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Current state of overfishing and its regional differences in the Black Sea

机译:黑海过度捕捞的现状及其区域差异

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摘要

Long-term (1950-2006) changes of fish landings in combination with some ecosystem indicators are used to evaluate the status and sustainability of the Black Sea fishery. Following the depletion of large pelagic predator and demersal fish stocks during the 1950-1960s, the main fishery was targetted on small and medium pelagics that declined abruptly to ~200 kton (kton=10~3t) at 1989-1991 after a highly productive (~750 kton) but overfished state in the 1980s. Thereafter, total landings in all the Black Sea countries except Turkey remained at most 10% level of the previous phase. For Turkey, only the low cost anchovy fishery was able to maintain at the mean catch size of 368 ± 74 kton for 1992-2006 that however represented roughly twice of the maximum sustainable catch. The absence of fish within the western, eastern and northern regions and the presence of only a fluctuating heavily exploited anchovy fishery in the southern region during the last 20 years demand an immediate common ecosystem-based fishery management policy and actions by all the coastal states.
机译:长期(1950-2006年)鱼类着陆变化与一些生态系统指标结合在一起,用于评估黑海渔业的状况和可持续性。随着1950-1960年代中上层捕食性鱼类和深水鱼类种群的枯竭,主要捕捞对象是中小型中上层鱼类,在高产(1989-1991年)之后,中小型中上层鱼类突然下降至〜200吨(kton = 10〜3t)。 〜750吨),但在1980年代处于过度捕捞状态。此后,除土耳其外,所有黑海国家的总着陆量一直保持在上一阶段的最多10%的水平。对于土耳其来说,只有低成本的cho鱼渔业才能在1992-2006年将平均捕捞量维持在368±74吨,但这大约是最大可持续捕捞量的两倍。在过去的20年中,西部,东部和北部地区没有鱼类,而南部地区只有波动的大量被捕捞的cho鱼渔业存在,这要求所有沿海国家立即采取基于生态系统的共同渔业管理政策和行动。

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  • 来源
    《Ocean & coastal management》 |2012年第3期|p.47-56|共10页
  • 作者单位

    Institute of Marine Sciences, Middle East Technical University, PO Box 28, 33731 Erdemli, Turkey;

    Institute of Marine Sciences, Middle East Technical University, PO Box 28, 33731 Erdemli, Turkey;

    Institute of Marine Sciences, Middle East Technical University, PO Box 28, 33731 Erdemli, Turkey;

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