SPECIES RICHNESS ESTIMATION OF GROUNDOVER VEGETATION IN SOME PARTS OF 2010 PYROCLASTIC FLOWS AREAS OF MT. MERAPI USING EstimateS

Limited attention has been paid to the recovery of groundcover vegetation after eruption of a volcano. Species richness of groundcover plant communities in Kalikuning area of Mount Merapi was investigated one year after 2010 eruption. Species richness was described with species-accumulation curves. Different species richness estimators were calculated using EstimateS and used to extrapolate species richness beyond the data collected. Species-accumulation curve reached saturation as the number of sample increased. Observed species richness was 72 species in Kalikuning area. Based on estimators, species richness was higher than observed, estimated between 81 to 104 species. The Bootstrap richness estimator was considered most appropriate to predict the number of species at the study site if sampling were continued. 

Presentasi di ICSAE Sebelas Maret University, June 2013