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A baseline study on trace element based sediment pollution and potential ecological risk of reef sediments of Musal, Manoli and Manoli putti Islands, Gulf of Mannar, India

Author:
Saravanan, P., Pradhap, D., Krishnakumar, S., Silva, Judith D., Vidyasakar, A., Sackaria, Merin, Godson, Prince S., Arumugam, K., Magesh, N.S.
Source:
Marine pollution bulletin 2018 v.133 pp. 117-123
ISSN:
0025-326X
Subject:
coasts, corals, environmental assessment, islands, lead, marine sediments, organic matter, particle size distribution, pollutants, risk, risk assessment, sediment contamination, sediment transport, trace elements, water pollution, India
Abstract:
The aim of the present study is to assess the baseline level of the trace element, sediment pollution and potential ecological risk of reef associated sediments of Musal, Manoli and Manoli putti Islands, Gulf of Mannar, India. The grain size distribution of the sediments is chiefly controlled by corals and broken shell debris. The distribution of lithoclastic fractions and element concentration are most probably derived from longshore sediment transport and fluvial process from nearby mainland. The enrichment of organic matter is chiefly controlled by mangrove litters and sea grasses. The concentration of lead in the marine sediments is subjected to sediment matrix, vicinity of the local pollutant sources and distance from the mainland coast. The ecological risk assessment clearly reveals that the sediments belong to the low risk category.
Agid:
6095678