, Volume 173, Issue 3, pp 1053–1062

Co-occurrence patterns of Bornean vertebrates suggest competitive exclusion is strongest among distantly related species

  • Lydia Beaudrot
  • Matthew J. Struebig
  • Erik Meijaard
  • S. van Balen
  • Simon Husson
  • Andrew J. Marshall
Community ecology - Original research

DOI: 10.1007/s00442-013-2679-7

Cite this article as:
Beaudrot, L., Struebig, M.J., Meijaard, E. et al. Oecologia (2013) 173: 1053. doi:10.1007/s00442-013-2679-7


Assessing the importance of deterministic processes in structuring ecological communities is a central focus of community ecology. Typically, community ecologists study a single taxonomic group, which precludes detection of potentially important biotic interactions between distantly related species, and inherently assumes competition is strongest between closely related species. We examined distribution patterns of vertebrate species across the island of Borneo in Southeast Asia to assess the extent to which inter-specific competition may have shaped ecological communities on the island and whether the intensity of inter-specific competition in present-day communities varies as a function of evolutionary relatedness. We investigated the relative extent of competition within and between species of primates, birds, bats and squirrels using species presence–absence and attribute data compiled for 21 forested sites across Borneo. We calculated for each species pair the checkerboard unit value (CU), a statistic that is often interpreted as indicating the importance of interspecific competition. The percentage of species pairs with significant CUs was lowest in within-taxon comparisons. Moreover, for invertebrate-eating species the percentage of significantly checkerboarded species pairs was highest in comparisons between primates and other taxa, particularly birds and squirrels. Our results are consistent with the interpretation that competitive interactions between distantly related species may have shaped the distribution of species and thus the composition of Bornean vertebrate communities. This research highlights the importance of taking into account the broad mammalian and avian communities in which species occur for understanding the factors that structure biodiversity.


Community assembly Niche differentiation Interspecific competition Southeast Asia Checkerboard 

Supplementary material

442_2013_2679_MOESM1_ESM.pdf (63 kb)
Appendix S1. References for site and species data (PDF 64 kb)
442_2013_2679_MOESM2_ESM.xlsx (64 kb)
Appendix S2. List of species included in the study. Values indicate whether a species was included (1) or not (0) for analyses of invertebrate- or fruit-eating species at all sites or sites with similar habitat types and for medium bodied species. (XLSX 64 kb)
442_2013_2679_MOESM3_ESM.r (4 kb)
Appendix S3. R code for species-pair analysis. (R 3 kb)

Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • Lydia Beaudrot
    • 1
    • 2
  • Matthew J. Struebig
    • 3
    • 4
  • Erik Meijaard
    • 5
    • 6
  • S. van Balen
    • 7
  • Simon Husson
    • 8
  • Andrew J. Marshall
    • 1
    • 2
    • 9
  1. 1.Graduate Group in EcologyUniversity of CaliforniaDavisUSA
  2. 2.Department of AnthropologyUniversity of CaliforniaDavisUSA
  3. 3.Durrell Institute of Conservation and Ecology (DICE), School of Anthropology and ConservationUniversity of KentCanterburyUK
  4. 4.School of Biological and Chemical SciencesQueen Mary, University of LondonLondonUK
  5. 5.People and Nature Consulting InternationalJakartaIndonesia
  6. 6.School of Archaeology and AnthropologyAustralian National UniversityCanberraAustralia
  7. 7.Basilornis ConsultsArnhemThe Netherlands
  8. 8.The Orangutan Tropical Peatland ProjectPalangkarayaIndonesia
  9. 9.Animal Behavior Graduate GroupUniversity of CaliforniaDavisUSA

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