.|  Baltimore Ecosystem Study
Gray squirrel density, habitat suitability, and behavior in urban parks

Eastern Gray Squirrel
Photograph: Tommy Parker
BES Co-PIs Tommy Parker and Charlie Nilon have authored a paper which appeared in the journal Urban Ecosystems.
The paper examines the effect of urbanization on squirrels. The process is called "synurbization" and manifests itself in changes in density, increased instraspecific aggression, and reduced fear of humans (wariness).
This paper demonstrates and quantifies relationships between density and aggression, density and reduced wariness, and density and habitat suitability.
Details on the paper, and an abstract, can be found through the digital object identifier (doi) at http://www.springerlink.com/content/8125237lk3r6478x/.
The paper is available in Adobe Portable Document form here: http://beslter.org/bes_publications/2008/parker_and_nilon/parker_and_nilon.pdf.

This research was supported by funding from the NSF Long-term Ecological Research (LTER) Program. This material is based upon work supported by the National Science Foundation under Grant No. 1027188. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.