DFO Pacific Groundfish Synoptic Trawl Surveys
OBIS Canada

iOBIS and OBIS Canada

The DFO Pacific groundfish synoptic trawl surveys began in 2003 and are planned to continue indefinitely. Four study areas are defined within the spatial extents outlined here: west coast Vancouver Island (WCVI), Queen Charlotte Sound (QCS), Hecate Strait (HS) and west coast Haida Gwaii (WCHG). These areas together provide comprehensive coverage of the continental shelf and upper slope of the British Columbia coast. After the initial start up years, these surveys were conducted on a rotating biennial schedule with the Queen Charlotte Sound and Hecate Strait surveys conducted in odd-numbered years and the west coast Vancouver Island and west coast Haida Gwaii surveys conducted in even-numbered years. Each study area is stratified by depth and divided into a contiguous grid of 4 km2 blocks and from these blocks we randomly select a set of fishing locations allocated by depth strata. Catches of fish and invertebrates are completely sorted, weighed and identified to the lowest taxonomic level possible. This dataset is the OBIS version of the stock assessment survey. These data are for display on the OBIS portal and associated mapping programs and for download for end-user analysis. OBIS Schema concepts implemented in this data set are: RES_NAME, DATELASTMODIFIED, INSTITUTIONCODE, COLLECTIONCODE, SCIENTIFICNAME, CATALOGNUMBER, LATITUDE, LONGITUDE, BASISOFRECORD, KINGDOM, GENUS, SPECIES, YEARCOLLECTED, MONTHCOLLECTED, DAYCOLLECTED, TIMEOFDAY, TIMEZONE, MINIMUMDEPTH, MAXIMUMDEPTH, OBSERVEDINDIVIDUALCOUNT, PHYLUM, CLASSNAME, ORDERNAME, FAMILY, SUBGENUS, SUBSPECIES, SCIENTIFICNAMEAUTHOR, FIELDNUMBER, STARTYEARCOLLECTED, ENDYEARCOLLECTED, STARTMONTHCOLLECTED, ENDMONTHCOLLECTED, STARTDAYCOLLECTED, ENDDAYCOLLECTED, JULIANDAY, STARTJULIANDAY, ENDJULIANDAY, OBSERVEDWEIGHT, NOTES (TSN: value). For OBIS Schema concept details see http://v2.iobis.org/tech/provider/

N/A

Original data obtained from http://scomber.mar.dfo-mpo.gc.ca/digir/DiGIR.php and registered into iOBIS on 2011-05-09. This dataset on OBIS-SEAMAP is a subset of marine mammal, seabird and/or sea turtle records from the dataset on iOBIS (Total number of records: 58501) harvested into OBIS-SEAMAP on 2011-10-11

Rutherford, Kate. Pacific Groundfish Synoptic Trawl Surveys. In: GFBio, Fisheries and Oceans Canada PBS groundfish biological database. OBIS Canada, Bedford Institute of Oceanography, Dartmouth, Nova Scotia, Canada, 2011, Version 1, Digital. Retrieved from http://www.iobis.org

Data on iOBIS. http://iobis.org/mapper/?resource_id=2331, obtained on 2011-10-11

Original data source. http://scomber.mar.dfo-mpo.gc.ca/digir/DiGIR.php

Overview

Attributes described below represent those in the original dataset provided by the provider.
Only minimum required attributes are visible and downlodable online. Other attributes may be obtained upon provider's permission unless otherwise noteded below.

The attributes of this dataset are compatible with the OBIS Schema, then reformatted to the OBIS-SEAMAP schema. If you would like to get the data in the OBIS Schema, please visit iOBIS Portal.