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首页> 外文期刊>Estuarine Coastal and Shelf Science >The influence of cold season warming on the mercury pool in coastal benthic organisms
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The influence of cold season warming on the mercury pool in coastal benthic organisms

机译：寒冷季节变暖对沿海底栖生物中汞库的影响

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One of the tendencies for climate changes in the southern Baltic region is towards the warming of the cold season (late autumn, winter, early spring), which leads to the disappearance of icing even in the coastal zone and affects the fluxes of chemicals in the surface sediments of the coastal zone. This will lengthen the period in which the deposited chemicals may become remobilized from the sediments into pore and near-bottom water. Studies into the mercury concentration in macrophyto- and macrozoobenthos were conducted at two stations in the coastal zone of the southern Baltic, in the Puck Lagoon, from January 2012 to May 2013. It was estimated that the mean annual Hg pool (mass of Hg in flora or fauna per m(-2) of sediments) in macrophytobenthos in a year without icing was higher by 30%, and in macrozoobenthos by 25%, compared to an estimated previous year in which the icing period lasted approximately 90 days (as was usual in the period between 1946 and 1991). Taking into account the combined total mass of flora and fauna, it was estimated that lack of icing on the lagoon increases the mean Hg pool in benthic organisms (macrophyto- and macrozoobenthos) by 30%, which in turn considerably increases the Hg load on the first levels of the trophic chain despite a decrease in Hg emissions. The warming of the cold season has a particular influence in areas where macroalgae species are predominant in the biomass over angiosperms. Of the zoobenthic taxa, Corophiumspp. exhibited a tendency for intense growth and Hg accumulation in late autumn. (C) 2016 Elsevier Ltd. All rights reserved.
机译：波罗的海南部地区气候变化的趋势之一是朝着寒冷季节（秋末，冬季，初春）变暖，这甚至导致沿海地区积冰的消失，并影响了该地区化学物质的通量。沿海地表沉积物。这将延长沉积的化学物质可能从沉积物中迁移到孔隙和近底部的水中的时间。 2012年1月至2013年5月，在帕克泻湖波罗的海南部沿海地区的两个站点对大型植物和大型动物中的汞浓度进行了研究。据估计，年平均汞池（汞的质量与之前估计的结冰时间持续约90天的前一年相比，在没有结冰的一年中，大型无底栖底栖动物的每m（-2）沉积物的动植物群或动物群要高出30％，而大型动物群则要高出25％。通常在1946年到1991年之间）。考虑到动植物的总质量，据估计，泻湖上没有结冰会使底栖生物（大型植物和大型动物）的平均汞池增加30％，这反过来又大大增加了底栖生物的汞负荷。尽管汞排放量减少，但营养链的第一级。寒冷季节的变暖对被子植物生物量中大型藻类物种占主导地位的地区具有特殊的影响。在动物底栖生物类群中，Corophiumspp。在深秋表现出强烈的生长和汞积累的趋势。 （C）2016 Elsevier Ltd.保留所有权利。

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