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A Comparative Study of Mangrove Vegetation in Two Selected Areas of Ernakulam District, Kerala,India

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Author Affiliations

  • 1Department of Botany, St. Teresa’s College, Ernakulam, Kerala, India
  • 2Department of Botany, St. Teresa’s College, Ernakulam, Kerala, India

Int. Res. J. Environment Sci., Volume 5, Issue (8), Pages 42-48, August,22 (2016)

Abstract

Mangrove vegetation in two geographical regions of Ernakulam district was selected to study the phytosociological characteristics and diversity indices. Floristic analysis revealed that the flora consists of 7 mangrove species belonging to 5 families. In Phytosociological analysis, the highest density showed by Acanthus illicifolius (2.9 and 4.1) in Chirackal and Kattiparambu respectively. The highest IVI was recorded for A.illicifolius (8.85 and 16.07), and the lowest was recorded for Rhizophora apiculata (3.8 and 5.71) in Chirackal and Kattiparambu respectively. The other floristic elements were represented as Calophyllum inophyllum, Ipomoea purpurea, Eclipta alba, Eclipta prostrata, Alternanthera aquatica. Species abundance, density, frequency, Important Value Index (IVI), Maturity Index Values (MIV) and Similarity Index (SI) and Coefficient Difference (CD) of the mangrove species in the studied area were determined. In the present study Similarity Index, Dissimilarity Index and Coefficient Difference are reported as 70%, 30% and 30% respectively. In the present study Shannon Weiner index of diversity was ranged from 2.172 to 2.765 at two sites.

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