Seasonal Periods of Surface Inactivity of the Pocket Gopher

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Abstract
An ecological study of the pocket gopher (Thomomys talpoides tenellus Goldman) made during the summer of 1952 in the Jackson Hole region of Wyoming revealed two periods of apparent inactivity of the gophers. One of the periods when no soil was brought to the surface of the ground was noted on the main floor of Jackson Hole (elevation 6,750 feet). This period was three to four weeks in duration, from the second week in August until shortly after the first week in September. Two plots had been previously laid out to measure the amount of soil brought to the surface by the gophers. Observations disclosed that only a very small amount of soil was brought to the surface of these plots during this period compared to the amount of soil in any similar period earlier in the summer. No soil at all was brought...

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