Presentation Abstract

Heterosigma akashiwo is the most significant fish-killing algae species in British Columbia, and the Salish Sea historically has the most intense and prolonged H. akashiwo blooms in BC. There is strong interannual variation of H. akashiwo blooms in the Salish Sea that has been linked to decreased salinity from the Fraser River plume. Here we present data from weekly phytoplankton and environmental monitoring at Departure Bay by the Harmful Algae Monitoring Program (HAMP) from 2001 to 2017. Concentrations of H. akashiwo in Departure Bay are compared with Fraser River discharge, salinity, and temperature. Densest H. akashiwo blooms typically appear in mid-late June, with lesser blooms in July and late-August to mid-September in some years.

Session Title

Harmful Phytoplankton in the Salish Sea: Part II

Keywords

Harmful algae, Heterosigma, HABs

Conference Track

SSE5: Climate Change: Impacts, Adaptation, and Research

Conference Name

Salish Sea Ecosystem Conference (Seattle, WA : 2018)

Document Type

Event

SSEC Identifier

SSE5-142

Start Date

4-4-2018 4:00 PM

End Date

4-4-2018 4:15 PM

Type of Presentation

Oral

Contributing Repository

Digital content made available by University Archives, Heritage Resources, Western Libraries, Western Washington University.

Geographic Coverage

Salish Sea (B.C. and Wash.)

Rights

This resource is displayed for educational purposes only and may be subject to U.S. and international copyright laws. For more information about rights or obtaining copies of this resource, please contact University Archives, Heritage Resources, Western Libraries, Western Washington University, Bellingham, WA 98225-9103, USA (360-650-7534; heritage.resources@wwu.edu) and refer to the collection name and identifier. Any materials cited must be attributed to the Salish Sea Ecosystem Conference Records, University Archives, Heritage Resources, Western Libraries, Western Washington University.

Type

text

Language

English

Format

application/pdf

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Apr 4th, 4:00 PM Apr 4th, 4:15 PM

Interannual variation of the toxic raphidophyte Heterosigma akashiwo in Departure Bay (Nanaimo): data from the harmful algae monitoring program 2001-2017

Heterosigma akashiwo is the most significant fish-killing algae species in British Columbia, and the Salish Sea historically has the most intense and prolonged H. akashiwo blooms in BC. There is strong interannual variation of H. akashiwo blooms in the Salish Sea that has been linked to decreased salinity from the Fraser River plume. Here we present data from weekly phytoplankton and environmental monitoring at Departure Bay by the Harmful Algae Monitoring Program (HAMP) from 2001 to 2017. Concentrations of H. akashiwo in Departure Bay are compared with Fraser River discharge, salinity, and temperature. Densest H. akashiwo blooms typically appear in mid-late June, with lesser blooms in July and late-August to mid-September in some years.