Distribution characteristics of phytoplankton functional groups and their relationship with environmental factors in Taihu Basin

被引：1

作者：

Minna L. ^{[1
,2
]}

Beili S. ^{[3
,4
]}

Bingchuan Z. ^{[5
]}

Ting S. ^{[5
]}

Kun C. ^{[6
]}

Xueyan L. ^{[6
]}

Yong Z. ^{[6
]}

Wei Z. ^{[7
]}

Junzhe S. ^{[5
]}

Hujun Z. ^{[5
]}

Yan L. ^{[6
]}

Xinxin L. ^{[1
]}

Yawen F. ^{[1
]}

Junyi Z. ^{[2
,5
]}

机构：

[1] Key Laboratory of Biodiversity of Aquatic Organisms, College of Life Science and Technology, Harbin Normal University, Harbin

[2] School of Environmental and Civil Engineering, Jiangnan University, Wuxi

[3] Wuxi Key Laboratory of Biochips, Southeast University Wuxi Branch, Wuxi

[4] Jiangsu Metabio Science A Technology Co., Ltd., Wuxi

[5] Jiangsu Wuxi Environmental Monitoring Center, Wuxi

[6] Jiangsu Environmental Monitoring Center, Nanjing

[7] Ctr. for Res. on Environ. Ecology and Fish Nutrient of Ministry of Agriculture and Rural Affairs, College of Fisheries and Life Science, Shanghai Ocean University, Shanghai

来源：

Hupo Kexue/Journal of Lake Sciences | 2022年 / 34卷 / 05期

关键词：

aquatic ecological management; environmental factors; functional group; phytoplankton; Taihu Basin;

D O I：

10.18307/2022.0506

中图分类号：

学科分类号：

摘要：

The study area locates in the Taihu Basin, and it spans across three provinces (Jiangsu, Zhejiang, Anhui) and the Shanghai Administrative Region. We sampled at 85 sites during Aug. and Sep. 2019, including lakes, rivers, streams and reservoirs, to investigate the effects of spatial and environmental factors on the distribution characteristics of phytoplankton functional groups (PFG) in Taihu Basin. A total of 250 phytoplankton taxa, belonging to 9 phyla, 13 classes, 28 orders, 57 families and 110 genera, were identified by the "artificial intelligence image recognition technology"for the first time, combined with traditional microscopy. The phytoplankton species composition was dominated by Chlorophyta (45.6% ), followed by Bacillariophyta ( 19.2% ) and Cyanophyta (16.4%). According to the PFG classification method, 31 functional groups were identified, respectively, with dominant function groups including M, SI, C, D, Y, G, MP, P, J, SN, F, TB, K, HI and Wl. The results showed that; 1) There were significant differences in the PFG composition among different water bodies in Taihu Basin, mainly from M, J, SI, Y, P and HI groups; 2) The PFG distribution in Taihu Basin showed certain spatial heterogeneous, and three cluster groups were found. Moreover, the corresponding species composition types are Cyanophyta, Cyanophyta-Chlorophyta-Bacillariophyta and Chlorophyta-Bacillariophyta-Cyanophyta. The dominant groups are M and SI groups, M, SI, P, j groups, P, SI, J, D and C groups, respectively; 3 ) Spatial factor plays a major role in the formation of phytoplankton community than environmental factor in Taihu Basin. Redundant analysis showed that CODMn, NO3-N, TN, SD, pH and DO were the main environmental factors affecting the PFG distribution. Over the past decade, the environmental management policy led by source pollution control has achieved remarkable results in the Taihu Basin; however, more effective prevention and control methods are expected to propose for controlling cya-nobacterial blooms in the future, and the control of organic pollutants and nitrogen should be paid more attention for aquatic ecological management in Taihu Basin during summer. More importantly, appropriate aquatic ecological management mode should be a-dopted to deal with different water types and different PFGs. © 2022 by Journal of Lake Sciences.

引用

页码：1471 / 1483

页数：12

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