An individual-based model for simulating the ecosystem dynamics of Jiaozhou Bay, China
Authored by Yunne-Jai Shin, Philippe Verley, Yong Chen, Lei Xing, Chongliang Zhang, Haiqing Yu, Yiping Ren
Date Published: 2017
DOI: 10.1016/j.ecolmodel.2017.06.010
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Abstract
The Object-oriented Simulator of Marine ecoSystem Exploitation (OSMOSE)
is one of the end-to-end models developed for ecosystem dynamic
simulation and management strategy evaluation (MSE) in support of
ecosystem-based fishery management (EBFM). However, the implementation
of such integrated models has been limited due to lack of data, and
their performance in advising fisheries management has been rarely
evaluated. We developed an end-to-end model (OSMOSE-JZB) representing
organisms of high and low trophic levels in the Jiaozhou Bay, a
temperate bay in China with limited available data. We evaluated the
performance of the model for simulating the ecosystem dynamics by
comparing the model-predicted species biomass, size structure, trophic
level, and mortality with relevant data derived from scientific surveys
and literature. In general, the model-predicted species biomass and size
ranges were consistent with observations. However, the size structure of
the two dominant fish species showed some discrepancies between the
model simulations and observations. The predicted mean trophic levels
from OSMOSE-JZB were closer to the values derived from an Ecopath model
of the same region, compared to the values derived from empirical
isotope analysis. The model's output suggested that predation mortality
appeared to be the main source of mortality for younger individuals
compared to starvation and fishing mortality. This study suggests that
the OSMOSE-JZB performs well under a data-poor situation and can be
considered as a baseline ecosystem model for developing EBFM. (C) 2017
Elsevier B.V. All rights reserved.
Tags
Fishery management
resilience
Model Calibration
Performance evaluation
Populations
Lessons
Assemblages
Marine ecosystems
Southern
benguela
Pacific
Osmose
End-to-end model
Jiaozhou bay
Size-spectrum model
Trophic spectrum