KUKU

KU ScholarWorks

  • myKU
  • Email
  • Enroll & Pay
  • KU Directory
    • Login
    View Item 
    •   KU ScholarWorks
    • Ecology & Evolutionary Biology
    • Ecology & Evolutionary Biology Scholarly Works
    • View Item
    •   KU ScholarWorks
    • Ecology & Evolutionary Biology
    • Ecology & Evolutionary Biology Scholarly Works
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    A 32-year demography of yellow-bellied marmots (Marmota flaviventris)

    Thumbnail
    View/Open
    j.1469-7998.1998.tb00163.44.pdf (109.9Kb)
    Issue Date
    1998-11
    Author
    Armitage, Kenneth B.
    Van Vuren, Dirk H.
    Schwartz, Orlando A.
    Publisher
    CAMBRIDGE UNIV PRESS
    Type
    Article
    Metadata
    Show full item record
    Abstract
    Yellow-bellied marmots Marmota flaviventris in the East River Valley of Colorado were live-trapped and individually marked annually from 1962 through 1993. These pooled data were used to produce a demography and life table for these years. Females had significantly better survivorship than males beyond the first-year age class, and the sex ratio became progressively female biased. The major mortality factors of predation and unsuccessful hibernation acted evenly on all age classes as shown by the constant rates of survivorship. The rate of senescence indicated that the probability of mortality did not increase with age. Females produced litters from ages 2 to 10 years. Mean litter size was 4.1 and did not differ among age classes. The female generation length of 4.49 years was 2.4 times the life expectancy and the median survivorship. The net reproductive rate (R-o) was 0.67, yet the population did not continually decline; adjustments to these data increased R-o to 0.85. Reproductive values (V-x) were approximately equal across the reproductive age classes. The polygynous mating system is both cause and effect of the demography. Marmot population size is affected by weather factors that influence reproduction and survival, by predation, and by movement into and out of the study area.
    URI
    http://hdl.handle.net/1808/1728
    Collections
    • Ecology & Evolutionary Biology Scholarly Works [1497]
    • Distinguished Professors Scholarly Works [918]
    Citation
    Schwartz, O A; Armitage, KB; Van Vuren, D. A 32-year demography of yellow-bellied marmots (Marmota flaviventris). JOURNAL OF ZOOLOGY. NOV 1998. 246(Part 3): 337-346.

    Items in KU ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.


    We want to hear from you! Please share your stories about how Open Access to this item benefits YOU.


    Contact KU ScholarWorks
    785-864-8983
    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    785-864-8983

    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    Image Credits
     

     

    Browse

    All of KU ScholarWorksCommunities & CollectionsThis Collection

    My Account

    LoginRegister

    Statistics

    View Usage Statistics

    Contact KU ScholarWorks
    785-864-8983
    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    785-864-8983

    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    Image Credits
     

     

    The University of Kansas
      Contact KU ScholarWorks
    Lawrence, KS | Maps
     
    • Academics
    • Admission
    • Alumni
    • Athletics
    • Campuses
    • Giving
    • Jobs

    The University of Kansas prohibits discrimination on the basis of race, color, ethnicity, religion, sex, national origin, age, ancestry, disability, status as a veteran, sexual orientation, marital status, parental status, gender identity, gender expression and genetic information in the University’s programs and activities. The following person has been designated to handle inquiries regarding the non-discrimination policies: Director of the Office of Institutional Opportunity and Access, IOA@ku.edu, 1246 W. Campus Road, Room 153A, Lawrence, KS, 66045, (785)864-6414, 711 TTY.

     Contact KU
    Lawrence, KS | Maps