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Comparison of Monsoonal change of water quality parameters between 1983 and 2008 in a tropical estuary in Northeastern India: role of phytoplankton and community metabolism
Author(s) -
Dey Mitali,
Chowdhury Chumki,
Pattnaik Asim A.,
Ganguly Dipnarayan,
Mukhopadhyay Sandip K.,
De Tarun K.,
Jana Tapan K.
Publication year - 2013
Publication title -
marine ecology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.668
H-Index - 58
eISSN - 1439-0485
pISSN - 0173-9565
DOI - 10.1111/j.1439-0485.2012.00519.x
Subject(s) - biogeochemical cycle , environmental science , estuary , nutrient , ecosystem , fluvial , monsoon , phytoplankton , oceanography , water quality , biogeochemistry , hydrology (agriculture) , climate change , ecology , geology , biology , structural basin , paleontology , geotechnical engineering
Abstract Ongoing climate change and anthropogenic activities are introducing stressors that affect the structure and function of coastal ecosystems. This paper focuses on the fluvial fluxes and estuarine transport of nutrients from a tropical river (Mahanadi River) in Northeastern India and compares select nutrient and water quality parameters between 1983 and 2008. This estuary acts as a perennial source of CO 2 with a net annual flux to the atmosphere of about 135 tons. The non‐conservative fluxes showed a net annual removal of 650 and 140 tons of phosphorus and nitrogen from the water column, respectively. Negative biogeochemical feedbacks that decreased the availability of N and P in 2008 relative to 1983 levels indicate major changes in biogeochemical responses towards fluvial fluxes of nutrient.