English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/38147
Share/Impact:
Statistics
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:
Title

Spatial patterns of species distributions in grazed subalpine grasslands

AuthorsKomac, Benjamin ; Alados, Concepción L. ; Bueno, C. Guillermo ; Gómez García, Daniel
KeywordsBeta diversity
Detrended fluctuation analysis
Grazing stocking rates
Information fractal dimension
Self-organization
Spatial patterns
Issue DateMar-2011
PublisherSpringer
CitationPlant Ecology 212(3): 519-529 (2011)
AbstractSpatial patterns of species diversity have important influences on the functioning of ecosystems, and the effect of livestock grazing on spatial heterogeneity can differ depending on the scale of the analysis. This study examined the effects of grazing on the spatial patterns of species distributions and whether the effects of grazing on the spatial distributions of a species vary with the scale of the analysis. Data were collected at three locations in the subalpine grasslands of Ordesa-Monte Perdido National Park and Aísa Valley, Central Pyrenees, Spain, which differed in mean stocking rates. Aspect explained about one-third of the environmental variation in species distributions. In flat areas, spatial variation in species composition varied with grazing intensity at two scales. At a coarse scale (among vegetation patches), grazing promoted patchiness, and among-transect variation in species diversity and grazing intensity were positively correlated. At a fine scale (within vegetation patches), the disruption of the self-organizing processes of the species spatial distributions resulted in a reduction in the long-range spatial autocorrelations of some of the characteristic species and in the homogenization of species spatial distributions. The presence of encroaching Echinospartum horridum had a significant influence on the effect of grazing on south-facing grassland slopes.
Description11 páginas, 3 tablas, 1 apéndice.-- El PDF del artículo es la versión manuscrita de autor.
Publisher version (URL)http://dx.doi.org/10.1007/s11258-010-9842-6
URIhttp://hdl.handle.net/10261/38147
DOI10.1007/s11258-010-9842-6
ISSN1385-0237
Appears in Collections:(IPE) Artículos
Files in This Item:
File Description SizeFormat 
Komac_manuscritV3.pdf152,49 kBAdobe PDFThumbnail
View/Open
Show full item record
 

Related articles:


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.