...An ecological survey of reptiles in parts of northwestern Texas... 
Henry S. Fitch 「Occurrence of the Garter Snake, Thamnophis sirtalis, in the Great Plains and Rocky Mountains」
...An ecological analysis of the interbreeding of Crested Titmice in Texas...
Emil K. Urban 「Birds from Coahuila, Mexico」
...The Wisconsin border along thewestern portion of the Upper Peninsula forms nodistinctive ecological boundary...
Thomas F. Weise 「An Experimental Translocation of the Eastern Timber Wolf」
...Inthese instances well marked ecological differences exist between thesubspecies involved...
James S. Findley 「Speciation of the Wandering Shrew」
...The ecological requirements of jumping mice, genus Zapus, andthe subspecies of Sorex vagrans that dwell in hydroseres are essentiallysimilar...
James S. Findley 「Speciation of the Wandering Shrew」
...Obviously, the diversity of ecological niches in the rainforest is sufficient to support a variety of related species...
William E. Duellman 「Amphibians and Reptiles of the Rainforests of Southern El Peten, Guatemala」
...No ecological differences between this species and K...
William E. Duellman 「Amphibians and Reptiles of the Rainforests of Southern El Peten, Guatemala」
...The most striking ecological assemblage ofamphibians in the rainforest is the arboreal group of species...
William E. Duellman 「A Distributional Study of the Amphibians of the Isthmus of Tehuantepec, Mexico」
...On theother hand, the savannas and scrub forests are characterized by extremeconditions of desiccation, a factor of considerable importance inlimiting the ecological distribution of amphibians...
William E. Duellman 「A Distributional Study of the Amphibians of the Isthmus of Tehuantepec, Mexico」
...The ecological relationships that exist between the two species in theCordillera Volcánica are not known...
William E. Duellman 「The Amphibians and Reptiles of Michoacán, México」
...The mean body temperature for active individuals ()is probably somewhat below the ecological optimum, because afew temperatures were abnormally low...
John M. Legler 「Natural History of the Ornate Box Turtle, Terrapene ornata ornata Agassiz」
...The present ecological study has demonstratedthat T...
John M. Legler 「Natural History of the Ornate Box Turtle, Terrapene ornata ornata Agassiz」
...As I have mentioned previously, ecological segregation andinterspecific competition probably is highly developed in the tadpolesof Ptychohyla...
William E. Duellman 「A Review of the Middle American Tree Frogs of the Genus Ptychohyla」
...Bragg (1943: 76) emphasized that in Oklahoma itis widely distributed over the state, occupying a variety of habitats,with little ecological restriction...
Henry S. Fitch 「Field Study of Kansas Ant-Eating Frog」
...An ecological study of the narrow-mouthed toad (Microhyla) in northeastern Kansas...
Henry S. Fitch 「Field Study of Kansas Ant-Eating Frog」
...At present, there is a paucity of ecological niches in theupland tributaries and large rivers, as compared with streams ofintermediate size...
Artie L. Metcalf 「Fishes of Chautauqua, Cowley and Elk Counties, Kansas」
...An ecological study of the collared lizard (Crotaphytus collaris)...
Artie L. Metcalf 「Fishes of Chautauqua, Cowley and Elk Counties, Kansas」
...This is presumably attributable to the ecological barrier presented by the Wakarusa mainstream...
James E. Deacon 「Fishes of the Wakarusa River in Kansas」
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