Short Citation:
Pacific Islands Fisheries Science Center, 2021: National Coral Reef Monitoring Program: Towed-diver Surveys of Benthic Habitat, Key Benthic Species, and Marine Debris Sightings of the Pacific Remote Island Areas since 2014, https://www.fisheries.noaa.gov/inport/item/5567.

Item Identification

Title: National Coral Reef Monitoring Program: Towed-diver Surveys of Benthic Habitat, Key Benthic Species, and Marine Debris Sightings of the Pacific Remote Island Areas since 2014
Short Name: NCRMP: Benthic Towed-diver Surveys PRIAs
Status: Completed
Publication Date: 2016
Abstract:

The towed-diver method is used to conduct benthic surveys, assessing large-scale disturbances (e.g., bleaching) and quantifying benthic components such as habitat complexity/type and the general distribution and abundance patterns of live coral, crustose coralline algae (CCA), macroalgae, and macroinvertebrates. Surveys are conducted in the Hawaiian and Mariana Archipelagos, American Samoa, and the Pacific Remote Island Areas as part of the NOAA National Coral Reef Monitoring Program (NCRMP). A suitable method for assessing relatively large areas of reef habitat, the method involves towing a pair of SCUBA divers—one benthic and one fish—behind a small boat for approximately 50 min following the ~15-m depth contour and covering about 2–3 km of habitat. Each diver is equipped with a towboard and attempts to maintain a constant elevation above the surface of the reef (~1 m) for the duration of the survey. A complete towed-diver survey is divided into 10, 5-min segments, with visual observations recorded by 5-min segment.

The visual estimate data provided in this dataset were collected during towed-diver surveys which includes percentage cover of total live hard corals, stressed hard corals, soft corals, sand, coralline algae, and macroalgae, and the number of individual macroinvertebrates (crown of thorns starfish (COTS), sea urchins, and giant clams). Benthic habitat complexity and type data are also collected as part of the survey with the following habitat type categories: continuous reef, spur and groove, patch reefs, rock boulders, pavement, rubble flat, sand flats, pinnacle, and wall.

The data were collected around the Pacific Remote Island Areas as part of the NOAA Pacific Islands Fisheries Science Center (PIFSC), Coral Reef Ecosystem Program (CREP) led missions since 2014. These data can be accessed online via the NOAA National Centers for Environmental Information (NCEI) Ocean Archive.

Purpose:

The National Coral Reef Monitoring Program (NCRMP) details an integrated ecosystem approach to provide a consistent flow of information to assess and report the status and trends of environmental conditions, living reef resources, and the people and processes that interact with coral reef ecosystems. Although the scope of NCRMP is broad, it is intended to assess the status of coral reef ecosystems and their conditions throughout U.S. States and Territories and provide a steady and comprehensive analytical context to gauge changes in conditions at the sub-jurisdictional scale of an island or atoll.

Through the implementation of the NCRMP, NOAA is able to clearly and concisely communicate results of national-scale monitoring to Federal, State, and Territorial policy makers, resource managers, scientists, and the public on a periodic basis.

Other Citation Details:

Lino K, Asher J, Ferguson M, Gray A, McCoy K, Timmers M, Vargas-Ángel B (2018) Ecosystem Sciences Division standard operating procedures: data collection for towed-diver benthic and fish surveys. Pacific Islands Fish. Sci. Cent., Natl. Mar. Fish. Serv., NOAA, Honolulu, HI 96818-5007. Pacific Islands Fish. Sci. Cent. Admin. Rep. H-18-02, 76 p.

Supplemental Information:

The National Coral Reef Monitoring Program (NCRMP) is a framework for conducting sustained observations of biological, climate, and socioeconomic indicators at 10 priority coral reefs across the U.S. and its territories. This integrated approach will consolidate monitoring of coral reefs under a uniform method in the Pacific, Atlantic, Caribbean, and the Gulf of Mexico for the first time. NCRMP is funded by the CRCP and supported by NOAA Fisheries, NOAA National Centers for Coastal Ocean Science (NCCOS), and many other partners. The Coral Reef Ecosystem Program (CREP) at NOAA Fisheries is leading biological monitoring in the U.S. Pacific Islands Region.

