ANT333Y1 Lecture Notes - