Structure and dynamics of bamboos in the Wolong Natural Researve, China
1993
Taylor, A.H. | Zisheng, Q.
Culm (ramet) demography of two bamboos, Fargesia robusta and Bashania fangiana, was studied over 7 yr in southwest China to determine if: 1) ramet numbers remain relatively constant, 2) ramet mortality was constant, 3) density response was greater in spreading vs. compact clones; 4) extrinsic factors (e.g., predation, climate) influenced ramet dynamics; and 5) ramets that die are smaller than ones that live. Culm numbers remained relatively constant (+/- 20%) in most plots, but culm numbers increased (> 20%) on some sites. Mortality of culms > 6 mo old over 7 yr was low and constant, but mortality of younger culms (less than or equal to 6 mo) was high and variable due to predation. Spreading clones had greater recruitment response to density than compact clones, but predation and climate may have diminished or amplified the observed demographic patterns. Predators and perhaps climate influenced culm demography, and culms that died were smaller than remaining live culms. The demography of the two bamboos we studied is compared to other clonal plants, including bamboos, to identify common processes controlling ramet demography.
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