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    Geographic Variation in the Pocket Gopher, Thomys bottae, in Colorado
    Geographic Variation in the Pocket Gopher, Thomys bottae, in Colorado
    Geographic Variation in the Pocket Gopher, Thomys bottae, in Colorado
    Ebook63 pages32 minutes

    Geographic Variation in the Pocket Gopher, Thomys bottae, in Colorado

    By Phillip M. Youngman

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    LanguageEnglish
    PublisherArchive Classics
    Release dateNov 27, 2013
    Geographic Variation in the Pocket Gopher, Thomys bottae, in Colorado

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      Book preview

      Geographic Variation in the Pocket Gopher, Thomys bottae, in Colorado - Phillip M. Youngman

      The Project Gutenberg EBook of Geographic Variation in the Pocket Gopher,

      Thomys bottae, in Colorado, by Phillip M. Youngman

      This eBook is for the use of anyone anywhere at no cost and with

      almost no restrictions whatsoever. You may copy it, give it away or

      re-use it under the terms of the Project Gutenberg License included

      with this eBook or online at www.gutenberg.net

      Title: Geographic Variation in the Pocket Gopher, Thomys bottae, in Colorado

      Author: Phillip M. Youngman

      Release Date: September 5, 2011 [EBook #37317]

      Language: English

      *** START OF THIS PROJECT GUTENBERG EBOOK GEOGRAPHIC VARIATION--POCKET GOPHER ***

      Produced by Chris Curnow, Joseph Cooper, Erica

      Pfister-Altschul and the Online Distributed Proofreading

      Team at http://www.pgdp.net

      University of Kansas Publications

      Museum of Natural History

      Volume 9, No. 12, pp 363-384, 7 figs, in text, 1 table

      February 21, 1958

      Geographic Variation

      in the Pocket Gopher, Thomomys bottae,

      in Colorado

      BY

      PHILLIP M. YOUNGMAN

      University of Kansas

      Lawrence

      1958

      University of Kansas Publications, Museum of Natural History

      Editors: E. Raymond Hall, Chairman, Henry S. Fitch,

      Robert W. Wilson

      Volume 9, No. 12, pp. 363-384, 7 figs. in text, 1 table

      Published February 21, 1958

      University of Kansas

      Lawrence, Kansas

      PRINTED IN

      THE STATE PRINTING PLANT

      TOPEKA, KANSAS

      1958

      27-1765

      Geographic Variation in the Pocket Gopher, Thomomys bottae, in Colorado

      BY

      PHILLIP M. YOUNGMAN

      INTRODUCTION

      Two species of pocket gophers of the genus Thomomys (Family Geomyidae) occur in Colorado, Thomomys bottae (see fig. 1) in the low valleys in the south-central and southwestern parts of the state and Thomomys talpoides mainly in the mountains and high valleys.

      Thomomys bottae occurs primarily in the Piñon-juniper, Ponderosa Pine, and Short Grass zones of Daubenmire (1943) but in some localities is found in the Douglas Fir Zone. Thomomys talpoides occupies primarily the Douglas Fir Zone and Engelmann Spruce-Subalpine Spruce Zone but is found also in the Piñon-juniper and Short Grass zones in some localities.

      The ranges of the two species do not overlap in the strict sense but interdigitate in a parapatric type of distribution.

      Two other pocket gophers, Geomys bursarius and Cratogeomys castanops, also occur in Colorado—in the Upper Sonoran Life-Zone. Geomys bursarius occupies much of the Great Plains, whereas Cratogeomys castanops is found only on the plains in the southeastern part of the state.

      The objectives of the study, reported on here, were to learn the geographic distribution of Thomomys bottae in Colorado, to find means for recognizing the different subspecies, and to describe individual and geographic variation.

      I am indebted to Mr. Sydney Anderson and Professor E. Raymond Hall for many helpful suggestions and for their critical reading of the manuscript, to Dr. Richard S. Miller, who made the collection of many of the specimens possible, and to

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