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Journal Article

Loss of competitive strength in European conifer species under climate change

Authors

Grünig,  Marc
External Organizations;

Rammer,  Werner
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Baumann,  Martin
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Albrich,  Katharina
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André,  Frédéric
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Augustynczik,  Audrey L.D.
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Bohn,  Friedrich
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Bouwman,  Meike
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Bugmann,  Harald
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Collati,  Alessio
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Cristal,  Irina
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Dalmonech,  Daniela
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De Caceres,  Miquel
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De Coligny,  Francois
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Dobor,  Laura
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Dollinger,  Christina
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Forrester,  David I.
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Garcia-Gonzalo,  Jordi
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González-Olabarria,  José Ramón
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Hiltner,  Ulrike
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Hlásny,  Tomáš
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Honkaniemi,  Juha
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Huber,  Nico
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Huth,  Andreas
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Jonard,  Mathieu
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Jönsson,  Anna Maria
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Lagergren,  Frederik
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Mina,  Marco
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Mohren,  Frits
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Moos,  Christine
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Morin,  Xavier
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Muys,  Bart
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/persons/resource/mahnken

Nieberg,  Mats       
Potsdam Institute for Climate Impact Research;

Peltoniemi,  Mikko
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/persons/resource/Reyer

Reyer,  Christopher P. O.       
Potsdam Institute for Climate Impact Research;

Storms,  Ilié
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Thom,  Dominik
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Toigo,  Maude
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Seidl,  Rupert
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Citation

Grünig, M., Rammer, W., Baumann, M., Albrich, K., André, F., Augustynczik, A. L., Bohn, F., Bouwman, M., Bugmann, H., Collati, A., Cristal, I., Dalmonech, D., De Caceres, M., De Coligny, F., Dobor, L., Dollinger, C., Forrester, D. I., Garcia-Gonzalo, J., González-Olabarria, J. R., Hiltner, U., Hlásny, T., Honkaniemi, J., Huber, N., Huth, A., Jonard, M., Jönsson, A. M., Lagergren, F., Mina, M., Mohren, F., Moos, C., Morin, X., Muys, B., Nieberg, M., Peltoniemi, M., Reyer, C. P. O., Storms, I., Thom, D., Toigo, M., Seidl, R. (in press): Loss of competitive strength in European conifer species under climate change. - Communications Earth and Environment.


Cite as: https://publications.pik-potsdam.de/pubman/item/item_34370
Abstract
Climate change is expected to alter species assemblages by affecting the outcome of competition between species. Investigating processes of competition remains challenging particularly in tree communities, as they unfold over extensive spatio-temporal scales. Here, we developed a deep-learning approach to leverage a novel database of 135 million simulated local-scale tree responses to climate across continental Europe to investigate changes in the competitiveness of nine major tree species under different scenarios of climate change. Specifically, we trained a Deep Neural Network on local process model projections to investigate climate change effects on indicators of competitive strength and species dominance. We found decreasing competitive strength for all investigated evergreen coniferous species across their distribution, while major deciduous broadleaved species such as Quercus robur and Fagus sylvatica increased in competitiveness. Changes in tree species competition with climate differed locally, but most investigated species lost competitive strength at their warm range edges. As a consequence of these changes, up to 19% of Europe’s forests could experience a change in the dominant tree species until the end of the 21st century. Our results suggest a profound climate-induced reassembly of Europe’s forests and identify areas that may require specific attention in forest policy and management.