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Bobcat Movement Patterns in Urban Southern California

Information presented is factual at the time of creation.
If no transcript and/or closed-caption is available, please notify us.
My name is William Perry. I'm a GIS specialist with the Western

Ecological Research Center of the U.S. Geological Survey. Alongside me is

Robert Lugo who is also a GIS specialist with USGS, and we're going to

show you today an animation we did in Google Earth which shows the

movement path of a GPS-collared male bobcat that crossed California

Highway 71 three times during a 24-hour period. This was for a project

that was funded via Caltrans. Two of our scientists worked on that Erin

Boydston and Lisa Lyren. We took that information and created this

animation to show you visually how the bobcat is using the landscape and

the highway under-crossings.

So I'll start the animation. You can see here the point locations on the

map. Yellow represents daytime locations, blue represents the nighttime

locations. We've already flown over the highway -- you can see the time-

stamp. The GPS collars would take a point approximately every 15 minutes.

And the paired white symbols on each side of the highway represent the

actual culvert or under-crossings as we call them.

So you can as the bobcat made its way through the landscape, he criss-

crossed over the highway three different times. And now you can see we're

now actually going past midnight and going into the next calendar day.

And we end up on the east side of California Highway 71 in an area called

Prado Basin, which is heavily forested.

So this map here shows the cumulative data points for that same bobcat we

saw in the Google Earth animation. You'll see the small dark points are

the GPS locations and the red lines that connect those. The highlighted

route in cyan is the one we saw in the animation.

In addition to this, we have data for 14 additional bobcats and for 11

coyotes, and this helps to give us an idea of how these carnivores use

the landscape in this urban environment.


Title: Bobcat Movement Patterns in Urban Southern California


USGS biologists are using GPS technology to track carnivores as they cross the highways of urban Southern California. USGS Western Ecological Research Center biologists Erin Boydston and Lisa Lyren attached GPS tracking collars to wild bobcats to shed light on how these carnivores are using highway under-crossings to travel between habitats, and whether urban development in Los Angeles and Orange County landscapes is shifting wildlife behavior. GIS specialist Bill Perry explains in this Google Earth animation.

Location: Los Angeles, CA, Hwy 71, USA

Date Taken: 7/11/2011

Length: 2:26

Video Producer: Ben Young Landis , USGS Western Ecological Research Center

Note: This video has been released into the public domain by the U.S. Geological Survey for use in its entirety. Some videos may contain pieces of copyrighted material. If you wish to use a portion of the video for any purpose, other than for resharing/reposting the video in its entirety, please contact the Video Producer/Videographer listed with this video. Please refer to the USGS Copyright section for how to credit this video.

Additional Video Credits:

Ben Young Landis, William Perry, Lisa Lyren, Erin Boydston


For more information see: Santa Monica Mountains Field Station

File Details:

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Bobcats (Set) RSS Media RSS Bobcat Movement Patterns in Urban Southern California
In: Biology collection

Tags: Angeles Bill Boydston California Caltrans County Earth Erin GPS Google Lisa Los Lugo Lyren Orange Perry Roberto Southern USGS WesternEcologicalResearchCenter bobcat corridors coyote ecology kittens road telemetry tracking urban wildlife


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