Short Citation:
Pacific Islands Fisheries Science Center, 2021: Linkages between reef fish demographics and benthic habitat characteristics in Tutuila, American Samoa and Main Hawaiian Islands, https://www.fisheries.noaa.gov/inport/item/26865.

Item Identification

Title: Linkages between reef fish demographics and benthic habitat characteristics in Tutuila, American Samoa and Main Hawaiian Islands
Short Name: Linkages
Status: Completed
Publication Date: 2015
Abstract:

Benthic habitats play vital roles in the distribution and abundances of marine resources. Understanding how fish populations respond to variability of benthic habitat characteristics is essential for effective coral reef management and monitoring. A pilot study was conducted by NOAA Pacific Islands Fisheries Science Center (PIFSC) Coral Reef Ecosystem Program (CREP) to examine the relationships and linkages between the geomorphological benthic characteristics and fish demographics in Tutuila, American Samoa and the analysis was later expanded to the main Hawaiian Islands.

Geomorphological metrics characterizing benthic habitats including slope, rugosity, curvature, and convexity were derived using best available bathymetry for each area. The fish assemblages and abundance data were collected during Rapid Ecological Assessment (REA) surveys from 2010 to 2016. These fish data were collected according to a stratified random survey design using depth as an environmental correlate. Based on the analysis for Tutuila, American Samoa, preliminary evidence was found that using both depth and convexity to define strata may result in more precise estimates of fish biomass. This analysis was expanded to the main Hawaiian Islands for the subsequent year of the project, and found that including several other metrics in CREP's sampling design can enhance the estimates of fish biomass.

Results and data from the analysis for Tutuila, American Samoa can be accessed online via the Pacific Islands Benthic Habitat Mapping Center website at http://www.soest.hawaii.edu/pibhmc/pibhmc_documentation.htm#other_pubs.

The PIFSC administrative report from the analysis for the main Hawaiian Islands is in review as of Aug 2017 and will be available on the PIFSC website once published at https://www.pifsc.noaa.gov/library/staff_publications.php.

Purpose:

This multi-year project is funded by NOAA Coral Reef Conservation Program (CRCP) and the analysis informs efforts to improve reef monitoring and management, and determines which geomorphological characteristics are most effective for predicting fish populations. It also supports the operational needs of NOAA Coral Reef Ecosystem Program’s field data collection.

Other Citation Details:

Gorospe K, Acoba A. In Review. A sampling design performance analysis examining linkages between reef fish assemblages and benthic morphologies in the main Hawaiian Islands. Pacific Islands Fisheries Science Center Administrative Report H-17-##, ## p. <DOI URL>