The biological component of NCRMP in the Pacific provides a triennial ecological characterization at a broad spatial scale of general reef condition for reef fishes, corals and benthic habitat (i.e., fish species composition/density/size, benthic cover, and coral density/size/condition). Each year, CREP scientists work closely with CRCP and local partners to collect biological data on fish populations and coral reef communities from strategically selected sites during Reef Assessment and Monitoring Program (RAMP) missions. Innovative analysis techniques are then used to develop products that give fellow scientists, managers, decision makers and the public a better understanding of a region’s resources and how they are changing over time.

DOI (Digital Object Identifier): doi:10.7289/V5D50K9M
DOI Registration Authority: NOAA

Keywords

Theme Keywords

Thesaurus Keyword
CoRIS Discovery Thesaurus Numeric Data Sets > Biology
CoRIS Theme Thesaurus EARTH SCIENCE > Biosphere > Aquatic Habitat > Reef Habitat
CoRIS Theme Thesaurus EARTH SCIENCE > Biosphere > Zoology > Corals
CoRIS Theme Thesaurus EARTH SCIENCE > Biosphere > Zoology > Corals > Coral Mortality
CoRIS Theme Thesaurus EARTH SCIENCE > Biosphere > Zoology > Corals > Photic Zone Corals
CoRIS Theme Thesaurus EARTH SCIENCE > Biosphere > Zoology > Corals > Reef Monitoring and Assessment
CoRIS Theme Thesaurus EARTH SCIENCE > Oceans > Coastal Processes > Coral Reefs
CoRIS Theme Thesaurus EARTH SCIENCE > Oceans > Coastal Processes > Coral Reefs > Coral Reef Ecology > Benthic biology
CoRIS Theme Thesaurus EARTH SCIENCE > Oceans > Coastal Processes > Coral Reefs > Coral Reef Ecology > Coral Cover
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 > Hard Coral Cover
CoRIS Theme Thesaurus EARTH SCIENCE > Oceans > Coastal Processes > Coral Reefs > Coral Reef Ecology > Hard Coral Cover Dead percentage
CoRIS Theme Thesaurus EARTH SCIENCE > Oceans > Coastal Processes > Coral Reefs > Coral Reef Ecology > Hard Coral Cover Live percentage
CoRIS Theme Thesaurus EARTH SCIENCE > Oceans > Marine Biology > Coral
CoRIS Theme Thesaurus EARTH SCIENCE > Oceans > Marine Biology > Coral Communities
CoRIS Theme Thesaurus EARTH SCIENCE > Oceans > Marine Biology > Macroinvertebrates
CoRIS Theme Thesaurus EARTH SCIENCE > Oceans > Marine Biology > Marine Invertebrates
CoRIS Theme Thesaurus EARTH SCIENCE > Oceans > Marine Biology > Marine Invertebrates > Census
CoRIS Theme Thesaurus EARTH SCIENCE > Oceans > Marine Biology > Marine Invertebrates > Census > Macroinvertebrates
CoRIS Theme Thesaurus EARTH SCIENCE > Oceans > Marine Biology > Marine Invertebrates > Census > Population Density
CoRIS Theme Thesaurus EARTH SCIENCE > Oceans > Marine Biology > Marine Invertebrates > Macroinvertebrates
CRCP Project 743
CRCP Project National Coral Reef Monitoring Program
ISO 19115 Topic Category 002
ISO 19115 Topic Category Biota
NODC DATA TYPES THESAURUS CORAL
NODC DATA TYPES THESAURUS DEBRIS
NODC DATA TYPES THESAURUS DEPTH - SENSOR
NODC DATA TYPES THESAURUS HABITAT - BENTHIC
NODC DATA TYPES THESAURUS MACROINVERTEBRATE CENSUS
NODC DATA TYPES THESAURUS REEF AND/OR BOTTOM REGIME - PERCENT COVER
NODC DATA TYPES THESAURUS TEMPERATURE
NODC OBSERVATION TYPES THESAURUS survey
NODC OBSERVATION TYPES THESAURUS survey - biological
NODC OBSERVATION TYPES THESAURUS survey - coral reef
NODC OBSERVATION TYPES THESAURUS survey - swimmer/diver
NODC OBSERVATION TYPES THESAURUS tows
NODC OBSERVATION TYPES THESAURUS visual estimate
NODC PLATFORM NAMES THESAURUS HI'IALAKAI
NODC PROJECT NAMES THESAURUS Coral Reef Conservation Program
NODC PROJECT NAMES THESAURUS CORAL REEF STUDIES
NODC PROJECT NAMES THESAURUS National Coral Reef Monitoring 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 Pacific Islands Fisheries Science Center
None PIFSC
None TDS
None towboard
None towed diver
None Towed-diver surveys

