Dataset

Pacific Multispecies Small Mesh Bottom Trawl Survey

OBIS Canada MeasurementOrFact Open in mapper Explore occurrences

An OBIS version of Fisheries and Oceans Canada (DFO) Pacific multispecies small mesh bottom trawl survey data from 1953-2024. Survey data are collected by DFO stock assessment staff during annual trawl surveys originally designed with the primary purpose of developing indices of abundance of commercial shrimp species. The survey data have now evolved to monitor trends and document all species encountered. SEE: Dunic, J.C. and Anderson, S.C. 2025. Assessing the quality of groundfish population indices derived from the Small-mesh Multi-species Bottom Trawl Survey. Can. Tech. Rep. Fish. Aquat. Sci. 3667: v + 40 p. https://doi.org/10.60825/rjyz-8w29

Citation
Stock Assessment and Research Division F A A D S, Flemming R (2025). Pacific Multispecies Small Mesh Bottom Trawl Survey. Version 3.2. Fisheries and Oceans Canada. Samplingevent dataset. https://doi.org/10.25607/bbcjzo
Published
July 11, 2025 at 16:56
License
This work is licensed under a Creative Commons Attribution (CC-BY) 4.0 License
URL
http://ipt.iobis.org/obiscanada/resource?r=obis_pacshrimp
Archive
https://ipt.iobis.org/obiscanada/archive.do?r=obis_pacshrimp

Contacts

Fishery and Assessment Data Section Stock Assessment and Research Division
Fisheries and Oceans Canada

Rob Flemming
Fisheries and Oceans Canada

Andres Araujo
Fisheries and Oceans

Shellfish Data Unit
Fisheries and Oceans Canada

1,672,179
total submitted occurrences
1,665,776
accepted occurrences
3,207,663
measurements and facts
704
taxa
434
species

Taxa

Missing and invalid fields

Field Missing Invalid
coordinateUncertaintyInMeters 1,672,179
100.0%
decimalLatitude 6,398
0.4%
decimalLongitude 6,398
0.4%
maximumDepthInMeters 1,672,179
100.0%
minimumDepthInMeters 1,672,179
100.0%

Quality flags

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

Flag Dropped Records
NO_DEPTH 1,672,179
100.0%
NO_COORD 6,398
0.4%
NO_ACCEPTED_NAME 2,822
0.2%
ON_LAND 2,627
0.2%
MARINE_UNSURE 20
0.0%
NOT_MARINE 5
0.0%

Measurement types

DNA derived data