Keywords

Theme Keywords

Thesaurus Keyword
CoRIS Discovery Thesaurus Geographic Information > Ecological Characterization
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 > Biosphere > Zoology > Corals > Reef monitoring and assessment
CoRIS Theme Thesaurus EARTH SCIENCE > Biosphere > Zoology > Corals > Reef monitoring and assessment > Mapping
CoRIS Theme Thesaurus EARTH SCIENCE > Biosphere > Zoology > Corals > Reef Monitoring and Assessment > Mapping > geomorphology Mapping
CoRIS Theme Thesaurus EARTH SCIENCE > Oceans > Bathymetry/Seafloor Topography > Bathymetry
CoRIS Theme Thesaurus EARTH SCIENCE > Oceans > Bathymetry/Seafloor Topography > Rugosity
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
CoRIS Theme Thesaurus EARTH SCIENCE > Oceans > Coastal Processes > Coral Reefs > Coral reef ecology > Habitats
CoRIS Theme Thesaurus EARTH SCIENCE > Oceans > Marine Biology > Fish
CoRIS Theme Thesaurus EARTH SCIENCE > Oceans > Marine Biology > Fish > Fish Assemblages
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 014
ISO 19115 Topic Category biota
ISO 19115 Topic Category Oceans
NODC OBSERVATION TYPES THESAURUS derived products
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 Coral Reef Ecosystem Division
None Coral Reef Ecosystem Program
None CRED
None CREP
None Linkages
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 > Tutuila Island (14S170W0016)
CoRIS Place Thesaurus COUNTRY/TERRITORY > United States of America > Hawaii > Hawaii > Hawaii (21N160W0000)
CoRIS Place Thesaurus COUNTRY/TERRITORY > United States of America > Hawaii > Hawaii > Hawaii Island (19N155W0003)
CoRIS Place Thesaurus COUNTRY/TERRITORY > United States of America > Hawaii > Hawaii > Kauai Island (22N159W0001)
CoRIS Place Thesaurus COUNTRY/TERRITORY > United States of America > Hawaii > Hawaii > Molokai Island (21N157W0001)
CoRIS Place Thesaurus COUNTRY/TERRITORY > United States of America > Hawaii > Honolulu > Oahu (21N157W0003)
CoRIS Place Thesaurus COUNTRY/TERRITORY > United States of America > Hawaii > Kauai > Niihau Island (21N160W0001)
CoRIS Place Thesaurus COUNTRY/TERRITORY > United States of America > Hawaii > Maui > Lanai Island (20N156W0002)
CoRIS Place Thesaurus COUNTRY/TERRITORY > United States of America > Hawaii > Maui > Maui Island (20N156W0004)
CoRIS Place Thesaurus COUNTRY/TERRITORY > United States of America > Hawaiian Islands (21N157W0027)
CoRIS Place Thesaurus OCEAN BASIN > Pacific Ocean > American Samoa > Tutuila Island (14S170W0016)
CoRIS Place Thesaurus OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Hawaiian Islands (21N157W0027)
CoRIS Place Thesaurus OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Hawaiian Islands > Hawaii > Hawaii (21N160W0000)
CoRIS Place Thesaurus OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Hawaiian Islands > Hawaii Island > Hawaii Island (19N155W0003)
CoRIS Place Thesaurus OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Hawaiian Islands > Kauai Island > Kauai Island (22N159W0001)
CoRIS Place Thesaurus OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Hawaiian Islands > Lanai Island > Lanai Island (20N156W0002)
CoRIS Place Thesaurus OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Hawaiian Islands > Maui Island > Maui Island (20N156W0004)
CoRIS Place Thesaurus OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Hawaiian Islands > Molokai Island > Molokai Island (21N157W0001)
CoRIS Place Thesaurus OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Hawaiian Islands > Niihau Island > Niihau Island (21N160W0001)
CoRIS Place Thesaurus OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Hawaiian Islands > Oahu Island > Oahu (21N157W0003)
NODC SEA AREA NAMES THESAURUS North Pacific Ocean
NODC SEA AREA NAMES THESAURUS South Pacific Ocean
None Main Hawaiian Islands
None MHI

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: Mixed
Maintenance Frequency: None Planned
Data Presentation Form: Report and source data (CSV files) used in the analysis
Entity Attribute Overview:

The zip file that contains the downloadable data includes all the data (CSV files) used for carrying out the analysis detailed in the final report for the Tutuila pilot analysis. The name of each CSV file includes a geomorphology metric and a number (0, 30, 50, or 100), corresponding to the radius of the spatial averaging buffer (i.e., four different spatial scales) used to generate the metric.

The following geomorphology metrics were examined as part of this study: aspect, convexity, profile curve, rugosity, slope, and surface area. Each CSV file includes site-specific fish survey data reported as biomass (grams per meter squared) of all fish; piscivores, primary consumers, secondary consumers; parrotfishe; and three different size classes (0-20 centimeters, 20-50 centimeters, and greater than 50 centimeters). Site-specific field data such as depth and benthic cover are also included.

