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The Moran effect and environmental vetoes : phenological synchrony and drought drive seed production in a Mediterranean oak
Bogdziewicz, Michał (Centre de Recerca Ecològica i Aplicacions Forestals)
Fernández Martínez, Marcos (Centre de Recerca Ecològica i Aplicacions Forestals)
Bonal, Raúl (Instituto de Investigación de la Dehesa)
Belmonte, Jordina (Universitat Autònoma de Barcelona. Institut de Ciència i Tecnologia Ambientals)
Espelta Morral, Josep Maria (Centre de Recerca Ecològica i Aplicacions Forestals)

Fecha: 2017
Resumen: Masting is the highly variable production of synchronized seed crops, and is a common reproductive strategy in plants. Weather has long been recognized as centrally involved in driving seed production in masting plants. However, the theory behind mechanisms connecting weather and seeding variation has only recently been developed, and still lacks empirical evaluation. We used 12-year long seed production data for 255 holm oaks (Quercus ilex), as well as airborne pollen and meteorological data, and tested whether masting is driven by environmental constraints: phenological synchrony and associated pollination efficiency, and drought-related acorn abscission. We found that warm springs resulted in short pollen seasons, and length of the pollen seasons was negatively related to acorn production, supporting the phenological synchrony hypothesis. Furthermore, the relationship between phenological synchrony and acorn production was modulated by spring drought, and effects of environmental vetoes on seed production were dependent on last year's environmental constraint, implying passive resource storage. Both vetoes affected among-tree synchrony in seed production. Finally, precipitation preceding acorn maturation was positively related to seed production, mitigating apparent resource depletion following high crop production in the previous year. These results provide new insights into mechanisms beyond widely reported weather and seed production correlations.
Nota: Unidad de excelencia María de Maeztu MdM-2015-0552
Nota: Número d'acord de subvenció EC/FP7/610028
Nota: Número d'acord de subvenció MINECO/CGL2015-70558-P
Nota: Número d'acord de subvenció MINECO/CGL2012-33398
Nota: Número d'acord de subvenció AGAUR/2014/SGR-913
Derechos: Tots els drets reservats
Lengua: Anglès.
Documento: article ; recerca ; acceptedVersion
Materia: Moran effect ; Environmental constraint ; Mast seeding ; Phenological synchrony hypothesis ; Seed abscission ; Seed production
Publicado en: Proceedings of the Royal Society B, Vol. 284, issue 1866 (Nov. 2017) , art. 1784, ISSN 0962-8452

DOI: 10.1098/rspb.2017.1784
PMID: 29093224


Post-print
24 p, 1.4 MB

El registro aparece en las colecciones:
Documentos de investigación > Documentos de los grupos de investigación de la UAB > Centros y grupos de investigación (producción científica) > Ciencias > CREAF (Centre de Recerca Ecològica i d'Aplicacions Forestals) > Imbalance-P
Documentos de investigación > Documentos de los grupos de investigación de la UAB > Centros y grupos de investigación (producción científica) > Ciencias > Institut de Ciència i Tecnologia Ambientals (ICTA)
Artículos > Artículos de investigación
Artículos > Artículos publicados

 Registro creado el 2018-01-25, última modificación el 2019-02-02



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