Early emergence enhances plant fitness: A phylogenetically controlled meta-analysis
11 páginas, 3 figuras, 2 tablas.
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| Language: | English |
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Ecological Society of America
2005-06
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| Subjects: | Comparative methods, Life-form, Meta-analysis, Phylogenetic signal, Seed size, Seedling emergence, |
| Online Access: | http://hdl.handle.net/10261/59556 http://dx.doi.org/10.13039/501100003329 |
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dig-cide-es-10261-595562020-05-21T12:16:22Z Early emergence enhances plant fitness: A phylogenetically controlled meta-analysis Verdú, Miguel Traveset, Anna Ministerio de Economía y Competitividad (España) Ministerio de Educación y Ciencia (España) Comparative methods Life-form Meta-analysis Phylogenetic signal Seed size Seedling emergence 11 páginas, 3 figuras, 2 tablas. The time at which a seedling emerges can determine its future success as a plant. Despite the large number of studies that have examined the effect of emergence time on. different components of plant fitness (survival, growth, and/or fecundity), the potential evolutionary response to selection on seedling emergence date is still poorly known. In this study, we review 55 of those studies by a random-effects meta-analysis, considering the phytogenetic relatedness among taxa. We test the following hypotheses: (1) early emergence increases seedling survival, growth, and fecundity, (2) early emergence is more advantageous to large-seeded species than to small-seeded ones, as the former can compensate for the lower number of seeds by increasing seedling survival, (3) perennial plants benefit more than annuals from early emergence, as the iteroparity of the former allows them to risk seedling emergence to the best conditions each year, whereas the semelparity of the latter forces them to spread the risk of emergence over time, and (4) the effect of emergence time may depend upon the experimental conditions (field vs. controlled experiments in a greenhouse or laboratory). Our results show that early emergence differentially affects components of plant fitness, with no effect on seedling survival but large benefits to seedling growth and fecundity. Such effects vary depending upon intrinsic factors like seed size or life-form, and also upon methodology (census time and experimental conditions). Large-seeded species gain from emerging early by growing more during their first growing seasons, although they survive and reproduce similarly to small-seeded species. The survival benefit of early emergence is greater in perennial than in annual species, thus supporting hypothesis 3. The relationship between emergence time and seedling growth appears to be stronger under controlled conditions than in the field, probably as a result of the unlimited nutrient and water resources of the former. In field conditions, in contrast, limited resources probably decelerate the growth of early seedlings, precluding the detection of differences between these and late seedlings. We are grateful to all authors who provided us their un- published data and to C. M. Herrera and J. Sánchez-Meca for helpful suggestions on the design of the study. P. García- Fayos, C. Martínez del Rio, and J. Pannell provided valuable comments on the manuscript. T. Garland and D. B. Wilson helped us in the use of the comparative method and meta- analysis software. This work is framed within projects AGL2001-1061 to M.Verdú and BOS2001-0610 to A. Tra- veset. M. Verdú was granted a Ramón y Cajal contract from the Ministerio de Educación y Ciencia Español during the preparation of this manuscript. Peer reviewed 2012-11-06T12:06:26Z 2012-11-06T12:06:26Z 2005-06 artículo http://purl.org/coar/resource_type/c_6501 Ecology - Ecological Society of America 86(6): 1385-1394 (2005) 0012-9658 http://hdl.handle.net/10261/59556 10.1890/04-1647 http://dx.doi.org/10.13039/501100003329 en http://dx.doi.org/10.1890/04-1647 none Ecological Society of America |
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| topic |
Comparative methods Life-form Meta-analysis Phylogenetic signal Seed size Seedling emergence Comparative methods Life-form Meta-analysis Phylogenetic signal Seed size Seedling emergence |
| spellingShingle |
Comparative methods Life-form Meta-analysis Phylogenetic signal Seed size Seedling emergence Comparative methods Life-form Meta-analysis Phylogenetic signal Seed size Seedling emergence Verdú, Miguel Traveset, Anna Early emergence enhances plant fitness: A phylogenetically controlled meta-analysis |
| description |
11 páginas, 3 figuras, 2 tablas. |
| author2 |
Ministerio de Economía y Competitividad (España) |
| author_facet |
Ministerio de Economía y Competitividad (España) Verdú, Miguel Traveset, Anna |
| format |
artículo |
| topic_facet |
Comparative methods Life-form Meta-analysis Phylogenetic signal Seed size Seedling emergence |
| author |
Verdú, Miguel Traveset, Anna |
| author_sort |
Verdú, Miguel |
| title |
Early emergence enhances plant fitness: A phylogenetically controlled meta-analysis |
| title_short |
Early emergence enhances plant fitness: A phylogenetically controlled meta-analysis |
| title_full |
Early emergence enhances plant fitness: A phylogenetically controlled meta-analysis |
| title_fullStr |
Early emergence enhances plant fitness: A phylogenetically controlled meta-analysis |
| title_full_unstemmed |
Early emergence enhances plant fitness: A phylogenetically controlled meta-analysis |
| title_sort |
early emergence enhances plant fitness: a phylogenetically controlled meta-analysis |
| publisher |
Ecological Society of America |
| publishDate |
2005-06 |
| url |
http://hdl.handle.net/10261/59556 http://dx.doi.org/10.13039/501100003329 |
| work_keys_str_mv |
AT verdumiguel earlyemergenceenhancesplantfitnessaphylogeneticallycontrolledmetaanalysis AT travesetanna earlyemergenceenhancesplantfitnessaphylogeneticallycontrolledmetaanalysis |
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1777665490465849344 |