Estimation of snowshoe hare population density from turd transects
نویسندگان
چکیده
منابع مشابه
Snowshoe Hare Optimal Foraging and Its Implications for Population Dynamics
The results of an optimal foraging model using linear programming with constraints for feeding time, digestive capacity, sodium requirements, and energy requirements indicate that snowshoe hare (Lepus americanus) may forage as energy maximizers. The solution provides the quantities of major food classes (leaves, herbs, fungus, twigs) included in the diet. The species composition of each diet cl...
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The snowshoe hare and the Canadian lynx in the boreal forests of North America show 9- to 11-year density cycles. These are generally assumed to be linked to each other because lynx are specialist predators on hares. Based on time series data for hare and lynx, we show that the dominant dimensional structure of the hare series appears to be three whereas that of the lynx is two. The three-dimen...
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This is an especially interesting article that tries to identify how many variables are defining the oscillatory variation in the hare population. A logical assumption is that hare population, predator population and hare food (e.g. grass) amount are related, but which relation is responsible for the oscillation (periodicity) in the hare population. In order to determine this, the authors perfo...
متن کاملA time-lagged effect of conspecific density on habitat selection by snowshoe hare
Ideal free distribution theory predicts that increased conspecific density redistributes individuals to low-density, suboptimal habitat. However, possible lags in response to population density remain poorly documented. Snowshoe hares (Lepus americanus) may exhibit density-dependent habitat selection due to its marked variation in population density. Based on 11 years (2004-2014) of snow tracki...
متن کاملSeasonal Augmentation of Myoglobin in the Snowshoe Hare.
Its prominence has long made myoglobin a substance of general interest. Distributional surveys have provided useful and suggestive correlations with repetitive types of muscle, notably cardiac, but a direct demonstration of the function of myoglobin has not been made except in the special case of oxygen storage in diving mammals. The concentration of myoglobin in muscle has been reported as inc...
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ژورنال
عنوان ژورنال: Canadian Journal of Zoology
سال: 1987
ISSN: 0008-4301,1480-3283
DOI: 10.1139/z87-087