Facilitation of Quercus ilex in Mediterranean shrubland is explained by both direct and indirect interactions mediated by herbs
1. Competitive and facilitative interactions shape plant communities. Whereas a number of studies have addressed competition and direct facilitation among plants in dry ecosystems, indirect facilitation has received little attention. 2. We investigated the relative importance of direct and indirect...
| Autores: | , , , , |
|---|---|
| Formato: | artículo |
| Fecha de publicación: | 2010 |
| País: | España |
| Recursos: | Universidad de Alcalá (UAH) |
| Repositorio: | e_Buah Biblioteca Digital Universidad de Alcalá |
| Idioma: | inglés |
| OAI Identifier: | oai:ebuah.uah.es:10017/21314 |
| Acesso em linha: | http://hdl.handle.net/10017/21314 https://dx.doi.org/10.1111/j.1365-2745.2010.01655.x |
| Access Level: | acceso abierto |
| Palavra-chave: | Chlorophyll fluorescence Herb competition Quercus ilex Retama sphaerocarpa Seedling size Water potential Ciencia Medio Ambiente Science Environmental science |
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Facilitation of Quercus ilex in Mediterranean shrubland is explained by both direct and indirect interactions mediated by herbsCuesta Poveda, BárbaraVillar Salvador, Pedro|||0000-0001-9338-4530Rey Benayas, José María|||0000-0002-2099-8512Puértolas Simón, JaimeMichalet, RichardChlorophyll fluorescenceHerb competitionQuercus ilexRetama sphaerocarpaSeedling sizeWater potentialCienciaMedio AmbienteScienceEnvironmental science1. Competitive and facilitative interactions shape plant communities. Whereas a number of studies have addressed competition and direct facilitation among plants in dry ecosystems, indirect facilitation has received little attention. 2. We investigated the relative importance of direct and indirect facilitation by the nurse plant Retama sphaerocarpa on late-successional Quercus ilex seedlings mediated by herb suppression in a Mediterranean shrubland in 2006 and 2007. We also studied whether facilitation outcome depended on the size of the facilitated seedlings. 3. A field experiment was carried out to test the effect of (i) position of Q. ilex seedling with respect to shrub canopy (under shrubs or in gaps), (ii) herb competition (presence or absence), and (iii) seedling size. 2006 was an average rainfall year while 2007 had a much more humid spring and a dryer summer than 2006. 4. In both years, nurse shrubs reduced seedling mortality whereas herbs increased it. In the average rainfall year, seedling mortality under shrubs was unaffected by herbs whereas in gaps it was signifi- cantly higher in presence of herbs. This showed that the nurse shrub indirectly facilitated the seedlings by reducing the competitive capacity of herbs. Conversely, facilitation was predominately direct during the humid spring and dry summer year since herbs hindered seedling survival similarly under the nurse shrub and in gaps. The nurse shrub directly facilitated the seedlings by reducing seedling photoinhibition and water stress. 5. Improvement of environmental conditions by Retama benefited smaller seedlings but not larger seedlings since the nurse shrub reduced mortality of smaller seedlings relative to that in gaps, but this effect was not observed for larger seedlings. This indicates that individuals within a seedling population may not have the same response to facilitation. 