Impacts of warming and changes in precipitation frequency on theregeneration of two Acer species

• Autores: Carón, María Mercedes; de Frenne, P.; Chabrerie, O.; Cousins, S. O. A.; De Backer, L.; Decocq, G.; Diekmann, M.; Heinken, T.; Kolb, A.; Naaf, T.; Plue, J.; Selvi, F.; Strimbeck, G. R.; Wulf, M.; Verheyen, K.
• Año de publicación: 2015
• Idioma: inglés
• Tipo de recurso: artículo
• Materia: Seed Provenance; Germination; Climate Change; Interactive Effects
• Institución: Consejo Nacional de Investigaciones Científicas y Técnicas

Climate projections indicate that temperatures will increase by up to 4.5 °C in Europe by the end of this century, and that more extreme rainfall events and longer intervening dry periods will take place. Climate change will likely affect all phases of the life cycle of plants, but plant reproduction has been suggested to be especially sensitive. Here, using a combination of approaches (soil heaters and different provenances along a latitudinal gradient), we analyzed the regeneration from seeds of Acer platanoides and A. pseudoplatanus, two tree species considered, from a management point of view, of secondary relevance. We studied germination, seedling survival and growth in a full-factorial experiment including warming and changes in watering frequency. Both species responded to warming, watering frequency and seed provenance, with stronger (negative) effects of warming and provenance than of watering frequency. In general, the central provenances performed better than the northernmost and southernmost provenances. We also detected interactive effects between warming, watering frequency and/or seed provenance. Based on these results, both species are expected to show dissimilar responses to the changes in the studied climatic factors, but also the impacts of climate change on the different phases of plant regeneration may differ in direction and magnitude. In general increases in the precipitation, frequency will stimulate germination while warming will reduce survival and growth. Moreover, the frequent divergent responses of seedlings along the latitudinal gradient suggest that climate change will likely have heterogeneous impacts across Europe, with stronger impacts in the northern and southern parts of the species’ distribution ranges.
Fil: Carón, María Mercedes. University of Ghent; Bélgica. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Salta; Argentina
Fil: de Frenne, P.. University of Ghent; Bélgica
Fil: Chabrerie, O.. Jules Verne University of Picardie. UR Ecologie et Dynamique des Systèmes Anthropisés; Francia
Fil: Cousins, S. O. A.. Stockholms Universitet; Suecia
Fil: De Backer, L.. Sylva nurseries BVBA; Bélgica
Fil: Decocq, G.. Jules Verne University of Picardie. UR Ecologie et Dynamique des Systèmes Anthropisés; Francia
Fil: Diekmann, M.. Universitat Bremen; Alemania
Fil: Heinken, T.. University of Potsdam. Institute of Biochemistry and Biology. Biodiversity and Systematic Botany; Alemania
Fil: Kolb, A.. Universitat Bremen; Alemania
Fil: Naaf, T.. Leibniz-Centre for Agricultural Landscape Research. Institute of Land Use Systems; Alemania
Fil: Plue, J.. Stockholms Universitet; Suecia
Fil: Selvi, F.. Universita Degli Studi Di Firenze; Italia
Fil: Strimbeck, G. R.. Norwegian University of Science and Technology. Department of Biology; Italia
Fil: Wulf, M.. Leibniz-Centre for Agricultural Landscape Research. Institute of Land Use Systems; Alemania
Fil: Verheyen, K.. University of Ghent; Bélgica