Stabilizing effects in temporal fluctuations: management, traits, and species richness in high-diversity communities

Ecology
Jan LepšFrancesco de Bello

Abstract

The loss of biodiversity is thought to have adverse effects on multiple ecosystem functions, including the decline of community stability. Decreased diversity reduces the strength of the portfolio effect, a mechanism stabilizing community temporal fluctuations. Community stability is also expected to decrease with greater variability in individual species populations and with synchrony of their fluctuations. In semi-natural meadows, eutrophication is one of the most important drivers of diversity decline; it is expected to increase species fluctuations and synchrony among them, all effects leading to lower community stability. With a 16-year time series of biomass data from a temperate species-rich meadow with fertilization and removal of the dominant species, we assessed population biomass temporal (co)variation under different management types and competition intensity, and in relation to species functional traits and to species diversity. Whereas the effect of dominant removal was relatively small (with a tendency toward lower stability), fertilization markedly decreased community stability (i.e., increased coefficient of variation in the total biomass) and species diversity. On average, the fluctuations of individual popula...Continue Reading

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Citations

Nov 7, 2019·Ecology Letters·Eyal Ben-Hur, Ronen Kadmon
Sep 10, 2020·Proceedings of the National Academy of Sciences of the United States of America·Enrique ValenciaLars Götzenberger
Aug 29, 2018·Nature Ecology & Evolution·Dylan CravenPeter Manning
Jun 6, 2021·Trends in Ecology & Evolution·Francesco de BelloJan Lepš
Jul 20, 2021·Trends in Ecology & Evolution·Allison M LouthanLauren G Shoemaker

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