Camera Traps

Camera traps offer a unique glimpse into the world of mammals: data for scientists, and pictures for everyone.

Canid Creatures coverGameeMammal
I am a leader of the eMammal project, a data management system and archive for camera trap research projects, and our state-wide citizen science project: North Carolina Candid Critters.  This cyber-tool is designed to not only be useful to scientists, but also to anyone who wants to join in the fun and discovery of camera trapping as a citizen scientist.  Camera trappers use our software to look at pictures, identify animals and upload them to the digital repository for review and archive at the Smithsonian.  These data are then useful for addressing important scientific and conservation questions.  The pictures provide a unique view into the secret word of wildlife.

 

My research with camera traps started with film cameras used to survey the carnivores of the Adirondacks of NY.  We used these data to compare survey techniques and study the interactions between carnivore species, which we found to be relatively unimportant compared to habitat factors. By 2008 digital camera traps were practical and we used them to quantify the mammal community in Panama, and to discover that rodents steal buried seeds from each other (thereby dispersing them further), and return to monitor the seeds to  help them remember where they are.  We also used camera traps to discover that that prey hiding places were hotspots of predator activity.

 

I have worked on a number of methodological innovations including a way to measure the area surveyed by a camera trap, a way to estimate the total daily activity level from camera trap pictures, a new statistical technique to account for species interaction and spatial autocorrelation, and automating the identification of animals from camera trap images through computer vision.

Increasingly my work with camera traps has involved working with citizen scientists to run camera traps.  The background to this work is presented in this description of the eMammal project, and led to discoveries about what animals use back yard habitat, how coyotes keep feral cats out of protected areas, the impact of dogs on wildlife, vigilance levels of deer related to humans and coyotes, and the impact  of hunting and hiking on wildlife communities.

 

 

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