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Impact of a catastrophic flood on the heavy metal pollution status and the concurrent responses of the bentho-pelagic community in a tropical monsoonal estuary

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Relation http://eprints.cmfri.org.in/14236/
https://www.sciencedirect.com/science/article/pii/S0025326X2030309X?via%3Dihub
https://doi.org/10.1016/j.marpolbul.2020.111191
 
Title Impact of a catastrophic flood on the heavy metal pollution status and the
concurrent responses of the bentho-pelagic community in a tropical
monsoonal estuary
 
Creator Vineetha, G
Kripa, V
Karati, Kusum Komal
Rehitha, T V
Vishal, C R
Vineetha Valsalan, K C
Madhavan, Manu
 
Subject Marine Pollution
Marine Environment
 
Description Consequences of a catastrophic flood on the habitat quality and the concurrent responses of the bentho-pelagic
community were studied in Cochin estuary, a eutrophic estuary along the southwest coast of India. The episodic
flood in 2018 led to a marked decline in the dissolved nutrients and heavy metal concentrations in water and
sediments of the estuary. The pre-flood phytoplankton abundance dominated by a bloom-forming species
Cerataulina bicornis experienced a significant drop after the flood. Contrarily, zooplankton and macrobenthos
responded favorably towards the flood-imposed habitat alterations. Higher susceptibility to heavy metal pollution
and increased grazing pressure from gelatinous carnivores restricted the abundance of Copepoda, the
dominant zooplankton taxon during pre-flood. The lower heavy metal concentration in the sediment after the
flood favored higher macrobenthic abundance and diversity with a conspicuous change in the community
structure from opportunistic polychaetes, indicators of pollution to molluscans and crustaceans, indicators of the
healthy benthic zones.
 
Date 2020
 
Type Article
PeerReviewed
 
Format text
 
Language en
 
Identifier http://eprints.cmfri.org.in/14236/1/Marine%20Pollution%20Bulletin_2020_Kripa%20V_Impact%20of%20a%20catastrophic%20flood%20on%20the%20heavy%20metal%20pollution%20status.pdf
Vineetha, G and Kripa, V and Karati, Kusum Komal and Rehitha, T V and Vishal, C R and Vineetha Valsalan, K C and Madhavan, Manu (2020) Impact of a catastrophic flood on the heavy metal pollution status and the concurrent responses of the bentho-pelagic community in a tropical monsoonal estuary. Marine Pollution Bulletin. pp. 1-15.