Tow, catch, length frequency, and biological information for fish caught during the annual September research vessel trawl surveys in the southern Gulf of St. Lawrence (NAFO Division 4T). Abundance indices and spatial distribution patterns of commercial and non-commercial groundfish.

Citation: DFO. (2019). DFO Gulf Region Groundfish Research Vessel Surveys. Version 4 In OBIS Canada Digital Collections. Bedford Institute of Oceanography, Dartmouth, NS, Canada. Published by OBIS, Digital http://www.iobis.org/. Accessed on –INSERT DATE

Published: March 30, 2022 at 15:00

URL: http://ipt.iobis.org/obiscanada/resource?r=obis_dfo_gulf_groundfishsurveys

Dan Ricard
Fisheries and Oceans Canada

OBIS Canada
OBIS Canada

123,206

occurrence records

190

taxa

137

species

Taxa

Missing and invalid fields

Field	Missing	Invalid
coordinateUncertaintyInMeters	123,206		100.0%
eventDate	123,206		100.0%
occurrenceStatus		44,254	35.9%
scientificNameID		123,206	100.0%

Quality flags

The OBIS data quality flags are documented at https://github.com/iobis/obis-qc.

Flag	Records
NO_MATCH	24,113	19.6%
WORMS_ANNOTATION_REJECT_AMBIGUOUS	4,453	3.6%
WORMS_ANNOTATION_RESOLVABLE	2,583	2.1%
WORMS_ANNOTATION_UNRESOLVABLE	2,574	2.1%
WORMS_ANNOTATION_NO_BIOTA	2,481	2.0%
DEPTH_EXCEEDS_BATH	480	0.4%
WORMS_ANNOTATION_RESOLVABLE_LOSS	113	0.1%
NO_ACCEPTED_NAME	33	0.0%

DFO Gulf Region Groundfish Research Vessel Surveys

Taxa

Missing and invalid fields

Quality flags

Measurement types

DNA derived data