S BIJOY NANDAN
Articles written in Journal of Earth System Science
Volume 130 All articles Published: 17 July 2021 Article ID 0138 Research article
Protective role of carbon sequestration by free living nematodes in Arctic Kongsfjord (intermediate zone), Svalbard in the emerging climate change scenario
P P KRISHNAPRIYA N K ASWATHY M M DHANYA M JIMA P R JAYACHANDRAN S BIJOY NANDAN M HARIKRISHNAN K P KRISHNAN
The proportion of blue carbon contribution by benthic fauna with regard to climate change issue is a relevant topic recent times. The present study is focusing on the carbon potential and blue carbon contribution of meiobenthic nematodes in the intermediate zone of Arctic Kongsfjord during 2015–2017 and the study is the first of its kind from this region. Foraminifera and Nematoda were the dominant fauna in 2015; whereas it was Foraminifera in 2016 and Tintinnida and Nematoda in 2017. Significant difference was noticed in the community structure of meiofauna in this three consecutive years. Twenty six nematodes were identified from the intermediate zone and their individual carbon potential and total blue carbon during the above-mentioned period is estimated.
Volume 130 All articles Published: 22 August 2021 Article ID 0174 Comments
Eliciting heavy metal contamination on selected native organisms from Cochin estuary using contemporary biomarker approach
N D DON XAVIER S BIJOY NANDAN P R JAYACHANDRAN K V NEETHU D MOHAN S R MARIGOUDAR
The accumulation trends of Cu, Zn, Pb and Ni and their effects on two native species,
$\bullet$ The tissue-specific bioaccumulation and metal selectivity index (MSI) of E. suratensis and V. cyprinoides revealed significantly higher accumulation of Cu and Zn compared to Pb and Ni throughout the study with higher rates during non-monsoonal periods.
$\bullet$ The histopathological studies in fish, E. suratensis from field conditions portrayed significant histopathological alterations such as hyperplasia, deformed secondary lamellae in gill tissues; melanomacrophage centres and necrotic lesions in liver.
$\bullet$ The estimation of human health risk assessment of heavy metals (Cu, Zn and Pb) of E. suratensis from Cochin estuary denoted a possible risk from consumption of fishes from the Cochin estuary.
Volume 132, 2023
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