Nearshore substrate classification - Northwest Calvert Island, BC (2015-2017)

This layer contains polygons outlining the substrate types present in the intertidal and shallow subtidal waters surrounding Northwest Calvert Island. Substrates were manually delineated using 9-10cm resolution orthomosaics using imagery captured at tide heights lower than +1.0 m mean low water. The orthomosaics were obtained using an unoccupied aerial system (UAS) and post-processed using the Pix4Dmapper software package (see attached UAS methods) and the substrates digitized in ESRI ArcGIS 10.5. Kelp layers were added using existing data generated as per the methods outlined in the linked dataset 'Kelp Canopy extent - Calvert Island - 2006-2016'. The combined kelp canopy extent from the years 2012, 2014, 2015 was used. For areas with high-density kelp, we assumed the substrate was rock. Areas covered with low-density kelp were also considered rock unless sand could be detected mixed with the rock and then the category of mixed was applied. Eelgrass extent was digitized from a towed underwater video system. Detailed methods for this procedure can be seen at the linked record, 'Eelgrass Extent 2014 - Central Coast'.

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Access and Use

Licence: Creative Commons Attribution 4.0
Limitations: Appropriate credit must be given to Hakai Institute and the authors of the dataset.

Data and Resources

Dates

Metadata Reference Date(s) September 23, 2021, 00:00 (UTC) (Publication)
September 23, 2021, 20:24 (UTC) (Revision)
Dataset Reference Date(s) January 16, 2018 (Publication)
Frequency of Update As Needed

Citation

Dataset extent

Map data © OpenStreetMap contributors

Additional Info

Field Value
Ocean Variables Other
Scope Dataset
Status On Going
Topic Category oceans
Maintenance Note Generated from https://cioos-siooc.github.io/metadata-entry-form
Point of Contact
  • Name: Hakai Geospatial Technology Team
    Affiliation: Hakai Institute
    Contact Info Email: data@hakai.org
    Role: Point of Contact
  • Name: Hakai Geospatial Technology Team
    Affiliation: Hakai Institute
    Contact Info Email: data@hakai.org
    Role: Point of Contact
  • Name: Hakai Geospatial Technology Team
    Affiliation: Hakai Institute
    Contact Info Email: data@hakai.org
    Role: Custodian
  • Name: Matthew Henderson
    Affiliation: Hakai Institute
    Role: Point of Contact
Responsible Party
  • Individual Name: Matthew Henderson
    Organisation Name / Affiliation: Hakai Institute
    Role: Processor
  • Individual Name: Matthew Henderson
    Organisation Name / Affiliation: Hakai Institute
    Role: Originator
  • Organisation Name / Affiliation: Hakai Institute
    Contact Info Email: data@hakai.org
    Role: Resource Provider
  • Organisation Name / Affiliation: Hakai Institute
    Contact Info Email: data@hakai.org
    Role: Owner
Spatial Extent {"type": "Polygon", "coordinates": [[[-128.18865863, 51.63201591], [-127.98747149, 51.63201591], [-127.98747149, 51.73504091], [-128.18865863, 51.73504091], [-128.18865863, 51.63201591]]]}
North Bounding Latitude 51.73504091
South Bounding Latitude 51.63201591
East Bounding Longitude -127.98747149
West Bounding Longitude -128.18865863
Temporal Extent
Vertical Extent Min: 0.0
Max: 500.0
Default Locale English
Citation identifier
Version
Associated Datasets