The ultimate purpose of conservation science is to inform and affect conser
vation policy. Therefore, conservation biologists and all the people who pr
oduce, review, and apply conservation research should evaluate tbe success
of their knowledge according to its ability to influence conservation decis
ions. In addition to possessing conventional "scientific" attributes such a
s validity generalizability, and precision, conservation knowledge must als
o possess qualities that make it effective in the political arena of decisi
on making. "Public ecology" is a philosophy and practice of conservation sc
ience that goes beyond biology and beyond the norms of modern science to co
nstruct knowledge that is useful for environmental decision making. As post
-normal conservation science, public ecology is defined by the following at
tributes: evaluative, contextual, multiscalar, integrative, adaptive, and a
ccessible. We discuss the need for a more public ecology and describe tbe q
ualities that make it a more powerful ecology.