Eelgrass (Z. marina) extent at Gulf Islands National Park Reserve eelgrass monitoring sites (2017, 2018) v1.0.0

10.21966/t8hm-ge90

This data package contains the datasets and reports pertaining to mapping the spatial extent of Zostera marina at several monitoring sites within the Gulf Islands National Park Reserve, British Columbia, Canada. This work was a collaborative project between the Hakai Institute and the Gulf Islands National Park Reserve (GINPR).

Monitoring sites were mapped using small Remotely Piloted Aerial Systems (RPAS) (DJI Phantom Pro 3) during summer low tides (0.3-0.8 m) 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 and georeferenced using group control points collected concurrently during the surveys. 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:

  • The reports (.pdf) which describe project, data collection and processing methods and results for both 2017 and 2018 surveys.
  • Polygon shapefiles (.shp) of the extent of eelgrass (Z. marina) at each monitoring site.
  • Point shapefiles (.shp) of classified towed underwater video transects*.
  • A data dictionary (.csv) which describes the attributes of the shapefiles.

*The towed underwater video footage is not provided as a part of this data package but is available upon request.

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. These data were collected as a part of the Coastal BC Nearshore Habitat Mapping Project (a collaboration between Parks Canada and the Hakai Institute).

Permission to use this dataset must be granted by the Hakai Institute and Gulf Islands National Park Reserve to the individual who makes the data request. Data can only be used for the permitted purpose and are not to be shared or repurposed. Please refer to the README.txt file included in this data package.

Access and Use

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

Data and Resources

Citation

Keywords

Dataset extent

Metadata Reference Date(s) February 02, 2022 (Publication)
November 25, 2024 (Revision)
Data Reference Date(s) January 12, 2021 (Publication)
Frequency of Update As Needed

Responsible Party 1
Name
Reshitnyk, Luba ORCID logo
Affiliation
Hakai Institute ROR logo
Role
  • Custodian
  • Originator
  • Point of Contact
  • Principal Investigator
Responsible Party 2
Name
Rockwell, Lisa
Affiliation
Gulf Islands National Park Reserve ROR logo
Role
Author
Responsible Party 3
Name
Collyer, M. J. P.
Affiliation
Pacific Rim National Park Reserve ROR logo
Role
Author
Responsible Party 4
Name
Helms, Sibylla
Affiliation
Gulf Islands National Park Reserve ROR logo
Role
Author
Responsible Party 5
Affiliation
Hakai Institute ROR logo
Email
data@hakai.org
Role
  • Custodian
  • Distributor
  • Owner
  • Publisher
  • Resource Provider
Responsible Party 6
Name
Hakai Geospatial Technology Team
Affiliation
Hakai Institute ROR logo
Email
data@hakai.org
Role
  • Custodian
  • Distributor
  • Point of Contact
Responsible Party 7
Affiliation
Tula Foundation ROR logo
Role
Funder

Field Value
Ocean Variables Other
Scope Dataset
Status Completed
Topic Category oceans
Maintenance Note Generated from https://hakaiinstitute.github.io/hakai-metadata-entry-form#/en/hakai/qbqh6DF00XZq8MOpQ3kKkI9GUv43/-MXBNZnZGekFJcFFDcm8
Spatial Extent { "coordinates": [ [ [ -123.81789453, 48.48393505 ], [ -122.96096027, 48.48393505 ], [ -122.96096027, 49.05595865 ], [ -123.81789453, 49.05595865 ], [ -123.81789453, 48.48393505 ] ] ], "type": "Polygon" }
North Bounding Latitude 49.05595865
South Bounding Latitude 48.48393505
East Bounding Longitude -122.96096027
West Bounding Longitude -123.81789453
Vertical Extent
Min
0.0
Max
100.0
Default Locale English
Citation identifier
Code
https://doi.org/10.21966/t8hm-ge90
Projects
  1. Nearshore
  2. Geospatial
Included in Data Catalogue
Included in Data Catalogue 1
Name
Hakai Data Catalogue
Description
Science on the Coastal Margin
URL
https://catalogue.hakai.org