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Chapter 14 - Trophic status and fate of nutrients and organic matter in the Vembanad estuary related to land use in the Pamba river and other contributing rivers. In: Ecohydrology of Kerala - River Catchments and Coastal Backwaters

  • Shilly Elizabeth David
  • Tim Jennerjahn
  • Soman Kunjupillai
  • Srikumar Chattopadhyay

Abstract

The major aim of this study is to assess the effects of river inputs of nutrients and organic matter on the ecology of the estuarine Vembanad Lake, a so-called backwater in Kerala, India, which is fed by the Pamba, Achankovil, Manimala and Meenachil rivers. Agriculture and settlement with mixed tree crops are the major land uses in the catchments, the effluents of which are transported downstream by the rivers. Other inputs resulting from human activities are sewage disposal from industry and households and effluents from the Sabarimala pilgrimage in the Pamba catchment. Temporal and spatial variations of nutrients and organic matter are related to seasonal variations of the monsoons in combination with temporal variations of human activities. The Vembanad estuary is the major sink for the river-derived nutrients and organic matter, hence temporarily suffering from eutrophication, as indicated by a large cover of the lake with water hyacinths.

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David S.E., Jennerjahn T., Kunjupillai S. and Chattopadhyay S. (2024) Chapter 14 - Trophic status and fate of nutrients and organic matter in the Vembanad estuary related to land use in the Pamba river and other contributing rivers. In: Gnana Thanga Vincent S., Jennerjahn T.C., Kunjupillai S. & Chattopadhyay S. (eds.). Ecohydrology of Kerala - River Catchments and Coastal Backwaters (pp. 223-237). 10.1016/B978-0-323-95606-2.00012-7

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Research topics
Date 15.11.2024
Pages 223-237
Book Title Ecohydrology of Kerala - River Catchments and Coastal Backwaters
Editors Gnana Thanga Vincent S., Jennerjahn T.C., Kunjupillai S. and Chattopadhyay S.
ISBN 978-0-323-95606-2
Open Access Closed Access
Open Access Status Closed Access
Eprints_link https://cris.leibniz-zmt.de/id/eprint/5576

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