Identifying mechanisms that structure ecological communities by snapping model parameters to empirically observed tradeoffs

Ecology Letters
Adam Thomas ClarkDavid Tilman

Abstract

Theory predicts that interspecific tradeoffs are primary determinants of coexistence and community composition. Using information from empirically observed tradeoffs to augment the parametrisation of mechanism-based models should therefore improve model predictions, provided that tradeoffs and mechanisms are chosen correctly. We developed and tested such a model for 35 grassland plant species using monoculture measurements of three species characteristics related to nitrogen uptake and retention, which previous experiments indicate as important at our site. Matching classical theoretical expectations, these characteristics defined a distinct tradeoff surface, and models parameterised with these characteristics closely matched observations from experimental multi-species mixtures. Importantly, predictions improved significantly when we incorporated information from tradeoffs by 'snapping' characteristics to the nearest location on the tradeoff surface, suggesting that the tradeoffs and mechanisms we identify are important determinants of local community structure. This 'snapping' method could therefore constitute a broadly applicable test for identifying influential tradeoffs and mechanisms.

References

May 1, 1970·Theoretical Population Biology·R MacArthur
Apr 23, 2004·Nature·Ian J WrightRafael Villar
Apr 12, 2005·The New Phytologist·Ian J WrightMark Westoby
May 17, 2006·Trends in Ecology & Evolution·Brian J McGillMark Westoby
Feb 20, 2007·Journal of Evolutionary Biology·D A Roff, D J Fairbairn
Sep 20, 2007·The American Naturalist·Ray Dybzinski, David Tilman
Jun 17, 2008·Science·Drew Purves, Stephen Pacala
Dec 9, 2008·Proceedings of the National Academy of Sciences of the United States of America·S Joseph WrightRan Nathan
Aug 11, 2011·The American Naturalist·David Tilman
Jan 3, 2013·Ecology Letters·Lindsay Ann TurnbullAndy Hector
Mar 16, 2013·Ecology Letters·Rhett D HarrisonStuart J Davies
Mar 19, 2013·The New Phytologist·Simon ScheiterSteven I Higgins
Aug 6, 2013·Ecology Letters·Peter B AdlerNathan J B Kraft
Dec 25, 2015·Nature·Georges KunstlerMark Westoby
Jan 23, 2016·Oecologia·Bill ShipleyPeter B Reich
Oct 25, 2016·Trends in Ecology & Evolution·Margaret E K EvansBrian J Enquist
Sep 27, 2016·Global Ecology and Biogeography : a Journal of Macroecology·Felix MayMarie-Josée Fortin
Jun 2, 2017·Nature·Jonathan M LevineStefano Allesina

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