Record Details

Nitrogen and phosphorus requirements of an Alexandrium minutum bloom in the Penze' Estuary, France

DRS at CSIR-National Institute of Oceanography

View Archive Info
 
 
Field Value
 
Title Nitrogen and phosphorus requirements of an Alexandrium minutum bloom in the Penze' Estuary, France
 
Creator Maguer, J.-F.
Wafar, M.V.M.
Madec, C.
Morin, P.
Denn, E.E.
 
Subject algal blooms
nitrogen
phosphorus
comparative studies
Alexandrium minutum
 
Description During an intense (up to 33 x 10 sup(6) cells L sup(-1)) Alexandrium minutum bloom in the Penze estuary (France), total NO sub(3), NH sub(4), and PO sub(4) requirements of the bloom were, respectively, 184, 25, and 20 mu mol L sup(-1), with peak uptake rates of 43, 6, and 4.8 mu mol L sup(-1) d sup(-1). The measured ambient concentrations of NH sub(4) and PO sub(4) were far short of this peak demand, whereas those of NO sub(3) were far in excess, indicating that NO sub(3) supply is important for sustaining the bloom. Comparison of the measured NO3 uptake rates with advective fluxes indicates that a reduction of NO sub(3) concentrations in river waters to less than 200 Mu mol L sup(-1) would be necessary to contain the bloom in the Penze estuary. The role of NO3 was restricted to sustenance of the bloom, whereas warm conditions resulting in a water column stability seem to have triggered the bloom, and a self-shading, probably coupled with a phosphorus limitation, caused its decline
 
Date 2008-07-02T04:51:48Z
2008-07-02T04:51:48Z
2004
 
Type Journal Article
 
Identifier Limnology and Oceanography, Vol.49; 1108-1114p.
http://drs.nio.org/drs/handle/2264/1123
 
Language en
 
Rights Copyright [2004]. It is tried to respect the rights of the copyright holders to the best of the knowledge. If it is brought to our notice that the rights are violated then the item would be withdrawn.
 
Publisher American Society of Limnology and Oceanography