Included with the downloadable data is a ReadMe.txt file that includes the definitions for the following columns that are included in the data files: SITE, SITEVISITID, METHOD, OBS_YEAR, REGION, ISLAND, DATE_, REEF_ZONE, DEPTH_BIN, geomorphology metric, PISCIVORE, PLANKTIVORE, PRIMARY, SECONDARY, TotFish, 0_20, 20_50, 50_plus, Parrotfish

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: 215970
Date Effective From: 2015-03
Date Effective To:
Contact (Person): Gorospe, Kelvin D
Address: 1845 Wasp Blvd.
Honolulu, HI 96818
USA
Email Address: kelvin.gorospe@noaa.gov
Phone: (808)725-5488
Contact Instructions:

Email preferred

Distributor

CC ID: 215969
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

Distributor

CC ID: 845751
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.

Metadata Contact

CC ID: 215958
Date Effective From: 2015-03
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: 577411
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: 577410
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: 215957
Date Effective From: 2015-03
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

Process Contact

CC ID: 215935
Date Effective From: 2015-03
Date Effective To:
Contact (Person): Acoba, Tomoko S
Address: 1845 Wasp Blvd.
Honolulu, HI 96818
USA
Email Address: tomoko.acoba@noaa.gov
Phone: (808)725-5448
Business Hours: 8:00 am - 4:00 pm HST
Contact Instructions:

Email preferred

Extents

Currentness Reference: Time frame of data collections and analyses

Extent Group 1

Extent Description:

Initial pilot study for Tutuila, American Samoa

Extent Group 1 / Geographic Area 1

CC ID: 215943
W° Bound: -170.924
E° Bound: -170.495
N° Bound: -14.195
S° Bound: -14.385
Description

Tutuila Island, American Samoa

Extent Group 1 / Time Frame 1

CC ID: 215936
Time Frame Type: Range
Start: 2004
End: 2006
Description:

Temporal coverage of CREP multibeam survey data

Extent Group 1 / Time Frame 2

CC ID: 215937
Time Frame Type: Range
Start: 2010
End: 2015
Description:

Temporal coverage of CREP fish demographic survey data for Tutuila, American Samoa

Extent Group 1 / Time Frame 3

CC ID: 215938
Time Frame Type: Range
Start: 2015-03
End: 2015-09
Description:

Time span of analysis for Tutuila, American Samoa

Extent Group 2

Extent Description:

Expanded study to the Main Hawaiian Islands

Extent Group 2 / Geographic Area 1

CC ID: 574822
W° Bound: -160.4
E° Bound: -154.7
N° Bound: 22.4
S° Bound: 18.8
Description

The main Hawaiian Islands

Extent Group 2 / Time Frame 1

CC ID: 574823
Time Frame Type: Range
Start: 2010
End: 2016
Description:

Temporal coverage of CREP fish demographic survey data for Main Hawaiian Islands

Extent Group 2 / Time Frame 2

CC ID: 574824
Time Frame Type: Range
Start: 2016-12
End: 2017-05
Description:

Time span of analysis for Main Hawaiian Islands

Extent Group 2 / Time Frame 3

CC ID: 577413
Time Frame Type: Discrete
Start: 2013
Description:

LiDAR (Light Detection and Ranging) collected by U.S. Army Corps of Engineers (USACE), JALBTCX (Joint Airborne Lidar Bathymetry Technical Center of eXpertise) used to derive geomorphologic data for the main Hawaiian Islands.

Access Information

Security Class: Unclassified
Security Classification System:

Not applicable

Security Handling Description:

Not applicable

Data Access Policy:

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 website.

Data Access Constraints:

None

Data Use Constraints:

Please cite NOAA Coral Reef Ecosystem Program (CREP) when using the data.

Example:

Pilot study for Tutuila: Coral Reef Ecosystem Program; Pacific Islands Fisheries Science Center (2015). Linkages between reef fish demographics and benthic habitat characteristics in Tutuila, American Samoa. Pacific Islands Benthic Habitat Mapping Center. http://www.soest.hawaii.edu/pibhmc/pibhmc_documentation.htm#other_pubs.

