{{nav.loginGreeting}}
  • Get data
      • Occurrences
      • GBIF API
      • Species
      • Datasets
      • Occurrence snapshots
      • Hosted portals
      • Trends
  • How-to
    • Share data

      • Quick-start guide
      • Dataset classes
      • Data hosting
      • Standards
      • Become a publisher
      • Data quality
      • Data papers
    • Use data

      • Featured data use
      • Citation guidelines
      • GBIF citations
      • Citation widget
      • Guides and documentation
  • Tools
    • Publishing

      • IPT
      • Data validator
      • GeoPick
      • New data model
      • GRSciColl
      • Suggest a dataset
      • Metabarcoding data toolkit
    • Data access and use

      • Hosted portals
      • Scientific collections
      • Data processing
      • Derived datasets
      • rgbif
      • pygbif
      • MAXENT
      • Tools catalogue
    • GBIF labs

      • Species matching
      • Name parser
      • Sequence ID
      • Relative observation trends
      • GBIF data blog
  • Community
    • Network

      • Participant network
      • Nodes
      • Publishers
      • Network contacts
      • Community forum
      • alliance for biodiversity knowledge
    • Volunteers

      • Mentors
      • Ambassadors
      • Translators
      • Citizen scientists
    • Activities

      • Capacity development
      • Programmes & projects
      • Training and learning resources
      • Data Use Club
      • Living Atlases
  • About
    • Inside GBIF

      • What is GBIF?
      • Become a member
      • Governance
      • Strategic framework
      • Work Programme
      • Funders
      • Partnerships
      • Release notes
      • Contacts
    • News & outreach

      • News
      • Subscribe
      • Events
      • Awards
      • Science Review
      • Data use
      • Thematic communities
  • User profile

Pacific Multispecies Small Mesh Bottom Trawl Survey

Dataset homepage

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

  1. 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.
  1. Holothuroidea
    rank: class
  2. Arthropoda
    rank: phylum
  3. Hydrozoa
    rank: class
  4. Animalio
    rank: kingdom
  5. Chromista
    rank: kingdom
  6. Nemertea
    rank: phylum
  7. Mesozoa
    rank: phylum
  8. Annelida
    rank: phylum
  9. Polychaeta
    rank: class
  10. Brachiopoda
    rank: phylum
  11. Hexacorallia
    rank: class
  12. Hoplonemertea
    rank: class
  13. Phaeophyceae
    rank: class
  14. Chordata
    rank: phylum
  15. Myxini
    rank: class
  16. Aves
    rank: class
  17. Bivalvia
    rank: class
  18. Ascidiacea
    rank: class
  19. Chondrostei
    rank: class
  20. Octocorallia
    rank: class
  21. Hemichordata
    rank: phylum
  22. Ctenophora
    rank: phylum
  23. Pycnogonida
    rank: class
  24. Turbellaria
    rank: class
  25. Petromyzonti
    rank: class
  26. Gastropoda
    rank: class
  27. Echinodermata
    rank: phylum
  28. Mollusca
    rank: phylum
  29. Demospongiae
    rank: class
  30. Pogonophora
    rank: phylum
  31. Holocephali
    rank: class
  32. Tracheophyta
    rank: phylum
  33. Porifera
    rank: phylum
  34. Pilidiophora
    rank: class
  35. Scaphopoda
    rank: class
  36. Thecostraca
    rank: class
  37. Plantae
    rank: kingdom
  38. Animalia
    rank: kingdom
  39. Magnoliopsida
    rank: class
  40. Protozoa
    rank: kingdom
  41. Actinopterygii
    rank: class
  42. Platyhelminthes
    rank: phylum
  43. Elasmobranchii
    rank: class
  44. Copepoda
    rank: class
  45. Thaliacea
    rank: class
  46. Echinoidea
    rank: class
  47. Polyplacophora
    rank: class
  48. Ochrophyta
    rank: phylum
  49. Scyphozoa
    rank: class
  50. Cephalopoda
    rank: class
  51. Ophiuroidea
    rank: class
  52. Branchiopoda
    rank: class
  53. Hexactinellida
    rank: class
  54. Malacostraca
    rank: class
  55. Phaeophyta
    rank: phylum
  56. Asteroidea
    rank: class
  57. Crinoidea
    rank: class
  58. Teleostei
    rank: class
  59. Cnidaria
    rank: phylum
  60. Ichthyostraca
    rank: class

Geographic Coverages

Pacific coast of Canada

Bibliographic Citations

Contacts

Fishery and Assessment Data Section Stock Assessment and Research Division
originator
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
What is GBIF? API FAQ Newsletter Privacy Terms and agreements Citation Code of Conduct Acknowledgements
Contact GBIF Secretariat Universitetsparken 15 DK-2100 Copenhagen Ø Denmark
GBIF is a Global Core Biodata Resource