Temporal Keywords

Thesaurus Keyword
None Triennial

Spatial Keywords

Thesaurus Keyword
CoRIS Place Thesaurus COUNTRY/TERRITORY > United States of America > USA Minor Outlying Islands > Baker Island (00N176W0001)
CoRIS Place Thesaurus COUNTRY/TERRITORY > United States of America > USA Minor Outlying Islands > Howland Island (00S176W0001)
CoRIS Place Thesaurus COUNTRY/TERRITORY > United States of America > USA Minor Outlying Islands > Jarvis Island (00S160W0001)
CoRIS Place Thesaurus COUNTRY/TERRITORY > United States of America > USA Minor Outlying Islands > Johnston Atoll (16N169W0001)
CoRIS Place Thesaurus COUNTRY/TERRITORY > United States of America > USA Minor Outlying Islands > Kingman Reef (06N162W0001)
CoRIS Place Thesaurus COUNTRY/TERRITORY > United States of America > USA Minor Outlying Islands > Palmyra Atoll (05N162W0001)
CoRIS Place Thesaurus COUNTRY/TERRITORY > United States of America > USA Minor Outlying Islands > Wake Atoll (19N167E0001)
CoRIS Place Thesaurus OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Baker Island > Baker Island (00N176W0001)
CoRIS Place Thesaurus OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Howland Island > Howland Island (00S176W0001)
CoRIS Place Thesaurus OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Johnston Atoll > Johnston Atoll (16N169W0001)
CoRIS Place Thesaurus OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Line Islands > Jarvis Island (00S160W0001)
CoRIS Place Thesaurus OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Line Islands > Kingman Reef (06N162W0001)
CoRIS Place Thesaurus OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Line Islands > Palmyra Atoll (05N162W0001)
CoRIS Place Thesaurus OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Wake Atoll > Wake Atoll (19N167E0001)
NODC SEA AREA NAMES THESAURUS Equatorial Pacific Ocean
NODC SEA AREA NAMES THESAURUS Pacific Remote Islands Marine National Monument
None Pacific Remote Island Areas
None PRIA

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: CSV Files
Maintenance Frequency: As Needed
Data Presentation Form: Table (digital)
Entity Attribute Overview:

Raw survey data includes metadata for each survey (where, when, who, length, duration, depth, reef type, temperature); and benthic observations.

Entity Attribute Detail URL: https://www.fisheries.noaa.gov/inport/item/35758
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 Set Credit

CC ID: 345174
Date Effective From: 2014
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

Data Steward

CC ID: 268379
Date Effective From: 2014
Date Effective To:
Contact (Person): Ferguson, Marie H
Address: 1845 Wasp Blvd.
Honolulu, HI 96818
Email Address: marie.ferguson@noaa.gov
Phone: (808)725-5414
Contact Instructions:

email preferred

Distributor

CC ID: 345175
Date Effective From: 2016
Date Effective To:
Contact (Organization): National Centers for Environmental Information - Silver Spring, Maryland (NCEI-MD)
Address: NOAA/NESDIS E/OC SSMC3, 4th Floor, 1351 East-West Highway
Silver Spring, MD 20910-3282
Phone: (301) 713-3277

Distributor

CC ID: 248878
Date Effective From: 2014
Date Effective To: 2016
Contact (Person): Kanemura, Troy T
Address: 1845 Wasp Blvd.
Honolulu, HI 96818
USA
Email Address: troy.kanemura@noaa.gov
Phone: (808)725-5422

Metadata Contact

CC ID: 248876
Date Effective From: 2014
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: 42059
Date Effective From: 2014
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: 248877
Date Effective From: 2014
Date Effective To:
Contact (Person): Vargas-Angel, Bernardo
Address: 1845 Wasp Blvd.
Honolulu, HI 96818
USA
Email Address: bernardo.vargasangel@noaa.gov
Phone: (808)725-5423
Contact Instructions:

email preferred

Extents

Currentness Reference: Ground Condition

Extent Group 1

Extent Description:

Pacific Remote Island Areas (PRIA)

Extent Group 1 / Geographic Area 1

CC ID: 360348
W° Bound: 166.5935981
E° Bound: 166.66036161
N° Bound: 19.32568586
S° Bound: 19.26717083
Description

Wake Island, one of the seven PRIA, is routinely surveyed as part of the Mariana Archipelago RAMP (MARAMP) missions.

