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General destabilizing effects of eutrophication on grassland productivity at multiple spatial scales
journal contribution
posted on 2020-11-09, 00:25 authored by Y Hautier, P Zhang, M Loreau, KR Wilcox, EW Seabloom, ET Borer, JEK Byrnes, SE Koerner, KJ Komatsu, JS Lefcheck, A Hector, PB Adler, J Alberti, CA Arnillas, JD Bakker, LA Brudvig, MN Bugalho, M Cadotte, MC Caldeira, O Carroll, M Crawley, SL Collins, P Daleo, LE Dee, N Eisenhauer, A Eskelinen, PA Fay, B Gilbert, A Hansar, F Isbell, JMH Knops, AS MacDougall, RL McCulley, JL Moore, John MorganJohn Morgan, AS Mori, PL Peri, ET Pos, SA Power, JN Price, PB Reich, AC Risch, C Roscher, M Sankaran, M Schütz, M Smith, C Stevens, PM Tognetti, R Virtanen, GM Wardle, PA Wilfahrt, S Wang© 2020, The Author(s). Eutrophication is a widespread environmental change that usually reduces the stabilizing effect of plant diversity on productivity in local communities. Whether this effect is scale dependent remains to be elucidated. Here, we determine the relationship between plant diversity and temporal stability of productivity for 243 plant communities from 42 grasslands across the globe and quantify the effect of chronic fertilization on these relationships. Unfertilized local communities with more plant species exhibit greater asynchronous dynamics among species in response to natural environmental fluctuations, resulting in greater local stability (alpha stability). Moreover, neighborhood communities that have greater spatial variation in plant species composition within sites (higher beta diversity) have greater spatial asynchrony of productivity among communities, resulting in greater stability at the larger scale (gamma stability). Importantly, fertilization consistently weakens the contribution of plant diversity to both of these stabilizing mechanisms, thus diminishing the positive effect of biodiversity on stability at differing spatial scales. Our findings suggest that preserving grassland functional stability requires conservation of plant diversity within and among ecological communities.
History
School
- School of Life Sciences
Publication Date
2020-10-23Journal
Nature CommunicationsVolume
11Issue
1Article Number
5375Pagination
9p.Publisher
Springer NatureISSN
2041-1723Rights Statement
The Author reserves all moral rights over the deposited text and must be credited if any re-use occurs. Documents deposited in OPAL are the Open Access versions of outputs published elsewhere. Changes resulting from the publishing process may therefore not be reflected in this document. The final published version may be obtained via the publisher’s DOI. Please note that additional copyright and access restrictions may apply to the published version.Publisher DOI
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