Inaugural Publication

Ecology of Center City, Philadelphia

By Kenneth D. Frank

A trove of astonishing observations in natural history

Twenty-nine beautifully illustrated chapters offer revelations about the ecology of downtown Philadelphia. Combined, they present a surprising discovery: This inner city district is ecologically dynamic and resilient. The author draws on Philadelphia’s unique legacy of scholarship in the field of natural history—spanning almost three centuries. A comparable exposition of the center of a major metropolitan area has never before been published.


  • 386 pages, 272 illustrations, most in full color
  • 8.5 X 11 inches
  • Softcover
  • Published in 2015, online and in print
  • Print edition for sale (click to buy)
  • PDF free (scroll down for links)
  • May be freely reproduced, with attribution*
  • ISBN 978-0-692-50648-6

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Entire Book




*This work is published under Creative Commons Attribution 4.0 International License.


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Illuminating the bond between people and natural history