Changes in Liana diversity over a decade in Indian tropical dry evergreen forests
Khadanga S.S; Muthumperumal C; Parthasarathy N
Biodiversity in Tropical Ecosystems
Lianas or woody climbers contribute considerably to biodiversity leaf\r\nproduction and biomass of tropical forests. Lianas persist in mature\r\ntropical forests with little structural disturbance and their abundances\r\nhave increased in recent years possibly due to increase in atmospheric\r\nCO2. Further with increase in global temperatures due to climate \r\nchange it has been anticipated that the growth rates of lianas may\r\nincrease further. The present study was conducted to investigate the\r\nchanges in liana species richness and abundance in two Indian tropical\r\ndry evergreen forest sites. Two 1-hectare permanent plots one each at\r\nOorani (OR) and Puthupet (PP) established a decade ago were reinventoried\r\nfor liana diversity in December 2011. All rooted lianas > 1cm diameter were measured at 1.3m from the rooting point. A total of 2199 liana individuals representing 32 species 27 genera and 22 families were inventoried in the present study. Over a decade (2001– 2011) liana species richness decreased as a whole but there was an overall increase in liana abundance and basal area in both the sites. The increase was greater in small diameter lianas. Evidently with\r\nincreasing human disturbance there is an increase in liana abundance\r\nwhich is in agreement with results of other studies.