Main Hawaiian Islands: Gorospe K, Acoba A. In Review. A sampling design performance analysis examining linkages between reef fish assemblages and benthic morphologies in the main Hawaiian Islands. Pacific Islands Fisheries Science Center Administrative Report H-17-##, ## p. <DOI URL>

Metadata Access Constraints:

None

Metadata Use Constraints:

None

Distribution Information

Distribution 1

CC ID: 247410
Download URL: ftp://ftp.soest.hawaii.edu/pibhmc/website/webdocs/documentation/Archive_LinkagesRawData.zip
Distributor: Pacific Islands Fisheries Science Center (PIFSC) (2015 - Present)
File Name: Archive_LinkagesRawData.zip
Description:

The ReadMe.txt file describes the CSV files included in the ZIP file. The csv files include all the data used in the pilot analysis detailed in the report for Tutuila. The name of each file includes a geomorphology metric and a number (0, 30, 50, or 100), corresponding to the radius of the spatial averaging buffer (i.e., four different spatial scales) used to generate the metric.

The data dictionary, or definition of each field included in the CSV files is included in the ReadMe.txt file.

File Date/Time: 2015-11-06 00:00:00
File Type: csv (comma-separated values)
File Size: 1.55MB
Compression: Zip

Distribution 2

CC ID: 249792
Download URL: ftp://ftp.soest.hawaii.edu/pibhmc/website/webdocs/documentation/LinkagesReport_FINAL.pdf
Distributor: Pacific Islands Fisheries Science Center (PIFSC) (2015 - Present)
File Name: LinkagesReport_FINAL.pdf
Description:

A report detailing the preliminary analysis to examine linkages between reef fish assemblages and benthic habitat characteristics in Tutuila, American Samoa.

File Date/Time: 2015-10-30 00:00:00
File Type: PDF
File Size: 995 kb

Distribution 3

CC ID: 257468
Download URL: ftp://ftp.soest.hawaii.edu/pibhmc/website/webdocs/documentation/linkages_project_methods_final.pdf
Distributor: Pacific Islands Fisheries Science Center (PIFSC) (2015 - Present)
File Name: linkages_project_methods_final.pdf
Description:

A report detailing the methods to derive benthic terrain metrics and to characterize the benthic landscape using bathymetric data using SAGA software.

File Date/Time: 2015-10-30 00:00:00
File Type: PDF
File Size: 1.6 mb

URLs

URL 1

CC ID: 248887
URL: http://www.soest.hawaii.edu/pibhmc/
Name: Pacific Islands Benthic Habitat Mapping Center (PIBHMC) website
URL Type:
Online Resource
File Resource Format: HTML

URL 2

CC ID: 248888
URL: https://www.fisheries.noaa.gov/pacific-islands/ecosystems/surveying-vast-ocean
Name: PIFSC Ecosystem Sciences
URL Type:
Online Resource
File Resource Format: PHP

URL 3

CC ID: 574825
URL: https://coast.noaa.gov/dataviewer/#/lidar/search/
Name: NOAA DATA Access Viewer
URL Type:
Online Resource
File Resource Format: HTML

Technical Environment

Description:

Data streams were compiled and analyzed by CREP researchers using MS Excel, ArcGIS 10.3, Benthic Terrain Modeler (BTM) 3.0 ArcGIS Extension, System for Automated Geoscientific Analyses (SAGA) 2.1.4, R version 3.1.2.

Data Quality

Representativeness:

Two datasets collected by NOAA Coral Reef Ecosystem Program (CREP) were used for Tutuila, American Samoa. Gridded bathymetry compiled from multibeam data collected in 2004 and 2006 was used to derive geomorphological data including aspect, slope, rugosity, curvature, and convexity. The other dataset is in-situ fish demographic data collected under the Pacific Reef Assessment and Monitoring Program and the NOAA National Coral Reef Monitoring Program between 2010 and 2015. Gridded bathymetry and geomorphological data were then spatially correlated to the fish demographic data.

For the main Hawaiian Islands, LiDAR (Light Detection and Ranging) collected by U.S. Army Corps of Engineers (USACE), JALBTCX (Joint Airborne Lidar Bathymetry Technical Center of eXpertise) in 2013 were used to derive geomorphologic data. In addition to the metrics generated for Tutuila, slope of slope was also derived for the main Hawaiian Islands. The in-situ fish demographic data were collected between 2010 and 2016.

