Northwest Calvert sea wrack temporal data, Central Coast, British Columbia (2016-2017)

This dataset contains the collection site locations, visit dates, and weights of each species of shore cast algae or seagrass found during each site visit.

Dead, shore-cast seaweeds and seagrasses (commonly called sea wrack) provide an important vector of marine-derived nutrients to low productivity terrestrial environments, such as beaches. However, little is known about the processes that facilitate wrack transport, deposition, and accumulation in coastal temperate British Columbia. Throughout the course of one year, I visited three sites on a bi-monthly basis to document temporal changes in wrack biomass and species composition. At each site, wrack was measured along 12 permanent 1-meter wide belt-transects. The transects ran perpendicular to the water's edge, originating at the forest-beach interface and extending to the ocean at low tide. I found wrack biomass to be similar throughout all four seasons, wrack species composition, however, varied. My results suggest sea wrack is a consistent vector of potential nutrients from the marine to the terrestrial environment in British Columbia. Detailed methods and conclusions in the MSc thesis found in the linked folder.

Sara Wickham – University of Victoria, Brian Starzomski – University of Victoria; John Reynolds – Simon Fraser University; Chris Darimont – University of Victoria

Access and Use

Licence: Appropriate credit must be given to Hakai Institute and the authors of the dataset.

Data and Resources


Metadata Created October 26, 2018, 22:48 (UTC)
Metadata Updated October 26, 2018, 22:48 (UTC)
Reference Date(s) 2018-02-02 (Creation)
Frequency of Update
Metadata Date September 25, 2018, 16:38 (UTC)
Temporal Extent Begin June 1, 2016, 00:00 (UTC)
Temporal Extent End April 30, 2016, 00:00 (UTC)

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Dataset extent

Map data © OpenStreetMap contributors

Additional Info

Field Value
Contact Email
encoding utf8
metadata-language eng
progress completed
resource-type dataset
Responsible Party Hakai Institute (Point of Contact)
spatial-reference-system 32609