Applied Ecology and Environmental Sciences
ISSN (Print): 2328-3912 ISSN (Online): 2328-3920 Website: http://www.sciepub.com/journal/aees Editor-in-chief: Alejandro González Medina
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Applied Ecology and Environmental Sciences. 2019, 7(6), 255-262
DOI: 10.12691/aees-7-6-7
Open AccessArticle

Substrate Characteristics and Benthic Foraminiferal Distribution from the Gulf of Mannar, Off Tiruchendur, Southeast Coast of Tamilnadu, India

V. Kumar1, R. Vijayan1, , T. Gangaimani2 and S. Jeevanandam3

1Department of Geology National College, Bharathidasan University, Trichy-01

2Department of Civil MAM College, Engneering and Technology, Trichy-105

3Department of Geology Kajamalai Campus, Bharathidasan University, Trichy-23

Pub. Date: December 09, 2019

Cite this paper:
V. Kumar, R. Vijayan, T. Gangaimani and S. Jeevanandam. Substrate Characteristics and Benthic Foraminiferal Distribution from the Gulf of Mannar, Off Tiruchendur, Southeast Coast of Tamilnadu, India. Applied Ecology and Environmental Sciences. 2019; 7(6):255-262. doi: 10.12691/aees-7-6-7

Abstract

To document the relationship between the substrate characteristics and benthic foraminiferal occurrence in the inner shelf of Gulf of Mannar, off Tiruchendur, sediment samples were collected and studied from 27 stations along three traverses, having depths ranging from 1.5 to 18.5 metres. Surface sediments were collected during May and October in the year 2016 representing summer and pre monsoon respectively and thus the total samples amounted to 54. The traverses are made between south off Veerapandianpatinam and off Alanthalai. During the study 105 foraminiferal species belonging to 40 genera, 29 families, 15 super families and 4 sub orders have been recorded. Among them, 5 have been identified as widespread and abundantly occurring living species since they are found in all the samples collected and studied. The distribution and diversity of foraminiferal fauna are correlated with the substrate characteristics. Their living and total population (living + dead) is relatively higher in the summer (May) than in pre monsoon (October). It has been observed that the living foraminiferal population shows an increase with respect to depth. Siltysand substrate, higher concentration of CaCo3 (< 25%) and moderate organic matter (1.0 – 2.3%) in the substrate are the congenial ecological condition favouring abundance of the living foraminiferal population in the inner shelf off Tiruchendur coast.

Keywords:
substrate characteristics ecology recent benthic foraminifera gulf off Tiruchendur

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