Walters, C., M.E. Douglas, W.R. Persons, and R.L. Valdez (2006). Assessment of growth and apparent population trends in Grand Canyon native fishes from mark-recapture data. In: Fishes in Databases and Ecosystems (M.L.D. Palomares, K.I. Stergiou, and D. Pauly, eds.). Fisheries Centre Research Report 14:78—89.

Olden, J.D., M. E. Douglas, and M.R. Douglas (2005). The human dimensions of biotic homogenization. Conservation Biology 19:2036—2038.

Olden, J. D., N. L. Poff, M. R Douglas, M. E. Douglas, and K. D. Fausch (2004). Ecological and evolutionary consequences of biotic homogenization: beyond a simple focus on species diversity loss. Trends in Ecology and Evolution 19(1):18—24.

Reed, R. N., and M. E. Douglas (2002). Ecology of the Grand Canyon Rattlesnake (Crotalus viridis abyssus) in the Little Colorado River of Grand Canyon (AZ). Southwestern Naturalist 47:30—39.

Holycross, A. T., C. W. Painter, D. G. Barker, and M. E. Douglas (2002). Foraging ecology of a threatened rattlesnake, Crotalus willardi obscurus, pp.243—252. In: Biology of the Vipers (G. W. Schuett, M. Hoggren, M. E. Douglas, and H. W. Greene, eds). Eagle Mountain Press LC, Salt Lake City UT.

Douglas, M. R., M. E. Douglas, and P. C. Brunner (2001). Population estimates, movements, and size structure of the endangered Quitobaquito desert pupfish Cyprinodon macularius eremus. Southwestern Naturalist 46:141—150.

Smith, L. J., A. T. Holycross, C. W. Painter, and M. E. Douglas (2001). Montane rattlesnakes and prescribed fire. Southwestern Naturalist 46:54—61.

Douglas, M. R., and M. E. Douglas(2000). Late season reproduction by big-river Catostomidae in Grand Canyon (Arizona). Copeia 2000:238-244.

Douglas, M. E., and P. C. Marsh (1998). Population and survival estimates for Catostomus latipinnis in northern Grand Canyon, with distribution and abundance of hybrids with Xyrauchen texanus. Copeia 1998:915—925.

McElroy, D. M., J. A. Shoemaker, and M. E. Douglas (1997). Risk Assessment and the endangered species act: Discrimination of Gila robusta and Gila cypha. Ecological Applications 7(3):958—967.

Marsh, P. C., and M. E. Douglas (1997). Predation on endangered humpback chub (Gila cypha) by introduced fishes in the Little Colorado River, Arizona. Transactions of the American Fisheries Society 126:343—346.

Douglas, M. E., and P. C. Marsh (1996). Population estimates/ population movements of Gila cypha, an endangered cyprinid fish in the Grand Canyon region of Arizona. Copeia 1996:15—28.

Douglas, M. E., P. C. Marsh, and W. L. Minckley (1994). Indigenous fishes of western North America and the hypothesis of competitive displacement: Meda fulgida (Teleostei, Cyprinidae) as a case study. Copeia 1994:9—19.

Marsh, P. C., M. E. Douglas, W. L. Minckley, and R. Timmons (1991). Re-Discovery of Colorado Squawfish Ptychocheilus lucius (Cyprinidae), in Wyoming. Copeia 1991:1091—1092.

Minckley, W. L, and M. E. Douglas (1991). Discovery and extinction of Western fishes: A blink of the eye in geologic time, pp. 7--17. In: Battle Against Extinction: Native Fish Management in the American West (W. L. Minckley and J. E. Deacon, eds.). University of Arizona Press, Tucson.

Schnell, G. D., D. J. Watt, and M. E. Douglas (1984). Statistical comparison of proximity matrices: applications in animal behaviour. Animal Behavior 33:239—253.

Douglas, M. E. and J. A. Endler (1983). Quantitative matrix comparisons in ecological and evolutionary investigations. Journal of Theoretical Biology 99:777—795.

Douglas, M. E. and B. L. Monroe, Jr. (1981). A comparative analysis of topographical orientation in three species of ambystsomatid salamander. Copeia 1981:681—683.

Douglas, M. E. (1979). Migration and sexual selection in Ambystoma jeffersonianum (Amphibia: Caudata). Canadian Journal of Zoology 57:2303—2309.