Presentation Abstract

Phytoplankton are a critical component of estuarine food webs and changes in their community composition may indicate shifts in ecosystem-scale processes, such as grazing pressure or nutrient availability. However, seasonal variability of phytoplankton communities and potential links to ecosystem processes are not well understood in Padilla Bay. To meet this research need, we have established a monitoring program to investigate how phytoplankton communities change over time. These monitoring efforts are part of a reserve wide program that investigates water quality, zooplankton, and phytoplankton across four sites in Padilla Bay. The present study focuses on phytoplankton collected at an open water site, where phytoplankton abundance and composition (to genus) were determined using light microscopy for samples collected monthly since late 2016. Analyses indicate that Padilla Bay surface waters are composed of multiple genera of varying abundances and that these communities change throughout the year. Results from this investigation will allow us to explore temporal relationships between phytoplankton community composition and water quality parameters, which will improve our understanding of phytoplankton communities as indicators of ecosystem change in Padilla Bay and the greater Salish Sea.

Session Title

Track: Trophic Interactions - Zooplankton, Phytoplankton, Salmon, Forage Fish & Invasive Species – Posters

Conference Track

Trophic Interactions - Zooplankton, Phytoplankton, Salmon, Forage Fish & Invasive Species

Conference Name

Salish Sea Ecosystem Conference (2020 : Online)

Document Type

Event

SSEC Identifier

2020_abstractID_5742

Start Date

21-4-2020 9:00 AM

End Date

22-4-2020 4:45 PM

Geographic Coverage

Salish Sea (B.C. and Wash.)

Rights

Copying of this document in whole or in part is allowable only for scholarly purposes. It is understood, however, that any copying or publication of this document for commercial purposes, or for financial gain, shall not be allowed without the author's written permission.

Language

English

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Apr 21st, 9:00 AM Apr 22nd, 4:45 PM

Temporal variability of phytoplankton communities in Padilla Bay, Washington

Phytoplankton are a critical component of estuarine food webs and changes in their community composition may indicate shifts in ecosystem-scale processes, such as grazing pressure or nutrient availability. However, seasonal variability of phytoplankton communities and potential links to ecosystem processes are not well understood in Padilla Bay. To meet this research need, we have established a monitoring program to investigate how phytoplankton communities change over time. These monitoring efforts are part of a reserve wide program that investigates water quality, zooplankton, and phytoplankton across four sites in Padilla Bay. The present study focuses on phytoplankton collected at an open water site, where phytoplankton abundance and composition (to genus) were determined using light microscopy for samples collected monthly since late 2016. Analyses indicate that Padilla Bay surface waters are composed of multiple genera of varying abundances and that these communities change throughout the year. Results from this investigation will allow us to explore temporal relationships between phytoplankton community composition and water quality parameters, which will improve our understanding of phytoplankton communities as indicators of ecosystem change in Padilla Bay and the greater Salish Sea.