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Open Access item The combined role of topography and overstory tree composition in promoting edaphic and floristic variation in a Mediterranean forest.
García, Luis V.
|Keywords:||Fertility gradient, Ecosystem engineer, Quercus faginea, Quercus suber, Soil Zn|
|Publisher:||The Ecological Society of Japan|
|Citation:||Ecological Research 20: 668-677 (2005)|
|Abstract:||This study aimed to address which factors,
other than topography, contribute to the floristic variation
of forested slopes. The natural forest studied is
located in the Sudoeste Alentejano e Costa Vicentina
Nature Park (southwestern Portugal). We sampled
topographic, edaphic, floristic and community structure
variables along three bottom–top hillside transects.
Multivariate analyses of soil variables (by PCA), and of
woody species composition and floristic–environmental
relationships (by CCA and pCCA) were performed.
Environmental–floristic trends strongly associated with
the elevation gradient were identified. At lower altitudes,
the lowest species richness, the highest soil fertility, and
the tallest and most dense (least available light) canopy
occurred. The spatial variation in woody species composition
and abundance was closely associated with Zn
availability in the soil and litter groundcover, but these
varibles had significant spatial structure in the studied
|Description:||10 pages, 7 tables, 1 figure, 47 references. Special thanks go to Ana Mouro, Joao Luís Mouro, Miguel Porto, Nuno Pires and Sara Dias for assisting in the fieldwork, and Nuno Gomes and associated workers for the EDM loan and field aid. http://www.irnase.csic.es/users/lventura/ER_20_668.pdf|
|Appears in Collections:||(IRNAS) Artículos|
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