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Insect biological weed control: an important and underutilized management tool for maintaining native plant communities threatened by exotic plant introductions Richard A. Malecki

By: Material type: TextTextPublication details: New York : 1994Abstract: The biota of North America is changing at an unprecedented rate due to human disruptions of natural systems coupled with deliberate and accidental introductions of foreign species (Mooney and Drake 1986).Over the last two centuries, at least 4,500 species of foreign origin have established free-living populations in the United States (U.S.Congress 1993). These include several thousand plant and insect species and several hundred vertebrate, mollusk, fish, and plant pathogens.Although some non-indigenous species are beneficial, many have proven harmful, creating a growing economic and environmental burden for the country.
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DU Report DU Report Research Library DU Reports Non-fiction MAL (Browse shelf(Opens below)) Available 2612

The biota of North America is changing at an unprecedented rate due to human disruptions of natural systems coupled with deliberate and accidental introductions of foreign species (Mooney and Drake 1986).Over the last two centuries, at least 4,500 species of foreign origin have established free-living populations in the United States (U.S.Congress 1993). These include several thousand plant and insect species and several hundred vertebrate, mollusk, fish, and plant pathogens.Although some non-indigenous species are beneficial, many have proven harmful, creating a growing economic and environmental burden for the country.

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