[贵州小车河不同水文期浮游植物优势种生态位及种间关联]。

Q2 Environmental Science
Shuang-Yan Wang, Jing Xiao, Chun-Chun Chen, Jia-Xiang Pan, Shu-Chan Peng, Qiu-Hua Li
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引用次数: 0

摘要

为了解贵州小车河不同水文期浮游植物的生态位和种间关系,于2020 - 2022年采集了贵州小车河不同水文期(干湿期)的浮游植物样本。采用生态位宽度(Bi)、生态位重叠度(Oik)、方差比法(VR)、χ2检验(χ2)、AC检验和Jaccard指数(JI)分析浮游植物优势种的生态位和种间关联。结果表明:小车河共鉴定出浮游植物7门50种,优势种4门12种;生态位宽度和FG官能团组合分析表明,小车河水环境处于中等富营养化状态。优势种可分为宽生态位、中生态位和窄生态位,优势种生态位宽度在1.278 ~ 4.849之间。3年生态位重叠值无显著差异,Oik>;0.6的比例分别为50.00%(2020年)、42.86%(2021年)和53.49%(2022年),表明存在接近相同或更常见的物种以高度相似的方式占用环境资源。优势种总体上呈显著正相关,群落相对稳定。卡方检验显示,66种优势种中只有4对显著相关;AC检验显示,33对显著相关;Jaccard指数显示,41对显著相关,负相关大于正相关,表明小车河浮游植物群落处于演替的早期阶段。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
[Niche and Interspecific Association of Phytoplankton Dominant Species at Different Hydrological Periods in Xiaoche River, Guizhou Province].

To understand the niche and interspecific association of phytoplankton in different hydrological periods of the Xiaoche River in Guizhou Province, phytoplankton samples were collected in two different hydrological periods (dry period and wet period) from 2020 to 2022. The niche width (Bi),niche overlap(Oik),variance ratio method(VR),chisquare test(χ2), AC test, and Jaccard index (JI) were used to analyze the niche and interspecific association of phytoplankton dominant species. The results showed that a total of 7 phyla and 50 species of phytoplankton were identified in the Xiaoche River, with 4 phyla and 12 species being the dominant species. The combination analysis of niche width and FG functional group showed that the water environment of the Xiaoche River in a medium eutrophic state. The dominant species could be divided into broad niche species, medium niche species, and narrow niche species, and the niche width of the dominant species varied between 1.278 and 4.849. No significant difference exists in the three years of niche overlap value, with the proportion of Oik>0.6 being 50.00% (2020), 42.86% (2021), and 53.49% (2022), respectively, indicating that there were close to the same or more common species occupying environmental resources in a highly similar way. The dominant species showed a significant positive correlation overall, and the community was relatively stable. The chi-square test showed that only four pairs of 66 dominant species had significant associations; the AC test showed that 33 pairs had significant associations; and the Jaccard index showed that 41 pairs had significant associations, all of which showed more negative than positive associations, indicating that the phytoplankton community in the Xiaoche River was in the early stage of succession.

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来源期刊
环境科学
环境科学 Environmental Science-Environmental Science (all)
CiteScore
4.40
自引率
0.00%
发文量
15329
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