Division of Polar Ocean Sciences, Korea Polar Research Institute, Incheon, 406-840, Republic of Korea.
Environ Sci Pollut Res Int. 2020 Nov;27(31):38769-38775. doi: 10.1007/s11356-020-09753-6. Epub 2020 Jul 6.
Multivariate dispersion has proven to be a broad β-diversity measure that shows the heterogeneity of environmental conditions. The dispersion patterns of pelagic ciliate communities were investigated at eight water depths in the northern Bering Sea of the western Arctic Ocean and Chukchi Sea. Multivariate analysis indicated that (1) pelagic ciliates showed significant variability in multivariate dispersion on a vertical scale, (2) dispersion patterns were shaped by both the species composition and individual abundance, (3) vertical variation in species occurrence was significantly related to nutrients and chlorophyll a, and (4) the dispersion measures at both species occurrence and species abundance resolutions were significantly negatively related to salinity and dissolved oxygen. This suggests that multivariate dispersion measures driven by both species composition and the individual abundance of pelagic ciliates may be a useful indicator of environmental heterogeneity in marine ecosystems.
多元离散度已被证明是一种广泛的β多样性度量方法，可反映环境条件的异质性。本研究在白令海北部和楚科奇海的 8 个水深点调查了浮游纤毛虫群落的多元离散模式。多元分析表明：(1)浮游纤毛虫在垂直尺度上的多元离散度存在显著变化；(2)离散模式由物种组成和个体丰度共同决定；(3)物种出现的垂直变化与营养物质和叶绿素 a 显著相关；(4)以物种出现和物种丰度分辨率为基础的离散度量与盐度和溶解氧显著负相关。这表明，由浮游纤毛虫的物种组成和个体丰度驱动的多元离散度量方法可能是海洋生态系统环境异质性的一个有用指标。
