The effect of species of animals which share common resources on one another's distribution and abundance.
D000663:Amphibians; D000818:Animals; D001717:Birds; D004463:Ecology; D004777:Environment; D005399:Fishes; D006376:Helminths; D007313:Insecta; D007448:Invertebrates; D008322:Mammals; D008386:Marine Biology; D011156:Population Density; D011157:Population Dynamics; D012098:Reproduction; D013045:Species Specificity