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Matching of Granivorous Mammals of the Great Basin and Sonoran Deserts on a Species-for-Species Basis
Mark V. Lomolino
Journal of Mammalogy
Vol. 74, No. 4 (Nov., 1993), pp. 863-867
Published by: American Society of Mammalogists
Stable URL: http://www.jstor.org/stable/1382424
Page Count: 5
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Guilds of granivorous rodents from the Great Basin and Sonoran deserts appear similar in species number, overdispersion of body sizes and matching of body sizes on a species-for-species basis. Monte Carlo simulations, however, revealed that these guilds are not matched on a species-for-species basis. The apparent matching of species between these guilds is an artifact of selection for small size in granivorous, desert mammals. Overdispersion of body sizes within guilds did not increase matching between them. In general, purported cases of matching at the species level may, under closer scrutiny, prove to be artifacts of community convergence at coarser levels.
Journal of Mammalogy © 1993 American Society of Mammalogists