Science Keywords>BIOLOGICAL CLASSIFICATION
DFO Quebec Region Multispecies bottom trawl surveys (OBIS Canada)Entry ID: OBIS.DFO_Quebec_Groundfish
Abstract: Data collection containing the principle biological characteristics of fishes and invertebrates caught in trawl tows during stratified random sampling surveys carried out in the northern Gulf of St. Lawrence, NAFO Areas 4RST. The data provide a source of information used in preparing scientific advice on the stock status of demersal fishes and invertebrates in these areas.
The annual survey is ... carried out by Fisheries and Oceans Canada scientists on large trawlers and provides important information on the status of marine resources exploited in the estuary and northern Gulf of St. Lawrence. The main objective of the survey is to estimate the abundance and biomass of five important commercial species: Atlantic cod (Gadus morhua), Greenland halibut (Reinhardtius hippoglossoides), two redfishes (Sebastes fasciatus and Sebastes mentella), and northern shrimp (Pandalus borealis). During the past few years, the biologists have aimed at combining stock status and ecosystem information, demanding a greater effort in describing the catches of the other species of fish and invertebrates. The protocol of observation and sampling that was long time in place has gradually evolved into a greatly more detailed and complex protocol. Certain difficulties, however, have arisen during the application of this protocol in the correct identification of the dozen or so species caught at each sampling station.
Trawling gear: a four-sided shrimp trawl, the Campelen 1800, equipped with a Rockhopper footgear; the extension and codend were fit with a 12.7 mm knotless nylon lining; standard tows lasted 15 minutes on the bottom.
The OBIS view of this dataset includes only presence information for the various species at the survey station locations.
Purpose: Purpose: Fisheries and Oceans Canada, Quebec Region, Multidisiplinary Research Surveys carried out on the CCGS Teleost since 2004 using a bottom trawl to assess the demersal fish and shrimp in the northern Gulf of St. Lawrence.
These data are for display on the OBIS portal and associated mapping programs and for download for end-user analysis.
The following reports on the OBIS schema fields provided for in this dataset:
RES_NAME, DATELASTMODIFIED, INSTITUTIONCODE, COLLECTIONCODE, SCIENTIFICNAME, CATALOGNUMBER, LATITUDE, LONGITUDE, BASISOFRECORD, KINGDOM, GENUS, SPECIES, YEARCOLLECTED, MONTHCOLLECTED, DAYCOLLECTED, PHYLUM, CLASSNAME, ORDERNAME, FAMILY, SUBGENUS, SUBSPECIES, JULIANDAY, NOTES (AphiaID: value)
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Data Set Citation
Dataset Originator/Creator: Bernier, Denis, Diane Archambault, Roberta Miller
Dataset Title: DFO Quebec Region Multispecies bottom trawl surveys.
Dataset Series Name: OBIS Canada Digital Collections
Dataset Release Date: 2012
Dataset Release Place: Bedford Institute of Oceanography, Dartmouth, Nova Scotia, Canada
Dataset Publisher: OBIS Canada
Data Presentation Form: Digital
Start Date: 2004-08-16Stop Date: 2010-08-31
ATMOSPHERE > ALTITUDE > GEOPOTENTIAL HEIGHT
ATMOSPHERE > ATMOSPHERIC PRESSURE > SEA LEVEL PRESSURE
ATMOSPHERE > ATMOSPHERIC PRESSURE > SURFACE PRESSURE
ATMOSPHERE > ATMOSPHERIC TEMPERATURE > AIR TEMPERATURE
ATMOSPHERE > ATMOSPHERIC WATER VAPOR > HUMIDITY > RELATIVE HUMIDITY
ATMOSPHERE > ATMOSPHERIC WATER VAPOR > PRECIPITABLE WATER
ATMOSPHERE > ATMOSPHERIC WATER VAPOR > WATER VAPOR
ATMOSPHERE > ATMOSPHERIC WINDS > SURFACE WINDS > WIND SPEED
ATMOSPHERE > CLOUDS > CLOUD PROPERTIES > CLOUD FREQUENCY
ATMOSPHERE > CLOUDS > CLOUD RADIATIVE TRANSFER > CLOUD RADIATIVE FORCING
ATMOSPHERE > CLOUDS > CLOUD MICROPHYSICS > CLOUD OPTICAL DEPTH/THICKNESS
ATMOSPHERE > CLOUDS > CLOUD MICROPHYSICS > CLOUD PRECIPITABLE WATER
ATMOSPHERE > CLOUDS > CLOUD PROPERTIES > CLOUD TOP PRESSURE
ATMOSPHERE > CLOUDS > CLOUD PROPERTIES > CLOUD TOP TEMPERATURE
ATMOSPHERE > PRECIPITATION > PRECIPITATION AMOUNT
LAND SURFACE > SURFACE RADIATIVE PROPERTIES > REFLECTANCE
LAND SURFACE > SURFACE RADIATIVE PROPERTIES > THERMAL PROPERTIES > SURFACE TEMPERATURE
SPECTRAL/ENGINEERING > INFRARED WAVELENGTHS > INFRARED RADIANCE
SPECTRAL/ENGINEERING > VISIBLE WAVELENGTHS > VISIBLE RADIANCE
ATMOSPHERE > ATMOSPHERIC WINDS > BOUNDARY LAYER WINDS
ATMOSPHERE > ATMOSPHERIC CHEMISTRY > OXYGEN COMPOUNDS > OZONE > OZONE ABUNDANCE
ISO Topic Category
GEWEX > Global Energy and Water Cycle Experiment
ISCCP > International Satellite Cloud Climatology Project
ESIP > Earth Science Information Partners Program
WISP > Winter Icing and Storms Project
GCSS-DIME > GEWEX Cloud System Study Data Integration for Model Evaluation
REASON > Research, Education, and Applications Solution Network
Access Constraints None
Use Constraints None
Data Set Progress
Distribution Media: online WWW
Creation and Review Dates
DIF Creation Date: 2002-09-25
Last DIF Revision Date: 2009-08-26