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  • Help requested

    Dear BIOMCH-L SUBSCRIBER:
    I am requesting help, or suggestions on how to solve the following problem:
    I conducted a research project on polar bears to examine whether the
    presence and absence of tundra vehicles elicits different vigilance
    behaviour in polar bears. As it turns out, bears have a higher rate of
    vigilance when vehicles are around a bear. To bring this fact to a level
    that management agencies can understand, I would like to calculate the
    energy expended during these head-ups. As I understand, the weight of the
    head, the distance moved from groundlevel to highest point moved, etc. are
    needed for calculations. Other colleagues told me that there is also the
    difficulty due to flexible tendons moving levers. I am just trying to get an
    estimation, as simple as possible but within realistic values. If any of you
    could help me with some ideas on how to calculate energy expenditures for
    these head-movements, I would be very thankful.
    Thank you all for your time.
    Regards,

    Markus

    Markus G. Dyck
    Natural Resources Institute
    303 Sinnott Building
    University of Manitoba
    Winnipeg, MB
    R3T 2N2
    Phone: [B](204) 474-6395
    Fax: [B](204) 261-0038
    Phone: [H](204) 255-8714
    Email: Markus_Dyck@hotmail.com

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