Patch dynamics, persistence, and species coexistence in metaecosystems

The American Naturalist
Dominique GravelFrédéric Guichard

Abstract

We add an ecosystem perspective to spatially structured communities subject to colonization-extinction dynamics. We derive a plant-based metaecosystem model to analyze how the spatial flows of the biotic and abiotic forms of a limiting nutrient affect persistence and coexistence. We show that the proportion of patches supporting plants in a region has a considerable impact on local nutrient dynamics. Then we explicitly couple nutrient dynamics to patch dynamics. Our model shows strong feedback between local and regional dynamics mediated by nutrient flows. We find that nutrient flows can have either positive or negative effects on species persistence and coexistence. The essential feature of this local-regional coupling is the net direction of the nutrient flows between occupied and empty patches. A net flow of nutrients from occupied to empty patches leads to indirect facilitative interactions, such as an inferior competitor promoting the persistence of a superior competitor. We show that nutrient flows affect the potential diversity of the metaecosystem and key features of plant community dynamics, such as the shape of the competition-colonization trade-off and successional sequences. Our analysis revealed that integrating ec...Continue Reading

Citations

Dec 19, 2012·Oecologia·Christopher J Patrick, Dylan H Fernandez
Mar 12, 2013·Theoretical Population Biology·Sebastian J Schreiber, Timothy P Killingback
Jan 10, 2014·Proceedings. Biological Sciences·Justin N MarleauMichel Loreau
Dec 2, 2014·The American Naturalist·Isabelle GounandDominique Gravel
Jun 7, 2011·Trends in Ecology & Evolution·Jürg B LogueUNKNOWN Metacommunity Working Group
Dec 4, 2012·Biological Reviews of the Cambridge Philosophical Society·Michel LoreauNicolas Mouquet
May 25, 2013·Ecology Letters·Wilfried ThuillerDominique Gravel
Jul 2, 2014·Mathematical Biosciences·Frederic Guichard, Tarik C Gouhier
Sep 16, 2016·Proceedings. Biological Sciences·Eric HarveyFlorian Altermatt
Jan 24, 2017·Ecology·Romana LimbergerBlake Matthews
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Oct 16, 2012·Ecology Letters·Nicolas MouquetVincent Calcagno
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