| 要旨トップ | 目次 | 日本生態学会第67回全国大会 (2020年3月、名古屋) 講演要旨
ESJ67 Abstract


一般講演(口頭発表) J02-10  (Oral presentation)

Predicting seedling performance for restoration of Acacia koa based on intraspecific variation in functional traits

*Anna SUGIYAMA(University of Hawaii at Manoa, Purdue University), James B. FRIDAY(University of Hawaii at Manoa), Christian P. GIARDINA(US Forest Service), Douglass F. JACOBS(Purdue University)

Life history theory predicts that species face various allocation tradeoffs in demographic processes. In plants, the leaf economics spectrum and the wood economics spectrum have shown global trends in how species allocate resources, where each species falls somewhere in the continuum of acquisitive high performer and conservative defender. Such tradeoffs in functional traits and performance are potentially useful in predicting restoration success under various field conditions, but their applicability within a species is poorly explored. Yet, for species that occur along a wide environmental gradient, intraspecific tradeoffs in functional traits reflecting plant performance may be expected due to local adaptation. In restoration, use of local sources has been recommended but genetic offset is shown due to climate change, and sources that will tolerate projected climates at restoration sites may need to be proactively sought. Using Acacia koa (koa), a Hawaiian endemic tree species that occurs along environmental gradients, we tested intraspecific tradeoffs in life history strategies, reflected in functional traits, and their applicability in restoration. With a combination of fieldwork, greenhouse, growth chamber, and lab experiments, we will show some strong intraspecific tradeoffs, and how understanding local adaptation and phenotypic plasticity in different environmental conditions may be useful in restoration.


日本生態学会