...There was a stern will, an iron-like reality, about this Gore, which would have easily made him the chief of a band of pirates, had his environments been favorable to such a course of life... 
Frederick Douglass 「My Bondage and My Freedom」
...This is evidence of meaningful adaptation of the NorthAmerican populations to environments in which they now live, andcontinued use of P...
Richard F. Johnston 「The Breeding Birds of Kansas」
...The house mouse evidently is uncommon in rural environments innorthwestern South Dakota...
Kenneth W. Andersen 「Mammals of Northwestern South Dakota」
...This seems to supportDurrant's observation (1952:496) that "the greatest range ofmorphological variation is in animals from the least stable environments...
Phillip M. Youngman 「Geographic Variation in the Pocket Gopher, Thomys bottae, in Colorado」
...Thesefactors will be compared in the three major environments in the region...
William E. Duellman 「A Distributional Study of the Amphibians of the Isthmus of Tehuantepec, Mexico」
...Furthermore, the soils in these environments become dry and caked...
William E. Duellman 「A Distributional Study of the Amphibians of the Isthmus of Tehuantepec, Mexico」
...However, therestill is a diversity of amphibians in these semi-arid environments...
William E. Duellman 「A Distributional Study of the Amphibians of the Isthmus of Tehuantepec, Mexico」
...This isespecially noticeable in the semi-arid environments, where during thedry season there is little activity...
William E. Duellman 「A Distributional Study of the Amphibians of the Isthmus of Tehuantepec, Mexico」
...Of these, Microbatrachylus pygmaeus also occurs inscattered humid environments to the west of the isthmus on the Pacificlowlands...
William E. Duellman 「A Distributional Study of the Amphibians of the Isthmus of Tehuantepec, Mexico」
...Much of the evidence of such drasticvertical shifts in environments is based on the presence ofPleistocene montane glaciers on Mexican volcanoes (White, 1956) andChirripo in Costa Rica (Weyl, 1955)...
William E. Duellman 「A Distributional Study of the Amphibians of the Isthmus of Tehuantepec, Mexico」
...No such studies have been made in lowlandtropical environments...
William E. Duellman 「A Distributional Study of the Amphibians of the Isthmus of Tehuantepec, Mexico」
...Probably, too,the semi-arid environments were restricted, and the rainforests weremore widespread...
William E. Duellman 「A Distributional Study of the Amphibians of the Isthmus of Tehuantepec, Mexico」
...Plectrohyla lives in mountain streams in theChiapan-Guatemalan highlands; the Hyla robertsorum-pachyderma-crassacomplex inhabits similar environments in the Sierra Madre Oriental inMéxico...
William E. Duellman 「A Review of the Frogs of the Hyla bistincta Group」
...In Michoacán, as in other parts of its range, Loxocemus bicolorinhabits arid scrub forest environments at low elevations...
William E. Duellman 「The Amphibians and Reptiles of Michoacán, México」
...Some of these differences result fromthe differing environments where Anderson's study and my ownwere made and others certainly result from innate genetic differencesbetween the species...
Henry S. Fitch 「Field Study of Kansas Ant-Eating Frog」
...Thisis in contrast to the other species, all of which characteristically inhabitdrier environments than does H...
William E. Duellman 「Middle American Frogs of the Hyla microcephala Group」
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