Pacific Multispecies Small Mesh Bottom Trawl Survey
Citation
Stock Assessment and Research Division F A A D S, Flemming R (2025). Pacific Multispecies Small Mesh Bottom Trawl Survey. Version 3.1. Fisheries and Oceans Canada. Sampling event dataset https://doi.org/10.25607/bbcjzo accessed via GBIF.org on 2025-05-20.Description
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.
Sampling Description
Study Extent
A stock assessment program for the shrimp trawl fishery was developed concurrently with the change in management strategy implemented in 1997. Surveys were conducted in selected shrimp areas in 1997 and 1998 to obtain reliable biomass indices of abundance for key stocks.Sampling
The shrimp trawl fishery in British Columbia catches 7 species of shrimp belonging to the family Pandalidae.Quality Control
Scientific names associated with resource occurrence records have been mapped to recognized standards - marine taxa have been mapped to the World Register of Marine Species (WoRMS). The WoRMS codes, the AphiaIDs have been included as LSIDs in the occurrence record DwC field scientificNameID.Method steps
- To prepare this dataset for OBIS Canada publication, data was structured into an OBIS-compatible format using R and laid out in four tables: an Event Core, Occurrence Core and three Extended Measurement of Fact extensions. Defined vocabularies listed on the Natural Environment Research Council (NERC) Vocabulary Server (NVS) were used whenever possible.
Taxonomic Coverages
The top 20 species encountered, by weight, are: Pandalus jordani, Pink Shrimp (Smooth); Glyptocephalus zachirus, Rex Sole; Squalus suckleyi, North Pacific Spiny Dogfish; Lyopsetta exilis, Slender Sole; Microstomus pacificus, Dover Sole; Hydrolagus colliei, Spotted Ratfish; Thaleichthys pacificus, Eulachon; Pandalus eous, pink Shrimp (Spiny); Hippoglossoides elassodon, Flathead Sole; Atheresthes stomias, Arrowtooth Flounder; Citharichthys sordidus, Pacific Sanddab; Merluccius productus, Pacific Hake; Gadus Chalcogrammus, Walleye Pollock; Lycodes pacificus, Blackbelly Eelpout; Anoplopoma fimbria, Sablefish; Inanimate object(s), Inanimate Object(S); Pandalopsis dispar, Sidestripe Shrimp; Parophrys vetulus, English Sole; Eopsetta jordani, Petrale Sole; Raja (Beringraja) rhina, Longnose Skate. In at least the last 10 years, all species are identified to the highest taxonomic level possible.
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Geographic Coverages
Pacific coast of Canada
Bibliographic Citations
Contacts
Fishery and Assessment Data Section Stock Assessment and Research Divisionoriginator
position: Shellfish Data Unit
Fisheries and Oceans Canada
email: DFO.PACSDU-UDMCPAC.MPO@dfo-mpo.gc.ca
Rob Flemming
metadata author
position: Shellfish Data Unit program head
Fisheries and Oceans Canada
email: Rob.Flemming@dfo-mpo.gc.ca
Rob Flemming
administrative point of contact
position: Shellfish Data Unit program head
Fisheries and Oceans Canada
British Columbia
CA
email: Rob.Flemming@dfo-mpo.gc.ca
Andres Araujo
administrative point of contact
position: Crustacean program head
Fisheries and Oceans
CA
email: Andres.Araujo@dfo-mpo.gc.ca
Shellfish Data Unit
administrative point of contact
position: Shellfish Data Unit
Fisheries and Oceans Canada
email: DFO.PACSDU-UDMCPAC.MPO@dfo-mpo.gc.ca