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https://doi.org/10.2307/3673604
Copy DOIJournal: Mountain Research and Development | Publication Date: Aug 1, 1990 |
Citations: 48 |
Space-use patterns and rhythms of daily activity of cattle and sheep summering in the Western Pyrenees are described and the ecological factors that affect them are discussed. Differences among ruminants in relation to fiber tolerance and protein needs determine the preferred grazing areas. These and other morpho-physiological features (such as body size) lead to spatial stratification of animals along mountain slopes. Cattle need a high volume of forage intake so they graze on the lower ranges where availability is greatest and they avoid steep slopes and rocky outcrops. The pattern of space use by cattle throughout the summer season follows a concentration-expan- sion-concentration sequence determined by forage abundance and availability. The distribution of grazing cattle is affected by plant cover and the resting distribution by flatness and proximity to water. The grazing distribution of sheep is determined by shepherd strategy to allow the flock to benefit continually from optimum grass production. Bimodal distribution of daily grazing behavior occurs in both cattle and sheep activity. Two peaks of maximum grazing occur, in early morning and at evening, but that trend may vary according to environmental conditions, especially temperature.
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