LIANA GROWTH, MORTALITY AND RECRUITMENT IN FOUR INLAND TROPICAL DRY EVERGREEN FOREST SITES OF PENINSULAR INDIA

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Published: 2017-04-22

Page: 60-72


E. PANDIAN *

Department of Ecology and Environmental Sciences, Pondicherry University, Puducherry, India.

N. PARTHASARATHY

Department of Ecology and Environmental Sciences, Pondicherry University, Puducherry, India.

M. ANBARASHAN

Department of Ecology and Environmental Sciences, Pondicherry University, Puducherry, India.

*Author to whom correspondence should be addressed.


Abstract

Liana diversity re- inventoried after decade for assessing their growth, mortality and recruitment rates in four inland tropical dry evergreen forest sites, on the Coromandel Coast of south India, were investigated between 2003-2013. Four 1-ha permanent plots (100 m x 100 m) were established in four tropical dry evergreen forest sites - Araiyapatti (AP), Karisakkadu (KR), Maramadakki (MM) and Shanmuganathapuram (SP). All lianas ≥1 cm diameter at breast height (dbh) were measured at 1.3 m from the ground level. The initial inventory in 2003 yielded 35 species, whereas in 2013 a total of 37 species were recorded. Among the four studied sites, liana species richness increased by 4.6% (1 species) and 11.2% (3 species) in sites MM and SP respectively, but in sites AP and KR no change in total number of species in ten-year interval. Liana density increased in all the study sites in ten-year interval by 210, 211, 164 and 162 stems in sites AP, KR, MM and SP respectively. The mean growth rate of lianas (≥ 1 cm dbh) in four tropical dry evergreen forest sites ranged from 0.37 cm yr-1 in site KR to 0.58 cm yr-1 in site SP. The mortality rate was 3.2 and 7.1% yr-1 in highly disturbed sites SP and AP respectively, while the moderately disturbed sites showed 7.5% yr-1in site KR and 1.6% yr-1 in site MM. High recruitment rate was recorded in less disturbed sites KR (36.6% yr-1) and MM (24.4% yr-1). This result revealed forest degradation, so strengthening of conservation activities with involvement of local community.

Keywords: Forest dynamics, liana growth, mortality, recruitment, tropical dry evergreen forest


How to Cite

PANDIAN, E., PARTHASARATHY, N., & ANBARASHAN, M. (2017). LIANA GROWTH, MORTALITY AND RECRUITMENT IN FOUR INLAND TROPICAL DRY EVERGREEN FOREST SITES OF PENINSULAR INDIA. Journal of Global Ecology and Environment, 6(2), 60–72. Retrieved from https://ikprress.org/index.php/JOGEE/article/view/1002

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