The rattan shown above is Calamus solitarius T.Evans, K. Sengdala, O. Viengkam, B. Thammvong & J. Dransf., an important commercial cane in Laos and Cambodia. I leave this weekend for Laos and Cambodia to give several training workshops on the sustainable management of C. solitarius in community forests. [NOTE: In spite of its commerical importance, this rattan was unnamed until 2000 (see Field Herbarium). Go here for original species description].
Image below shows a size-specific growth curve for C. solitarius based on 4 years of data collected from wild populations near Ban Sobphuan in Laos (see Thin Red Line and Lunch at Ban Sobphuan). The coefficient of determination could be better, but given the total lack of reliable growth data from wild rattan, the basic importance of these data for defining a sustainable harvest level, and the fact that these data were collected by local staff in Laos, this is a priceless scatterplot (and regression equation). [NOTE: Data are, as yet, unpublished, so please don't touch. Thx].
