Response of bacteria to simulated upwelling phytoplankton blooms

Until recently, studies of the fate of primary production in coastal upwelling systems have focused mainly on export through sinking of particulate organic matter (POM). In week-long deck incubations conducted during the upwelling season off Oregon, a large accumulation of carbon-rich (C:N ≥ 16) dis...

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Bibliographic Details
Published in:Marine ecology. Progress series (Halstenbek) 2004-05, Vol.272, p.49-57
Main Authors: Wetz, Michael S., Wheeler, Patricia A.
Format: Article
Language:English
Subjects:
Animal and plant ecology
Animal, plant and microbial ecology
Bacteria
Biological and medical sciences
Diatoms
Fundamental and applied biological sciences. Psychology
Nitrates
Nitrogen
Nucleic acids
Ocean, Atmosphere
Oceans
Phytoplankton
Sciences of the Universe
Sea water
Sea water ecosystems
Surface water
Synecology
Upwelling water
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Summary:Until recently, studies of the fate of primary production in coastal upwelling systems have focused mainly on export through sinking of particulate organic matter (POM). In week-long deck incubations conducted during the upwelling season off Oregon, a large accumulation of carbon-rich (C:N ≥ 16) dissolved organic matter (DOM) occurred following nitrate depletion by diatom blooms. The response of bacterioplankton to the DOM release in the incubations was observed using flow cytometric analysis of abundances of bacteria with high nucleic acid (HNA) and low nucleic acid (LNA) content. Relatively small increases in the abundance of HNA bacteria were observed in nitrate-replete conditions (
ISSN:0171-8630
1616-1599
DOI:10.3354/meps272049