Extent Group 1 / Geographic Area 2

CC ID: 360349
W° Bound: -176.6267916
E° Bound: -159.97149895
N° Bound: 16.78610853
S° Bound: -0.38272464
Description

Phoenix (Baker and Howland) and Line Islands (Jarvis, Kingman, and Palmyra), and Johnston Atoll. These six of the seven PRIA are routinely surveyed as part of the American Samoa RAMP (ASRAMP) missions (Johnston, Baker and Howland during the first leg of ASRAMP, and Jarvis, Kingman, and Palmyra during the last leg of ASRAMP).

Extent Group 1 / Time Frame 1

CC ID: 360350
Time Frame Type: Range
Start: 2015-01-26
End: 2015-02-08
Alternate Start As Of Info: HA1501
Description:

ASRAMP 2015, Leg 1, Johnston Atoll, and the U.S. Phoenix Islands (Baker and Howland).

Extent Group 1 / Time Frame 2

CC ID: 360351
Time Frame Type: Range
Start: 2015-04-08
End: 2015-04-26
Alternate Start As Of Info: HA1501
Description:

ASRAMP 2015, Leg 3, U.S. Line Islands (Palmyra, Kingman, and Jarvis).

Extent Group 1 / Time Frame 3

CC ID: 360352
Time Frame Type: Range
Start: 2014-03-16
End: 2014-03-17
Alternate Start As Of Info: HA1401
Description:

MARAMP 2014, Leg I, Wake Atoll

Extent Group 1 / Time Frame 4

CC ID: 572979
Time Frame Type: Range
Start: 2017-04-19
End: 2017-04-20
Alternate Start As Of Info: HA1701
Description:

MARAMP 2017 Leg 1 surveys at Wake

Extent Group 1 / Time Frame 5

CC ID: 572977
Time Frame Type: Range
Start: 2017-04-02
End: 2017-04-11
Alternate Start As Of Info: HA1701
Description:

MARAMP 2017 Leg 1 surveys at Jarvis, Howland, and Baker

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 NOAA National Centers for Environmental Information (NCEI) Ocean Archive.

Data Access Constraints:

None

Data Use Constraints:

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

Suggested citation:

Coral Reef Ecosystem Program; Pacific Islands Fisheries Science Center (2016). National Coral Reef Monitoring Program: Towed-diver Surveys of Benthic Habitat, Key Benthic Species, and Marine Debris Sightings of the Pacific Remote Island Areas since 2014. NOAA's National Centers for Environmental Information, https://www.fisheries.noaa.gov/inport/item/5567.

Metadata Access Constraints:

None

Metadata Use Constraints:

None

Distribution Information

Distribution 1

CC ID: 268378
Download URL: http://accession.nodc.noaa.gov/0157552
Distributor: National Centers for Environmental Information - Silver Spring, Maryland (NCEI-MD) (2016 - Present)
File Name: VS_BENT_TDS PRIAs 2014.csv
Description:

Observations from towed-diver surveys of the benthic habitat by the NOAA Coral Reef Ecosystem Program (CREP) conducted at Wake Island in 2014.

File Date/Time: 2016-12-14 00:00:00
File Type: csv (comma-separated values)

Distribution 2

CC ID: 360354
Download URL: http://accession.nodc.noaa.gov/0157564
Distributor: National Centers for Environmental Information - Silver Spring, Maryland (NCEI-MD) (2016 - Present)
File Name: VS_BENT_TDS PRIAs 2015.csv
Description:

Observations from towed-diver surveys of the benthic habitat by the NOAA Coral Reef Ecosystem Program (CREP) conducted at the Pacific Island Remote Areas in 2015.

