The distribution of positive and negative species interactions across environmental gradients on a dual-lattice model

Journal of Theoretical Biology
Justin M J TravisC Dytham

Abstract

There has been considerable recent interest in understanding the role of positive inter-specific interactions within ecology, and significant progress has been made both empirically and theoretically. Similarly, considerable progress has been made in improving our understanding of the mechanisms that limit species' ranges. In this contribution, we seek to understand the setting of species' borders when some species within the assemblage exhibit positive inter-specific interactions. We use a spatially explicit dual-lattice simulation model to explore the distribution of different interactions across environmental gradients. We first simulate community dynamics when there is either a gradient in reproductive rate or in mortality. We then consider what happens when gradients in reproduction and mortality run in parallel or perpendicular to one another. If the stress gradient impacts on reproductive potential, positive interactions are found where there is high abiotic stress. In this instance, the mutualists are able to tolerate an environment that the cheaters cannot. However, when the stress gradient influences mortality, we find that the mutualists occur as a stripe surrounded by cheaters both towards the better and the harsher...Continue Reading

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Citations

Apr 26, 2013·Journal of Theoretical Biology·Hideo Ezoe, Yusuke Ikegawa
Mar 28, 2009·Proceedings. Biological Sciences·Robert D Holt, Michael Barfield
Jan 5, 2008·Conservation Biology : the Journal of the Society for Conservation Biology·Martin DrechslerFrank Wätzold
Dec 15, 2015·The American Naturalist·Odrade NouguéThomas Lenormand
Sep 15, 2012·Journal of Theoretical Biology·Hideo Ezoe
Jul 27, 2010·Journal of Theoretical Biology·K E Atkins, J M J Travis
Aug 1, 2009·Journal of Theoretical Biology·Atsushi YamauchiTakayuki Ohgushi
Oct 30, 2007·Journal of Theoretical Biology·Frederic Guichard, Robin Steenweg
Dec 2, 2006·Trends in Ecology & Evolution·Peter H ThrallJames D Bever
Mar 4, 2011·Ecology Letters·Richard MichaletThomas G Whitham
Jan 13, 2012·The New Phytologist·Clare TrinderDavid Robinson
Dec 3, 2014·Journal of Theoretical Biology·George P Malanson, Lynn M Resler
Jun 25, 2013·Journal of Theoretical Biology·Michel Droz, Andrzej Pękalski
Jul 2, 2020·The Journal of Animal Ecology·Tad DallasGrant Foster
Jul 12, 2017·Ecology and Evolution·Stefan Caddy-RetalicAndrew J Lowe
Dec 28, 2019·American Journal of Botany·Anna M O'BrienMegan E Frederickson
Mar 11, 2020·Journal of Theoretical Biology·Alejandra MelfoLuis D Llambí

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