An unusual trophic subsidy and species dominance in a tropical stream.

@article{Lancaster2008AnUT,
  title={An unusual trophic subsidy and species dominance in a tropical stream.},
  author={Jill Lancaster and M. W. Dobson and Adiel E. M. Magana and Amanda J. Arnold and Jude Mutuku Mathooko},
  journal={Ecology},
  year={2008},
  volume={89 8},
  pages={2325-34}
}
In classical theory, species are assumed to achieve dominance through competitive exclusion, but if food resources are limiting, cross-habitat trophic subsidies could also underpin dominance. The impact of dominant species on community dynamics may depend on the energy base of population size. We report on an unusual, spatially subsidized population of a tropical, stream-dwelling crab that dominates the benthic fauna of a Kenyan stream. Diet and stable isotope analyses indicated that this crab… CONTINUE READING