Individual-based modelling of Calanus sinicus population dynamics in the Yellow Sea
Authored by Luning Wang, Hao Wei, Harold P Batchelder
Date Published: 2014
DOI: 10.3354/meps10725
Sponsors:
Chinese National Natural Science Foundation
Platforms:
No platforms listed
Model Documentation:
Other Narrative
Flow charts
Mathematical description
Model Code URLs:
Model code not found
Abstract
Calanus sinicus is the dominant copepod species in the coastal waters of
China. We studied its population dynamics using an individual-based
model (IBM) based on physiological processes at the individual level.
The model includes modules describing development, growth, reproduction, mortality, diel vertical migration and diapause. Development, growth and
reproduction are affected mainly by temperature and food concentration.
Mortality includes routine mortality of stage plus density-dependent
mortality, and weight-dependent mortality for N1-C6 stages. Control of
seasonal diapause is based on lipid accumulation and lipid metabolism.
The model was applied in a 1-dimensional water column located in the
central Yellow Sea, and simulations showed that the population of C.
sinicus peaks twice in 1 yr, with the earlier peak depending strongly on
the phytoplankton bloom in spring, and the later (December) peak relying
on lipid-stored energy from the over-summering population dominated by
diapausing C5s. The model population of C. sinicus goes through 3
generations in 1 yr, and the over-summering population of diapausing C5s
consists of both first (G1) and second (G2) generation individuals.
Coupled with more extensive field observations of abundance and biomass
of C. sinicus, an IBM can be forced using output from an integrated
hydrodynamic-nutrient-phytoplankton model to examine the processes
responsible for the spatial-temporal variation of C. sinicus throughout
its range in the Yellow Sea.
Tags
Temperature
Growth-rate
Life-history
Body-size
Georges bank
Northwest atlantic
Cold bottom water
Egg-production
Marine copepods
Finmarchicus