Oecologia

, Volume 164, Issue 1, pp 201–211

Trees as templates for tropical litter arthropod diversity

  • David A. Donoso
  • Mary K. Johnston
  • Michael Kaspari
Community ecology - Original Paper

DOI: 10.1007/s00442-010-1607-3

Cite this article as:
Donoso, D.A., Johnston, M.K. & Kaspari, M. Oecologia (2010) 164: 201. doi:10.1007/s00442-010-1607-3

Abstract

Increased tree species diversity in the tropics is associated with even greater herbivore diversity, but few tests of tree effects on litter arthropod diversity exist. We studied whether tree species influence patchiness in diversity and abundance of three common soil arthropod taxa (ants, gamasid mites, and oribatid mites) in a Panama forest. The tree specialization hypothesis proposes that tree-driven habitat heterogeneity maintains litter arthropod diversity. We tested whether tree species differed in resource quality and quantity of their leaf litter and whether more heterogeneous litter supports more arthropod species. Alternatively, the abundance–extinction hypothesis states that arthropod diversity increases with arthropod abundance, which in turn tracks resource quantity (e.g., litter depth). We found little support for the hypothesis that tropical trees are templates for litter arthropod diversity. Ten tree species differed in litter depth, chemistry, and structural variability. However, the extent of specialization of invertebrates on particular tree taxa was low and the more heterogeneous litter between trees failed to support higher arthropod diversity. Furthermore, arthropod diversity did not track abundance or litter depth. The lack of association between tree species and litter arthropods suggests that factors other than tree species diversity may better explain the high arthropod diversity in tropical forests.

Keywords

Tree specialization hypothesis Abundance Leaf litter Arthropods 

Copyright information

© Springer-Verlag Berlin Heidelberg 2010

Authors and Affiliations

  • David A. Donoso
    • 1
    • 2
  • Mary K. Johnston
    • 1
    • 3
  • Michael Kaspari
    • 1
    • 4
  1. 1.Graduate Program in Ecology and Evolutionary Biology, Department of ZoologyThe University of OklahomaNormanUSA
  2. 2.Museo de Zoología QCAZ, Escuela de Ciencias BiológicasPontificia Universidad Católica del EcuadorQuitoEcuador
  3. 3.Section of Integrative BiologyThe University of Texas at AustinAustinUSA
  4. 4.Smithsonian Tropical Research InstituteBalboaRepublic of Panama

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