Spatial variation and density-dependent dispersal in competitive coexistence.

@article{Amarasekare2004SpatialVA,
  title={Spatial variation and density-dependent dispersal in competitive coexistence.},
  author={Priyanga Amarasekare},
  journal={Proceedings. Biological sciences},
  year={2004},
  volume={271 1547},
  pages={1497-506}
}
It is well known that dispersal from localities favourable to a species' growth and reproduction (sources) can prevent competitive exclusion in unfavourable localities (sinks). What is perhaps less well known is that too much emigration can undermine the viability of sources and cause regional competitive exclusion. Here, I investigate two biological mechanisms that reduce the cost of dispersal to source communities. The first involves increasing the spatial variation in the strength of… CONTINUE READING