CRED Towed-Diver Fish Biomass Survey at Baker, Pacific Remote Island Areas in 2010
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Metadata:
- Identification_Information:
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- Citation:
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- Citation_Information:
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- Originator:
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Coral Reef Ecosystem Division (CRED), Pacific Islands Fisheries Science Center (PIFSC), National Marine Fisheries Service (NMFS), National Oceanic and Atmospheric Administration (NOAA)
- Publication_Date: 20101220
- Title:
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CRED Towed-Diver Fish Biomass Survey at Baker, Pacific Remote
Island Areas in 2010
- Geospatial_Data_Presentation_Form: spreadsheet
- Online_Linkage:
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https://www.fisheries.noaa.gov/pacific-islands/ecosystems/surveying-vast-ocean
- Description:
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- Abstract:
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To support NOAA Coral Reef Conservation Program (CRCP) long-term
goals for sustainable management and conservation of coral reef
ecosystems, towed-diver surveys (AKA towboard surveys) are
conducted by the Coral Reef Ecosystem Division (CRED) of the
NOAA Pacific Islands Fisheries Science Center (PIFSC) as part of
Pacific Reef Assessment and Monitoring Program (RAMP) Cruises. 9
towboard surveys (totaling 19.13 km in length) were conducted at
Baker in Pacific Remote Island Areas from 2010-01-21 to
2010-04-24 as part of RAMP Cruise HA1001. Towboard surveys are a
good method for obtaining a general description of large reef
areas, assessing the status of low-density populations of
large-bodied reef fish, large-scale disturbances (e.g.,
bleaching), general distribution and abundance patterns of
macro-invertebrates (e.g., crown of thorns sea stars, giant
clams), and for assessing trends in these populations and
metrics. A pair of scuba divers (1 fish diver and 1 benthic
diver) are towed 60 m behind a small survey launch at a speed of
1-2 knots and a depth of approximately 15 m. Each survey is 50
min long, covers about 2 km of habitat, and is divided into ten
5-minute survey segments. The fish diver records, to the lowest
possible taxon, all large-bodied reef fishes (greater than 50 cm
total length) seen within 5 m either side and 10 m in front of
the towboard. Length of each individual is estimated to the
nearest cm. The fish towboard is also outfitted with a
forward-facing digital video camera to record the survey swath.
The benthic diver records percent cover of coral and macroalgae,
estimates benthic habitat type and complexity, and censuses a
suite of benthic macroinvertebrates including crown of thorns
sea stars and sea urchins. The benthic towboard is equipped with
a downward-facing digital still camera which images the benthos
at 15-second intervals. These images are analyzed for percent
cover of coral, algae, and other benthic components. Both
towboards are equipped with SEABIRD SBE-39 temperature/depth
sensors set to record at 5-second intervals. Latitude and
longitude of each survey track is recorded at 15-second
intervals using a Global Positioning System (GPS) receiver
onboard the tow boat. A layback algorithm is applied to more
accurately map the position of the divers with respect to the
reef environment. This algorithm calculates the position of the
divers based on the position of the tow boat taking into account
the length of the tow rope, the depth of the divers, and the
curvature of the survey track. This metadata applies to the fish
biomass observations.
- Purpose:
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status and trends of coral reef ecosystems within the United
States Pacific Territories .
- Supplemental_Information:
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Data collected: Species level abundance and length information
for coral reef fishes greater than 50 cm total length. Data is
linked to a geographic shapefile via DiveID or SegID. Abundance
and/or biomass data can be provided at the species or family
level.
