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Relationships among upwelling, phytoplankton blooms, and phycotoxins in coastal Oregon shellfish
Citation
Tweddle, JF and Strutton, PG and Foley, DG and O'Higgins, L and Wood, AM and Scott, B and Everroad, RC and Peterson, WT and Cannon, D and Hunter, M and Forster, Z, Relationships among upwelling, phytoplankton blooms, and phycotoxins in coastal Oregon shellfish, Marine Ecology - Progress Series, 405, (April) pp. 131-145. ISSN 0171-8630 (2010) [Refereed Article]
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Copyright © 2010 Inter-Research
Official URL: http://www.int-res.com/
Abstract
Climatologies derived from satellite data (1998 to 2007) were used to elucidate seasonal
and latitudinal patterns in winds, sea surface temperature (SST), and chlorophyll concentrations (chl)
over the Oregon shelf. These were further used to reveal oceanographic conditions normally associated
with harmful algal blooms (HABs) and toxic shellfish events along the Oregon coast. South of
43° N, around Cape Blanco, summer upwelling started earlier and finished later than north of 43°N.
Spring blooms occur when light limitation is relieved, before the initiation of upwelling, and secondary,
more intense blooms occur approximately 2 wk after upwelling is established. North of 45°N,
SST and chl are heavily influenced by the Columbia River plume, which delays upwelling-driven
cooling of the surface coastal ocean in spring, and causes phytoplankton blooms (as indicated by
increased chl) earlier than expected. The presence of saxitoxin in coastal shellfish, which causes
paralytic shellfish poisoning, was generally associated with late summer upwelling. The presence of
domoic acid in shellfish, which leads to amnesic shellfish poisoning, was greatest during the transition
between upwelling and downwelling regimes. This work demonstrates that satellite data can
indicate physical situations when HABs are more likely to occur, thus providing a management tool
useful in predicting or monitoring HABs.
Item Details
| Item Type: | Refereed Article |
|---|---|
| Keywords: | Oregon coast · California Current · Upwelling · Bloom timing · Harmful algae, Paralytic shellfish poisoning · Domoic acid poisoning · Saxitoxin· |
| Research Division: | Earth Sciences |
| Research Group: | Oceanography |
| Research Field: | Biological oceanography |
| Objective Division: | Expanding Knowledge |
| Objective Group: | Expanding knowledge |
| Objective Field: | Expanding knowledge in the earth sciences |
| UTAS Author: | Strutton, PG (Professor Peter Strutton) |
| ID Code: | 68206 |
| Year Published: | 2010 |
| Web of Science® Times Cited: | 20 |
| Deposited By: | IMAS Research and Education Centre |
| Deposited On: | 2011-03-10 |
| Last Modified: | 2012-03-06 |
| Downloads: | 2 View Download Statistics |
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