1. Diverging shrub and tree growth from the Polar to the Mediterranean biomes across the European continent
- Author
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Marco Carrer, J. Julio Camarero, Rohan Shetti, Antonio Gazol, Elena Pellizzari, Mario Pividori, Pavel Moiseev, Martin Wilmking, and Elena Granda
- Subjects
0106 biological sciences ,Mediterranean climate ,010504 meteorology & atmospheric sciences ,ved/biology.organism_classification_rank.species ,Biome ,Microclimate ,Climate change ,010603 evolutionary biology ,01 natural sciences ,Shrub ,Dendroecology ,Trees ,Climate warming ,Tree growth ,Junipers ,Latitudinal transect ,Thermal uncoupling ,Global and Planetary Change ,Environmental Chemistry ,Ecology ,2300 ,Ecosystem ,0105 earth and related environmental sciences ,General Environmental Science ,biology ,ved/biology ,Global warming ,Temperature ,biology.organism_classification ,Droughts ,Europe ,Geography ,Juniperus ,Juniper ,Woody plant - Abstract
Climate warming is expected to enhance productivity and growth of woody plants, particularly in temperature-limited environments at the northernmost or uppermost limits of their distribution. However, this warming is spatially uneven and temporally variable, and the rise in temperatures differently affects biomes and growth forms. Here, applying a dendroecological approach with generalized additive mixed models, we analysed how the growth of shrubby junipers and coexisting trees (larch and pine species) responds to rising temperatures along a 5000-km latitudinal range including sites from the Polar, Alpine to the Mediterranean biomes. We hypothesize that, being more coupled to ground microclimate, junipers will be less influenced by atmospheric conditions and will less respond to the post-1950 climate warming than coexisting standing trees. Unexpectedly, shrub and tree growth forms revealed divergent growth trends in all the three biomes, with juniper performing better than trees at Mediterranean than at Polar and Alpine sites. The post-1980s decline of tree growth in Mediterranean sites might be induced by drought stress amplified by climate warming and did not affect junipers. We conclude that different but coexisting long-living growth forms can respond differently to the same climate factor and that, even in temperature-limited area, other drivers like the duration of snow cover might locally play a fundamental role on woody plants growth across Europe.
- Published
- 2017
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