Previous hypotheses had suggested that upwelled intrusions of nutrient-rich Gulf of Mexico slope water onto the West Florida Shelf (WFS) led to formation of red tides of Karenia brevis. However, coupled biophysical models of (1) wind- and buoyancy-driven circulation, (2) three phytoplankton groups (diatoms, K. brevis, and microflagellates), (3) these slope water supplies of nitrate and silicate, and (4) selective grazing stress by copepods and protozoans found that diatoms won in one 1998 case of no light limitation by colored dissolved organic matter (CDOM). The diatoms lost to K. brevis during another CDOM case of the models. In the real world, field data confirmed that diatoms were indeed thedominant phytoplankton after massive upwelling in 1998, when only a small red tide of K. brevis was observed.
Member of
Contributors
Publisher
American Geophysical Union
Date Issued
2003
Note
Language
Type
Genre
Extent
24 p.
Subject (Topical)
Identifier
3172985
Additional Information
Previous hypotheses had suggested that upwelled intrusions of nutrient-rich Gulf of Mexico slope water onto the West Florida Shelf (WFS) led to formation of red tides of Karenia brevis. However, coupled biophysical models of (1) wind- and buoyancy-driven circulation, (2) three phytoplankton groups (diatoms, K. brevis, and microflagellates), (3) these slope water supplies of nitrate and silicate, and (4) selective grazing stress by copepods and protozoans found that diatoms won in one 1998 case of no light limitation by colored dissolved organic matter (CDOM). The diatoms lost to K. brevis during another CDOM case of the models. In the real world, field data confirmed that diatoms were indeed thedominant phytoplankton after massive upwelling in 1998, when only a small red tide of K. brevis was observed.
An edited version of this paper was published by AGU. This publication may be cited as: Walsh, J. J., Weisberg, R. H., Dieterle, D. A., Ruoying H., Darrow, B. P., Jolliff, J. K., Lester, K. M., Vargo, G. A., Kirkpatrick, G. J., Fanning, K. A., Sutton, T. T., Jochens, A. E., Biggs, D. C., Nababan, B., Hu, C., & Muller-Karger, F. E. (2003). Phytoplankton response to intrusions of slope water on the West Florida Shelf: Models and observations. Journal of Geophysical Research, 108(C6), 3190. doi:10.1029/2002JC001406.
Florida Atlantic University. Harbor Branch Oceanographic Institute contribution #1552.
Continental shelf
Date Backup
2003
Date Text
2003
DOI
10.1029/2002JC001406
Date Issued (EDTF)
2003
Extension
FAU
FAU
admin_unit="FAU01", ingest_id="ing10138", creator="creator:BCHANG", creation_date="2011-08-04 14:00:05", modified_by="super:FAUDIG", modification_date="2014-02-11 11:12:41"
IID
FADT3172985
Issuance
single unit
Organizations
Attributed name: Harbor Branch Oceanographic Institute
Person Preferred Name
Walsh, John J.
creator
Physical Description
24 p.
Title Plain
Phytoplankton response to intrusions of slope water on the West Florida Shelf: Models and observations
Origin Information
American Geophysical Union
2003
single unit
Title
Phytoplankton response to intrusions of slope water on the West Florida Shelf: Models and observations
Other Title Info
Phytoplankton response to intrusions of slope water on the West Florida Shelf: Models and observations