Ammonium Inhibition of Nitrate Uptake by Phytoplankton: Implications of Recent Experiments on Modelling
IR@C-MMACS: CSIR-Centre for Mathematical Modelling and Computer Simulation, Bangalore
View Archive Info| Field | Value | |
| Title |
Ammonium Inhibition of Nitrate Uptake by Phytoplankton:
Implications of Recent Experiments on Modelling
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| Creator |
K S, Yajnik
M K, Sharada |
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| Subject |
Ocean Modelling
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| Description |
Recent experiments on nitrogen dynamics by McCarthy et al1 in the Indian
Ocean during North East Monsoon have thrown new light on several aspects of
nitrogen uptake by phytoplankton. In particular, the inhibitory effect of
ammonium on the uptake of nitrate displays the properties of similarity and
saturation of inhibition of nitrate uptake with increasing ammonium. Since two
nutrient interaction relations currently in use in marine ecosystem models have
one of these two properties but not both, a rather general theoretical formulation is
presented here for a multi-nutrient environment. It is phenomenological in
character with similarity and hyperbolicity taken as two fundamental properties.
When it is applied to the nitrate-ammonium environment, the results are found to
agree rather well with the recent observations. The implications the interaction
relations on the f ratio are also discussed.
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| Publisher |
CSIR Centre for Mathematical Modelling and Computer Simulation
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| Date |
2003-01
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| Type |
Monograph
NonPeerReviewed |
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| Format |
application/pdf
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| Identifier |
http://cir.cmmacs.ernet.in/205/1/rrcm0201r.pdf
K S, Yajnik and M K, Sharada (2003) Ammonium Inhibition of Nitrate Uptake by Phytoplankton: Implications of Recent Experiments on Modelling. Technical Report. CSIR Centre for Mathematical Modelling and Computer Simulation , C-MMACS,Bangalore 560037,India. (Unpublished) |
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| Relation |
http://cir.cmmacs.ernet.in/205/
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