9th International Science Congress (ISC-2019).  International E-publication: Publish Projects, Dissertation, Theses, Books, Souvenir, Conference Proceeding with ISBN.  International E-Bulletin: Information/News regarding: Academics and Research

Distribution of Benthic Foraminifera off Cuddalore, Bay of Bengal, Southeast Coast of India

Author Affiliations

  • 1 Dept. of Earth Sciences, Pondicherry University, Puducherry, INDIA

Int. Res. J. Environment Sci., Volume 3, Issue (9), Pages 5-13, September,22 (2014)


Benthic foraminifera from both surface and core sediments collected along two transects in the offshore region of Cuddalore were studied in parallel to environmental variables and sediment characteristics. Altogether 95 species belonging to 47 genera and 6 orders were identified. Analysis revealed that species richness is high in the inner shelf while abundance increases seaward. Amphistegina, Quinqueloculina, Operculina and Elphidium are dominant in areas of coarser sediments and strong current activity. The outer shelf assemblage is characterised by muddy sediments rich in Uvigerina, Bulimina and Bolivina. Living specimens were rare though few numbers were found in the near shore region. The temperature, pH, dissolved oxygen and dissolved nitrogen content of the sample locations exhibited minimal changes except salinity. Strong currents, slight variations in the physicochemical parameters, mixing of cytoplasm during the development stages of tests would have resulted in test abnormalities. Four kinds of textures were identified: Sand, slightly sandy mud, slightly muddy sand, muddy sand. Statistical analysis showed that taxonomic richness never exceeded 13 per sample and they are more or less evenly distributed in all the stations.


  1. Murray J.W., Ecology and Applications of Benthic Foraminifera, Cambridge University Press, Cambridge 426 (2006)
  2. Armynot du Châtelet E.A., Debenay J.P. and Soulard R., Foraminiferal proxies for pollution monitoring in moderately polluted harbors, Environ. Pollut., 127, 27–40 (2004)
  3. Alve E., Benthic foraminiferal responses to estuarine pollution: A review, J. Foram. Res., 25(3), 190-203 (1995)
  4. Geslin E., Debenay J.P., Duleba W. and Bonetti C., Morphological abnormalities of foraminiferal tests in Brazilian environments: comparison between polluted and non-polluted areas, Mar. Micropaleontol., 45, 151–168 (2002)
  5. Meriç E., Görmüş M., Avşar N., Yokeş B.M. and Dinçer F., Twin, triplet and quadruplet teratogens in benthic foraminifera from Antalya, Micropaleontology, 54(3-4), 293-306 (2008)
  6. Ramasamy V., Suresh G., Meenakshisundaram V. and Ponnusamy V., Horizontal and vertical characterization of radionuclides and minerals in river sediments, Appl. Radiat. Isotopes, 69, 184 – 195 (2011)
  7. Prasanna M.V., Chidambaram S., Shahul Hameed A. and Srinivasamoorthy K., Hydrogeochemical analysis and evaluation of groundwater quality in the Gadilam river basin, Tamil Nadu, India, J. Earth Syst. Sci., 120(1), 85–98 (2011)
  8. Hemapriya R., Sankar K. and Imran A.D., Geologic and geomorphologic investigation of Gadilam River Basin (India). J. Environ. Res. Dev., 4(3), 750- 757 (2010)
  9. Murthy K.S.R., Subrahmanyam A.S., Murty G.P.S., Sarma K.V.L.N.S., Subrahmanyam V., Mohana Rao K. Suneetha Rani P., Anuradha A., Adilakshmi B. and Sri Devi T., Factors guiding tsunami surge at the Nagapattinam–Cuddalore shelf, Tamil Nadu, east coast of India, Curr. Sci. India., 90(11), 1535- 1538 (2006)
  10. Varadachari V.V.R., Nair R.R. and Murthy P.S.N., Submarine canyons off the Coromandel Coast, Bull. Natl. Inst. Sci. India., 38, 457–462 (1968)
  11. Lutze G.F., Altenbach A., Technik und Signifikanz der Lebendfarbung benthischer Foraminiferen mit Bengalrot, Geologisches Jahrbuch A, 128, 251–265 (1991)
  12. Schönfeld J., Alve E., Geslin E., Jorissen F., Korsun S., Spezzaferri S. and Members of the FOBIMO group, The FOBIMO (FOraminiferal BIo-MOnitoring) initiative - Towards a standardised protocol for soft-bottom benthic foraminiferal monitoring studies, Mar. Micropaleontol., 94-95, 1-13 (2012)
  13. Walton W.R., Techniques for recognition of living foraminifera: Contrib. Cushman Found. Foramin. Res., 3, 56-60 (1952)
  14. Folk R.L., The distinction between grain size and mineral composition in sedimentary-rock nomenclature, J. Geol., 62, 344-359 (1954)
  15. Reineck H.E. and Siefert W., Faktoren der Schlickbildung im Sahlenburger Watt und Neuwerker Watt, Die KuK ste, 35, 26-51 (1980)
  16. Pejrup M., The triangular diagram used for classification of estuarine sediments: a new approach. In: de Boer, P.L., van Gelder, A., Nio, S.D. (Eds.), Tide-Influenced Sedimentary Environments and Facies, Reidel, Dordrecht, 289-300 (1988)
  17. Fleming B.W., A revised textural classification of gravelfree muddy sediments on the basis of ternary diagrams, Cont. Shelf Res., 20, 1125-1137 (2000)
  18. Hammer Ø., Harper D.A.T., Ryan P.D. PAST: Paleontological Statistics Software Package for Education and Data Analysis. PE., 4 (1), 1-9 (2001)
  19. Shannon C.E., A mathematical theory of communication, Bell Syst. Tech. J., 27, 379–423 (1948)
  20. Hayek L.C. and Buzas M.A., Surveying Natural Populations: Columbia University Press, New York, 563 (1997)
  21. Fisher R.A., Corbet A.S. and Williams C.B., The relationship between the number of species and the number of individuals in a random sample of an animal population, J. Anim. Ecol., 12, 42–58 (1943)
  22. Murray J.W., Distribution and ecology of living benthic foraminiferids, Heinemann Educational Books, London 274 (1973)
  23. Viveganandan S., Lakshumanan C., Sundararajan M., Eswaramoorthi S., Natesan U., Depositional environment of sediments along the Cuddalore coast of Tamilnadu, India, Indian J.Geomarine. Sci., 42(3), 375- 382 (2013)
  24. Chauhan O.S., Sedimentological parameters of beach sediments on the east coast of India, J. Coastal. Res., 6, 573-585 (1990)
  25. Murray J.W., Ecology and applications of benthic foraminifera. Cambridge University Press, Cambridge, 319 (1963)
  26. Le Calvez J., Ordre des Foraminiferes, In: Grasse, P.P., Ed., Traité de Zoologie, Anatomie, Systématique, Biologie, Paris: Masson, 1 (2), 149-265 (1953)