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Bottom_Trawl_Survey (FeatureServer)

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Service Description:

Bottom Trawl Survey InPort Metadata
The Northeast Fisheries Science Center (NEFSC) Bottom Trawl Survey (BTS) is the primary source of synoptic, shelf-wide, multiseason, annually repeated fish and oceanographic data on the Northeast U.S. Shelf. Furthermore, it is the primary data source of relative abundance data for 48 stock assessments (and an important component of an additional 6 assessments), as well as the source of population demography, maturity, and stomach contents data for the region. It is also a reliable source of other biological samples, as requested, from internal and external partners. The objectives of the NEFSC BTS are twofold: (1) to monitor trends in biological parameters (e.g., recruitment, biomass, growth, maturity, mortality) and geographic distribution of fish and invertebrates of the Northwest Atlantic Continental Shelf; and (2) collect and monitor ecosystem-level data for broad-scale oceanographic and environmental changes. The BTS is fully standardized, including sampling gear construction and performance, vessel(s), standard operating procedures, and spatiotemporal sampling consistency. Survey catch is identified to species level for all fish and a subset of invertebrates (i.e. decapods, cephalopods, some bivalves), and aggregate catch weights are recorded for each species. Biological samples and individual weights are collected for subsampled fish, subsampled invertebrates, and all protected species. The gear captures smaller size classes than commercial gears, and therefore provides estimates of cohorts before they enter the fishery, as well as critical samples of immature fish to inform maturity curves. Oceanographic sampling includes a vertical conductivity, temperature, and depth (CTD) cast at all trawl stations, oblique bongo plankton tows at a subset of stations, and continuous measurement of additional variables via a surface water flow-through system.



Service ItemId: e014fc5fe86340e29726a669018886dc

Has Versioned Data: false

Max Record Count: 2000

Supported query Formats: JSON

Supports applyEdits with GlobalIds: False

Supports Shared Templates: True

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Description:

Bottom Trawl Survey InPort Metadata
The Northeast Fisheries Science Center (NEFSC) Bottom Trawl Survey (BTS) is the primary source of synoptic, shelf-wide, multiseason, annually repeated fish and oceanographic data on the Northeast U.S. Shelf. Furthermore, it is the primary data source of relative abundance data for 48 stock assessments (and an important component of an additional 6 assessments), as well as the source of population demography, maturity, and stomach contents data for the region. It is also a reliable source of other biological samples, as requested, from internal and external partners. The objectives of the NEFSC BTS are twofold: (1) to monitor trends in biological parameters (e.g., recruitment, biomass, growth, maturity, mortality) and geographic distribution of fish and invertebrates of the Northwest Atlantic Continental Shelf; and (2) collect and monitor ecosystem-level data for broad-scale oceanographic and environmental changes. The BTS is fully standardized, including sampling gear construction and performance, vessel(s), standard operating procedures, and spatiotemporal sampling consistency. Survey catch is identified to species level for all fish and a subset of invertebrates (i.e. decapods, cephalopods, some bivalves), and aggregate catch weights are recorded for each species. Biological samples and individual weights are collected for subsampled fish, subsampled invertebrates, and all protected species. The gear captures smaller size classes than commercial gears, and therefore provides estimates of cohorts before they enter the fishery, as well as critical samples of immature fish to inform maturity curves. Oceanographic sampling includes a vertical conductivity, temperature, and depth (CTD) cast at all trawl stations, oblique bongo plankton tows at a subset of stations, and continuous measurement of additional variables via a surface water flow-through system.



Copyright Text:

These data were produced by NOAA and are not subject to copyright protection in the United States. NOAA waives any potential copyright and related rights in these data worldwide through the Creative Commons Zero 1.0 Universal Public Domain Dedication (CC0 1.0)

CC0 1.0 Universal

Spatial Reference: 4269 (4269)

Initial Extent:
Full Extent:
Units: esriDecimalDegrees

Child Resources:   Info   SharedTemplates

Supported Operations:   Query   ConvertFormat   Get Estimates   Create Replica