Accuracy:

Geomorphological data inherit the accuracy of the source gridded bathymetry. The attribute and positional accuracies of the gridded multibeam bathymetry for Tutuila, American Samoa are reported in the metadata which can be found at http://www.coris.noaa.gov/metadata/records/html/tutuila_5m.html. The accuracies of the gridded LiDAR data can be found for each island in the main Hawaiian Islands at https://coast.noaa.gov/htdata/lidar1_z/geoid12a/data/. For the fish demographic data, researchers are trained to identify and estimate/measure the size of fish. Both classroom and field training and tests must be completed for all researchers before each round of surveys begins. This training ensures that the surveys are conducted consistently by all researchers within survey efforts and also across periodic survey efforts.

Comparability:

Fish demographic data used for this analysis were collected in 2010, 2012, and 2015 for Tutuila, American Samoa, and 2010, 2012, 2013, 2015 and 2016 for the main Hawaiian Islands. The target precision for these surveys is large enough (e.g., Coefficient of Variation less than 20%) that inter-annual change would likely only be detectable on a decade timescale. Therefore, all survey years used in this analysis are likely comparable, but could easily be addressed by running the analysis separate for all years.

Completeness Measure:

For Tutuila, American Samoa, multibeam bathymetry data were not available for shallow areas where the NOAA Ship Hi'ialakai (a 218-foot research ship) or R/V Acoustic Habitat Investigator (a 25-foot survey launch) were not able to access. Bathymetry derived from multispectral IKONOS satellite imagery was investigated for shallow areas to fill gaps; however, bathymetry derived from IKONOS imagery was not included in the analysis due to uncertainty of the attribute accuracies. Therefore, the fish demographic data collected in areas where multibeam bathymetry data is not available (i.e., shallow areas generally less than 6 meter depths) were omitted from the analysis.

For the main Hawaiian Islands, LiDAR data were not available for Niihau and Kahoolawe islands, and parts of Lanai and Big islands. The fish sites surveyed in the areas where there is no LiDAR data available were removed from the analysis.

Precision:

The target Coefficient of Variation (CV) for fish demographic data reported at the island-level is 20%.

Completeness Report:

This is only a preliminary analysis of the relationship between geomorphological data and fish biomass. For Tutuila, American Samoa, Convexity was chosen for further analysis based on a qualitative assessment. Due to the incompleteness of the bathymetry data in Tutuila, American Samoa described in the “Completeness Measure” section, ideally the analyses should be conducted for a location where bathymetry data is available for shallow areas. For the main Hawaiian Islands, Rugosity, Slope, Slope of Slope and Profile Curvature were chosen for the further analysis.

Quality Control Procedures Employed:

All geomorphological data were derived using SAGA. Some data were cross-checked with data derived using ArcGIS and the Benthic Terrain Modeler (BTM) ArcGIS extension. Sanity checks were performed to examine the process of spatially correlating the gridded bathymetry and geomorphological data with fish demographic 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:

This project involves two primary analyses: one is to derive geomorphological data from gridded bathymetry, and the other is to examine the linkage between derived geomorphological data and fish demographic data from in-situ biological surveys. The analysis was performed for Tutuila, American Samoa during first year of the project, and then for Main Hawaiian Islands during the second year of the project.

Sources

Gorospe KD, Acoba TS. 2017. A survey design performance analysis examining linkages between reef fish assemblages and benthic morphologies in the Main Hawaiian Islands. U.S. Dept. of Commerce, NOAA Technical Memorandum NOAA-TM-NMFS-PIFSC-64, 35 p.

