Dataset
OBIS Canada MeasurementOrFact Open in mapper Explore occurrences
This data package contains datasets obtained from counting and measuring larval Dungeness crab (Metacarcinus magister) caught with light traps at various locations across the Salish Sea in British Columbia, Canada. This work is an ongoing collaborative project between the Hakai Institute and numerous community and institutional partners within the Sentinels of Change project led by Hakai Institute. The purpose of this project is to investigate the magnitude and timing of Dungeness larval delivery in the Salish Sea. This project began in 2022 with 20 light traps deployed across locations in the Canadian portion of the Salish Sea. The project expanded to 30 sites in 2023, going beyond the Salish Sea to other parts of the BC Coast. In 2024 there were 29 light trap sites. Light traps are deployed from April 15th to September 1st (although some started slightly later in the spring in some years). The traps operate on a timer which turns the light on during dark hours and is adjusted through the season. The traps are checked approximately every two days and Dungeness megalopae (final larval stage) are counted each time. The carapace widths of Dungeness megalopae are also measured each week. Initially, measurements were taken by hand using calipers, however this technique was switched starting July 15th 2022 to a photo technique which allows measurements to be taken later using software (ImageJ).
Citation: Earle, H., Krzus, L., & Whalen, M. (2024). Larval Dungeness crab arrival, abundance, and size along the coast of British Columbia (v1.0) [Data set]. Hakai Institute. https://doi.org/10.21966/36hp-7f40
Published: December 03, 2024 at 19:58
License: This work is licensed under a Creative Commons Attribution (CC-BY 4.0) License
URL: https://ipt.iobis.org/obiscanada/resource?r=hakai-sentinels-of-change-time-series
Contacts:
Matt Whalen
Hakai Institute
Heather Earle
Hakai Institute
Lauren Krzus
Hakai Institute
Tsleil-Waututh First Nation
Tsleil-Waututh First Nation
False Creek Friends
False Creek Friends
Fisheries and Oceans Canada
DFO
Friends of Cortes Island Society
Friends of Cortes Island Society
Surge Narrows School
Surge Narrows School
Discovery Passage Aquarium
Discovery Passage Aquarium
Hornby Island Diving
Hornby Island Diving
Association for Denman Island Marine Stewards
Association for Denman Island Marine Stewards
Gabriola Island Power Squadron
Gabriola Island Power Squadron
Gabriola Island Community
Gabriola Island Community
Quadra Island Community
Quadra Island Community
Bamfield Marine Sciences Centre
Bamfield Marine Sciences Centre
Cowichan Estuary Restoration and Conservation Association
Cowichan Estuary Restoration and Conservation Association
Tsawout First Nation
Tsawout First Nation
Shaw Centre for the Salish Sea
Shaw Centre for the Salish Sea
T'Sou-ke First Nation Marine Team
T'Sou-ke First Nation Marine Team
Pender Islands Conservancy
Pender Islands Conservancy
Mayne Island Conservancy
Mayne Island Conservancy
Saturna Ecological Education Centre
Saturna Ecological Education Centre
Galiano Conservation Association
Galiano Conservation Association
IMERSS
Institute for Multidisciplinary Research in the Salish Sea
Átl’ḵa7tsem/Howe Sound Marine Stewardship Initiative
Átl’ḵa7tsem/Howe Sound Marine Stewardship Initiative
Royal Vancouver Yacht Club - Wigwam Inn
Royal Vancouver Yacht Club - Wigwam Inn
Nicholas Sonntag Marine Education Centre
Nicholas Sonntag Marine Education Centre
Pender Harbour Observation Discovery Station
Pender Harbour Observation Discovery Station
Volunteer Powell River
Volunteer Powell River
shíshálh First Nation
shíshálh First Nation
Council of the Haida Nation
Council of the Haida Nation
Ministry of Water, Land, and Resource Stewardship
Ministry of Water, Land, and Resource Stewardship
Jamie's Whaling Station
Jamie's Whaling Station
Gorge Waterway Action Society
Gorge Waterway Action Society
| Field | Missing | Invalid | |
|---|---|---|---|
| coordinateUncertaintyInMeters | 13,906 |
|
The OBIS data quality flags are documented at https://github.com/iobis/obis-qc.
| Flag | Dropped | Records | |
|---|---|---|---|
| DEPTH_EXCEEDS_BATH | 488 |
|
|
| ON_LAND | 98 |
|