The Importance of Species: Perspectives on Expendability and Triage

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Peter M. Kareiva, Simon A. Levin
Princeton University Press, 2003 - Nature - 427 pages
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A great many species are threatened by the expanding human population. Though the public generally favors environmental protection, conservation does not come without sacrifice and cost. Many decision makers wonder if every species is worth the trouble. Of what consequence would the extinction of, say, spotted owls or snail darters be? Are some species expendable?

Given the reality of limited money for conservation efforts, there is a compelling need for scientists to help conservation practitioners set priorities and identify species most in need of urgent attention. Ecology should be capable of providing guidance that goes beyond the obvious impulse to protect economically valuable species (salmon) or aesthetically appealing ones (snow leopards). Although some recent books have considered the ecosystem services provided by biodiversity as an aggregate property, this is the first to focus on the value of particular species. It provides the scientific approaches and analyses available for asking what we can expect from losing (or gaining) species.

The contributors are outstanding ecologists, theoreticians, and evolutionary biologists who gathered for a symposium honoring Robert T. Paine, the community ecologist who experimentally demonstrated that a single predator species can act as a keystone species whose removal dramatically alters entire ecosystem communities. They build on Paine's work here by exploring whether we can identify species that play key roles in ecosystems before they are lost forever. These are some of our finest ecologists asking some of our hardest questions.

They are, in addition to the editors, S.E.B. Abella, G. C. Chang, D. Doak, A. L. Downing, W. T. Edmondson, A. S. Flecker, M. J. Ford, C.D.G. Harley, E. G. Leigh Jr., S. Lubetkin, S. M. Louda, M. Marvier, P. McElhany, B. A. Menge, W. F. Morris, S. Naeem, S. R. Palumbi, A. G. Power, T. A. Rand, R. B. Root, M. Ruckelshaus, J. Ruesink, D. E. Schindler, T. W. Schoener, D. Simberloff, D. A. Spiller, M. J. Wonham, and J. T. Wootton.


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About the author (2003)

Kareiva is the Chief Scientist and a Vice President for The Nature Conservancy, the world's largest environmental organization. He also maintains an appointment at Santa Clara University in California. Before moving to The Nature Conservancy, Dr. Kareiva was the Director of the Division of Conservation Biology at National Oceanic and Atmospheric Administration (NOAA) Northwest Fisheries Science Center. He has served on the editorial boards of over a dozen different journals, has edited six books, and has been a faculty member at Brown University and the Universities of Washington and Virginia. He has received a Guggenheim fellowship and done research, consulting, teaching, or conservation work in twenty countries throughout Europe, Asia, and Latin America. He has authored more than 100 papers and articles, many of which were written in collaboration with colleagues in fisheries, agriculture, economics, and forestry.

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