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首页> 外文期刊>Marine ecology progress series >Aspiring to an altered stable state: rebuilding of bay scallop populations and fisheries following intensive restoration
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Aspiring to an altered stable state: rebuilding of bay scallop populations and fisheries following intensive restoration

机译：渴望改变稳定的状态：密集恢复后，海湾扇贝种群和渔业的重建

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Intensive efforts to restore bay scallop Argopecten irradians irradians populations and fisheries in the Peconic Bays of eastern Long Island, New York, USA, were begun in 2006, following a 12 yr period during which commercial fishery landings averaged 1 to 2% of historical levels seen prior to 1985 to 1995 brown tide algal blooms. Compared to 2005 to 2006, natural population densities of 0+ yr scallops in fall increased 16x by 2007 in Orient Harbor (OH), the focus of our restoration efforts; by 2009, densities in OH and other, unplanted, embayments had increased by 110x and up to 331x, respectively. Spatial and temporal patterns paralleled those documented for larval recruitment; highly significant correlations between commercial harvest levels and both baywide larval settlement and juvenile benthic densities were revealed. Official fishery landings were 13x those of pre-restoration levels by 2010 and have remained relatively stable through 2013. Following commencement of restoration, dockside revenues and economic benefit to the regional economy have increased by similar to US$2 million and $20 million, respectively; our calculations suggest that these figures are 40% of actual numbers. Population resurgence is not correlated to temporal changes in predator populations or submerged aquatic vegetation cover. We conclude that rebuilding of Peconic bay scallop populations and fisheries has been driven by dramatic increases in bay scallop larval supply emanating from our intensive restoration efforts. By definition, we cannot say that Peconic bay scallops have attained an alternate stable state, but it is clear that dramatic increases in populations, fishery landings, and economic value are possible in just a few years.
机译：在经历了长达12年的商业渔业平均登陆期达到历史水平的12年之后，美国纽约市于2006年开始着手努力恢复美国纽约长岛东部Peconic湾的海湾扇贝irradians irradians种群和渔业。 1985年至1995年之前，棕色潮汐藻华。与2005年至2006年相比，到了2007年，东方港口（OH）秋季0岁以上扇贝的自然人口密度增加了16倍，这是我们恢复工作的重点；到2009年，OH和其他（未种植的）巢穴的密度分别增加了110倍和高达331倍。时空格局与幼虫募集所记录的相似。揭示了商业收获水平与全湾幼虫定居和幼稚底栖生物密度之间的高度显着相关性。到2010年，官方渔业上岸量是恢复前水平的13倍，到2013年仍保持相对稳定。恢复开始后，码头收入和对该区域经济的经济利益分别增加了近200万美元和2000万美元；我们的计算表明，这些数字是实际数字的40％。种群的复苏与捕食者种群的时间变化或淹没的水生植被没有关系。我们得出的结论是，由于我们的大力恢复努力，海湾扇贝幼体供应的急剧增加推动了Peconic海湾扇贝种群和渔业的重建。根据定义，我们不能说Peconic海湾扇贝已经达到了另一种稳定状态，但是很明显，在短短几年内，人口，渔业着陆和经济价值可能会急剧增加。

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