NDLI: Sexual regeneration on a tropical inselberg in French Guiana: an inselberg specialist versus a species with a wider ecological amplitude

Content Provider	Springer Nature Link
Author	Vlasáková, Blanka
Copyright Year	2013
Abstract	This study compares sexual regeneration of two species of Clusia L. (Clusiaceae). The two woody perennials co-occur on a neotropical inselberg in French Guiana. I studied whether the two congeners, which differ in ecological amplitudes, also differ in effectiveness of sexual regeneration and survival strategies, as suggested by previous evidence from different ecosystems. Animal dispersal, secondary removal, germination, seedling mortality and juvenile distribution were examined in an inselberg specialist (Clusia blattophila) and a species with a broader ecological amplitude (Clusia nemorosa). Habitat heterogeneity was accounted for. The two species differed in parameters of individual recruitment stages such as preservation of seed germinability, seedling mortality and juvenile distribution. C. blattophila, the inselberg specialist, suffered high losses during the whole recruitment process and had low juvenile density in spite of its large cover and dominance in the shrub patches. Survival is effected by individual persistence and supported by extensive vegetative growth. C. nemorosa has inefficient primary dispersal and high seedling mortality, but exhibits higher germination rate, higher preservation of seed germinability and numerous juveniles in the community. This suggests that sexual reproduction is important for C. nemorosa, but the ability to reproduce is limited due to the ecosystem characteristics. Microhabitat heterogeneity affected most recruitment stages, but the most suitable sites were not concordant across the recruitment stages. The highest juvenile density of both species occurred in shrub patches. From the long-term perspective of both species, this results in a limited ability to colonize open microhabitats, which may limit succession towards the edaphic climax.
Starting Page	279
Ending Page	290
Page Count	12
File Format	PDF
ISSN	13850237
Journal	Plant Ecology
Volume Number	214
Issue Number	2
e-ISSN	15735052
Language	English
Publisher	Springer Netherlands
Publisher Date	2013-01-19
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Ant removal Clusia Life strategy Seed dispersal Seedling distribution Seedling mortality Plant Sciences
Content Type	Text
Resource Type	Article
Subject	Ecology Plant Science

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