• Arctic SDI catalogue
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Demersal (groundfish) community diversity and biomass metrics in the Northern and Southern shelf bioregions

Conservation of marine biodiversity requires understanding the joint influence of ongoing environmental change and fishing pressure. Addressing this challenge requires robust biodiversity monitoring and analyses that jointly account for potential drivers of change. Here, we ask how demersal fish biodiversity in Canadian Pacific waters has changed since 2003 and assess the degree to which these changes can be explained by environmental change and commercial fishing. Using a spatiotemporal multispecies model based on fisheries independent data, we find that species density (number of species per area) and community biomass have increased during this period. Environmental changes during this period were associated with temporal fluctuations in the biomass of species and the community as a whole. However, environmental changes were less associated with changes in species’ occurrence. Thus, the estimated increases in species density are not likely to be due to environmental change. Instead, our results are consistent with an ongoing recovery of the demersal fish community from a reduction in commercial fishing intensity from historical levels. These findings provide key insight into the drivers of biodiversity change that can inform ecosystem based management.

The layers provided represent three community metrics: 1) species density (i.e., species richness), 2) Hill-Shannon diversity, and 3) community biomass. All layers are provided at a 3 km resolution across the study domain for the period of 2003 to 2019. For each metric, we provide layers for three summary statistics: 1) the mean value in each grid cell over the temporal range, 2) the probability that the grid cell is a hotspot for that metric, and 3) the temporal coefficient of variation across all years.

Simple

Date ( RI_366 )
2022-10-28
Date ( RI_367 )
2023-02-27
Date ( RI_368 )
2023-05-09
RI_415
  Government of Canada; Fisheries and Oceans Canada;Pacific Science/Ecosystem Science Division/Marine Spatial Ecology & Analysis Section - Patrick Thompson ( Research Biologist )
Institute of Ocean Sciences 9860 West Saanich Road P.O. Box 6000 , Sidney , British Columbia , V8L 4B2 , Canada
604-999-3490
Status
completed; complété RI_593
Maintenance and update frequency
notPlanned; nonPlanifié RI_542
Keywords
  • species richness
  • community biomass
  • marine spatial planning
  • biodiversity change
  • environmental change
  • groundfish
  • ecosystem-based management
  • species distribution models
Government of Canada Core Subject Thesaurus Thésaurus des sujets de base du gouvernement du Canada ( RI_528 )
  • Fisheries
  • Marine biology
  • Fisheries resources
  • Ecosystems
  • Temperature
Use limitation
Open Government Licence - Canada (http://open.canada.ca/en/open-government-licence-canada)
Access constraints
license; licence RI_606
Use constraints
license; licence RI_606
Spatial representation type
grid; grille RI_636
Metadata language
eng; CAN
Character set
utf8; utf8 RI_458
Topic category
  • Biota
Begin date
2003
End date
2019
N
S
E
W
thumbnail


Reference system identifier
http://www.epsg-registry.org / EPSG:3005 /
Distribution format
  • TIFF ( unknown )

RI_412
  Government of Canada; Fisheries and Oceans Canada;Pacific Science/Ecosystem Science Division/Marine Spatial Ecology & Analysis Section - Patrick Thompson ( Research Biologist )
Institute of Ocean Sciences 9860 West Saanich Road P.O. Box 6000 , Sidney , British Columbia , V8L 4B2 , Canada
604-999-3490
OnLine resource
Demersal (groundfish) community diversity and biomass metrics in the Northern and Southern shelf bioregions - TIFF ( HTTPS )

Dataset;TIFF;eng

OnLine resource
Data Dictionary ( HTTPS )

Supporting Document;CSV;eng

OnLine resource
References ( HTTPS )

Supporting Document;PDF;eng,fra

OnLine resource
Data Dictionary ( HTTPS )

Supporting Document;CSV;fra

OnLine resource
Demersal (groundfish) community diversity and biomass metrics in the Northern and Southern shelf bioregions - GIS Hub metadata ( HTTPS )

Supporting Document;PDF;fra

OnLine resource
Demersal (groundfish) community diversity and biomass metrics in the Northern and Southern shelf bioregions - GIS Hub metadata ( HTTPS )

Supporting Document;PDF;eng

OnLine resource
Demersal (groundfish) community diversity and biomass metrics in the Northern and Southern shelf bioregions ( ESRI REST: Map Server )

Web Service;ESRI REST;eng

OnLine resource
Demersal (groundfish) community diversity and biomass metrics in the Northern and Southern shelf bioregions ( ESRI REST: Map Server )

Web Service;ESRI REST;fra

File identifier
3f4e85af-cc34-4aab-8e25-b956a792739f XML
Metadata language
eng; CAN
Character set
utf8; utf8 RI_458
Hierarchy level
dataset; jeuDonnées RI_622
Date stamp
2023-05-09T19:19:42
Metadata standard name
North American Profile of ISO 19115:2003 - Geographic information - Metadata
Metadata standard version
CAN/CGSB-171.100-2009
RI_415
  Government of Canada; Fisheries and Oceans Canada;Pacific Science/Ecosystem Science Division/Marine Spatial Ecology & Analysis Section - Emily Rubidge ( Research Scientist )
Institute of Ocean Sciences 9860 West Saanich Road P.O. Box 6000 , Sidney , British Columbia , V8L 4B2 , Canada
604-822-8419
 
 

Overviews

overview
communitydiversity_thumbnail.jpg

Spatial extent

N
S
E
W
thumbnail


Keywords


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Associated resources

Not available


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