PDF(Pubmed)
Abstract：
This study was aimed primarily at describing the planktonic assemblages with special attention to invasive and toxin-producing cyanobacterial species in the context of ecological and health threats. The second aim was to analyze the aspect of recreational pressure, which may enhance the cyanobacterial blooms, and, as a consequence, the negative changes and loss of planktonic biodiversity. This study was carried out in recreationally used Lake Sztynorckie throughout the whole growing season of 2020 and included an assessment of the abundance and biomass of phytoplankton (cyanobacteria and algae) in relation to environmental variables. The total biomass was in the range of 28-70 mg L-1, which is typical for strong blooms. The dominant filamentous cyanobacteria were Pseudanabaena limnetica, Limnothrix redekei, Planktolyngbya limnetica, and Planktothrix agarhii, and three invasive nostocalean species Sphaerospermopsis aphanizomenoides, Cuspidothrix issatschenkoi, and Raphidiopsis raciborskii. They can pose a serious threat not only to the ecosystem but also to humans because of the possibility of cyanobacteria producing cyanotoxins, such as microcystins, saxitoxins, anatoxin-a, and cylindrospermopsins, having hepatotoxic, cytotoxic, neurotoxic, and dermatoxic effects. The water quality was assessed as water bodies had bad ecological status (based on phytoplankton), were highly meso-eutrophic (based on zooplankton), and had very low trophic efficiency and low biodiversity.
摘要：
这项研究的主要目的是描述浮游组合，并在生态和健康威胁的背景下特别注意入侵和产生毒素的蓝细菌物种。第二个目的是分析娱乐压力的方面，这可能会增强蓝藻的水华，and,因此，浮游生物多样性的负面影响和丧失。这项研究是在2020年的整个生长季节中在休闲使用的Sztynorckie湖中进行的，其中包括对浮游植物（蓝细菌和藻类）的丰度和生物量与环境变量的关系进行评估。总生物量在28-70mgL-1的范围内，这对于强烈的花朵是典型的。优势的丝状蓝细菌是假单胞菌，Limnothrixredekei，浮游喉炎，和Planktothrixagarhii，和三个入侵的鼻祖物种，Cuspidothrixissatschenkoi，和raphiopsisraciborskii。它们不仅会对生态系统构成严重威胁，也会对人类构成严重威胁，因为蓝藻可能会产生蓝毒素，如微囊藻毒素，类毒素,Anatoxin-a,和圆柱精子视蛋白，有肝毒性，细胞毒性，神经毒性,和皮肤毒性作用。水质被评估为水体具有不良的生态状况（基于浮游植物），高度中观营养(基于浮游动物)，营养效率很低，生物多样性也很低。
