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Community-level regulation of temporal trends in biodiversity

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posted on 11.08.2017, 09:46 authored by Nicholas J. Gotelli, Hideyasu ShimadzuHideyasu Shimadzu, Maria Dornelas, Brian McGill, Faye Moyes, Anne E. Magurran
Many theoretical models of community dynamics predict that species richness (S) and total abundance (N) are regulated in their temporal fluctuations. We present novel evidence for widespread regulation of biodiversity. For 59 plant and animal assemblages from around the globe monitored annually for a decade or more, the majority exhibited regulated fluctuations compared to the null hypothesis of an unconstrained random walk. However, there was little evidence for statistical artifacts, regulation driven by correlations with average annual temperature, or local-scale compensatory fluctuations in S or N. In the absence of major environmental perturbations, such as urbanization or cropland transformation, species richness and abundance may be buffered and exhibit some resilience in their temporal trajectories. These results suggest that regulatory processes are occurring despite unprecedented environmental change, highlighting the need for community-level assessment of biodiversity trends, as well as extensions of existing theory to address open source pools and shifting environmental conditions.

Funding

N.J.G. was supported by the NSF (DEB 1257625, DEB 1144055, and DEB 1136644). A.E.M. acknowledges support from ERC AgG BioTIME (250189), ERC PoC BioCHANGE (727440), and the Royal Society. M.D. is grateful for the support from the Scottish Funding Council (Marine Alliance for Science and Technology for Scotland grant reference HR09011).

History

School

  • Science

Department

  • Mathematical Sciences

Published in

Science Advances

Volume

3

Issue

7

Citation

GOTELLI, N.J. ... et al, 2017. Community-level regulation of temporal trends in biodiversity. Science Advances, 3 (7), e1700315.

Publisher

American Association for the Advancement of Science (AAAS) © The Authors

Version

VoR (Version of Record)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) licence. Full details of this licence are available at: http://creativecommons.org/licenses/by-nc/4.0/

Acceptance date

21/06/2017

Publication date

2017-07-26

Notes

This paper was accepted for publication in the journal Science Advances and is also available at http://dx.doi.org/10.1126/sciadv.1700315.

eISSN

2375-2548

Language

en

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