Mast seeding and flowering in Mediterranean oak woodlands under increasing drought: results from a long-term dataset and from a rainfall exclusion experiment
12 pages, 4 figures, 3 tables. I. M. Pérez-Ramos was supported by a postdoctoral fellowship from the Spanish Ministry of Science and Innovation. We are grateful to R. Rodríguez-Cortina for assistance in the field. El título que figura en el Repositorio Digital CSIC, corresponde a la versión pre-print autorizada. En Ecology 91(10) aparece titulado: Mast seeding under increasing drought: results from a long-term data set and from a rainfall exclusion experiment.
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| Format: | artículo biblioteca |
| Language: | English |
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Ecological Society of America
2010-10
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| Subjects: | Abortions, Acorn production, Economy-of-scale hypothesis, Global change, Masting cycles, Puéchabon State Forest, Southern France, Quercus ilex, Resource-matching hypothesis, Water stress, |
| Online Access: | http://hdl.handle.net/10261/40624 http://dx.doi.org/10.13039/501100000780 |
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dig-irnas-es-10261-406242016-02-17T02:16:24Z Mast seeding and flowering in Mediterranean oak woodlands under increasing drought: results from a long-term dataset and from a rainfall exclusion experiment Pérez-Ramos, Ignacio Manuel Ourcival, J. M. Limousin, J. M. Rambal, S. European Commission Abortions Acorn production Economy-of-scale hypothesis Global change Masting cycles Puéchabon State Forest Southern France Quercus ilex Resource-matching hypothesis Water stress 12 pages, 4 figures, 3 tables. I. M. Pérez-Ramos was supported by a postdoctoral fellowship from the Spanish Ministry of Science and Innovation. We are grateful to R. Rodríguez-Cortina for assistance in the field. El título que figura en el Repositorio Digital CSIC, corresponde a la versión pre-print autorizada. En Ecology 91(10) aparece titulado: Mast seeding under increasing drought: results from a long-term data set and from a rainfall exclusion experiment. Mast seeding, the synchronous, highly variable seed production among years, is very common in tree species, but there is no consensus about its main causes and the main environmental factors affecting it. In this study, we first analyze a long-term data set on reproductive and vegetative growth of Quercus ilex in a mediterranean woodland in order to identify the main environmental drivers of interannual variation in flower and seed production and contrast the impact of climate vs. adaptive factors as main causes of masting. Second, we conducted an experiment of rainfall exclusion to evaluate the effects of an increasing drought (simulating predictions of global change models) on both reproductive processes. The annual seed crop was always affected by environmental factors related to the precipitation pattern, these abiotic factors disrupting the fruiting process at different periods of time. Seed production was strongly dependent upon water availability for the plant at initial (spring) and advanced (summer) stages of the acorn maturation cycle, whereas the final step of seed development was negatively affected by the frequency of torrential-rain events. We also found clear evidence that seed masting in the study species is not only regulated by selective endogenous rhythms, but is mainly a physiological response to the variable environment. Our results from the rainfall exclusion experiment corroborated the conclusions obtained from the 26-year fruiting record and demonstrated that the high interannual variation in seed crop was mainly determined by the success in seed development rather than by the flowering effort. Under a global change scenario, it could be expected that the drier conditions predicted by climate models reinforce the negative effects of summer drought on seed production, leading to negative consequences for tree recruitment and forest dynamics. The rainfall exclusion experiment was performed within the framework of the European project MIND (EVK2-CT-2002-000158). Peer reviewed 2011-10-05T10:55:38Z 2011-10-05T10:55:38Z 2010-10 artículo http://purl.org/coar/resource_type/c_6501 Ecology 91 (10): 3057-3068 (2010) 0012-9658 http://hdl.handle.net/10261/40624 10.1890/09-2313.1 http://dx.doi.org/10.13039/501100000780 en http://dx.doi.org/10.1890/09-2313.1 http://www.esajournals.org/doi/abs/10.1890/09-2313.1 open Ecological Society of America |
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| topic |
Abortions Acorn production Economy-of-scale hypothesis Global change Masting cycles Puéchabon State Forest Southern France Quercus ilex Resource-matching hypothesis Water stress Abortions Acorn production Economy-of-scale hypothesis Global change Masting cycles Puéchabon State Forest Southern France Quercus ilex Resource-matching hypothesis Water stress |
| spellingShingle |
Abortions Acorn production Economy-of-scale hypothesis Global change Masting cycles Puéchabon State Forest Southern France Quercus ilex Resource-matching hypothesis Water stress Abortions Acorn production Economy-of-scale hypothesis Global change Masting cycles Puéchabon State Forest Southern France Quercus ilex Resource-matching hypothesis Water stress Pérez-Ramos, Ignacio Manuel Ourcival, J. M. Limousin, J. M. Rambal, S. Mast seeding and flowering in Mediterranean oak woodlands under increasing drought: results from a long-term dataset and from a rainfall exclusion experiment |
| description |
12 pages, 4 figures, 3 tables. I. M. Pérez-Ramos was supported by a postdoctoral
fellowship from the Spanish Ministry of Science and Innovation.
We are grateful to R. Rodríguez-Cortina for assistance in
the field. El título que figura en el Repositorio Digital CSIC, corresponde a la versión pre-print autorizada. En Ecology 91(10) aparece titulado: Mast seeding under increasing drought: results from a long-term data set and from a rainfall exclusion experiment. |
| author2 |
European Commission |
| author_facet |
European Commission Pérez-Ramos, Ignacio Manuel Ourcival, J. M. Limousin, J. M. Rambal, S. |
| format |
artículo |
| topic_facet |
Abortions Acorn production Economy-of-scale hypothesis Global change Masting cycles Puéchabon State Forest Southern France Quercus ilex Resource-matching hypothesis Water stress |
| author |
Pérez-Ramos, Ignacio Manuel Ourcival, J. M. Limousin, J. M. Rambal, S. |
| author_sort |
Pérez-Ramos, Ignacio Manuel |
| title |
Mast seeding and flowering in Mediterranean oak woodlands under increasing drought: results from a long-term dataset and from a rainfall exclusion experiment |
| title_short |
Mast seeding and flowering in Mediterranean oak woodlands under increasing drought: results from a long-term dataset and from a rainfall exclusion experiment |
| title_full |
Mast seeding and flowering in Mediterranean oak woodlands under increasing drought: results from a long-term dataset and from a rainfall exclusion experiment |
| title_fullStr |
Mast seeding and flowering in Mediterranean oak woodlands under increasing drought: results from a long-term dataset and from a rainfall exclusion experiment |
| title_full_unstemmed |
Mast seeding and flowering in Mediterranean oak woodlands under increasing drought: results from a long-term dataset and from a rainfall exclusion experiment |
| title_sort |
mast seeding and flowering in mediterranean oak woodlands under increasing drought: results from a long-term dataset and from a rainfall exclusion experiment |
| publisher |
Ecological Society of America |
| publishDate |
2010-10 |
| url |
http://hdl.handle.net/10261/40624 http://dx.doi.org/10.13039/501100000780 |
| work_keys_str_mv |
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| _version_ |
1777664220509241344 |