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Space utilization by key species of the pelagic fish community in an upwelling ecosystem of the Mediterranean Sea
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Space utilization by key species of the pelagic fish community in an upwelling ecosystem of the Mediterranean Sea
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Space utilization by key species of the pelagic fish community in an upwelling ecosystem of the Mediterranean Sea
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Journal Article
Space utilization by key species of the pelagic fish community in an upwelling ecosystem of the Mediterranean Sea
2018
Overview
Most of the studies carried out in the past on economically important fish species rely on single species approach. Ecosystem dynamics are characterized by complex interaction among species, sharing common habitat needs and thus forming characteristic assemblages. The analysis of spatio-temporal variability of fish community, coupled to the analysis of spatial indices, provides a synthetic view of the fish community status evidencing, if any, the way a community changes. Such considerations drive also to the development of ecosystem-based fishery management paradigm. In the present study changes in pelagic fish community structure in an upwelling ecosystem of the central Mediterranean Sea during the last 10 years was analysed, by focusing the attention on the five most abundant small pelagic species: Engraulis encrasicolus, Sardina pilchardus, Sardinella aurita, Trachurus trachurus and Boops boops. Our results evidenced a quite stable community structure, characterized by spatial occupation strongly driven by ecosystem characteristics and modulated according to specie-specific behaviour. Obtained results lead us to hypothesize that the observed stability of community could be linked to the presence of different environments leading to efficient space partitioning and resources utilization among species.