- Time_Period_of_Content:
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- Time_Period_Information:
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- Range_of_Dates/Times:
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- Beginning_Date: 20100206
- Ending_Date: 20100207
- Currentness_Reference: Ground Condition
- Status:
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- Progress: Complete
- Maintenance_and_Update_Frequency: asNeeded
- Spatial_Domain:
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- Bounding_Coordinates:
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- West_Bounding_Coordinate: -176.48900941
- East_Bounding_Coordinate: -176.45850459
- North_Bounding_Coordinate: 0.2057679
- South_Bounding_Coordinate: 0.18632851
- Keywords:
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- Theme:
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- Theme_Keyword_Thesaurus: NCEI Geoportal Filter
- Theme_Keyword: CoRIS_Metadata
- Theme:
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- Theme_Keyword_Thesaurus: CRCP Project
- Theme_Keyword:
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Pacific Reef Assessment and Monitoring Program (Pacific RAMP): Biennial monitoring for the U.S. Pacific Islands and Atolls
- Theme_Keyword: 1221
- Theme:
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- Theme_Keyword_Thesaurus: None
- Theme_Keyword: Marine Ecosystem
- Theme_Keyword: Reef Assessment and Monitoring Program (RAMP)
- Theme_Keyword: Towed Diver Surveys
- Theme_Keyword: Coral Reef
- Theme_Keyword: Reef Fishes
- Theme_Keyword: Benthic Habitat
- Theme_Keyword: Pacific Remote Island Areas
- Theme_Keyword: Baker
- Theme_Keyword: HA1001
- Theme:
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- Theme_Keyword_Thesaurus: CoRIS Discovery Thesaurus
- Theme_Keyword: Numeric Data Sets > Biology
- Theme:
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- Theme_Keyword_Thesaurus: CoRIS Theme Thesaurus
- Theme_Keyword: EARTH SCIENCE > Oceans > Coastal Processes > Coral Reefs
- Theme_Keyword:
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EARTH SCIENCE > Oceans > Coastal Processes > Coral Reefs > Coral reef ecology
- Theme_Keyword:
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EARTH SCIENCE > Biosphere > Zoology > Corals > Reef monitoring and assessment
- Theme_Keyword:
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EARTH SCIENCE > Biosphere > Zoology > Corals > Reef monitoring and assessment > Reef fish census
- Theme:
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- Theme_Keyword_Thesaurus: ISO 19115 Topic Category
- Theme_Keyword: biota
- Theme_Keyword: 002
- Place:
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- Place_Keyword_Thesaurus: None
- Place_Keyword: Pacific Remote Island Areas
- Place_Keyword: Baker
- Place:
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- Place_Keyword_Thesaurus: CoRIS Place Thesaurus
- Place_Keyword:
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OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Baker Island > Baker Island (00N176W0001)
- Place_Keyword:
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COUNTRY/TERRITORY > United States of America > USA Minor Outlying Islands > Baker Island (00N176W0001)
- Place:
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- Place_Keyword_Thesaurus: CoRIS Region
- Place_Keyword: PRIA
- Access_Constraints: None
- Use_Constraints:
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Please cite CRED when using data. Coral Reef Ecosystem Division,
Pacific Islands Fisheries Science Center, National Marine
Fisheries Service, National Oceanic and Atmospheric Administration
- Point_of_Contact:
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- Contact_Information:
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- Contact_Organization_Primary:
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- Contact_Organization:
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Coral Reef Ecosystem Division (CRED), Pacific Islands Fisheries Science Center (PIFSC), National Marine Fisheries Service (NMFS), National Oceanic and Atmospheric Administration (NOAA)
- Contact_Address:
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- Address_Type: mailing and physical address
- Address: NOAA IRC
- Address: NMFS/PIFSC/CRED
- Address: 1845 WASP Blvd., Building 176
- City: Honolulu
- State_or_Province: HI
- Postal_Code: 96818
- Country: USA
- Contact_Voice_Telephone: 808 725-5360
- Contact_Facsimile_Telephone: 808 725-5429
- Contact_Electronic_Mail_Address: nmfs.pic.credinfo@noaa.gov
- Contact_Instructions: e-mail preferred
- Data_Set_Credit:
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Benjamin Richards and Jason Helyer, Coral Reef Ecosystem
Division (CRED), Pacific Islands Fisheries Sciences Center,
NOAA National Marine Fisheries Service
- Security_Information:
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- Security_Classification_System: Not applicable
- Security_Classification: Unclassified
- Security_Handling_Description: Not applicable
- Native_Data_Set_Environment: Oracle
- Data_Quality_Information:
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- Attribute_Accuracy:
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- Attribute_Accuracy_Report:
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Observations were made by the divers who are trained in fish
taxonomy. Divers may change from year to year and by location.
- Logical_Consistency_Report:
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The same data collection protocols were used at each island or bank
surveyed.
- Completeness_Report:
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The towboard surveys are completed in forereef, backreef, and
lagoon habitats. The minimum spatial resolution of the towboard
survey is the 5-minute survey segment which covers approximately
200 m. As such, these surveys are appropriate for broad estimates
but cannot be used for fine scale, site-level data analysis.
- Positional_Accuracy:
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- Horizontal_Positional_Accuracy:
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- Horizontal_Positional_Accuracy_Report:
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Although resource grade GPS units were used and a layback
model was applied to the survey tracks, the exact survey
positions were not physically marked and effort was not made
to re-visit exact same tracks.
