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| Dataset Title: | Northeast Fisheries Science Center "Fish Species Through Time" Trawl Dataset[ TG2]. 
|
| Institution: | Rutgers University (Dataset ID: NEFSC_FISH_SPECIES_THROUGH_TIME) |
| Information: | Summary
| License
| FGDC
| ISO 19115
| Metadata
| Background
| Make a graph
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Attributes {
longitude {
UInt32 _ChunkSizes 577;
String _CoordinateAxisType "Lon";
Float32 actual_range -76.39011, -64.99374;
String axis "X";
String ioos_category "Location";
String long_name "Longitude";
String standard_name "longitude";
String units "degrees_east";
}
latitude {
UInt32 _ChunkSizes 557;
String _CoordinateAxisType "Lat";
Float32 actual_range 33.98944, 44.99011;
String axis "Y";
String ioos_category "Location";
String long_name "Latitude";
String standard_name "latitude";
String units "degrees_north";
}
decade {
Float32 actual_range 1970.0, 2010.0;
String ioos_category "Time";
String long_name "Decade of analysis";
String units "years";
}
Alewife_Fall_biomass {
Float32 _FillValue -999999.0;
String ioos_category "Unknown";
String long_name "Alewife Fall biomass threshold";
String summary "1-presence:2-High Biomass:3-Highest Biomass";
}
Alewife_Spring_biomass {
Float32 _FillValue -999999.0;
String ioos_category "Unknown";
String long_name "Alewife Spring biomass threshold";
String summary "1-presence:2-High Biomass:3-Highest Biomass";
}
AmericanShad_Fall_biomass {
Float32 _FillValue -999999.0;
String ioos_category "Unknown";
String long_name "AmericanShad Fall biomass threshold";
String summary "1-presence:2-High Biomass:3-Highest Biomass";
}
AmericanShad_Spring_biomass {
Float32 _FillValue -999999.0;
String ioos_category "Unknown";
String long_name "AmericanShad Spring biomass threshold";
String summary "1-presence:2-High Biomass:3-Highest Biomass";
}
AtlanticMackerel_Fall_biomass {
Float32 _FillValue -999999.0;
String ioos_category "Unknown";
String long_name "AtlanticMackerel Fall biomass threshold";
String summary "1-presence:2-High Biomass:3-Highest Biomass";
}
AtlanticMackerel_Spring_biomass {
Float32 _FillValue -999999.0;
String ioos_category "Unknown";
String long_name "AtlanticMackerel Spring biomass threshold";
String summary "1-presence:2-High Biomass:3-Highest Biomass";
}
BlackSeaBass_Fall_biomass {
Float32 _FillValue -999999.0;
String ioos_category "Unknown";
String long_name "BlackSeaBass Fall biomass threshold";
String summary "1-presence:2-High Biomass:3-Highest Biomass";
}
BlackSeaBass_Spring_biomass {
Float32 _FillValue -999999.0;
String ioos_category "Unknown";
String long_name "BlackSeaBass Spring biomass threshold";
String summary "1-presence:2-High Biomass:3-Highest Biomass";
}
BluebackHerring_Fall_biomass {
Float32 _FillValue -999999.0;
String ioos_category "Unknown";
String long_name "BluebackHerring Fall biomass threshold";
String summary "1-presence:2-High Biomass:3-Highest Biomass";
}
BluebackHerring_Spring_biomass {
Float32 _FillValue -999999.0;
String ioos_category "Unknown";
String long_name "BluebackHerring Spring biomass threshold";
String summary "1-presence:2-High Biomass:3-Highest Biomass";
}
Bluefish_Fall_biomass {
Float32 _FillValue -999999.0;
String ioos_category "Unknown";
String long_name "Bluefish Fall biomass threshold";
String summary "1-presence:2-High Biomass:3-Highest Biomass";
}
Bluefish_Spring_biomass {
Float32 _FillValue -999999.0;
String ioos_category "Unknown";
String long_name "Bluefish Spring biomass threshold";
String summary "1-presence:2-High Biomass:3-Highest Biomass";
}
Butterfish_Fall_biomass {
Float32 _FillValue -999999.0;
String ioos_category "Unknown";
String long_name "Butterfish Fall biomass threshold";
String summary "1-presence:2-High Biomass:3-Highest Biomass";
}
Butterfish_Spring_biomass {
Float32 _FillValue -999999.0;
String ioos_category "Unknown";
String long_name "Butterfish Spring biomass threshold";
String summary "1-presence:2-High Biomass:3-Highest Biomass";
}
LongfinSquid_Fall_biomass {
Float32 _FillValue -999999.0;
String ioos_category "Unknown";
String long_name "LongfinSquid Fall biomass threshold";
String summary "1-presence:2-High Biomass:3-Highest Biomass";
