Heat wave brings an unprecedented red tide to San Francisco Bay

Eos, Earth and Space Science News
By: , and 



An exceptional red tide in San Francisco Bay was observed on 8 September 2004. The red tide had chlorophyll concentrations approaching 200 mg/m3 (Figure 1) in red/purple surface streaks containing high abundances of the dinoflagellate Akashiwo sanguinea. Red tides and harmful algal blooms (HABs) are common features of coastal ecosystems, and their growing frequency is a suspected outcome of coastal eutrophication.

However, the authors have never observed a dinoflagellate bloom of this scale during 28 years of sampling in the nutrient-rich San Francisco Bay. Phytoplankton biomass along this transect is typically <5mg Chla/m3, and has never exceeded 21 mg Chla/m3 during summer-autumn.

Study Area

Publication type Article
Publication Subtype Journal Article
Title Heat wave brings an unprecedented red tide to San Francisco Bay
Series title Eos, Earth and Space Science News
DOI 10.1029/2005EO070003
Volume 86
Issue 7
Year Published 2005
Language English
Publisher AGU publications
Contributing office(s) San Francisco Bay-Delta, Pacific Regional Director's Office
Description 1 p.
First page 66
Last page 66
Country United States
State California
Other Geospatial San Francisco Bay
Online Only (Y/N) N
Additional Online Files (Y/N) N
Google Analytic Metrics Metrics page
Additional publication details