TY  - JOUR
AU  - Baraloto, C.
AU  - Forget, P.M.
PY  - 2007//
TI  - Seed size, seedling morphology, and response to deep shade and damage in neotropical rain forest trees
T2  - Am. J. Bot.
JO  - American Journal of Botany
SP  - 901
EP  - 911
VL  - 94
IS  - 6
PB  - BOTANICAL SOC AMER INC
KW  - cotyledons
KW  - French Guiana
KW  - functional morphology
KW  - herbivory
KW  - life history
KW  - phylogeny
KW  - regeneration strategy
KW  - shade tolerance
N2  - To investigate the existence of coordinated sets of seedling traits adapted to contrasting establishment conditions, we examined evolutionary convergence in seedling traits for 299 French Guianan woody plant species and the stress response in a shadehouse of species representing seed size gradients within five major cotyledon morphology types. The French Guianan woody plant community has larger seeds than other tropical forest communities and the largest proportion of hypogeal cotyledon type (59.2%) reported for tropical forests. Yet the community includes many species with intermediate size seeds that produce seedlings with different cotyledonal morphologies. A split-plot factorial design with two light levels (0.8% and 16.1% PAR) and four damage treatments (control, seed damage, leaf damage, stem damage) was used in the shadehouse experiment. Although larger-seeded species had higher survival and slower growth, these patterns were better explained by cotyledon type than by seed mass. Even larger-seeded species with foliar cotyledons grew faster than species with reserve-type cotyledons, and survival after stem grazing was five times higher in seedlings with hypogeal cotyledons than with epigeal cotyledons. Thus, to predict seedling performance using seed size, seedling morphology must also be considered.
SN  - 0002-9122
N1  - ISI:000249830600001
ID  - Baraloto+Forget2007
ER  -