Biology 3442F/G Lecture Notes - Lecture 12: Habitat Destruction, Beta Diversity, Termite

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#2 - fragments are poor quality to begin with. It is now clear that habitat loss results in changes to habitat: insult to injury (making a bad situation worse) Fragments left behind are the worst habitat to begin with: steep slopes, poor soils. Inaccessible areas: and species do not persist in poor quality habitats! The eternal external threat : dan janzen professor of biology university of pennsylvania, a continuous homogenization of remnants and the surrounding matrix as remnants continue to degrade beta diversity = 0. Biological dynamics of forest fragments project (bdffp; est. Long-term study on forest fragmentation: planned logging to produce fragments of varying sizes (1 [100 % edge] 100 ha [36 % edge]) Studies of tree recruitment: allows for controlled experimentation. Area-sensitive species are at great risk of extinction: comparing small versus large fragments, fewer species in small fragments.

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