Characteristics of phytoplankton community and water net primary productivity response to the nutrient status of the Poyang Lake and Gan River, China

doi:10.1002/eco.2136

IGSNRR OpenIR

	Characteristics of phytoplankton community and water net primary productivity response to the nutrient status of the Poyang Lake and Gan River, China
	Jia, Junjie 1,2; Gao, Yang1,2 ; Song, Xianwei 1,2; Chen, Shibo 3
	2019-07-26
Source Publication	ECOHYDROLOGY
ISSN	1936-0584
Pages	15
Corresponding Author	Gao, Yang(gaoyang@igsnrr.ac.cn)
Abstract	Phytoplankton community characteristics and associative primary productivity, which reflect the ecological and nutritional status of water, are sensitive to environmental change. Particularly, nutrient inputs have a significant effect on phytoplankton growth and development as well as the biogeochemical cycle of watersheds. We investigated the phytoplankton community and nutrient status downstream from the Gan River into Poyang Lake. On a catchment scale, the phytoplankton communities and associative primary productivity from these two water bodies differed. The Poyang Lake phytoplankton community is composed of seven phyla of algae, whereas the Gan River is composed of six, the dominant phyla of phytoplankton being Bacillariophyta and Cryptophyta in Poyang Lake and Gan River, respectively. Phytoplankton abundance and primary productivity were significantly higher in Poyang Lake. Lower nitrogen (N) and phosphorous (P) concentrations and higher carbon (C) and silicon (Si) concentrations significantly affected the phytoplankton communities and primary productivity distribution in the entire Poyang Lake Basin. In this regard, we found a significant correlation between the phytoplankton community of the Gan River and P and N, whereas N and Si primarily regulated the phytoplankton community structure of Poyang Lake. Moreover, we found a significant correlation between DTN, Si/P, DIC/P, and primary productivity in the Gan River, whereas NH4+ jointly controlled primary productivity in Poyang Lake. Furthermore, the Margalef Richness Index (0.84-2.41) can be indicative of the environmental water quality status; and we determined that the most area of Poyang Lake and Gan River both were P restriction and moderately polluted, whereas the entrance of the Gan River into Poyang Lake was seriously polluted, which confirms that the Gan River is a main and crucial source of Poyang Lake pollution. Nanjishan Nature Reserve was already slightly eutrophic due to the high nutrient content and a large number of algae in the south-east of Poyang Lake, but the Gan River had good river fluidity, so some areas of the Gan River were oligotrophic.
Keyword	nutrient phytoplankton community Poyang Lake primary productivity the Gan River
DOI	10.1002/eco.2136
WOS Keyword	WET DEPOSITION ; CHLOROPHYLL ; PATTERNS ; MECHANISM ; NITROGEN ; QUALITY ; SILICON ; SUMMER ; DOM
Indexed By	SCI
Language	英语
Funding Project	National Nature Science Foundation of China[41871080] ; National Key Research Program of China[2016YFC0500202]
Funding Organization	National Nature Science Foundation of China ; National Key Research Program of China
WOS Research Area	Environmental Sciences & Ecology ; Water Resources
WOS Subject	Ecology ; Environmental Sciences ; Water Resources
WOS ID	WOS:000478187700001
Publisher	WILEY
Citation statistics
Document Type	期刊论文
Identifier	http://ir.igsnrr.ac.cn/handle/311030/58091
Collection	中国科学院地理科学与资源研究所
Corresponding Author	Gao, Yang
Affiliation	1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing, Peoples R China 3.Beijing Normal Univ, Sch Environm, Beijing, Peoples R China
Recommended Citation GB/T 7714	Jia, Junjie,Gao, Yang,Song, Xianwei,et al. Characteristics of phytoplankton community and water net primary productivity response to the nutrient status of the Poyang Lake and Gan River, China[J]. ECOHYDROLOGY,2019:15.
APA	Jia, Junjie,Gao, Yang,Song, Xianwei,&Chen, Shibo.(2019).Characteristics of phytoplankton community and water net primary productivity response to the nutrient status of the Poyang Lake and Gan River, China.ECOHYDROLOGY,15.
MLA	Jia, Junjie,et al."Characteristics of phytoplankton community and water net primary productivity response to the nutrient status of the Poyang Lake and Gan River, China".ECOHYDROLOGY (2019):15.

Files in This Item:
There are no files associated with this item.

If you have any objections to this item, please fill out the form below and the administrator will contact you as soon as possible.
Content:
Email：	*
Institution:
Verification Code:	Refresh

Any comments and suggestions are welcomed.
Title:	*
Content:
Email：	*
Verification Code:	Refresh

中国科学院地理科学与资源研究所机构知识库