File Date/Time: 2016-12-14 00:00:00
File Type: csv (comma-separated values)

Distribution 3

CC ID: 571830
Download URL: http://accession.nodc.noaa.gov/0164023
Distributor: National Centers for Environmental Information - Silver Spring, Maryland (NCEI-MD) (2016 - Present)
File Name: VS_BENT_TDS PRIAs 2017.csv
Description:

Observations from towed-diver surveys of the benthic habitat by the NOAA Coral Reef Ecosystem Program (CREP) conducted at Wake, Jarvis, Howland, and Baker in 2017.

File Date/Time: 2017-07-03 00:00:00
File Type: csv (comma-separated values)

Distribution 4

CC ID: 825651
Download URL: https://accession.nodc.noaa.gov/0157633
Distributor: National Centers for Environmental Information - Silver Spring, Maryland (NCEI-MD) (2016 - Present)
File Name: PIFSC_H-18-02_2018_SOP_towed-diver.pdf
Description:

Ecosystem Sciences Division standard operating procedures: data collection for towed-diver benthic and fish surveys. PIFSC Administrative Report H-18-02. https://doi.org/10.25923/59sb-sy51

File Date/Time: 2018-06-01 00:00:00
File Type: PDF

URLs

URL 1

CC ID: 357795
URL: https://www.pifsc.noaa.gov/cred/benthic_monitoring.php
URL Type:
Online Resource
File Resource Format: PHP
Description:

Coral Reef Ecosystem Program website, Benthic Monitoring

URL 2

CC ID: 357796
URL: http://www.coris.noaa.gov/monitoring/
URL Type:
Online Resource
File Resource Format: HTML
Description:

Information about the NOAA National Coral Reef Monitoring Program (NCRMP) on the NOAA Coral Reef Information System website.

URL 3

CC ID: 357797
URL: https://www.pifsc.noaa.gov/cred/img/towboard.jpg
URL Type:
Browse Graphic
File Resource Format: JPG
Description:

A diver conducting a survey of the benthos and benthic habitat using the towed diver method.

URL 4

CC ID: 357798
URL: http://www.pifsc.noaa.gov/cred/survey_methods.php
URL Type:
Online Resource
File Resource Format: PHP
Description:

NOAA Coral Reef Ecosystem Program website, survey methods page, which includes a brief description of the towed-diver survey method used since 2000 to survey the benthic habitat.

Technical Environment

Description:

PIFSC Oracle database view: VS_BENT_TDS

The latitude and longitude coordinates of the survey track are recorded using a Global Positioning System (GPS) receiver on-board the tow boat. The survey track is georeferenced and a layback model is applied (python script in ESRI ArcGIS for Desktop) that more accurately maps the positions of the recorded observations.

Data Quality

Representativeness:

The towed-diver surveys are completed in forereef, backreef, and lagoon habitats. Considering that the towed divers are covering ~200 m during each 5-min time frame of a 50-minute survey, benthic coverage calculations are broad estimates. These data can be used to see large differences but can not be processed to a fine scale.

Accuracy:

Observations during each tow were made by trained divers. The visual variation throughout the tow may change drastically as well as current and surface conditions for the support vessel impacting the preferred depth contour and accompanying track lines.

Analytical Accuracy:

The percentage cover for the different benthic elements are binned within 1 of 10 classification categories. NOAA PIFSC CREP’s use of the 10-category method is similar to AIMS, whereby percent cover of living hard coral, stressed coral, soft coral, macroalgae, crustose coralline algae, sand, and rubble are calculated from towed-diver results by representing each cover category through the midpoint of its range. Note that the total percentage cover will not add up to 100%, as several habitat categories (e.g., rock, pavement, etc) are not included.

Benthic cover categories and the corresponding percentage range bins are as follows:

Category 1: 0.1 -1 %

Category 2: 1.1 - 5 %

Category 3: 5.1 - 10 %

Category 4: 10.1 - 20 %

Category 5: 20.1 - 30 %

Category 6: 30.1 - 40 %

Category 7: 40.1 - 50 %

Category 8: 50.1 - 62.5 %

Category 9: 62.6 - 75 %

Category 10: 75.1 - 100 %

Macroinvertebrates are counted independently up to 25 individuals. Above that, numbers of each macroinvertebrate taxa are binned as follows:

Category 1: 26 – 50

Category 2: 51 – 100

Category 3: 101 – 250

Category 4: 251 – 500

Category 5: 501 – 1000

Category 6: > 1000

Data entry conversion for each macroinvertebrate category is as follows:

Category 1: 37

Category 2: 75

Category 3: 175

Category 4: 375

Category 5: 750

Category 6: 1001

The habitat complexity data is based on a six-point subjective assessment of topographical diversity and complexity of the benthic habitat. Classified according to 1 of 6 categories: low (L), medium-low (ML), medium (M), medium-high (MH), high (H), and very high (VH).

