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Reproductive patterns in Araucaria araucana forests in the Andean range, Chile

dc.contributor.authorDonoso, Sergio R.
dc.contributor.authorPeña-Rojas, Karen
dc.contributor.authorEspinoza, Claudia
dc.contributor.authorBadaracco, Carolain
dc.contributor.authorSantelices-Moya, Rómulo
dc.contributor.authorCabrera-Ariza, Antonio
dc.date.accessioned2024-04-16T19:25:29Z
dc.date.available2024-04-16T19:25:29Z
dc.date.issued2024
dc.identifier.urihttp://repositorio.ucm.cl/handle/ucm/5323
dc.description.abstractBackground Araucaria araucana is a mast species that presents a high variability in annual cone production. Researchers have recorded synchronization events in cone production in different populations, which allows the seed production to be concentrated, reducing the percentage of seeds consumed by different animal species. Methods We sampled three populations located in the Andes Mountains, Araucanía Region, Chile. In 2004 we began the collection of data on cone production, for which we installed permanent plots (1200 m2 each) at each location. We identified and labeled each female tree in each plot to monitor its cone production. In 2012 we selected a total of 30 trees near the plots to evaluate the number of seeds per cone. In each February from 2012 to 2014 we selected two mature cones and covered them with a porous mesh for subsequent collection and storage in March. At the beginning of June, we counted and weighed the seeds, determining the average weight, the number of seeds per cone, the germination capacity (GC), and the germination speed (GS). Results Cone production was synchronous across the three locations. We observed significant differences among the locations and years evaluated. The cones had fewer seeds in 2013 (high production) compared to those in 2012 (low production), but their weights were similar. In 2014 the cones produced smaller seeds in fewer quantities. The difference between the years 2013 and 2014 resulted from the high-energy expenditure in 2013. Regarding GC and GS, there were significant differences among the three locations (GC: F = 45.41, p < 0.01; GS: F = 96.08, p < 0.01), where the highest values were observed in 2013. Conclusions Both GC and GS are related to seed weight but not to the number of cones produced in a given year. These annual fluctuations in seed production are determining factors in the population dynamics of forest species. Our results allow a better understanding of the reproductive phenology of A. araucana and could help define sustainable use and conservation actions for this species.es_CL
dc.language.isoenes_CL
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 Chile*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/cl/*
dc.sourceEcological Processes, 13(1), 19es_CL
dc.subjectSeed weightes_CL
dc.subjectGermination potentiales_CL
dc.subjectMasting specieses_CL
dc.subjectSustainable usees_CL
dc.subjectDioecious specieses_CL
dc.titleReproductive patterns in Araucaria araucana forests in the Andean range, Chilees_CL
dc.typeArticlees_CL
dc.ucm.facultadFacultad de Ciencias Agrarias y Forestaleses_CL
dc.ucm.indexacionScopuses_CL
dc.ucm.uriecologicalprocesses.springeropen.com/articles/10.1186/s13717-024-00497-6es_CL
dc.ucm.doidoi.org/10.1186/s13717-024-00497-6es_CL


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Atribución-NoComercial-SinDerivadas 3.0 Chile
Excepto si se señala otra cosa, la licencia de la publicación se describe como Atribución-NoComercial-SinDerivadas 3.0 Chile