Oecologia

, Volume 171, Issue 4, pp 981–992

Tradeoffs, competition, and coexistence in eastern deciduous forest ant communities

  • Katharine L. Stuble
  • Mariano A. Rodriguez-Cabal
  • Gail L. McCormick
  • Ivan Jurić
  • Robert R. Dunn
  • Nathan J. Sanders
Community ecology - Original research

DOI: 10.1007/s00442-012-2459-9

Cite this article as:
Stuble, K.L., Rodriguez-Cabal, M.A., McCormick, G.L. et al. Oecologia (2013) 171: 981. doi:10.1007/s00442-012-2459-9

Abstract

Ecologists have long sought to explain the coexistence of multiple potentially competing species in local assemblages. This is especially challenging in species-rich assemblages in which interspecific competition is intense, as it often is in ant assemblages. As a result, a suite of mechanisms has been proposed to explain coexistence among potentially competing ant species: the dominance–discovery tradeoff, the dominance–thermal tolerance tradeoff, spatial segregation, temperature-based niche partitioning, and temporal niche partitioning. Through a series of observations and experiments, we examined a deciduous forest ant assemblage in eastern North America for the signature of each of these coexistence mechanisms. We failed to detect evidence for any of the commonly suggested mechanisms of coexistence, with one notable exception: ant species appear to temporally partition foraging times such that behaviourally dominant species foraged more intensely at night, while foraging by subdominant species peaked during the day. Our work, though focused on a single assemblage, indicates that many of the commonly cited mechanisms of coexistence may not be general to all ant assemblages. However, temporal segregation may play a role in promoting coexistence among ant species in at least some ecosystems, as it does in many other organisms.

Keywords

Diurnal Niche Nocturnal Segregation Woodland 

Supplementary material

442_2012_2459_MOESM1_ESM.doc (341 kb)
Supplementary material 1 (DOC 341 kb)

Copyright information

© Springer-Verlag 2012

Authors and Affiliations

  • Katharine L. Stuble
    • 1
  • Mariano A. Rodriguez-Cabal
    • 1
  • Gail L. McCormick
    • 2
  • Ivan Jurić
    • 1
  • Robert R. Dunn
    • 3
  • Nathan J. Sanders
    • 1
    • 4
  1. 1.Department of Ecology and Evolutionary BiologyUniversity of TennesseeKnoxvilleUSA
  2. 2.Department of BiologyThe Pennsylvania State UniversityUniversity ParkUSA
  3. 3.Department of BiologyNorth Carolina State UniversityRaleighUSA
  4. 4.Center for Macroecology, Evolution and Climate, Department of BiologyUniversity of CopenhagenCopenhagenDenmark