CC ID: 574829
Contact Role Type: Originator
Contact Type: Organization
Contact Name: Pacific Islands Fisheries Science Center
Publish Date: 2017-11-01
Citation URL: https://doi.org/10.7289/V5/TM-PIFSC-64
Citation URL Name: NOAA Institutional Repository

Gorospe, K.D., Acoba, T., Rooney, J. 2015. A preliminary analysis examining linkages between reef fish assemblages and benthic habitat characteristics in Tutuila, American Samoa. Internal Report

CC ID: 257467
Contact Role Type: Publisher
Contact Type: Organization
Contact Name: Pacific Islands Fisheries Science Center
Publish Date: 2015-10-01
Citation URL: http://www.soest.hawaii.edu/pibhmc/pibhmc_documentation.htm#other_pubs
Citation URL Name: Pacific Islands Benthic Habitat Mapping Center website

National Coral Reef Monitoring Program: Stratified Random Surveys (StRS) of Reef Fish, including Benthic Estimate Data of American Samoa

CC ID: 912832
Contact Role Type: Originator
Contact Type: Organization
Contact Name: Pacific Islands Fisheries Science Center
Extent Type: Discrete
Extent Start Date/Time: 2015
Citation URL: https://www.fisheries.noaa.gov/inport/item/34520
Citation URL Name: NOAA Fisheries InPort
Citation URL Description:

Enterprise Data Management Tool

Source Contribution:

2015 fish survey data for American Samoa

National Coral Reef Monitoring Program: Stratified Random Surveys (StRS) of Reef Fish, including Benthic Estimate Data of the Hawaiian Archipelago

CC ID: 215941
Contact Role Type: Originator
Contact Type: Organization
Contact Name: Pacific Islands Fisheries Science Center, PIFSC
Extent Type: Range
Extent Start Date/Time: 2013
Extent End Date/Time: 2016
Citation URL: https://www.fisheries.noaa.gov/inport/item/24447
Citation URL Name: NOAA Fisheries InPort
Citation URL Description:

Enterprise Data Management Tool

Source Contribution:

2013 and 2016 fish survey data for the main hawaiian islands

Pacific Islands Benthic Habitat Mapping Center (PIBHMC), Coral Reef Ecosystem Division (CRED), Pacific Islands Fisheries Science Center (PIFSC), National Marine Fisheries Service (NMFS), National Oceanic and Atmospheric Administration (NOAA). Gridded bathymetry of Tutuila Island, American Samoa, South Pacific.

CC ID: 215942
Contact Role Type: Publisher
Contact Type: Organization
Contact Name: Pacific Islands Fisheries Science Center, PIFSC
Publish Date: 2006-09-30
Extent Type: Range
Extent Start Date/Time: 2004
Extent End Date/Time: 2006
Citation URL: http://www.soest.hawaii.edu/pibhmc/pibhmc_amsamoa_tutuila_bathy.htm
Citation URL Name: Pacific Islands Benthic Habitat Mapping Center

Pacific Reef Assessment and Monitoring Program: Stratified Random Surveys (StRS) of Reef Fish, including Benthic Estimate Data at Coral Reef Sites across the Pacific Ocean from 2007 to 2012

CC ID: 912833
Contact Role Type: Originator
Contact Type: Organization
Contact Name: Pacific Islands Fisheries Science Center
Extent Type: Range
Extent Start Date/Time: 2010
Extent End Date/Time: 2012
Citation URL: https://www.fisheries.noaa.gov/inport/item/34515
Citation URL Name: NOAA Fisheries InPort
Citation URL Description:

Enterprise Data Management Tool

Source Contribution:

Fish survey data from 2010-2012 for American Samoa and the Hawaiian Archipelago.

Watkins, R. 2015. Terrain Metrics and landscape Characterization from Bathymetric Data; SAGA GIS Methods and Command Sequences. Internal Report

CC ID: 247430
Contact Role Type: Originator
Contact Type: Organization
Contact Name: Pacific Islands Fisheries Science Center
Publish Date: 2015-11-06
Citation URL: http://www.soest.hawaii.edu/pibhmc/pibhmc_documentation.htm#auto_process
Citation URL Name: Pacific Islands Benthic Habitat Mapping Center

Process Steps

Process Step 1

CC ID: 249782
Description:

Source gridded multibeam bathymetry data for Tutuila, American Samoa.

