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Lecture

Conservation

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Department
Biology
Course
BIOLOGY 1P03
Professor
Douglas Davidson
Semester
Fall

Description
increases rapidly as patch size decreases species from surrounding habitats colonize on the edges of patches to compete with or prey on species living therespecies disappeared from isolated patches when the surrounding forest was cutspecies that are lost from small habitat fragments are unlikely to become reestablished there because dispersing individuals are unlikely to find isolated fragmentsa species may persist in a small patch if it is connected to other patches by corridors of habitat through which individuals can disperse Invasivewhen species spread widely and become unduly abundant often at a cost to the native species of the regionmost introduced species are imported without their natural enemies while native plants must devote considerable energy to defending themselves against the native herbivoresinvasive plants generally have high rates of growth and reproduction because they spend less energy in p
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