Marine-Life Data and Analysis Team Fish Biomass

Included species: Alewife, American eel, American shad, Atlantic halibut, Atlantic sturgeon, Atlantic wolffish, Black sea bass, Blueback herring, Cusk, Hickory shad, Horseshoe crab, Northern shrimp, Ocean pout, Sand tiger, Sea scallop, Striped bass, Tautog, Thorny skate, Tilefish, Winter flounder, Witch flounder

cdm_data_type = Grid
VARIABLES (all of which use the dimensions [latitude][longitude]):
fish_biomass_nefsc_2010_END_FALL_ASMFC_FMPs
fish_biomass_nefsc_2010_END_FALL_Abundance_Vulnerable_to_Climate_Changes
fish_biomass_nefsc_2010_END_FALL_All
fish_biomass_nefsc_2010_END_FALL_Demersal
fish_biomass_nefsc_2010_END_FALL_Diadromous
fish_biomass_nefsc_2010_END_FALL_Distribution_Vulnerable_to_Climate_Changes
fish_biomass_nefsc_2010_END_FALL_EFH_Species
fish_biomass_nefsc_2010_END_FALL_Forage
fish_biomass_nefsc_2010_END_FALL_Highly_Migratory_Species
fish_biomass_nefsc_2010_END_FALL_MAFMC_FMPs
fish_biomass_nefsc_2010_END_FALL_NEFMC_Skates
fish_biomass_nefsc_2010_END_FALL_NEFMC_multispecies
fish_biomass_nefsc_2010_END_FALL_NEFMC_small_mesh_multispecies
fish_biomass_nefsc_2010_END_SPRING_ASMFC_FMPs
fish_biomass_nefsc_2010_END_SPRING_Abundance_Vulnerable_to_Climate_Changes
fish_biomass_nefsc_2010_END_SPRING_All
fish_biomass_nefsc_2010_END_SPRING_Demersal
fish_biomass_nefsc_2010_END_SPRING_Diadromous
fish_biomass_nefsc_2010_END_SPRING_Distribution_Vulnerable_to_Climate_Changes
fish_biomass_nefsc_2010_END_SPRING_EFH_Species
fish_biomass_nefsc_2010_END_SPRING_Forage
fish_biomass_nefsc_2010_END_SPRING_Highly_Migratory_Species
fish_biomass_nefsc_2010_END_SPRING_MAFMC_FMPs
fish_biomass_nefsc_2010_END_SPRING_NEFMC_Skates
fish_biomass_nefsc_2010_END_SPRING_NEFMC_multispecies
fish_biomass_nefsc_2010_END_SPRING_NEFMC_small_mesh_multispecies


Marine-Life Data and Analysis Team Fish Species Core Biomass

The following 81 fish species were modeled: Acadian redfish, Alewife, American eel, American lobster, American plaice, American sand lance, American shad, Atlantic cod, Atlantic croaker, Atlantic halibut, Atlantic herring, Atlantic mackerel, Atlantic menhaden, Atlantic sharpnose shark, Atlantic sturgeon, Atlantic torpedo, Atlantic wolffish, Banded drum, Barndoor skate, Bay anchovy, Black sea bass, Blackbelly rosefish, Blueback herring, Bluefish, Bluntnose stingray, Bullnose ray, Butterfish, Capelin, Clearnose skate, Cunner, Cusk, Fourspot flounder, Goosefish, Gulf stream flounder, Haddock, Hickory shad, Horseshoe crab, Jonah crab, Little skate, Longfin squid, Longhorn sculpin, Northern sand lance, Northern shrimp, Northern kingfish, Northern pipefish, Northern puffer, Northern searobin, Northern shortfin squid, Ocean pout, Pigfish, Pinfish, Pollock, Red hake, Rosette skate, Roughtail stingray, Round herring, Sand tiger, Scup, Sea raven, Sea scallop, Silver hake, Smooth dogfish, Smooth skate, Southern stingray, Spiny butterfly ray, Spiny dogfish, Spotted hake, Spot, Striped anchovy, Striped bass, Striped searobin, Summer flounder, Tautog, Thorny skate, Tilefish, Weakfish, White hake, Windowpane, Winter flounder, Winter skate, Witch flounder, and Yellowtail flounder.