6. Synthesis. Both indirect and direct facilitation are important mechanisms for Q. ilex regeneration in Retama shrubland and their importance seems to vary with climatic conditions. Indirect facilitation by release of herb competition under nurse shrubs is important in years of dry springs when competition between nurse shrubs and herbs is high, whereas direct facilitation mediated by microclimate amelioration increases with summer aridityMinisterio de Educación y CienciaMinisterio de Ciencia y TecnologíaComunidad de MadridJohn Wiley & Sons20102010-01-01journal articlehttp://purl.org/coar/resource_type/c_6501NAhttp://purl.org/coar/version/c_be7fb7dd8ff6fe43info:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10017/21314https://dx.doi.org/10.1111/j.1365-2745.2010.01655.xreponame:e_Buah Biblioteca Digital Universidad de Alcaláinstname:Universidad de Alcalá (UAH)InglésengMinisterio de Educación y Ciencia Not available CGL2007-60533 EFECTOS DE LA REVEGETACION (PASIVA Y ACTIVA) EN LA DINAMICA Y DIVERSIDAD DE ESPECIES LEÑOSAS Y AVESMCICYT Not available AGL2006-12609-C02-01%2FFOR Optimización de la nutrición de la encina en vivero: bases fisiológicas, técnicas de fertilización e implicaciones post-transplanteComunidad de Madrid http://dx.doi.org/10.13039/100012818 Not available S0505%2FAMB%2F0355 Programa de actividades de I+D de la Comunidad de Madrid sobre restauración del medio naturalopen accesshttp://purl.org/coar/access_right/c_abf2Atribución-NoComercial-SinDerivadas 3.0 Españahttp://creativecommons.org/licenses/by-nc-nd/3.0/es/info:eu-repo/semantics/openAccessoai:ebuah.uah.es:10017/213142026-06-18T11:13:07Z |
| dc.title.none.fl_str_mv |
Facilitation of Quercus ilex in Mediterranean shrubland is explained by both direct and indirect interactions mediated by herbs |
| title |
Facilitation of Quercus ilex in Mediterranean shrubland is explained by both direct and indirect interactions mediated by herbs |
| spellingShingle |
Facilitation of Quercus ilex in Mediterranean shrubland is explained by both direct and indirect interactions mediated by herbs Cuesta Poveda, Bárbara Chlorophyll fluorescence Herb competition Quercus ilex Retama sphaerocarpa Seedling size Water potential Ciencia Medio Ambiente Science Environmental science |
| title_short |
Facilitation of Quercus ilex in Mediterranean shrubland is explained by both direct and indirect interactions mediated by herbs |
| title_full |
Facilitation of Quercus ilex in Mediterranean shrubland is explained by both direct and indirect interactions mediated by herbs |
| title_fullStr |
Facilitation of Quercus ilex in Mediterranean shrubland is explained by both direct and indirect interactions mediated by herbs |
| title_full_unstemmed |
Facilitation of Quercus ilex in Mediterranean shrubland is explained by both direct and indirect interactions mediated by herbs |
| title_sort |
Facilitation of Quercus ilex in Mediterranean shrubland is explained by both direct and indirect interactions mediated by herbs |
| dc.creator.none.fl_str_mv |
Cuesta Poveda, Bárbara Villar Salvador, Pedro|||0000-0001-9338-4530 Rey Benayas, José María|||0000-0002-2099-8512 Puértolas Simón, Jaime Michalet, Richard |
| author |
Cuesta Poveda, Bárbara |
| author_facet |
Cuesta Poveda, Bárbara Villar Salvador, Pedro|||0000-0001-9338-4530 Rey Benayas, José María|||0000-0002-2099-8512 Puértolas Simón, Jaime Michalet, Richard |
| author_role |
author |
| author2 |
Villar Salvador, Pedro|||0000-0001-9338-4530 Rey Benayas, José María|||0000-0002-2099-8512 Puértolas Simón, Jaime Michalet, Richard |
| author2_role |
author author author author |
| dc.subject.none.fl_str_mv |
Chlorophyll fluorescence Herb competition Quercus ilex Retama sphaerocarpa Seedling size Water potential Ciencia Medio Ambiente Science Environmental science |
| topic |
Chlorophyll fluorescence Herb competition Quercus ilex Retama sphaerocarpa Seedling size Water potential Ciencia Medio Ambiente Science Environmental science |
| description |
1. Competitive and facilitative interactions shape plant communities. Whereas a number of studies have addressed competition and direct facilitation among plants in dry ecosystems, indirect facilitation has received little attention. 2. We investigated the relative importance of direct and indirect facilitation by the nurse plant Retama sphaerocarpa on late-successional Quercus ilex seedlings mediated by herb suppression in a Mediterranean shrubland in 2006 and 2007. We also studied whether facilitation outcome depended on the size of the facilitated seedlings. 