NDLI: Light acclimation of four native tree species in felling gaps within a tropical mountain rainforest

Content Provider	Springer Nature Link
Author	Kuptz, Daniel Grams, Thorsten E. E. Günter, Sven
Copyright Year	2009
Abstract	Ecuadorian mountain rainforests are declining dramatically due to deforestation. Exploitation of remaining forests has led to low abundances of native, valuable timber species. Enrichment planting of selected native tree species into forest gaps is a strategy that may increase their abundance and maintain biodiversity. However, the development of successful planting strategies requires knowledge of environmental demands on, and ecological requirements of, native species during their establishment. This knowledge is currently lacking for mid- and late-successional species in Central American forests. Two deciduous, mid-successional (Cedrela montana, Tabebuia chrysantha) and two evergreen, late-successional native tree species (Nectandra membranacea, Podocarpus sprucei) were planted into felling gaps. Photosynthetic performance and growth in height of these species were assessed along light gradients during seedling establishment to test whether species-specific light responses were related to plant successional traits. Both mid-successional species benefited from higher light levels in gaps up to 30% canopy openness60°. In larger gaps, C. montana exhibited a significant decline in growth. As expected, growth of the late-successional species was only marginally increased at higher light levels. Nevertheless, the photosynthetic apparatus of N. membranacea displayed rapid acclimation to higher light conditions in gaps. Plant response to felling gaps may not always be predicted based on successional status. Our results suggest that the four investigated species may coexist in the same gap by occupying different niches along light gradients. This arrangement may offer an ecological basis to increase the abundance of valuable timber species through enrichment planting in Ecuador mountain rainforests.
Starting Page	117
Ending Page	127
Page Count	11
File Format	PDF
ISSN	09311890
Journal	Trees
Volume Number	24
Issue Number	1
e-ISSN	14322285
Language	English
Publisher	Springer-Verlag
Publisher Date	2009-10-14
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Light assessment Height growth Natural forest management Photosynthesis South Ecuador Successional plant traits Plant Physiology Plant Pathology Plant Anatomy/Development Agriculture Plant Sciences Forestry
Content Type	Text
Resource Type	Article
Subject	Ecology Physiology Plant Science Forestry

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