Trace element concentrations and their potential ecological risk in the reef sediments of coral islands, Vembar group of islands, Gulf of Mannar, India

The present work was undertaken to assess the impact of trace element concentration and the status of potential ecological risk in the reef sediments of the Vembar group of islands, Gulf of Mannar Marine National Park, India. Totally, 114 reef sediments (surface) were collected from the Vembar group...

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Bibliographic Details
Published in:Marine pollution bulletin 2020-11, Vol.160, p.111607-111607, Article 111607
Main Authors: Pradhap, D., Gandhi, K. Sanjai, Magesh, N.S., Peter, T. Simon, Sadhu, C., Silva, Judith D., Godson, Prince S., Krishnakumar, S., Saravanan, P.
Format: Article
Language:English
Subjects:
Atolls
Calcium
Calcium carbonate
Calcium carbonates
Carbonates
Colonies
Ecology
Environmental risk
Gulf of Mannar
India
Islands
Load distribution
Marine invertebrates
National parks
Pollutant load
Pollution index
Pollution load
Reefs
Risk
Risk management
Sediment
Sediment load
Sediment pollution
Sediment pollution indices
Sediment samples
Sediments
Toxicity
Trace elements
Vembar group of islands
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Summary:The present work was undertaken to assess the impact of trace element concentration and the status of potential ecological risk in the reef sediments of the Vembar group of islands, Gulf of Mannar Marine National Park, India. Totally, 114 reef sediments (surface) were collected from the Vembar group of islands (Nallathanni Island – 36 samples; Upputhanni Island – 48 samples; Puluvinichalli Island-30 samples). The reef sediments are enriched with sand-sized calcareous particles. The calcium carbonate percentage (CaCO3) was primarily controlled by the distribution of coral colonies and available lithogenic grains. The pollution load index (PLI) reveals that the majority of the sediments fall under the unpolluted category. Moreover, the potential ecological risk (PERI) and sediment pollution index (SPI) reveals that the Vembar group of islands fall under the low ecological risk category. •The present study was carried out to study the potential ecological risk status of Vembar group of Islands, Gulf of Mannar•The pollution load index (PLI) reveals that the majority of the sediments are under unpolluted category.•The potential ecological risk (PERI) and sediment pollution index (SPI) reveals that the Vembar group of Islands is under low ecological risk.
ISSN:0025-326X
1879-3363
DOI:10.1016/j.marpolbul.2020.111607