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Publication year : 0
Thematic : Fisheries
Language : English
Note
The concept of regime shift in marine
ecosystems has arisen in recent years. This study
reviews the origin, scientific meaning, driving forces
of marine ecosystem regime shrifts. Driving forces
include climate-ocean oscillation, fishing, introduced
species, river flow, eutrophication, disease and pollution.
Several controversial questions are discussed:
whether regime shift is just a climate oscillation
noise, the difficulties of separating driving forces, and
whether the impacts of ecosystem regime shift are
necessarily bad or good. The methods used to model
regime shifts in ecosystems are reviewed. These
methods include two types of models: general
circulation model and historical description. The
implications of regime shift in fisheries are considered,
including examples of impacts, consequences of
not considering regime shift, and difficulties in
incorporating regime shift into the current stock
assessment models. Possible future research needed
to understand and model regime shifts is discussed,
including strategies for fisheries management.
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Keywords : 2010 Targets
Encoded by : Pauline Carmel Joy Eje
