Exploitation trends of the Mediterranean and Black Sea fisheries

Abstract

       The exploitation trends of Mediterranean and Black Sea fisheries stocks were examined using the total annual catches, the variability of the mean trophic level of the catch and fishing-in-balance index for the period 1970-2010. Overall catches increased rapidly to their maximum levels by the late 1980s and then declined and remained rather stable at around 75% of their highest levels. The mean trophic level of the catches followed a similar pattern to the overall catches with constant (except for 2005-2007) but steady decline since the late 1980s. The annual catches of 2636 stocks were also analysed for the period 1970-2010 and classified into exploitation categories according to the catch-based method of stock classification. In 2010, about 22% of the stocks were depleted, 40% were overexploited, 24% were fully exploited while undeveloped/developing fisheries were confined to 14%. All analyses indicate that the Mediterranean and Black Sea fisheries are gradually contracting to unsustainable levels.