cdm_data_type = Grid
VARIABLES (all of which use the dimensions [latitude][longitude]):
fish_corearea_nefsc_2010_END_FALL_ATL_ASMFC_FMPs
fish_corearea_nefsc_2010_END_FALL_ATL_Abundance_Vulnerable_to_Climate_Changes
fish_corearea_nefsc_2010_END_FALL_ATL_All
fish_corearea_nefsc_2010_END_FALL_ATL_Demersal
fish_corearea_nefsc_2010_END_FALL_ATL_Diadromous
fish_corearea_nefsc_2010_END_FALL_ATL_Distribution_Vulnerable_to_Climate_Changes
fish_corearea_nefsc_2010_END_FALL_ATL_EFH_Species
fish_corearea_nefsc_2010_END_FALL_ATL_Forage
fish_corearea_nefsc_2010_END_FALL_ATL_Highly_Migratory_Species
fish_corearea_nefsc_2010_END_FALL_ATL_MAFMC_FMPs
fish_corearea_nefsc_2010_END_FALL_ATL_NEFMC_Skates
fish_corearea_nefsc_2010_END_FALL_ATL_NEFMC_multispecies
fish_corearea_nefsc_2010_END_FALL_ATL_NEFMC_small_mesh_multispecies
fish_corearea_nefsc_2010_END_FALL_MIDA_ASMFC_FMPs
... (61 more variables)


Marine-Life Data and Analysis Team Fish Species Richness

The following 81 fish species were modeled: Acadian redfish, Alewife, American eel, American lobster, American plaice, American sand lance, American shad, Atlantic cod, Atlantic croaker, Atlantic halibut, Atlantic herring, Atlantic mackerel, Atlantic menhaden, Atlantic sharpnose shark, Atlantic sturgeon, Atlantic torpedo, Atlantic wolffish, Banded drum, Barndoor skate, Bay anchovy, Black sea bass, Blackbelly rosefish, Blueback herring, Bluefish, Bluntnose stingray, Bullnose ray, Butterfish, Capelin, Clearnose skate, Cunner, Cusk, Fourspot flounder, Goosefish, Gulf stream flounder, Haddock, Hickory shad, Horseshoe crab, Jonah crab, Little skate, Longfin squid, Longhorn sculpin, Northern sand lance, Northern shrimp, Northern kingfish, Northern pipefish, Northern puffer, Northern searobin, Northern shortfin squid, Ocean pout, Pigfish, Pinfish, Pollock, Red hake, Rosette skate, Roughtail stingray, Round herring, Sand tiger, Scup, Sea raven, Sea scallop, Silver hake, Smooth dogfish, Smooth skate, Southern stingray, Spiny butterfly ray, Spiny dogfish, Spotted hake, Spot, Striped anchovy, Striped bass, Striped searobin, Summer flounder, Tautog, Thorny skate, Tilefish, Weakfish, White hake, Windowpane, Winter flounder, Winter skate, Witch flounder, and Yellowtail flounder.

cdm_data_type = Grid
VARIABLES (all of which use the dimensions [latitude][longitude]):
fish_richness_nefsc_2010_END_FALL_ASMFC_FMPs
fish_richness_nefsc_2010_END_FALL_Abundance_Vulnerable_to_Climate_Changes
fish_richness_nefsc_2010_END_FALL_All
fish_richness_nefsc_2010_END_FALL_Demersal
fish_richness_nefsc_2010_END_FALL_Diadromous
fish_richness_nefsc_2010_END_FALL_Distribution_Vulnerable_to_Climate_Changes
fish_richness_nefsc_2010_END_FALL_EFH_Species
fish_richness_nefsc_2010_END_FALL_Forage
fish_richness_nefsc_2010_END_FALL_Highly_Migratory_Species
fish_richness_nefsc_2010_END_FALL_MAFMC_FMPs
fish_richness_nefsc_2010_END_FALL_NEFMC_Skates
fish_richness_nefsc_2010_END_FALL_NEFMC_multispecies
fish_richness_nefsc_2010_END_FALL_NEFMC_small_mesh_multispecies
fish_richness_nefsc_2010_END_SPRING_ASMFC_FMPs
... (12 more variables)


