Three energy variables predict ant abundance at a geographical scale.

@article{Kaspari2000ThreeEV,
  title={Three energy variables predict ant abundance at a geographical scale.},
  author={Michael Kaspari and Leeanne E. Alonso and Sean O'Donnell},
  journal={Proceedings. Biological sciences},
  year={2000},
  volume={267 1442},
  pages={
          485-9
        }
}
Energy theory posits three processes that link local abundance of ectotherms to geographical gradients in temperature. A survey of 49 New World habitats found a two order of magnitude span in the abundance (nests m(-2)) of ground nesting ants (Formicidae). Abundance increased with net primary productivity (r2=0.55), a measure of the baseline supply of harvestable energy. Abundance further increased with mean temperature (r2=0.056), a constraint on foraging activity for this thermophilic taxon… CONTINUE READING
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