Indian Journal of Geo-Marine Sciences

Jump to: navigation, search

Published by: NISCAIR (CSIR)

Subjects: Earth Science Geo-Marine Science

This journal was started in 1972 and this multi-disciplinary journal publishes full papers and short communications in the following areas: marine biology, marine chemistry, marine geology, physical oceanography, ocean engineering, marine instrumentation, marine corrosion and material science, satellite oceanography & modeling, marine engineering, marine pollution, marine archaeology, coastal zone management.

Contact

Editor, IJGMS, National Institute of Science Communication And Information Resources, CSIR, K S Krishnan Marg, Pusa Campus, New Delhi 110 012, India Phone:25846301,03-07 (Extn-248); Fax:(91)(11) 25847062 E-mail: sundaresanj@hotmail.com


ISSN No. :    0379-5136
Recent articles
Subscribe to Recent articles by email

Enter your email address:

Anthropogenic effects on sediment quality of Muthupet mangroves: assessing the sediment core geochemical record.
Title: Anthropogenic effects on sediment quality of Muthupet mangroves: assessing the sediment core geochemical record.

Authors: Natesan, Usha; Kumar, Madan M; Deepthi, K

Abstract: Four cores were collected from Muthupet mangroves, southeast coast of India to evaluate the heavy metal contamination (Ni, Pb, Mn, Zn, V, Sr and Sc) and the associated geochemical parameters viz., texture, CaCO3 and organic carbon. Textural analysis reveals a predominance of mud. A distinct event is identified at 57.5-60 cm suggesting a change in deposition trend due to the tsunami on 26th June 1941. The higher values in the lower portion in all the core samples indicate that metals are reprecipitated at deeper levels. According to Geoaccumalation index Muthupet mangroves can be considered to be uncontaminated to moderately contaminated with respect to trace metals. Sediment Enrichment Factor computation indicate that all metals except Ni and Mn in C4 (crustal origin) are of anthropogenic origin. From estimation of toxic unit, it is evident that the sequence for toxicity is C3 > C4 > C2 > C1.

Page(s): 1051-1060

Sedimentary geochemistry of Chorao Island, Mandovi mangrove estuarine complex, Goa
Title: Sedimentary geochemistry of Chorao Island, Mandovi mangrove estuarine complex, Goa

Authors: Sappal, Swati M.; Ramanathan, AL.; Ranjan, Rajesh K.; Singh, Gurmeet

Abstract: Present study highlighted significant anthropogenic contributions in terms of heavy metal pollution in Mandovi estuarine complex. Sediment core was collected which was analyzed for different physico-chemical parameters. Sediments were found to be mature, quartz rich and weathering does not seem to play any role. Biological activities were significant due to abundance of S and OC in the sediments which along with the redox conditions controlled the metal variability. Sediments were found to be enriched with respect to heavy metals like Pb and Mn indicating anthropogenic influence in this region.

Page(s): 1091-1100

Reading source and processes with time from mangrove sedimentary environment of Vaitarna estuary, west coast of India
Title: Reading source and processes with time from mangrove sedimentary environment of Vaitarna estuary, west coast of India

Authors: Volvoikar, Samida P.; Nayak, G. N.

Abstract: Two mangrove sediment cores collected from Vaitarna estuary were studied for the distribution of sediment components (sand, silt, clay and organic carbon), major elements (iron, manganese and aluminium) and trace metals (copper, zinc, cobalt, nickel and lead). Both the cores showed a gradual decrease in sand and an increase in clay component from bottom to surface. This change in the type of sediment deposited was attributed to the change in hydrodynamic energy conditions resulting from both natural (decrease in rainfall) as well as anthropogenic activities (construction of dams, freshwater diversion, etc.). Metals were found to be strongly associated with sand, silt and clay, while Fe-Mn oxyhydroxides and organic matter were found to play a minor role. They also showed similarity in their distribution patterns, thus suggesting a common lithogenic source. Enrichment of iron and zinc in core S5 and manganese, copper, cobalt and lead in core S6 towards surface however suggested increase in anthropogenic additions in recent years.

Page(s): 1069-1081

Environmental significance of heavy metals in leaves and stems of Kerala mangroves, SW coast of India
Title: Environmental significance of heavy metals in leaves and stems of Kerala mangroves, SW coast of India

Authors: Badarudeen, A.; Sajan, K.; Srinivas, Reji; Maya, K.; Padmalal, D.

Abstract: Out of the seven heavy metals (Fe, Mn, Co, Pb, Cd, Cu and Zn) studied in the leaves and stems of mangroves and mangrove associates of Veli (9 species), Kochi (5 species) and Kannur (9 species) regions, Cerbera odollam, a typical mangrove associate that spread in Veli, accounts for the highest contents of Mn and Cd. Other plant species do not show any specific heavy metal enrichment pattern in the coastal segments chosen for the present study. A comparative evaluation of heavy metal contents in the vegetal parts (leaves and stems) with that of the sediment substratum reveals that, almost all metals are concentrated in the former than latter.

Page(s): 1027-1035

Back to Journals






About Us | Advertise on Indian Science | Contact Us
Copyright © 2007-2011 IndianScience.in