Normalized Avian Abundance: Crustacean Eaters

For all species together and for each group of species, total abundance maps are calculated in a Geographic Information System (GIS) by stacking each individual species predicted annual abundance layers and summing the values of the pixels in each resulting "column". The result is the total predicted abundance of all individuals (of the included species) in that cell.

cdm_data_type = Grid
VARIABLES (all of which use the dimensions [latitude][longitude]):
abundance (Normalized Abundance)


Normalized Avian Core Abundance: Crustacean Eaters

For all species together and for each group of species, total abundance maps are calculated in a Geographic Information System (GIS) by stacking each individual species predicted annual abundance layers and summing the values of the pixels in each resulting "column". The result is the total predicted abundance of all individuals (of the included species) in that cell.

cdm_data_type = Grid
VARIABLES (all of which use the dimensions [latitude][longitude]):
coreabundance (Normalized Core Abundance)


Normalized Avian Core Abundance: Fish Eaters


Normalized Avian Richness: Crustacean Eaters

For all species together and for each group of species, total abundance maps are calculated in a Geographic Information System (GIS) by stacking each individual species predicted annual abundance layers and summing the values of the pixels in each resulting "column". The result is the total predicted abundance of all individuals (of the included species) in that cell.

cdm_data_type = Grid
VARIABLES (all of which use the dimensions [latitude][longitude]):
richness (Normalized Species Richness)


Northeast Fisheries Science Center "Fish Species Through Time" Trawl Dataset[TG2].

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.

cdm_data_type = Grid
VARIABLES (all of which use the dimensions [longitude][latitude][decade]):
Alewife_Fall_biomass (Alewife Fall biomass threshold)
Alewife_Spring_biomass (Alewife Spring biomass threshold)
AmericanShad_Fall_biomass (AmericanShad Fall biomass threshold)
AmericanShad_Spring_biomass (AmericanShad Spring biomass threshold)
AtlanticMackerel_Fall_biomass (AtlanticMackerel Fall biomass threshold)
AtlanticMackerel_Spring_biomass (AtlanticMackerel Spring biomass threshold)
BlackSeaBass_Fall_biomass (BlackSeaBass Fall biomass threshold)
BlackSeaBass_Spring_biomass (BlackSeaBass Spring biomass threshold)
... (20 more variables)


This dataset was created for the Northwest Atlantic Marine Ecoregional Assessment (NAMERA) in order to map soft sediments based on their grain size (in mm). This version (2) is an update of the original 2010 soft sediments layer using new data. THIS DATASET WAS NOT CREATED FOR NAVIGATIONAL PURPOSES AND AS SUCH SHOULD NOT BE USED FOR NAVIGATION.

cdm_data_type = Grid
VARIABLES (all of which use the dimensions [latitude][longitude]):
grainsize (Grain Size, mm)


Topography, ETOPO1, 0.0166667 degrees, Global (longitude -180 to 180), (Ice Sheet Surface)

ETOPO1 is a 1 arc-minute global relief model of Earth's surface that integrates land topography and ocean bathymetry. It was built from numerous global and regional data sets. This is the 'Ice Surface' version, with the top of the Antarctic and Greenland ice sheets. The horizontal datum is WGS-84, the vertical datum is Mean Sea Level. Keywords: Bathymetry, Digital Elevation. This is the grid/node-registered version: the dataset's latitude and longitude values mark the centers of the cells.

cdm_data_type = Grid
VARIABLES (all of which use the dimensions [latitude][longitude]):
altitude (m)