Community characteristics of phytoplankton and eutrophication assessment in Tianjin section, downstream of Haihe River Basin

IF 1.3 4区环境科学与生态学 Q3 ECOLOGY

Journal of Freshwater Ecology Pub Date : 2022-09-26 DOI:10.1080/02705060.2022.2118179

Yong Dou, W. Zhou

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引用次数: 2

Abstract

Abstract With the aim of exploring the features of the phytoplankton community and eutrophication status in the lower reaches of the Haihe River Basin near Tianjin, sampling surveys were carried out in May, July and September of 2021. The results showed 53 dominant phytoplankton species in the survey area, of which 36 species were found in May, while 28 were found both in July and September. Ten dominant species were highlighted in the surveys, mainly belonging to Cyanophyta, Chlorophyta, Bacillariophyta, and Cryptophyta. The regions with relatively higher levels of phytoplankton biomass and abundance were Duliujian River, Qilihai Wetland and New Chaobai River, while the highest species richness and biodiversity occurred in Yuqiao Reservoir, Duliujian River, New Chaobai River and Ji Canal. The highest TN content was observed in Duliujian River, and the highest TP, chl-a, CODMn and EI were recorded in New Chaobai River. In contrast, the region with the lowest level of eutrophication was Yuqiao Reservoir. Correlation analysis and RDA analysis showed that the eutrophication assessment indices affecting the phytoplankton community and distribution of dominant species were mainly TN, chl-a and CODMn in May and July, while TN, TP, chl-a, CODMn and EI were the most influential in September.

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海河下游天津段浮游植物群落特征及富营养化评价

摘要为了探讨天津附近海河流域下游浮游植物群落特征和富营养化状况，于2021年5月、7月和9月进行了抽样调查。结果显示，调查区内有53种优势浮游植物，其中5月发现36种，7月和9月发现28种。调查中重点介绍了10种优势物种，主要属于蓝藻门、绿藻门、硅藻门和隐藻门。浮游植物生物量和丰度相对较高的区域为独流涧河、七里海湿地和新潮白河，物种丰富度和生物多样性最高的区域为玉桥水库、独流涧江、新潮白江和济运河。独流涧河TN含量最高，潮白河TP、chl-a、CODMn和EI含量最高。相比之下，富营养化程度最低的地区是玉桥水库。相关性分析和RDA分析表明，5月和7月影响浮游植物群落和优势种分布的富营养化评价指标主要为TN、chl-a和CODMn，9月影响最大的是TN、TP、chl-a、CODMn和EI。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Freshwater Ecology 生物-湖沼学

CiteScore

2.20

自引率

7.70%

发文量

审稿时长

3 months

期刊介绍： The Journal of Freshwater Ecology, published since 1981, is an open access peer-reviewed journal for the field of aquatic ecology of freshwater systems that is aimed at an international audience of researchers and professionals. Its coverage reflects the wide diversity of ecological subdisciplines and topics, including but not limited to physiological, population, community, and ecosystem ecology as well as biogeochemistry and ecohydrology of all types of freshwater systems including lentic, lotic, hyporheic and wetland systems. Studies that improve our understanding of anthropogenic impacts and changes to freshwater systems are also appropriate.