University of Illinois at Chicago
SullivanEcologyEvolution.jpg (398.68 kB)
Download file

Love ‘em or Hate ‘em, you can help to study them

Download (398.68 kB)
posted on 2011-04-15, 00:00 authored by Steve Sullivan
"Unlike most mammals, tree squirrels are diurnal, active year round, and can live well near humans. Because of this, the range of tree squirrels is expanding and they are an important component of our urban ecosystems. However some places have only one species of tree squirrel while others have two, and some places that should have squirrels don’t. I am studying what factors influence the distribution and abundance of squirrels with the help of thousands of citizen scientists participating through This Fox Squirrel (Sciurus niger), photographed during a census, is a species that is usually not found in densely urban areas in Chicagoland but is common in some suburbs. Though not the most numerous organism depicted in this photograph, the squirrel is the most dominant one. In many urban areas, squirrels are second only to humans as the most influential mammal on the violets, crocus, daffodils, sycamore, oak, bluegrass and similar organisms also depicted in the photo."


Publisher Statement

Entry in 2010 in The Image of Research, a competition for students in graduate or professional degree programs at UIC, sponsored by UIC's Graduate College and the University Library. Images of award recipients and honorable mention images on exhibition in the Richard J. Daley Library and the Library of the Health Sciences, April 15-May 31, 2010.

Issue date


Usage metrics


    No categories selected