Por favor, use este identificador para citar o enlazar a este item:
http://hdl.handle.net/10261/41186
COMPARTIR / EXPORTAR:
SHARE CORE BASE | |
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE | |
Título: | Response of tree seedlings to the abiotic heterogeneity generated by nurse shrubs: an experimental approach at different scales |
Autor: | Gómez Aparicio, Lorena CSIC ORCID ; Valladares Ros, Fernando CSIC ORCID ; Zamora Rodríguez, Regino; Quero Pérez, José Luis | Fecha de publicación: | dic-2005 | Editor: | Wiley-Blackwell | Citación: | Ecography 28 (6): 757-768 (2005) | Resumen: | Spatial heterogeneity of abiotic factors influences patterns of seedling establishment at different scales. In stress-prone ecosystems such as Mediterranean ones, heterogeneity generated by shrubs has been shown to facilitate the establishment of tree species. However, how this facilitation is affected by spatial scale remains poorly understood. We have experimentally analysed the consequences of the abiotic heterogeneity generated by pioneer shrubs on survival, growth and physiology of seedlings of three important tree species from Mediterranean mountains (Acer opalus ssp. granatense, Quercus pyrenaica and Quercus ilex). Patterns of abiotic heterogeneity and seedling performance were studied at two scales differing in grain: 1) the microhabitat scale, by using open interspaces as controls of the effect of different shrub species, and 2) the microsite scale, analysing the effects of fine-grain heterogeneity (within-microhabitat heterogeneity). Results showed that, at the microhabitat scale, seedling establishment of the three tree species significantly benefited from the modification of the abiotic environment by nurse shrubs. However, we found shrub-seedling interactions to be species-specific, due to differential modification of both aboveground (light availability) and belowground (soil compaction, water content, and fertility) abiotic factors by nurse shrub species. Heterogeneity at the within-microhabitat scale was rather high, although it did not significantly affect seedling performance of any of the tree species. The study demonstrates that the effects of the abiotic heterogeneity generated by shrubs are not consistent across the range of spatial scales considered. The regeneration niche of tree species becomes very complex at fine spatial scales, and thereby estimators of abiotic heterogeneity are valuable descriptors of spatial patterns of seedling establishment only when microsite ‘‘noise’’ is averaged out at greater scales. | Descripción: | 12 pages, 6 figures, 1 table, 78 references. We thank the Consejería de Medio Ambiente, Junta de Andalucía, and the Direction of the Sierra Nevada National Park, for permission for the field work, constant support and facilities. We are also especially grateful to Sergio de Haro for his help during the field work. Martin F. Quigley made valuable comments on an earlier version of the manuscript. David Nesbitt looked over the English version of the manuscript. | Versión del editor: | http://dx.doi.org/10.1111/j.2005.0906-7590.04337.x | URI: | http://hdl.handle.net/10261/41186 | DOI: | 10.1111/j.2005.0906-7590.04337.x | ISSN: | 0906-7590 |
Aparece en las colecciones: | (IRNAS) Artículos (IRN) Artículos |
Ficheros en este ítem:
Fichero | Descripción | Tamaño | Formato | |
---|---|---|---|---|
Response of tree seedlings to the abiotic.pdf | 179,74 kB | Adobe PDF | Visualizar/Abrir |
CORE Recommender
SCOPUSTM
Citations
127
checked on 01-abr-2024
WEB OF SCIENCETM
Citations
121
checked on 16-feb-2024
Page view(s)
298
checked on 05-may-2024
Download(s)
278
checked on 05-may-2024
Google ScholarTM
Check
Altmetric
Altmetric
NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.