Diel activity patterns of river otters (Lontra canadensis) in southeastern Minnesota

摘要: Abstract An understanding of activity patterns wildlife in relation to abiotic and biotic factors enables biologists better understand the ecology species, manage resources, standardize survey methods, serve as an index relative density a species. River otters (Lontra canadensis) were radiotracked between June 2002 October 2003. Using radiotracking data, we conducted exploratory analyses determine influence on 2 measures otters. Abiotic included air temperature, barometric pressure, lunar phase, biological season, time day; factor was sex. Activity measured indirectly via movement rates directly proportion location attempts recorded active (PLA). Movement rate defined distance traveled by otter consecutive estimates. Generalized linear mixed models used explore covariates both activity. The model best...