Browsing by Author "Chandramohanakumar, N."
Now showing items 1-16 of 16
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Biochemical and stable carbon isotope records of mangrove derived organic matter in the sediment cores
Manju, M.N.; Resmi, P.; RatheeshKumar, C.S.; Gireeshkumar, T.R.; Chandramohanakumar, N.; Joseph, M.M. (Springer, 2016)Core sediments from five mangrove ecosystems along northern Kerala Coast were collected to evaluate the nature and sources of organic matter in these ecosystems. General sedimentary parameters (pH, Eh, grain size and total ... -
Biogeochemical characteristics of the surface sediments along the western continental shelf of India
Jacob, J.; Jayaraj, K.A.; Rehman, H.H.; Chandramohanakumar, N.; Balachandran, K.K.; Raveendran, T.V.; Joseph, T.; Nair, M.; Achuthankutty, C.T. (Taylor & Francis, 2009)Surface sediments from the western continental shelf of India were analysed for total organic carbon (TOC), total nitrogen (TN), total hydrolysable carbohydrates (TCHO) and proteins (PRT) during the late summer monsoon ... -
Biogeochemistry of the surficial sediments of the western and eastern continental shelves of India
Jacob, J.; Chandramohanakumar, N.; Jayaraj, K.A.; Raveendran, T.V.; Balachandran, K.K.; Joseph, T.; Nair, M.; Achuthankutty, C.T.; Nair, K.K.C.; George, R.; Ravi, Z.P. (Coastal Education and Reserch Foundation, 2008)Even though continental margins cover only about 7-9 % of the world ocean area, they are important sites for organic carbon accumulation and hence play a major role in biogeochemical carbon cycling. Surface sediments from ... -
Distribution and contamination status of phthalic acid esters in the sediments of a tropical monsoonal estuary, Cochin - India
Ramzi, A.; Gireeshkumar, T.R.; Rahman, H.K.; Manu, M.; Balachandran, K.K.; Chacko, J.; Chandramohanakumar, N. (Elsevier, 2018)Phthalic acid esters (PAEs) are a group of endocrine-disrupting chemicals listed as priority pollutants by United States Environmental Protection Agency (USEPA, 2009). This study provides baseline information on seasonal ... -
Distribution and sources of aliphatic hydrocarbons and fatty acids in surface sediments of a tropical estuary south west coast of India (Cochin estuary)
Gireeshkumar, T.R.; Deepulal, P.M.; Chandramohanakumar, N. (Springer, 2015)Surface sediments samples from the Cochin estuary were measured for elemental, stable isotopic and molecular biomarkers (aliphatic hydrocarbons and fatty acids) to study the sources and distribution of sedimentary organic ... -
Distribution and sources of fatty acids in surface sediments of mangrove ecosystems in the Northern Kerala Coast, India
Resmi, P.; Gireeshkumar, T.R.; RatheeshKumar, C.S.; Udayakrishnan, P.B.; Chandramohanakumar, N. (Taylor & Francis, 2023)Fatty acids and bulk geochemical proxies were employed to understand the sources and transformation of sedimentary organic matter from surface sediments of major five mangrove systems in the northern Kerala coast. Texture, ... -
Dynamics of polycyclic aromatic hydrocarbons (PAHs) in surface sediments of Cochin estuary, India
Ramzi, A.;; Rahman, K.H.; Gireeshkumar, T.R.; Balachandran, K.K.; Jacob, C.; Chandramohanakumar, N. (Elsevier, 2017)Polycyclic aromatic hydrocarbons (PAHs) showed significant seasonal dynamics in surface sediments of a tropical ecosystem (Cochin estuary, south west coast of India). Concentrations ranged from 304 to 5874 ngg<sup>-1</sup> ... -
Formation of anoxia and denitrification in the bottom waters of a tropical estuary, southwest coast of India.
