Advantages and disadvantages of interference-competitive ability and resource-use efficiency when invading established communities

Hart, Simon P. and Marshall, Dustin J. (2012) Advantages and disadvantages of interference-competitive ability and resource-use efficiency when invading established communities. Oikos, 121 3: 396-402.


Author Hart, Simon P.
Marshall, Dustin J.
Title Advantages and disadvantages of interference-competitive ability and resource-use efficiency when invading established communities
Journal name Oikos   Check publisher's open access policy
ISSN 0030-1299
1600-0706
Publication date 2012-03
Year available 2011
Sub-type Article (original research)
DOI 10.1111/j.1600-0706.2011.19557.x
Volume 121
Issue 3
Start page 396
End page 402
Total pages 7
Place of publication Malden, MA, United States
Publisher Wiley-Blackwell Publishing
Collection year 2012
Language eng
Abstract Invaders into established communities must overcome low resource availability. To establish, invaders must either appropriate resources from existing individuals through interference competition or efficiently use the small amount of resource that remains. Although both strategies may be important, they are rarely considered together and, in particular, resource-use efficiency is often ignored in systems dominated by interference competition. To identify the traits that confer invasion success, we experimentally invaded resource patches in established communities with multiple species from two functional groups that differ in interference competitive ability and resource-use efficiency. In contrast to previous assessments, we show that resource-use efficiency can facilitate invasion in systems dominated by interference competition. Furthermore, large resource requirements can be a liability when establishing because interference competition is inherently costly and so cannot fully compensate for limitations in the primary resource. However, we also show that there is a tradeoff in performance among functional groups between small and large resource gaps. Our results suggest we modify the way we view and manage species invasion in systems dominated by interference competition.
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Article first published online: 29 DEC 2011

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2012 Collection
School of Biological Sciences Publications
 
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Created: Fri, 23 Mar 2012, 17:49:40 EST by Gail Walter on behalf of School of Biological Sciences