Essentials of Ecology

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and Nicole Barone, copy editor Andrea Fincke, layout
expert Bonnie Van Slyke, photo researcher Abigail

Reip, artist Patrick Lane, media editor Kristina Raz-
mara, assistant editor Lauren Oliveira, editorial assis-

tant Samantha Arvin, and Brooks/Cole’s hard-working

sales staff.
We also thank Ed Wells and the dedicated team who

developed the Laboratory Manual to accompany this

book, and the people who have translated this book into

eight languages for use throughout much of the world.

We also deeply appreciate having had the opportu-

nity to work with Jack Carey, former biology publisher

at Brooks/Cole, for 40 years before his recent retirement.

We now are fortunate and excited to be working with

Yolanda Cossio, the biology publisher at Brooks/Cole.

G. Tyler Miller, Jr.

Scott Spoolman

Guest Essayists

Guest essays by the following authors are available

onCengageNOW:M. Kat Anderson, ethnoecologist
with the National Plant Center of the USDA’s Natural

Resource Conservation Center; Lester R. Brown, presi-

dent, Earth Policy Institute; Michael Cain, ecologist and
adjunct professor at Bowdoin College; Herman E. Daly,

senior research scholar at the School of Public Affairs,
University of Maryland; Garrett Hardin, professor

emeritus (now deceased) of human ecology, University
of California, Santa Barbara; Paul G. Hawken, envi-

ronmental author and business leader; Jane Heinze-

Fry, environmental educator; Amory B. Lovins,
energy policy consultant and director of research, Rocky

Mountain Institute; Bobbi S. Low, professor of resource

ecology, University of Michigan; Lester W. Milbrath,

former director of the research program in environ-

ment and society, State University of New York, Buffalo;

Peter Montague, director, Environmental Research

Foundation;Norman Myers, tropical ecologist and

consultant in environment and development; David W.

Orr, professor of environmental studies, Oberlin Col-

lege;Vandana Shiva, physicist, educator, environmen-

tal consultant; Nancy Wicks, ecopioneer and director

of Round Mountain Organics; Donald Worster, envi-

ronmental historian and professor of American history,

University of Kansas.

Quantitative Exercise Contributors

Dr. Dean Goodwin and his colleagues, Berry Cobb,

Deborah Stevens, Jeannette Adkins, Jim Lehner, Judy

Treharne, Lonnie Miller, and Tom Mowbray, provided

excellent contributions to the Data Analysis and Eco-

logical Footprint Analysis exercises.