Biological invasions [electronic resource] : economic and environmental costs of alien plant, animal, and microbe species / edited by David Pimentel.

Biological invasions [electronic resource] : economic and environmental costs of alien plant, animal, and microbe species / edited by David Pimentel.

2nd ed.

9781439829905
9781439829912 (electronic book)

Boca Raton, Fla. : CRC Press, 2011.

English

xiv, 430 p. : ill., maps.

QH353 .B57 2011

577/.18

"Some 10 million species of plants, animals, and microbes are thought to inhabit the earth, but so far only about 1.5 million of these have been identified. A mere 15 of the approximately 250,000 known plant species provide the world's human population with about 90 percent of its food.1 These crops are wheat, rice, corn, rye, barley, soybeans, and common millet. Although these crops are now grown in nearly every nation, only one or two of these crop species originated in any specific country. Among animals, eight species currently provide the bulk of the meat, milk, and eggs consumed by humans. These leading livestock species are cattle, buffalo, sheep, goats, horses, camels, chickens, and ducks. Farms in the United States feed approximately 100 million cattle, 7 million sheep, and 9 billion chickens each year"-- Provided by publisher.

Includes bibliographical references and index.

Access limited to authorized users.

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