Plants use macronutrients accumulated in leaf-cutting ant nests

Leonel Da S.L. Sternberg, Maria Camila Pinzon, Marcelo Z. Moreira, Paulo Moutinho, Enith I. Rojas, Edward Allen Herre

Research output: Contribution to journalArticlepeer-review

67 Scopus citations


Leaf-cutting ants (Atta spp.) are known for their extensive defoliation in neo-tropical forests and savannahs. Debate about the costs and benefits of their activities has been largely dominated by their detrimental effects on agriculture and agroforestry. However, the large accumulation of nutrients and changes in soil properties near their nests might benefit plants growing near them. Here, we test whether trees use nutrients that accumulate in debris piles near, or refuse chambers within, leaf-cutting ant nests. At two tropical sites (a moist tropical forest site in Panama and a savannah site in Brazil), we fed leaves labelled with the stable isotope 15N to two species of leaf-cutting ants (Atta colombica and Atta laevigata) and traced the stable isotope label in plants surrounding the two nests. Thus, we show that plants in both sites access resources associated with Atta nests. In addition, leaf tissue of trees near the nests labelled with 15N had significantly higher calcium concentrations than those of distal, unlabelled conspecifics. It has been documented that calcium is a limiting macronutrient in tropical forests and savannahs. Atta may thus play an important ecological role through their long-distance transport, redistribution and concentration of critical macronutrients.

Original languageEnglish (US)
Pages (from-to)315-321
Number of pages7
JournalProceedings of the Royal Society B: Biological Sciences
Issue number1608
StatePublished - Feb 7 2007
Externally publishedYes


  • Atta
  • Leaf-cutting ants
  • Nitrogen isotopes
  • Nutrients
  • Savannahs
  • Tropical forests

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Immunology and Microbiology(all)
  • Environmental Science(all)
  • Agricultural and Biological Sciences(all)


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