}
LongfinSquid_Spring_biomass {
Float32 _FillValue -999999.0;
String ioos_category "Unknown";
String long_name "LongfinSquid Spring biomass threshold";
String summary "1-presence:2-High Biomass:3-Highest Biomass";
}
Monkfish_Fall_biomass {
Float32 _FillValue -999999.0;
String ioos_category "Unknown";
String long_name "Monkfish Fall biomass threshold";
String summary "1-presence:2-High Biomass:3-Highest Biomass";
}
Monkfish_Spring_biomass {
Float32 _FillValue -999999.0;
String ioos_category "Unknown";
String long_name "Monkfish Spring biomass threshold";
String summary "1-presence:2-High Biomass:3-Highest Biomass";
}
NorthernShortfinSquid_Fall_biomass {
Float32 _FillValue -999999.0;
String ioos_category "Unknown";
String long_name "NorthernShortfinSquid Fall biomass threshold";
String summary "1-presence:2-High Biomass:3-Highest Biomass";
}
NorthernShortfinSquid_Spring_biomass {
Float32 _FillValue -999999.0;
String ioos_category "Unknown";
String long_name "NorthernShortfinSquid Spring biomass threshold";
String summary "1-presence:2-High Biomass:3-Highest Biomass";
}
RedHake_Fall_biomass {
Float32 _FillValue -999999.0;
String ioos_category "Unknown";
String long_name "RedHake Fall biomass threshold";
String summary "1-presence:2-High Biomass:3-Highest Biomass";
}
RedHake_Spring_biomass {
Float32 _FillValue -999999.0;
String ioos_category "Unknown";
String long_name "RedHake Spring biomass threshold";
String summary "1-presence:2-High Biomass:3-Highest Biomass";
}
SandLance_Fall_biomass {
Float32 _FillValue -999999.0;
String ioos_category "Unknown";
String long_name "SandLance Fall biomass threshold";
String summary "1-presence:2-High Biomass:3-Highest Biomass";
}
SandLance_Spring_biomass {
Float32 _FillValue -999999.0;
String ioos_category "Unknown";
String long_name "SandLance Spring biomass threshold";
String summary "1-presence:2-High Biomass:3-Highest Biomass";
}
Scup_Fall_biomass {
Float32 _FillValue -999999.0;
String ioos_category "Unknown";
String long_name "Scup Fall biomass threshold";
String summary "1-presence:2-High Biomass:3-Highest Biomass";
}
Scup_Spring_biomass {
Float32 _FillValue -999999.0;
String ioos_category "Unknown";
String long_name "Scup Spring biomass threshold";
String summary "1-presence:2-High Biomass:3-Highest Biomass";
}
SpinyDogfish_Fall_biomass {
Float32 _FillValue -999999.0;
String ioos_category "Unknown";
String long_name "SpinyDogfish Fall biomass threshold";
String summary "1-presence:2-High Biomass:3-Highest Biomass";
}
SpinyDogfish_Spring_biomass {
Float32 _FillValue -999999.0;
String ioos_category "Unknown";
String long_name "SpinyDogfish Spring biomass threshold";
String summary "1-presence:2-High Biomass:3-Highest Biomass";
}
NC_GLOBAL {
String cdm_data_type "Grid";
String comment "The NEFSC trawl survey changed boats and gear in 2009, resulting in potentially different catch rates for some species. Calibration factors have been developed by NEFSC for some species so comparison between pre- and post-2009 datasets is possible, and those calibration factors have been applied in this analysis where applicable, however the calibration factors are imperfect and were not developed for all species. Some species (e.g. Atlantic Herring) were not targeted by the Trawl survey. As a result, the visualization of high biomass areas may be incomplete in these cases.Finally, these layers do not include state-run trawl surveys such as NEAMAP. Therefore, these data only account for the biomass values within the NEFSC trawl survey, and may miss some important areas of high biomass near the coast.";
String Conventions "CF-1.6, COARDS, ACDD-1.3";
Float64 Easternmost_Easting -64.99374;
Float64 geospatial_lat_max 44.99011;
Float64 geospatial_lat_min 33.98944;
Float64 geospatial_lat_resolution 0.019785377697841725;
String geospatial_lat_units "degrees_north";
Float64 geospatial_lon_max -64.99374;
Float64 geospatial_lon_min -76.39011;
Float64 geospatial_lon_resolution 0.01978536458333334;
String geospatial_lon_units "degrees_east";
String history
"Created by Eli Hunter (hunter@marine.rutgers.edu),19-Jun-2020 13:09:19
2025-02-21T16:37:26Z (local files)
