Lu Xiaoteng, Yu Xiaowen, Burkovsky Igor, Esaulov Anton, Li Xiaolei, Jiang Yong, Mazei Yuri
Department of Biology, Shenzhen MSU-BIT University, 1 International University Park Road, Shenzhen 518172, PR China.
College of Marine Life Science & Institute of Evolution and Marine Biodiversity, Ocean University of China, Qingdao 266003, PR China.
Mar Pollut Bull. 2023 Mar;188:114656. doi: 10.1016/j.marpolbul.2023.114656. Epub 2023 Feb 1.
Arctic coastal ecosystems play a major role in global environmental system and have been altered significantly by climate changes. To better understanding the response of marine coastal ecosystems towards rapid Arctic climate changes, we examined the variation in diversity and community structure and provided insights into the co-occurrence network and community assembly of interstitial ciliates in the Kandalaksha Gulf of the White Sea from 2009 to 2019. Co-occurrence networks analysis indicated considerably high ration of positive correlations within a community that indicated low competition between interstitial ciliate species. Furthermore, we found that contribution of stochastic processes to the ciliate community assembly was insignificant. Compare with earlier data from the same ecosystem obtained in 1980s-1990s, the role of competitive factors is decreasing, and communities are becoming more spatially and temporally homogeneous. This community simplification is likely due to the response of the entire intertidal ecosystem to global climate change in Arctic.
北极沿海生态系统在全球环境系统中发挥着重要作用，并且已经因气候变化而发生了显著改变。为了更好地理解海洋沿海生态系统对北极快速气候变化的响应，我们研究了2009年至2019年白海坎达拉克沙湾间隙性纤毛虫的多样性和群落结构变化，并对其共存网络和群落组装提供了见解。共存网络分析表明，群落内正相关比例相当高，这表明间隙性纤毛虫物种之间的竞争较低。此外，我们发现随机过程对纤毛虫群落组装的贡献微不足道。与20世纪80年代至90年代从同一生态系统获得的早期数据相比，竞争因素的作用正在减弱，群落正变得在空间和时间上更加同质化。这种群落简化可能是由于整个潮间带生态系统对北极全球气候变化的响应。
