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Functions used in biological models and their influences on simulations

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Title Functions used in biological models and their influences on simulations
 
Creator Huiwang, Gao
Hao, Wei
Wenxin, Sun
Xuemei, Zhai
 
Description 230-237
The
processes taking into account in ,biogeochemical modelling are getting more
complex, but the photosynthesis, respiration, grazing of zooplankton on
phytoplankton, natural mortality are the most important. There are just a few
kinds of descriptions of respiration and natural mortality, whereas the
functional forms used to describe the photosynthesis-light relationship, the
nutrient limitation and zooplankton grazing are quite different in different
biogeochemical models. Several types of functions showing light and nutrient
limitation on photosynthesis and zooplankton grazing generally used in

biogeochemical
models are analysed. Based on a simple NPZD [nutrient (N), phytoplankton (P),
zooplankton (Z), and detritus (D)] biological model , the influences of different
functional types on model results are shown. It is indi cated that functional
forms may exert a great influence on model results. Simulations with different
expressions of photosynthesis showed that the highest values are more than 5 to
10 times larger than the lowest ones for nutrient, phytoplankton, zooplankton
and detritus. Different zooplankton grazing functions gave values of several
times difference for nitrogen,

phytoplankton and zooplankton.
Therefore, it is necessary and very important to choose optimal functions to fit
a specific study of marine ecosystem.
 
Date 2014-01-13T05:30:12Z
2014-01-13T05:30:12Z
2000-09
 
Type Article
 
Identifier 0975-1033 (Online); 0379-5136 (Print)
http://hdl.handle.net/123456789/25515
 
Language en_US
 
Rights CC Attribution-Noncommercial-No Derivative Works 2.5 India
 
Publisher NISCAIR-CSIR, India
 
Source IJMS Vol.29(3) [September 2000]