Completeness Report:

There are a few scenarios that will affect the completeness of the data:

-If the GPS points are not collected, associated diver's positions and survey tracks are not generated

-If the estimation of the divers' positions are erroneous and it is impossible to make corrections, the tow tracks/points are flagged and removed from further analyses

-If SEABIRD sensor (SB 39) is not operational during surveys, temperature and depth data are not available

Conceptual Consistency:

The same methods of data collection are used during each tow. Regular examination and comparisons of the data are conducted throughout each mission to check for diver bias or other discrepancies.

Quality Control Procedures Employed:

The data is entered in an MS Access database, then quality controlled against the physical data sheets prior to the data being considered final. Several queries in the MS Access and Oracle databases flag any errors based on predefined criteria.

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: NCEI-MD
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?:

The data is captured in several locations: physical data sheets, MS Access cruise database, and PIFSC Oracle database. The physical data sheets are housed at PIFSC. The MS Access cruise database is regularly backed up by the cruise data manager while at sea. The PIFSC Oracle database is regularly backed up by PIFSC ITS.

Lineage

Lineage Statement:

Benthic towed-diver survey method

Sources

Lino K, Asher J, Ferguson M, Gray A, McCoy K, Timmers M, Vargas-Ángel B (2018) Ecosystem Sciences Division standard operating procedures: data collection for towed-diver benthic and fish surveys. Pacific Islands Fish. Sci. Cent., Natl. Mar. Fish. Serv., NOAA, Honolulu, HI 96818-5007. Pacific Islands Fish. Sci. Cent. Admin. Rep. H-18-02, 76 p.

CC ID: 825654
Contact Role Type: Originator
Contact Type: Organization
Contact Name: Pacific Islands Fisheries Science Center
Publish Date: 2018-06-01
Citation URL: https://doi.org/10.25923/59sb-sy51
Citation URL Name: NOAA Institutional Repository
Citation URL Description:

Ecosystem Sciences Division standard operating procedures: data collection for towed-diver benthic and fish surveys.

Source Contribution:

Survey protocol

Process Steps

Process Step 1

CC ID: 357799
Description:

A pair of scuba divers is towed about 1 m above the reef roughly 60 m behind a small boat at a constant speed of about 1.5 knots. One diver quantifies fish populations, and the other diver quantifies the benthos. Each diver maneuvers their own towboard. Towboards are connected to the small boat by a bridle and towline and outfitted with various survey equipment, including a video camera on the fish towboard. The benthic diver records percentage cover of total live hard corals, stressed hard corals, soft corals, sand, coralline algae, and macroalgae, and the number of individual macroinvertebrates (crown of thorns starfish (COTS), sea urchins, and giant clams) as well as benthic habitat complexity and type data.

A towed survey is typically 50 min long and covers about 2 km of habitat. Each survey is divided into 5-min segments, with data recorded separately per segment to allow for georeferencing of observations within the ~200 m covered during each segment. Throughout a survey, the latitude and longitude of its survey track are recorded at 5-s intervals on the small boat with a global positioning system (GPS). Following a survey, diver tracks are generated using this GPS data and a layback algorithm to account for position of the diver relative to the small boat.

Process Contact: Ferguson, Marie H
Phone (Voice): (808)725-5414
Email Address: marie.ferguson@noaa.gov

Child Items

Rubric scores updated every 15m

Rubric Score Type Title
Entity (ENT) View: VS_BENT_TDS

Catalog Details

Catalog Item ID: 5567
Metadata Record Created By: Christopher Y Tokita
Metadata Record Created: 2007-10-18 09:38+0000
Metadata Record Last Modified By: SysAdmin InPortAdmin
Metadata Record Last Modified: 2020-08-03 16:13+0000
Metadata Record Published: 2017-07-07
Owner Org: PIFSC
Metadata Publication Status: Published Externally
Do Not Publish?: N
Metadata Next Review Date: 2018-07-08