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Ecology Publications & Forms |
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Ecology Publications & Forms |
| Title | The Historical Prevalence of Cyanobacteria in Spanaway Lake, Pierce County, Washington |
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The Historical Prevalence of Cyanobacteria in Spanaway Lake, Pierce County, Washington (Number of pages: 19) (Publication Size: 1308KB)
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| Author(s) | W. Hobbs , E. Frame , F. Sweeney, I. Struewing, N. Sienkiewicz, J. Lu , E. Villegas and R. Labiosa | ||||
| Description | Spanaway Lake in Pierce County (Washington) experiences annual harmful cyanobacterial blooms that produce high concentrations of the toxin, microcystin. The goal of this project was to understand whether (1) cyanobacteria have been a dominant part of the lake phytoplankton historically (~150 years ago) or (2) microcystin was produced historically. A sediment core representing the last ~150 years was analyzed for fossil algal pigments, microcystin concentrations, and microcystin-producing genes. The pigment analysis of the sediments recorded a diverse cyanobacteria community in the lake, extending back to about 1850. Microcystin compounds (MCs) and copies of cyanobacterial 16S rRNA gene were measured throughout the sediment core. Overall, Spanaway Lake has a long history of cyanobacteria production; however, changes in the pigment abundance and microcystin-producing genes suggest that after 1985 the lake has had a greater dominance of cyanobacteria with higher levels of toxin production. |
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| Contact | Will Hobbs at 360-407-6764 or whob461@ecy.wa.gov | ||||
| Keywords | Spanaway Lake, qPCR, sediment core, microcystin, cyanobacteria, pigment | ||||
| WATERSHED | Water Resource Inventory Area 12 Chambers-Clover | ||||
| DATA | Environmental Information Management (EIM) #WHOB008 |
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| RELATED PUBLICATIONS | Title:
Prevalence and Persistence of Cyanotoxins in Lakes of the Puget Sound Basin: Cyanotoxin production in Spanaway Lake (Pierce County, Washington) during the summer of 2021 Addendum 2 to Quality Assurance Project Plan: Prevalence and Persistence of Cyanotoxins in Lakes of the Puget Sound Basin Exploring the Use of Fluorometric Sensors to Monitor Harmful Algal Blooms in Lakes Quality Assurance Project Plan Addendum: Prevalence and Persistence of Cyanotoxins in Lakes of the Puget Sound Basin The Prevalence of Cyanobacteria: A historical perspective from lake sediment Quality Assurance Project Plan: Prevalence and Persistence of Cyanotoxins in Lakes of the Puget Sound Basin |
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