulating image contrast, brightness and color balance were performed in the ArcView 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 via observations from the surface where water depth and clarity permitted. GPS data were collected at each location and site ID, depth, habitat type, zone and the method used to make the assessment were recorded. The ground validation data were incorporated into the second draft of each map.
2001-10-10T00:00:00
Source Contribution: Used to identify and digitize benthic habitats for the eight main Hawaiian Islands. | Source Geospatial Form: remote-sensing image | Type of Source Media: CD-ROM
AURORA Hyperspectral Imagery
2000-01-01
publication
Advanced Power Technologies Inc.
2000
Source Contribution: This document identified the zone and habitat types attributed in the data set | Source Geospatial Form: document | Type of Source Media: Report
Classification Scheme for Benthic Habitats: Main Eight Hawaiian Islands
2002-01-01
publication
M.S. Coyne
http://www.geoeye.com
WWW:LINK-1.0-http--link
Source Citation URL
Source Citation URL
information
2002
Source Contribution: Used to identify and digitize benthic habitats for the eight main Hawaiian Islands. | Source Geospatial Form: remote-sensing image | Type of Source Media: CD-ROM
24000
Color Aerial Photography
2000-01-01
publication
National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), National Geodetic Survey (NGS)
http://www8.nos.noaa.gov/biogeo_public/aerial/search.aspx
WWW:LINK-1.0-http--link
Source Citation URL
Source Citation URL
information
2000
Source Contribution: This ArcView extension was used to digitize and attribute benthic zones and habitats for the eight main Hawaiian Islands. | Type of Source Media: computer program
Coral Reef Digitizing Extension
2002-01-01
publication
Ken Buja
http://ccma.nos.noaa.gov/products/biogeography/digitizer/
WWW:LINK-1.0-http--link
Source Citation URL
Source Citation URL
information
2002
Source Contribution: Used to identify and digitize benthic habitats for the eight main Hawaiian Islands. | Source Geospatial Form: remote-sensing image | Type of Source Media: CD-ROM
IKONOS Satellite Imagery
2000-01-01
publication
Space Imaging Inc.
http://www.geoeye.com
WWW:LINK-1.0-http--link
Source Citation URL
Source Citation URL
information
2000