Volume No. 1 Issue No.: 1 Page No.: 26-27 July-September 2006

 

SPECIES DIVERSITY AND DOMINANCE IN TROPICAL DRY DECIDUOUS FOREST ECOSYSTEM

 

A.S. Thakur1 and P.K. Khare*2

1. Department of Botany, Govt. College, Khurai, Sagar-470117 (INDIA) 2. Department of Botany, Dr. H.S. Gour Vishwavidyalaya, Sagar-470003 (INDIA)

 

Received on : April 30, 2006

 

ABSTRACT

 

Present study deals with plant species diversity and other parameters on vegetation analysis in ten forest stands of tropical dry deciduous forests around Sagar (Madhya Pradesh) Species diversity for all three vegetational components i.e. trees, shrubs and herbs were determined after Shannon and Wiener (1963). Diversity index ranged from 2.22 to 3.66 for trees, 1.26 to 1.86 for shrubs and 2.5 to 3.04 for herbs. Beta diversity indices ranged from 0.2 to 2.35 for all the sites studied. The values of concentration of dominance were generally low in all the communities indicating that the dominance was shared by more than one and/or many species. Dominance-diversity curves were prepared and similar patterns were found in all the sites. Log-normal curves were exhibited for trees and herbs whereas geometric curves were found in case of shrubs. Vegetation still posses comparatively higher species richness and diversity. It is experienced that vegetation in a state of stress due to biotic pressure and consequently being changing into xeric nature.

 

Keywords : Species diversity, Species richness, Dominance diversity curve, Tropical deciduous forest.

 

 

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