Martin, G.D.; Muraleedharan, K.R.; Vijay, J.G.; Rejomon, G.; Madhu, N.V.; Shivaprasad, A.; Haridevi, C.K.; Nair, M.; Balachandran, K.K.; Revichandran, C.; Jayalakshmy, K.V.; Chandramohanakumar, N. (Copernicus Publications, 2010)Hydrographic characteristics of the southwest coast of India and its adjoining Cochin backwaters (CBW) were studied during the summer monsoon. Anomalous formation of anoxia and denitrification were observed in the bottom ... -
Nutrient biogeochemistry of the eastern Arabian Sea during the southwest monsoon retreat
George, R.; Muraleedharan, K.R.; Martin, G.D.; Sabu, P.; Gerson, V.J.; DineshKumar, P.K.; Nair, S.M.; Chandramohanakumar, N.; Nair, K.K.C. (Springer, 2013)Hydrography of the eastern Arabian Sea and associated chemical and biological responses were studied during the withdrawal phase of summer monsoon 2003. The shelf region off the southwest coast of India (10 degrees N-15 ... -
Phosphorous fractionation in mangrove sediments of Kerala, south west coast of India: the relative importance of inorganic and organic phosphorous fractions
Resmi, P.; Manju, M.N.; Gireeshkumar, T.R.; Ratheeshkumar, C.S.; Movitha, M.; Shameem, K.; Chandramohanakumar, N. (Springer, 2016)The study of phosphorous dynamics in mangrove ecosystems of the northern Kerala coast aims to delineate its relationships with other biogeochemical parameters. Our intension is to check the validity of the hypothesis that ... -
Phthalic acid esters - A grave ecological hazard in Cochin estuary, India
Ramzi, A.; Gireeshkumar, T.R.; Rahman, K.H.; Balachandran, K.K.; Shameem, K.; Chacko, J.; Chandramohanakumar, N. (2020)Distribution and ecological risks of Phthalic acid esters (PAEs) are poorly studied in estuarine environments in India. An attempt is made to chart the sources and assess the ecological risk of six PAE congeners (Σ6PAEs), ... -
Source characterisation of Sedimentary organic matter in mangrove ecosystems of northern Kerala, India: Inferences from bulk characterisation and hydrocarbon biomarkers
Resmi, P.; Manju, M.N.; Gireeshkumar, T.R.; RatheeshKumar, C.S.; Chandramohanakumar, N. (Elsevier, 2016)Surface sediment samples from five mangrove ecosystems along the Kerala coast, north of Kochi were analysed for elemental ratios, stable isotopes of carbon and hydrocarbon biomarkers (n-alkanes, n-alkenes and hopanes) to ... -
Statistical significance of biomonitoring of marine algae for trace metal levels in a coral environment
Gopinath, A.; Muraleedharan, N.S.; Chandramohanakumar, N.; Jayalakshmy, K.V. (Taylor & Francis, 2011)Samples of macro algae collected at random distances from the coral and near shore environment of Lakshadweep archipelago were analyzed for their trace metal content (Fe, Mn, Zn, Cu, Co, Cr, Cd, Pb, and Ni). All the species ... -
Toxic metals enrichment in the surficial sediments of a eutrophic tropical estuary (Cochin Backwaters, Southwest coast of India)
Martin, G.D.; Rejomon G.; Shaiju, P.; Muraleedharan, K.R.; Nair, S.M.; Chandramohanakumar, N. (The Scientific World Journal, 2012)Concentrations and distributions of trace metals (Cd, Co, Cr, Cu, Fe, Mn, Ni, Pb, and Zn) in surficial sediments of the Cochin backwaters were studied during both monsoon and pre-monsoon periods. Spatial variations were ... -
Trace metal distribution in the sediment cores of mangrove ecosystems along northern Kerala coast, south-west coast of India
Manju, M.N.; RatheeshKumar, C.S.; Resmi, P.; Gireeshkumar, T.R.; Manju M.J.; Salas, P.M.; Chandramohanakumar, N. (Elsevier Ltd, 2020)Core sediment samples were collected from five mangrove ecosystems along northern Kerala coast (Kunjimangalam: S1, Pazhayangadi: S2, Pappinissery: S3, Thalassery: S4, and Kadalundi: S5) to assess the status of heavy metal ... -
Triterpenoids and fatty alcohols as indicators of mangrove derived organic matter in Northern Kerala Coast, India
Resmi, P.; Gireeshkumar, T.R.; RatheeshKumar, C.S.; Udayakrishnan, P.B.; Chandramohanakumar, N.; Joseph, M.M. (Taylor & Francis, 2022)Triterpenoids and fatty alcohols were identified from the sediments of five mangrove ecosystems (Kunjimangalam, Pazhayangadi, Pappinissery, Thalassery, and Kadalundi) in the northern Kerala coast, India, to illustrate the ...