Competition Between Seed-Eating Rodents and Ants in Desert Ecosystems

See allHide authors and affiliations

Science  20 May 1977:
Vol. 196, Issue 4292, pp. 880-882
DOI: 10.1126/science.196.4292.880


Three kinds of evidence indicate that desert rodents and ants compete for seeds: (i) extensive overlaps in diet, (ii) reciprocal increases when one taxon is experimentally excluded, and (iii) complementay patterns of diversity and biomass in georadients of productivity. The effect on seed resources and annual plan geoseems to be similar whether rodents, ants, or both are foraging.