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Plankton bioindicators of environmental conditions in coastal lagoons

机译：沿海泻湖环境条件中的浮游生物指标

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Coastal lagoons are characterised by strong spatial gradient of environmental parameters, especially hypersalinity, and are prone to anthropogenic disturbance. The Coorong (South Australia) is an inverse estuarine coastal lagoon separated from the sea by sand dunes. It is exposed to extreme water quality changes that affect its aquatic communities. Here, we used plankton as indicators of extreme environmental fluctuations to monitor and manage the environmental health of such complex systems. We defined the relationship of different plankton communities with water quality fluctuations and determined plankton species suitable for monitoring the ecosystem health. Two distinct communities of phytoplankton and zooplankton were identified, with salinity and nutrients being the principal factors impacting species distribution. Thus, two sets of indicator species were selected based on the different communities observed. Polychaete and gastropod larvae were positive indicators, showing salinity range restriction of brackish to marine. The distribution Acartia cf. fancetti represented healthy hypersaline conditions (salinity 40-60), while Cyclophora sp. and Scrippsiella sp. were negative indicators, correlating with extreme salinity and ammonia levels. The implementation of planktonic organisms as environmental indicators provided a constructive tool for the management of ecosystem health of the Coorong and will be applicable to similar coastal lagoons. (C) 2016 Elsevier Ltd. All rights reserved.
机译：沿海泻湖的特征是环境参数的空间梯度很强，特别是高盐度，并且容易受到人为干扰。库隆（南澳大利亚）是一个逆河口沿海泻湖，被沙丘与海隔开。它面临着影响其水生生物的极端水质变化。在这里，我们使用浮游生物作为极端环境波动的指标，以监控和管理此类复杂系统的环境健康。我们定义了不同浮游生物群落与水质波动之间的关系，并确定了适合监测生态系统健康的浮游生物种类。确定了两个不同的浮游植物和浮游动物群落，盐度和营养是影响物种分布的主要因素。因此，根据观察到的不同群落选择了两组指示剂物种。多毛et和腹足纲幼虫是阳性指标，表明咸度范围限制了淡咸对海洋。分布A螨比照。 fancetti代表健康的高盐血症（盐度40-60），而Cyclophora sp。和链霉菌属。是阴性指标，与极高盐度和氨水平相关。浮游生物作为环境指标的实施为库荣的生态系统健康管理提供了建设性工具，并将适用于类似的沿海泻湖。 （C）2016 Elsevier Ltd.保留所有权利。

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