Condit et al.: Growth and Mortality of tropical tree species in Mudumalai, India
Growth and mortality rates were calculated for all tree species in the 50 hectare plot established in a dry deciduous forest in the Mudumalai Wildlife Sanctuary in the Nilgiris District of the Western Ghats in southern India. The plot was established in 1988 by the Centre for Ecological Sciences of the Indian Institute of Science in Bangalore. There is a strong 5- to 6-month dry season from November through April. All trees greater than or equal to 1 cm diameter at breast height were measured and tagged during 4 full censuses in 1988-1989, 1992, 1996, and 2000. Relative growth rates were calculated for each individual tree using log transformed diameters, annualized by the time interval between census measurements, then averaged within species. Outliers were excluded: stems that grew greater than 75 mm per year or shrunk more than 25% of their initial dbh. The mortality rate constants were calculated using the number of trees alive in the first census, number of survivors in the second census, averaged over the time interval.