EK60 Water Column Sonar Data Collected During SE1703
Leeward Oahu Pelagic Ecosystem Characterization (LOPEC-1) (SE1703, EK60). The first primary component of LOPEC-1 on SE1703 was to perform a midwater trawl and bongo net survey from the Oscar Elton Sette to compare to a series of trawl and bongo net surveys from 1951-1978 off leeward Oahu, henceforth referred to as the baseline surveys. The baseline surveys estimated fish composition and abundance for 4 different components of the pelagic community, notably the mesopelagic fish assemblage, shorefish larvae, tuna larvae, as well as a suite of zooplankton taxa from 2 forage availability studies and an early trawl survey. Comparison of current composition and abundances to the baseline composition and abundances after 39-66 years will be a valuable scientific finding to ascertain how the pelagic ecosystem has changed, or not, over that extended time period. The sampling gears used in the baseline surveys from 1951-1978 are 10โ Isaacs-Kidd midwater trawl (IKMT), Cobb trawl, and 70cm bongo nets, all of which are available and deployable on Oscar Elton Sette. The second primary component of LOPEC on SE17-03 was to establish a time series of micronekton and plankton for the leeward Oahu area for ecosystem monitoring. Some operations from the baseline comparison component will be part of the new time series with additional surveys of plankton using other sampling gear such as ring nets and other configurations (different mesh sizes) of bongo nets during both the daytime and the nighttime.
Dataset Citation
- Cite as: Pacific Islands Fisheries Science Center. 2017. 'EK60 Water Column Sonar Data Collected During SE1703'. NOAA National Centers for Environmental Information. doi:10.7289/V5ZP44CS [access date]
Dataset Identifiers
- SE1703_EK60
- doi:10.7289/V5ZP44CS
- NCEI Metadata ID:gov.noaa.ngdc.mgg.wcd:SE1703_EK60
ISO 19115-2 Metadata
gov.noaa.ngdc.mgg.wcd:SE1703_EK60
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Ordering Instructions | Contact the NCEI Water Column Sonar Data Manager to order data. |
Distributor |
NOAA National Centers for Environmental Information ncei.info@noaa.gov |
Dataset Point of Contact |
NOAA National Centers for Environmental Information ncei.info@noaa.gov |
Dataset Point of Contact | Water Column Sonar Data Manager NOAA National Centers for Environmental Information (303) 497-4742 wcd.info@noaa.gov |
Time Period | 2017-03-31T22:06:49 to 2017-04-07T09:11:05 |
Spatial Reference System | urn:ogc:def:crs:EPSG::4326Vertical Datum: Unknown |
Spatial Bounding Box Coordinates |
West: -158.65266
East: -158.2099
South: 21.25019
North: 21.5951
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Dataset Progress Status | Complete - production of the data has been completed |
Data Update Frequency | Not planned |
Purpose | LOPEC-1 conducted plankton and micronekton surveys off leeward Oahu in 2017 in support of furthering our understanding of pelagic ecosystems. |
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International Hydrographic Organization (IHO) Sea Area ("Limits of Oceans and Seas" publication S-23)
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Last Modified: 2020-06-03
For questions about the information on this page, please email: ncei.info@noaa.gov
For questions about the information on this page, please email: ncei.info@noaa.gov