Process Contact: Pacific Islands Fisheries Science Center (PIFSC)
Phone (Voice): 808-725-5300
Source: Pacific Islands Benthic Habitat Mapping Center (PIBHMC), Coral Reef Ecosystem Division (CRED), Pacific Islands Fisheries Science Center (PIFSC), National Marine Fisheries Service (NMFS), National Oceanic and Atmospheric Administration (NOAA). Gridded bathymetry of Tutuila Island, American Samoa, South Pacific.

Process Step 2

CC ID: 247428
Description:

The first step was to generate a series of geomorphology benthic variables from multibeam bathymetry for the nearshore environment of Tutuila, American Samoa using open source GIS software, System for Automated Geoscientific Analyses (SAGA) 2.1.4. Six geomorphology variables were derived for this study. Detailed descriptions of the tools used are available in Watkins (2015).

Slope, aspect and profile curvature were derived from the multibeam bathymetry with the Slope, Aspect, Curvature tool in SAGA using the default option of the nine parameter 2nd order polynomial method.

Real surface area was derived using the Real Surface Area tool in SAGA, which was then also used to calculate rugosity, a measure of roughness, derived by dividing real surface area by the geometric surface area.

Terrain surface convexity is measured as the percentage of convex-upward cells within a constant radius of ten cells. The terrain surface convexity tool in SAGA was used to derive this variable.

Source: Watkins, R. 2015. Terrain Metrics and landscape Characterization from Bathymetric Data; SAGA GIS Methods and Command Sequences. Internal Report

Process Step 3

CC ID: 247463
Description:

For each of the benthic geomorphology variables, site-specific values were extracted for each fish survey location in Tutuila using the Sample tool available in Esri's ArcToolbox. In addition, geomorphology values were averaged across all cells within the available data within a radius of 30, 50, and 100 meters from the fish survey site. The Buffer tool in Esri's ArcToolbox was used to create the zone shapefile with the radius of 30, 50, and 100 meters of each fish survey site. The Zonal Statistics tool in Esri's ArcToolbox was then used to generate the mean value for each geomorphology variable for each site.

Process Contact: Acoba, Tomoko S
Phone (Voice): (808)725-5448
Email Address: tomoko.acoba@noaa.gov

Process Step 4

CC ID: 247464
Description:

A total of nine fish biomass metrics were derived from NOAA Coral Reef Ecosystem Program Rapid Ecological Assessment (REA) fish surveys for each survey site. The metrics include four trophic groups (primary consumers, secondary consumers, planktivores, piscivores), three size classes (0-20 centimeters; 20-50 centimeters; and 50+ centimeters), as well as parrotfishes, and total fish biomass.

Process Contact: Pacific Islands Fisheries Science Center (PIFSC)
Phone (Voice): 808-725-5300
Source: National Coral Reef Monitoring Program: Stratified Random Surveys (StRS) of Reef Fish, including Benthic Estimate Data of the Hawaiian Archipelago

Process Step 5

CC ID: 255592
Description:

Scatterplots and trend lines were created to reveal patterns between each fish biomass metric and each of the geomorphology metrics. Based on this, convexity was chosen as a promising geomorphology metric that could potentially be informative for surveying fish biomass. Using the scatterplots and trend lines as a guide, bin boundaries for high, moderate, and low convexity were selected.

Process Contact: Gorospe, Kelvin D
Phone (Voice): (808)725-5488
Email Address: kelvin.gorospe@noaa.gov
Source: Gorospe, K.D., Acoba, T., Rooney, J. 2015. A preliminary analysis examining linkages between reef fish assemblages and benthic habitat characteristics in Tutuila, American Samoa. Internal Report

Process Step 6

CC ID: 255593
Description:

By combining the current NOAA Coral Reef Ecosystem Program sampling design's depth strata (shallow 0-6 meter depth, moderate 6-18 meter depth, deep 18-30 meter depth) and the new convexity strata, total reef area for each strata combination (e.g., deep and low convexity, deep and moderate convexity, deep and high convexity, moderate depth and low convexity, etc.) was calculated using ArcGIS.

