Richard Callas

Using automated recorders and occupancy models to monitor common forest birds across a large geographic region

Brett J. Furnas, Richard Callas · Journal of Wildlife Management · 2014 · 132 citations

Life Sciences, Ecology, Zoology +17

Forty-eight year decline and fragmentation of aspen (Populus tremuloides) in the South Warner Mountains of California

Aaron P. Di Orio, Richard Callas, Robert Schaefer · Forest Ecology and Management · 2004 · 67 citations

Natural Resources, Ecology, Landscape Ecology +16

Timing of translocation influences birth rate and population dynamics in a forest carnivore

Aaron N. Facka, Jeffrey C. Lewis, Patricia J. Happe et al. · Ecosphere · 2016 · 41 citations · Full text

Life Sciences, Ecology, Fisheries +15

Re-defining historical geographic range in species with sparse records: Implications for the Mexican wolf reintroduction program

Sarah A. Hendricks, Paul R. Sesink Clee, Ryan J. Harrigan et al. · Biological Conservation · 2015 · 36 citations

Life Sciences, Conservation Biology, Ecology +16

Dynamic occupancy modelling reveals a hierarchy of competition among fishers, grey foxes and ringtails

David Green, Sean M. Matthews, Robert C. Swiers et al. · Journal of Animal Ecology · 2017 · 35 citations · Full text

Life Sciences, Biology, Ecology +17