4.6 Article

Asynchrony Drives Plant and Animal Community Stability in Mediterranean Coastal Dunes

Journal

APPLIED SCIENCES-BASEL
Volume 11, Issue 13, Pages -

Publisher

MDPI
DOI: 10.3390/app11136214

Keywords

community stability; covariance effect; biodiversity; population stability; species richness; species synchrony; diversity-stability relationship; coastal dunes; multi-taxa; cross-taxa congruence

Funding

  1. Israel Nature and Parks Authority, (INPA)
  2. International Arid Land Consortium (IALC)

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The positive relationship between diversity and stability is well-supported, with asynchrony playing a key role in driving community stability for both flora and fauna. Richness and environmental conditions have varying effects on stability across different taxonomic groups, highlighting the importance of species interactions and responses to the environment in determining stability.
Substantial evidence now suggests that a positive diversity-stability relationship exists. Yet few studies examine the facets of biodiversity that contribute to this relationship, and empirical research is predominantly conducted on grassland communities under controlled conditions. We investigate the roles of species richness, environmental condition (vegetation cover), asynchrony, and weighted population stability in driving community stability across multiple taxa. We used data from a Long-term Ecological Research project to investigate temporal stability of annual plants, beetles, reptiles, and rodents in Nizzanim Coastal Sand Dune Nature Reserve in Israel. All four taxa had a strong positive relationship between asynchrony and community stability. Only rodents showed a positive richness-stability relationship. Perennial plant cover had a significant relationship with community stability for three taxa, but the direction of the correlation varied. Asynchrony had a stronger relationship with perennial plant cover than it did with richness for both plants and beetles. We suggest that community stability is driven by asynchrony for flora as well as fauna. Stability appears to be determined by species' interactions and their responses to the environment, and not always by diversity. This has important consequences for understanding the effects of environmental degradation on ecosystem stability and productivity, which have destabilizing consequences beyond biodiversity loss.

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