Historical changes of the Mediterranean Sea ecosystem: modelling the role and impact of primary productivity and fisheries changes over time.

12), Ecosim had difficulties reflecting observed variations in their biomass, although suggesting a decreasing trend for both species.

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On the contrary, in the Ionian Sea and Eastern Mediterranean Sea, the community indicators (except for forage fishes in the Ionian that showed a weak negative correlation) were highly significant and positively correlated ( Fig. 8 ).

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To estimate an overall trend of number of fishing vessels for the 1950–2010 period, for those countries with missing years, we assumed same trends as observed by Greer 31 who reported the number of fishing vessels for each country of the world for 1950–2010.

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