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- Article] Mutualism between Consumers and Their Shared Resource Can Promote Competitive Coexistence
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DocNo of ILP: 2777
Doc. Type: Article
Title: Mutualism between Consumers and Their Shared Resource Can Promote Competitive Coexistence
Authors: Lee, CT; Inouye, BD
Full Name of Authors: Lee, Charlotte T.; Inouye, Brian D.
Keywords by Author: competition; mutualism; demographic structure; niche differentiation; lottery model; myrmecophytes
Keywords Plus: OBLIGATE PLANT-ANTS; YUCCA MOTHS; ACACIA-ANT; TRADE-OFF; EVOLUTION; COMMUNITIES; POPULATION; PARASITE; MYRMECOPHYTES; PERSISTENCE
Abstract: Competitive coexistence depends on dynamic interactions between competitor and resource populations, including mutualism between the resource and each competitor. We add mutualism to a well-known model of resource competition and show that it can powerfully stabilize competitive coexistence in the absence or presence of resource heterogeneity. We use a transition matrix approach to describe lottery competition, while allowing each of two competitors to affect the population dynamics of their shared resource. For example, two plant-defending ant species may compete for nesting space within ant-adapted (myrmecophytic) plants. We show that mutualism between consumers and a resource species can stabilize competitive coexistence of the consumers by allowing each competitor to influence resource dynamics in a way that benefits the other. The effect of this novel coexistence mechanism depends on a mutualism's biological details: for example, altering myrmecophyte fecundity affects competing ant species differently than does altering plant survival. Finally, we consider a heterogeneous resource (e.g., two types of nest site) and show how niche partitioning can stabilize coexistence in the absence of resource dynamics. When resource heterogeneity is dynamic (e.g., small and large plants of the same species), niche partitioning also provides new routes for additional stabilization via mutualism.
Cate of OECD: Biological sciences
Year of Publication: 2010
Business Area: other
Detail Business: medicine & science
Country: USA
Study Area:
Name of Journal: AMERICAN NATURALIST
Language: English
Country of Authors: [Lee, Charlotte T.; Inouye, Brian D.] Florida State Univ, Dept Biol Sci, Tallahassee, FL 32306 USA
Press Adress: Lee, CT (reprint author), Florida State Univ, Dept Biol Sci, B-157, Tallahassee, FL 32306 USA.
Email Address: ctlee@bio.fsu.edu
Citaion:
Funding: Society in Science: The Branco Weiss Fellowship; National Science Foundation [DEB-0452720, DEB-0453631]
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Number of Citaion: 63
Publication: UNIV CHICAGO PRESS
City of Publication: CHICAGO
Address of Publication: 1427 E 60TH ST, CHICAGO, IL 60637-2954 USA
ISSN: 0003-0147
29-Character Source Abbreviation: AM NAT
ISO Source Abbreviation: Am. Nat.
Volume: 175
Version: 3
Start of File: 277
End of File: 288
DOI: 10.1086/650370
Number of Pages: 12
Web of Science Category: Ecology; Evolutionary Biology
Subject Category: Environmental Sciences & Ecology; Evolutionary Biology
Document Delivery Number: 552JH
Unique Article Identifier: WOS:000274285400003
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