Abstract
Estimates of twig weight from twig diameter of 10 plant species browsed by moose (Alcesalces L.), elk (Cervuselaphus L.), and white-tailed deer (Odocoileusvirginianus Zimmerman) were obtained from one site along the edge of the Duck Mountain Forest Reserve, Manitoba. Seasonal variation in the twig weight–diameter relationships was great, as shown by differences in the correlation coefficient for the seasons. The highest correlations occurred in midwinter. Collection of twigs during their dormancy in winter or during their period of growth cessation in late summer produced the highest correlations between twig weight and twig diameter. In addition, red osier dogwood (Cornusstolonifera Michx.) was collected at three other sites and revealed that between-site differences in twig weight predicted from mean diameter were less than 20% for all test sites.
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