- Quantitative_Horizontal_Positional_Accuracy_Assessment:
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- Horizontal_Positional_Accuracy_Value: 1
- Horizontal_Positional_Accuracy_Explanation: Instrument parameters
- Vertical_Positional_Accuracy:
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- Vertical_Positional_Accuracy_Report: SeaBird SBE-39 temp/depth recorder
- Quantitative_Vertical_Positional_Accuracy_Assessment:
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- Vertical_Positional_Accuracy_Value: 0.3
- Vertical_Positional_Accuracy_Explanation: Instrument parameters
- Lineage:
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- Process_Step:
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- Process_Description:
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The towboard survey involves a pair of scuba divers who are
towed 60 m behind a small boat at a constant speed (~1.5
knots). The towboard survey is typically 50-min long and
covers about 2 km of habitat, depending on the depth profile
of the divers. The survey is divided into ten 5-min segments.
During the survey, the fish diver records, to the lowest
possible taxon, large fishes observed within a survey swath 5
m to either side of the diver and 10 m in front the diver.
- Process_Date: Unknown
- Spatial_Reference_Information:
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- Horizontal_Coordinate_System_Definition:
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- Geographic:
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- Latitude_Resolution: 0.0001
- Longitude_Resolution: 0.0001
- Geographic_Coordinate_Units: Decimal Degrees
- Geodetic_Model:
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- Horizontal_Datum_Name: World Geodetic System 1984 (WGS84)
- Ellipsoid_Name: Geodetic Reference System 80 (GRS80)
- Semi-major_Axis: 6378137
- Denominator_of_Flattening_Ratio: 298.2572236
- Vertical_Coordinate_System_Definition:
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- Depth_System_Definition:
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- Depth_Datum_Name: Local surface
- Depth_Resolution: 1
- Depth_Distance_Units: meters
- Depth_Encoding_Method: Explicit Depth Coordinate Included with Horizontal Coordinates
- Distribution_Information:
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- Distributor:
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- Contact_Information:
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- Contact_Organization_Primary:
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- Contact_Organization:
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Coral Reef Ecosystem Division (CRED), Pacific Islands Fisheries Science Center (PIFSC), National Marine Fisheries Service (NMFS), National Oceanic and Atmospheric Administration (NOAA)
- Contact_Position: Data Manager
- Contact_Address:
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- Address_Type: mailing and physical address
- Address: NOAA IRC
- Address: NMFS/PIFSC/CRED
- Address: 1845 WASP Blvd., Building 176
- City: Honolulu
- State_or_Province: HI
- Postal_Code: 96818
- Country: USA
- Contact_Voice_Telephone: 808 725-5360
- Contact_Facsimile_Telephone: 808 725-5429
- Contact_Electronic_Mail_Address: nmfs.pic.credinfo@noaa.gov
- Contact_Instructions: e-mail preferred
- Resource_Description: Offline Data
- Distribution_Liability:
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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.
- Standard_Order_Process:
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- Digital_Form:
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- Digital_Transfer_Information:
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- Format_Name:
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xls (Microsoft Excel worksheet) or csv (comma-separated
values)
- Digital_Transfer_Option:
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- Offline_Option:
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- Offline_Media: CD-ROM or email
- Recording_Format: ISO 9660
- Fees: None if receiving the data online
- Custom_Order_Process: Contact CRED data management team for information
- Technical_Prerequisites: Contact CRED data management team for information
- Metadata_Reference_Information:
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- Metadata_Date: 20190605
- Metadata_Review_Date: 20101229
- Metadata_Contact:
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- Contact_Information:
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- Contact_Organization_Primary:
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- Contact_Organization:
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Coral Reef Ecosystem Division (CRED), Pacific Islands Fisheries Science Center (PIFSC), National Marine Fisheries Service (NMFS), National Oceanic and Atmospheric Administration (NOAA)
- Contact_Address:
-
- Address_Type: mailing and physical address
- Address: NOAA IRC
- Address: NMFS/PIFSC/CRED
- Address: 1845 WASP Blvd., Building 176
- City: Honolulu
- State_or_Province: HI
- Postal_Code: 96818
- Country: USA
- Contact_Voice_Telephone: 808 725-5360
- Contact_Facsimile_Telephone: 808 725-5429
- Contact_Electronic_Mail_Address: nmfs.pic.credinfo@noaa.gov
- Contact_Instructions: e-mail preferred
- Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata
- Metadata_Standard_Version: FGDC-STD-001-1998
- CoRIS:
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- CoRIS_ID: 20101229042655
- CoRIS_Children: None
- CoRIS_Beginning_Date: 20100206
- CoRIS_Ending_Date: 20100207
- CoRIS_Metadata_Link:
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https://www.coris.noaa.gov/metadata/records/html/bakerfishtowmetadata2010.html
- CoRIS_Tracking_ID: 6111
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