Dynamics of an enclosed population of pine mice, Microtus pinetorum

Summary Enclosed populations of pine mice were studied over a 28‐month period and compared with populations in surrounding natural areas. The enclosed populations reached densities far greater than any observed in surrounding natural areas. It is suggested that the restriction placed on dispersal by the enclosure walls and the addition of food in the form of trap bait could have allowed the enclosed populations to reach higher densities than normally observed at SRP.