[结合生态网络表征白洋淀浮游生物的生态位和种间联系]。

Q2 Environmental Science
Xiao-Kang Huo, Yong-Gang Wang, Ling-Tong Zhou, Shu-Hang Wang, Xia Jiang, Ke Chen, Peng-Fei Wang
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引用次数: 0

摘要

为了解白洋淀浮游生物群落结构及其优势种的生态位特征,于 2022 年春季(3 月)、夏季(7 月)和秋季(9 月)在白洋淀开展了浮游生物采样调查。的浮游生物群落变化。通过构建生态网络图、非度量多维尺度分析(NMDS)和生态位宽度,分析了三个季节浮游生物群落的变化。用改进的列文斯公式和 Petraitis 指数评估了浮游动物优势种的生态位重叠度。利用卡方检验和种间连通系数判断优势种的种间连通性。结果表明,整个区域浮游生物的生态位宽度较低。浮游动物以轮虫为主,浮游植物以硅藻、蓝藻和绿藻为主。浮游生物群落结构有明显的季节性变化。与夏秋季节相比,春季浮游生物种类较少,物种间的连通性也较低。夏季浮游动物优势种的重叠率较高,种间竞争加剧,而浮游植物的种间重叠率在三个季节均处于较低水平。三个季节的浮游植物种间重叠程度均较低,存在明显的正相关(W > χ20.05)夏秋两季浮游植物之间存在明显的正相关,群落结构稳定。浮游动物和浮游植物的域间生态网络在秋季呈现较高的负相关比,尤其是浮游动物中的桡足类和桡足类与浮游植物中的叶绿体和蓝藻类之间的负相关比更高。白洋淀浮游生物种类丰富,季节差异明显。优势种主要为窄生态位。浮游生物群落总体上处于稳定状态,桡足类和衣壳类与绿藻和蓝藻之间存在较强的捕食关系。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
[Characterization of the Ecological Niche and Interspecific Connectivity of Plankton in Baiyangdian Lake by Combining Ecological Networks].

To understand the structure of the plankton community and the ecological niche characteristics of their dominant species, sampling surveys of plankton were conducted in Baiyangdian Lake in the spring (March), summer (July), and autumn (September) of 2022. The changes in the plankton community during the three seasons were analyzed by constructing ecological network diagrams, non-metric multidimensional scaling analysis (NMDS), and the ecological niche width. The niche overlap of zooplankton dominant species was evaluated by the improved Levins' formula and Petraitis' index. The interspecific connectivity of dominant species was judged using the chi-square test and interspecies connectivity coefficients. The results showed that the niche width of plankton in the whole area was low. Zooplankton was dominated by rotifers, and phytoplankton was dominated by diatoms, cyanobacteria, and green algae. There were significant seasonal changes in the community structures of plankton. Compared with that in summer and autumn, there were fewer species of plankton in spring and lower interspecies connectivity. The overlap of dominant species of zooplankton was high in summer, and the interspecific competition was intensified, whereas the interspecific overlap of phytoplankton was at a low level in all three seasons. There was a significant positive correlation (W > χ20.05) between phytoplankton in summer and autumn, and the community structure was stable. The interdomain ecological network of zooplankton and phytoplankton showed a high negative correlation ratio in autumn, especially between copepods and cladoceras of zooplankton and chlorophyta and cyanophyta of phytoplankton. The plankton species in Baiyangdian Lake were abundant, with obvious seasonal differences. The dominant species were mainly a narrow ecological niche. The plankton community was generally in a stable state, and there was a strong predation relationship between copepods and cladoceras and green algae and cyanobacteria.

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来源期刊
Huanjing Kexue/Environmental Science
Huanjing Kexue/Environmental Science Environmental Science-Environmental Science (all)
CiteScore
4.40
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15329
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