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Functional leaf trait diversity of 10 tree species in congolese secondary tropical forest
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نویسنده
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verbeeck h. ,betehndoh e. ,maes w.h. ,hubau w. ,kearsley e. ,buggenhout l. ,hufkens k. ,huygens d. ,van acker j. ,beeckman h. ,mweru j.p.m. ,boeckx p. ,steppe k.
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منبع
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journal of tropical forest science - 2014 - دوره : 26 - شماره : 3 - صفحه:409 -419
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چکیده
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The congo basin has a large secondary forest area. nevertheless,global plant trait databases lack substantial data from this biome and functional trait diversity is largely unknown. we analysed a unique leaf trait dataset (specific leaf area,nutrient and isotope concentrations) collected from 88 individual trees belonging to 10 different species in tropical lowland forest in the democratic republic of the congo. the trait data were found to be consistent with global datasets. δ15n was the only trait significantly influenced by plot location. for all other leaf traits,shade tolerance was a significant factor. the species factor was significant within each shade tolerance class. this shows that shade tolerance is an important but not exclusive factor determining functional diversity. tree height had significant influence on δ13c,specific leaf area and area-based nutrient concentrations. higher individual trees had thicker sun-adapted leaves,regardless of the species. a principal component analysis (pca) resulted in three significant ordination axes: leaf-thickness,n-content and p-content. by hierarchical clustering of the pca scores,four functional groups were distinguished. this showed that species with diverse strategies coexisted in the ecosystem. © forest research institute malaysia.
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کلیدواژه
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Isotopes; Nitrogen; Phosphorus; Specific leaf area; Wood density
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آدرس
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laboratory of plant ecology,department of applied ecology and environmental biology,faculty of bioscience engineering,coupure links 653, Belgium, laboratory of plant ecology,department of applied ecology and environmental biology,faculty of bioscience engineering,coupure links 653, Belgium, laboratory of plant ecology,department of applied ecology and environmental biology,faculty of bioscience engineering,coupure links 653, Belgium, laboratory of wood technology,gent university,coupure links 653,9000 ghent,belgium,laboratory for wood biology and xylarium,royal museum for central africa, Belgium, laboratory of plant ecology,department of applied ecology and environmental biology,faculty of bioscience engineering,coupure links 653,9000 ghent,belgium,isotope bioscience laboratory isofys,ghent university,coupure links 653, Belgium, laboratory of plant ecology,department of applied ecology and environmental biology,faculty of bioscience engineering,coupure links 653, Belgium, isotope bioscience laboratory isofys,ghent university,coupure links 653, Belgium, isotope bioscience laboratory isofys,ghent university,coupure links 653,9000 ghent,belgium,institute of agricultural engineering and soil science,faculty of agricultural sciences,universidad austral de chile, Chile, laboratory of wood technology,gent university,coupure links 653, Belgium, laboratory for wood biology and xylarium,royal museum for central africa, Belgium, isotope bioscience laboratory isofys,ghent university,coupure links 653, Belgium, laboratory of plant ecology,department of applied ecology and environmental biology,faculty of bioscience engineering,coupure links 653, Belgium
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Authors
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