Eelgrass (Z. marina) extent within the greater park ecosystem of Pacific Rim National Park Reserve eelgrass monitoring sites (2017, 2018) v1.0.0


This data package contains reports and datasets pertaining to mapping the spatial extent of eelgrass (Zostera marina) at several monitoring sites within the greater park ecosystem of Pacific Rim National Park Reserve located on the west coast of Vancouver Island, British Columbia, Canada. This work was a collaborative project between the Hakai Institute and the Pacific Rim National Park Reserve (PRNPR).

Monitoring sites were mapped using a small Remotely Piloted Aerial Systems (RPAS) (DJI Phantom Pro 3) during summer low tides in 2017 and 2018. Orthomosaics of each site were created using a Structure from Motion Multi-View Stereo (SfM-MVS) workflow within Pix4Dmapper software (Version 2.1.61, Pix4D) in Windows 10. For the 2017 survey, ground control points were collected for georeferencing the orthomosaics. This was not done in 2018 due to time limitations (please see reports for more details). The extent of eelgrass at each site was delineated using object-based image analysis (OBIA) with eCognition Developer software (eCognition Developer 9, 2014) and manual delineation (where necessary). Georeferenced towed underwater video (SplashCam Pro) data were collected at eelgrass monitoring sites during high tide to provide ground-truth data for the aerial analysis and delineation of eelgrass. The data package includes:

Temporal coverage: July 2017 (Broken Group Unit region) and May 2018 (Long Beach Unit region)

This data package is a component of the Hakai Institute’s Habitat Mapping program. The overarching objective of the Hakai Habitat Mapping program is to generate spatial inventories of coastal habitats, investigate how these habitats are changing through time and the drivers of that change.

The use of this dataset requires permission from both the PRNPR and the Hakai Institute. To see a copy of this data sharing permissions, see LICENCE.txt.

Please attribute material in this data package as: Reshitnyk, L. Y, and J. Yakimyshyn. (2021). Spatial extent of eelgrass (Zostera marina) beds from monitoring sites within the greater park ecosystem of Pacific Rim National Park Reserve in 2017 and 2018 mapped using remote piloted aerial systems (RPAS). Version 1.0. Hakai Institute. Dataset. [access date]) DOI:

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



Dataset extent

Metadata Reference Date(s) January 17, 2022 (Publication)
March 21, 2024 (Revision)
Data Reference Date(s) April 03, 2021 (Publication)
Frequency of Update As Needed

Responsible Party 1
Hakai Geospatial Technology Team
Hakai Institute ROR logo
  • Custodian
  • Owner
  • Point of Contact
Responsible Party 2
Hakai Institute ROR logo
  • Distributor
  • Publisher
  • Resource Provider
Responsible Party 3
Reshitnyk, Luba ORCID logo
Hakai Institute ROR logo
  • Custodian
  • Point of Contact
Responsible Party 4
Tula Foundation ROR logo

Field Value
Ocean Variables
  • Seagrass cover and composition
  • Other
Scope Dataset
Status On Going
Topic Category oceans
Maintenance Note Generated from
Spatial Extent [[[-126.0511576, 48.72717181], [-124.94565833, 48.72717181], [-124.94565833, 49.24536019], [-126.0511576, 49.24536019], [-126.0511576, 48.72717181]]]
North Bounding Latitude 49.24536019
South Bounding Latitude 48.72717181
East Bounding Longitude -124.94565833
West Bounding Longitude -126.0511576
Vertical Extent
Default Locale English
Citation identifier
  1. Nearshore
  2. Geospatial
Included in Data Catalogue
Included in Data Catalogue 1
Hakai Data Catalogue
Science on the Coastal Margin