Bats captured in two ponderosa pine habitats in north-central Arizona

We used mist nets to capture bats in two ponderosa pine (Pinus ponderosa) h abitats in the Coconino National Forest, Arizona during June and July, 1993 to 1995. We captured 1,123 bats representing 12 species in ponderosa pine forest habitat and 561 bats representing 15 species in ponderosa pine-oak f orest habitat. Four species comprised 76% of all captures: Myotis volans (2 3.7%), Eptesicus fuscus (23.1%), M. evotis (16.0%), and M. occultus (13.4%) . Based on netting effort alone we captured more E. fuscus, Lasiurus cinere us, and M. evotis and fewer Antrozous pallidus, Lasionycteris noctivagans, and M. auriculus in the ponderosa pine habitat than in the pine-oak habitat . Pregnant and lactating bats from nine species accounted for 60% of all fe male captures. Because some of these species roost in pine forest, intensiv e forest management practices in ponderosa pine habitats during summer mont hs may negatively influence their reproductive success.