Tree species regeneration in a mid-elevation, temperate rain forest in Isla de Chilo�, Chile
✍ Scribed by Armesto, J. J. ;Fuentes, E. R.
- Publisher
- Springer-Verlag
- Year
- 1988
- Tongue
- English
- Weight
- 677 KB
- Volume
- 74
- Category
- Article
- ISSN
- 1573-5052
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✦ Synopsis
The regeneration of canopy and subcanopy species in a mid-elevation, primary rain forest in the Coastal Range of Isla de Chilo6 (42°30'S), in the cold-temperate region of Chile, was studied by comparing seedling and sapling abundances under the forest canopy, and within 36 tree-fall gaps. The forest was dominated byAmomyrtus luma and Laureliaphilippiana (33 and 32% of the main canopy individuals), and two subcanopy species (Myrceugenia ovata, and Myrceugenia planipes) were also important. U n c o m m o n species in the canopy were Drimys winteri, Amomyrtus meli, and Raphithamnus spinosus. Tree-fall gaps were created generally by the fall of several trees, and the main canopy species were the principal gap-makers. Gap sizes varied between 28 and 972 m a, with a mean of 197 m 2. Seedling and sapling abundances indicate that the dominant species are capable of regenerating below the canopy, but they also germinate and show enhanced growth within small light gaps. For one of the c o m m o n subcanopy species (M. planipes) and the two infrequent canopy species (D. winteri, and A. melt) regeneration seems to depend entirely on tree-fall gaps. Thus, in this forest, light gaps allow the persistence of infrequent canopy species, but seem less important for the regeneration and maintenance of dominant canopy species.