Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 428381
Title Frankincense tapping reduced photosynthetic carbon gain in Boswellia papyrifera (Burseraceae) trees
Author(s) Mengistu, T.; Sterck, F.J.; Anten, N.P.R.; Bongers, F.
Source Forest Ecology and Management 278 (2012). - ISSN 0378-1127 - p. 1 - 8.
Department(s) Forest Ecology and Forest Management
Crop and Weed Ecology
Publication type Refereed Article in a scientific journal
Publication year 2012
Keyword(s) tropical dry forest - rain-forest - leaf - leaves - deciduousness - allocation - woodlands - exchange - thailand - ethiopia
Abstract Whole-crown carbon gain depends on environmental variables and functional traits, and in turn sets limits to growth sinks of trees. We estimated the annual whole-crown carbon gain of trees of the species Boswellia papyrifera, which are tapped for frankincense, by integrating leaf photosynthetic rates over the total leaf area and leaf life span. We examined the effect of tapping on total leaf area and leaf photosynthesis and, in turn, on carbon gain and resin yield for trees of a dry highland population and a wetter lowland population. Highland and lowland trees had similar total leaf area, but highland trees had higher photosynthetic rates per unit leaf area than lowland trees since they received more light and had higher photosynthetic capacities. Highland trees therefore achieved a higher annual carbon gain than lowland trees, despite a shorter rainy season and shorter leaf lifespan. Intensive tapping reduced crown leaf area and the carbon gain in the lowland trees, but not in highland trees. These results highlight how the interplay between local conditions and functional traits determine regional variation in tree productivity. However, such differences in productivity and carbon gain did not influence frankincense yield across sites. We conclude that tapping B. papyrifera trees reduces annual carbon gain but the extent differs among different populations
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