Process Contact: Acoba, Tomoko S
Phone (Voice): (808)725-5448
Email Address: tomoko.acoba@noaa.gov
Source: Gorospe, K.D., Acoba, T., Rooney, J. 2015. A preliminary analysis examining linkages between reef fish assemblages and benthic habitat characteristics in Tutuila, American Samoa. Internal Report

Process Step 7

CC ID: 255594
Description:

Sampling design performance was evaluated for each fish biomass metric, by calculating n* (i.e., the number of samples required to attain a target coefficient of variation). This was done for two sampling designs: (1) using depth as a covariate for stratification and (2) using a combination of depth and convexity as covariates for stratification.

Process Contact: Gorospe, Kelvin D
Phone (Voice): (808)725-5488
Email Address: kelvin.gorospe@noaa.gov
Source: Gorospe, K.D., Acoba, T., Rooney, J. 2015. A preliminary analysis examining linkages between reef fish assemblages and benthic habitat characteristics in Tutuila, American Samoa. Internal Report

Process Step 8

CC ID: 574826
Description:

Steps 1-3 were repeated for the main Hawaiian Islands with the LiDAR data acquired by U.S. Army Corps of Engineers (USACE), JALBTCX (Joint Airborne Lidar Bathymetry Technical Center of eXpertise). The gridded LiDAR data were downloaded from the NOAA Data Access Viewer (https://coast.noaa.gov/dataviewer/#/). In addition to the geomorphologic metrics derived for Tutuila, American Samoa, Slope of Slope was also derived for the main Hawaiian Islands. Due to the large file size of the LiDAR data, the method to calculate the mean and standard deviation values of the metrics for each site was modified by calculating focal mean and standard deviation using Focal Statistics tool in ArcToolbox at radius of 30m, 50m and 100m before assigning value to each site.

Source: Gorospe KD, Acoba TS. 2017. A survey design performance analysis examining linkages between reef fish assemblages and benthic morphologies in the Main Hawaiian Islands. U.S. Dept. of Commerce, NOAA Technical Memorandum NOAA-TM-NMFS-PIFSC-64, 35 p.

Process Step 9

CC ID: 574827
Description:

Steps 4-5 were repeated for the fish demographic data collected for the main Hawaiian Islands between 2010-2016 with the associated geomorphologic metrics derived from LiDAR. It is found that the means of rugosity, slope, and slope of slope, and standard deviation of profile curvature has correlations with fish biomass metrics, and further analysed to derive n* described in Steps 6-7.

Source: Gorospe KD, Acoba TS. 2017. A survey design performance analysis examining linkages between reef fish assemblages and benthic morphologies in the Main Hawaiian Islands. U.S. Dept. of Commerce, NOAA Technical Memorandum NOAA-TM-NMFS-PIFSC-64, 35 p.

Process Step 10

CC ID: 574828
Description:

To demonstrate the improvement of the sampling design efficiency with the geomorphological metrics derived from LiDAR, the n* was also calculated with the depth and its geomorphological information from the 50-m grid maps used in the current NCRMP sampling design.

Source: Gorospe KD, Acoba TS. 2017. A survey design performance analysis examining linkages between reef fish assemblages and benthic morphologies in the Main Hawaiian Islands. U.S. Dept. of Commerce, NOAA Technical Memorandum NOAA-TM-NMFS-PIFSC-64, 35 p.

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Catalog Details

Catalog Item ID: 26865
Metadata Record Created By: Tomoko S Acoba
Metadata Record Created: 2015-09-02 18:43+0000
Metadata Record Last Modified By: SysAdmin InPortAdmin
Metadata Record Last Modified: 2020-08-03 16:13+0000
Metadata Record Published: 2019-05-30
Owner Org: PIFSC
Metadata Publication Status: Published Externally
Do Not Publish?: N
Metadata Next Review Date: 2020-05-30