3. A field experiment was carried out to test the effect of (i) position of Q. ilex seedling with respect to shrub canopy (under shrubs or in gaps), (ii) herb competition (presence or absence), and (iii) seedling size. 2006 was an average rainfall year while 2007 had a much more humid spring and a dryer summer than 2006. 4. In both years, nurse shrubs reduced seedling mortality whereas herbs increased it. In the average rainfall year, seedling mortality under shrubs was unaffected by herbs whereas in gaps it was signifi- cantly higher in presence of herbs. This showed that the nurse shrub indirectly facilitated the seedlings by reducing the competitive capacity of herbs. Conversely, facilitation was predominately direct during the humid spring and dry summer year since herbs hindered seedling survival similarly under the nurse shrub and in gaps. The nurse shrub directly facilitated the seedlings by reducing seedling photoinhibition and water stress. 5. Improvement of environmental conditions by Retama benefited smaller seedlings but not larger seedlings since the nurse shrub reduced mortality of smaller seedlings relative to that in gaps, but this effect was not observed for larger seedlings. This indicates that individuals within a seedling population may not have the same response to facilitation. 6. Synthesis. Both indirect and direct facilitation are important mechanisms for Q. ilex regeneration in Retama shrubland and their importance seems to vary with climatic conditions. Indirect facilitation by release of herb competition under nurse shrubs is important in years of dry springs when competition between nurse shrubs and herbs is high, whereas direct facilitation mediated by microclimate amelioration increases with summer aridity |
| publishDate |
2010 |
| dc.date.none.fl_str_mv |
2010 2010-01-01 |
| dc.type.none.fl_str_mv |
journal article http://purl.org/coar/resource_type/c_6501 NA http://purl.org/coar/version/c_be7fb7dd8ff6fe43 |
| dc.type.openaire.fl_str_mv |
info:eu-repo/semantics/article |
| format |
article |
| dc.identifier.none.fl_str_mv |
http://hdl.handle.net/10017/21314 https://dx.doi.org/10.1111/j.1365-2745.2010.01655.x |
| url |
http://hdl.handle.net/10017/21314 https://dx.doi.org/10.1111/j.1365-2745.2010.01655.x |
| dc.language.none.fl_str_mv |
Inglés eng |
| language_invalid_str_mv |
Inglés |
| language |
eng |
| dc.relation.none.fl_str_mv |
Ministerio de Educación y Ciencia Not available CGL2007-60533 EFECTOS DE LA REVEGETACION (PASIVA Y ACTIVA) EN LA DINAMICA Y DIVERSIDAD DE ESPECIES LEÑOSAS Y AVES MCICYT Not available AGL2006-12609-C02-01%2FFOR Optimización de la nutrición de la encina en vivero: bases fisiológicas, técnicas de fertilización e implicaciones post-transplante Comunidad de Madrid http://dx.doi.org/10.13039/100012818 Not available S0505%2FAMB%2F0355 Programa de actividades de I+D de la Comunidad de Madrid sobre restauración del medio natural |
| dc.rights.none.fl_str_mv |
open access http://purl.org/coar/access_right/c_abf2 Atribución-NoComercial-SinDerivadas 3.0 España http://creativecommons.org/licenses/by-nc-nd/3.0/es/ |
| dc.rights.openaire.fl_str_mv |
info:eu-repo/semantics/openAccess |
| rights_invalid_str_mv |
open access http://purl.org/coar/access_right/c_abf2 Atribución-NoComercial-SinDerivadas 3.0 España http://creativecommons.org/licenses/by-nc-nd/3.0/es/ |
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openAccess |
| dc.format.none.fl_str_mv |
application/pdf |
| dc.publisher.none.fl_str_mv |
John Wiley & Sons |
| publisher.none.fl_str_mv |
John Wiley & Sons |
| dc.source.none.fl_str_mv |
reponame:e_Buah Biblioteca Digital Universidad de Alcalá instname:Universidad de Alcalá (UAH) |
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Universidad de Alcalá (UAH) |
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e_Buah Biblioteca Digital Universidad de Alcalá |
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e_Buah Biblioteca Digital Universidad de Alcalá |
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15.301603 |