2025-02-21T16:37:26Z https://nybsand.marine.rutgers.edu/erddap/griddap/NEFSC_FISH_SPECIES_THROUGH_TIME.das";
String infoUrl "https://portal.midatlanticocean.org/data-catalog/";
String institution "Rutgers University";
String keywords "alewife, Alewife_Fall_biomass, Alewife_Spring_biomass, americanshad, AmericanShad_Fall_biomass, AmericanShad_Spring_biomass, atlanticmackerel, AtlanticMackerel_Fall_biomass, AtlanticMackerel_Spring_biomass, biomass, blackseabass, BlackSeaBass_Fall_biomass, BlackSeaBass_Spring_biomass, bluebackherring, BluebackHerring_Fall_biomass, BluebackHerring_Spring_biomass, bluefish, Bluefish_Fall_biomass, Bluefish_Spring_biomass, butterfish, Butterfish_Fall_biomass, Butterfish_Spring_biomass, center, data, dataset, decade, fall, fish, fisheries, longfinsquid, LongfinSquid_Fall_biomass, LongfinSquid_Spring_biomass, monkfish, Monkfish_Fall_biomass, Monkfish_Spring_biomass, nefsc, nmfs, noaa, norhteast, northeast, northernshortfinsquid, NorthernShortfinSquid_Fall_biomass, NorthernShortfinSquid_Spring_biomass, redhake, RedHake_Fall_biomass, RedHake_Spring_biomass, sandlance, SandLance_Fall_biomass, SandLance_Spring_biomass, science, scup, Scup_Fall_biomass, Scup_Spring_biomass, species, spinydogfish, SpinyDogfish_Fall_biomass, SpinyDogfish_Spring_biomass, spring, threshold, through, time, trawl";
String license
"The data may be used and redistributed for free but is not intended
for legal use, since it may contain inaccuracies. Neither the data
Contributor, ERD, NOAA, nor the United States Government, nor any
of their employees or contractors, makes any warranty, express or
implied, including warranties of merchantability and fitness for a
particular purpose, or assumes any legal liability for the accuracy,
completeness, or usefulness, of this information.";
Float64 Northernmost_Northing 44.99011;
String source "https://www.nefsc.noaa.gov/ecosys/spatial-analyses/,Benthic_Habitats.zip";
String sourceUrl "(local files)";
Float64 Southernmost_Northing 33.98944;
String standard_name_vocabulary "CF Standard Name Table v55";
String summary "The Fish Species Through Time data represent an analysis of Northeast Fisheries Science Center (NEFSC) bottom trawl survey data collected between 1972 and 2016 (Spring includes an additional year up to 2017). This analysis was performed by The Nature Conservancy with funding from Virginia�s Coastal Zone Management Program. Layers show where selected individual fish species have consistently been found in high biomass over time (by decade). The species included are those that are important recreationally and/or commercially in the Mid-Atlantic region and are also relatively well represented in the trawl survey data. Employing analysis methods developed by NEFSC and Rutgers University, an interpolated biomass surface was derived for each species, each year and each season (refer to the documentation of the fish biomass data layers on the Mid-Atlantic Ocean Data Portal for an overview on the methods used). Each interpolated surface was then analyzed to determine areas of higher relative biomass. Two thresholds were used � �high� and �highest�. These thresholds represent biomass values in the top 25% and top 10%, respectively, of all biomass values available for an individual species and season. The same threshold values are used for all decades, so the resulting layers are comparable. These areas of high biomass by year were then combined by decade (e.g., 1990 � 1999) and areas with high year-to-year variability (areas with 5 years or less within the high or very high categories, or persistence below 50%) were removed. Areas where a species was present, regardless of biomass, were also developed. Finally, data layers were developed showing \"overlap areas\" for each species. This is a single layer for each species that shows areas of high biomass that occurred in all five decades and spatially overlapped with one another.";
String Title "Northeast Fisheries Science Center \"Fish Species Through Time\" Trawl Dataset[TG2].";
String title "Northeast Fisheries Science Center \"Fish Species Through Time\" Trawl Dataset[TG2].";
Float64 Westernmost_Easting -76.39011;
}
}
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