Data · dataset · 2025
Available salmon biomass for British Columbia (1994-2021) at 1km resolution
Listed in Borealis
A 1 kilometre resolution map of available salmon biomass in kilograms averaged over 1994 to 2021 for the entire province of British Columbia.
Description
NAD83/BC Albers projection (EPSG: 3005). Created by linking the New Salmon Escapement Database System (Fisheries and Oceans Canada 2016, url: open.canada.ca/data/en/dataset/c48669a3-045b-400d-b730-48aafe8c5ee6) to the B.C. Freshwater Atlas (GeoBC 2010, url: www2.gov.bc.ca/gov/content/data/geographic-data-services/topographic-data/freshwater).
Salmon escapement counts for the five major species of anadromous salmon (Oncorhynchus gorbusha, Oncorhynchus keta, Oncorhynchus kisutch, anadromous Oncorhynchus nerka, Oncorhynchus tschawytscha) were converted to biomass in kilograms based on average spawner mass data by species from Service et al. (Service et al. 2019, url: doi.org/10.1111/1365-2656.12932). These biomass measurements were then matched by water feature code to spatial features in the Freshwater Atlas.
Read the rest (1 more)
We then interpolated total salmon biomass for all five species, averaged over the time of our study (1994 to 2021) using a Stewart gravity model (Stewart 1942, url: doi.org/10.2307/2784954) with a span of 50 km and a beta (distance decay) coefficient of 1.7, creating an output raster with a 1km resolution. Due to the overwhelming influence of the lower Fraser River population estimates and potential sampling bias (as the population is sampled again in upstream reaches), we removed escapement data from the Lower Fraser.
Links
Where it is published
- Dataverse dataset page borealisdata.ca/dataset.xhtml?persistentId=doi%3A10.5683%2FSP3%2FAMP2YN ↗
landing page · from borealisdata ca
- DOI doi.org/10.5683/sp3/amp2yn ↗
DOI / persistent id · from borealisdata ca
Catalogue records · 1
- Dataverse API borealisdata.ca/api/datasets/:persistentId/?persistentId=doi%3A10.5683%2FSP3%2… ↗
metadata API · from borealisdata ca
Topics
- Stated by source
- Earth and Environmental Sciences · Medicine, Health and Life Sciences
- From keywords
- Earth & Environmental Science · Landscape ecology · Life Sciences · Medicine & Health
Provenance · 1 source records, 12 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| Borealis | doi:10.5683/SP3/AMP2YN | 6 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| concepts[field].anzsrc:field:410206 | mapping · borealisdata ca | vocabulary-mapper@1.0.0 | keywords['landscape ecology'] |
| concepts[field].dataverse_subject:earth-and-environmental-sciences | source · borealisdata ca | connector:borealisdata_ca@1.0.0 | /subjects |
| concepts[field].dataverse_subject:medicine-health-and-life-sciences | source · borealisdata ca | connector:borealisdata_ca@1.0.0 | /subjects |
| concepts[field].local:field:earth-environmental | mapping · borealisdata ca | connector:borealisdata_ca@1.0.0 | /subjects |
| concepts[field].local:field:life-sciences | mapping · borealisdata ca | connector:borealisdata_ca@1.0.0 | /subjects |
| concepts[field].local:field:medicine-health | mapping · borealisdata ca | connector:borealisdata_ca@1.0.0 | /subjects |
| created_date | source · borealisdata ca | connector:borealisdata_ca@1.0.0 | |
| description | source · borealisdata ca | connector:borealisdata_ca@1.0.0 | /description |
| publication_date | source · borealisdata ca | connector:borealisdata_ca@1.0.0 | |
| title | source · borealisdata ca | connector:borealisdata_ca@1.0.0 | /name |
| updated_date | source · borealisdata ca | connector:borealisdata_ca@1.0.0 | |
| version_label | source · borealisdata ca | connector:borealisdata_ca@1.0.0 |