Stabilizing effects of diversity on aboveground wood production in forest ecosystems: linking patterns and processes

Ecology Letters - Tập 17 Số 12 - Trang 1560-1569 - 2014
Tommaso Jucker1, Olivier Bouriaud2, Daniel Avăcăriței2, David A. Coomes1
1Department of Plant Sciences, University of Cambridge, Downing Street, Cambridge CB2 3EA, UK
2Forestry Faculty, University Stefan cel Mare of Suceava, Suceava, Romania, 13 Universitatii Street, 720229

Tóm tắt

AbstractBoth theory and evidence suggest that diversity stabilises productivity in herbaceous plant communities through a combination of overyielding, species asynchrony and favourable species interactions. However, whether these same processes also promote stability in forest ecosystems has never been tested. Using tree ring data from permanent forest plots across Europe, we show that aboveground wood production is inherently more stable through time in mixed‐species forests. Faster rates of wood production (i.e. overyielding), decreased year‐to‐year variation in productivity through asynchronous responses of species to climate, and greater temporal stability in the growth rates of individual tree species all contributed strongly to stabilising productivity in mixed stands. Together, these findings reveal the central role of diversity in stabilising productivity in forests, and bring us closer to understanding the processes which enable diverse forests to remain productive under a wide range of environmental conditions.

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Ecology Letters

Tập 17 Số 12

1560-1569

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