Anthropogenic impact on water quality of Chilika lagoon RAMSAR site: A statistical approach

被引：67

作者：

Panigrahi S. ^{[1
,3
]}

Acharya B.C. ^{[1
,3
]}

Panigrahy R.C. ^{[2
]}

Nayak B.K. ^{[3
]}

Banarjee K. ^{[4
]}

Sarkar S.K. ^{[5
]}

机构：

[1] Marine Pollution Monitoring Cell, Regional Research Laboratory

[2] Department of Marine Sciences, Berhampur University

[3] Regional Research Laboratory

[4] Department of Statistics, St. Xavier's College, Calcutta

[5] Department of Marine Sciences, University of Calcutta, Calcutta, 35, Ballygunge Circular Road

来源：

Wetlands Ecology and Management | 2007年 / 15卷 / 2期

关键词：

Analysis of variance and covariance; Chilika lagoon; Chlorophyll-a; Nutrients; Physicochemical parameters; Principal component analysis;

D O I：

10.1007/s11273-006-9017-3

中图分类号：

学科分类号：

摘要：

This paper investigated the spatio-temporal variability of water quality parameters (transparency, salinity, dissolved oxygen, nutrients viz. NH 3-N, NO2-N, NO3- -N, PO 43 -P, total nitrogen, total phosphorous and chlorophyll-a) in Chilika lagoon during 2001-2003 in order to better understand its ecological characteristics. Marked spatial and seasonal variations were detected with respect to almost all parameters studied. Northern sector of the lagoon is more affected by the anthropogenic stress from the catchments than the southern sector. Addition of nitrogen and phosphorous compounds to the lagoon mainly occurred through the drainage from agricultural lands and river run off during the early months of paddy cultivating seasons. Phytoplankton productivity of the lagoon was nitrogen limited, as suggested by nitrogen to phosphorous ratio. Processes affecting the water quality of the lagoon system included agricultural drainage, sewage intrusion, macrophyte litter fall and exchange of water between lagoon and the sea (Bay of Bengal). Further in depth study pertaining to quantification of exogenous material input and their disposal is recommended to ensure proper management of the lagoon and its resources. © 2006 Springer Science+Business Media B.V.

引用

页码：113 / 126

页数：13

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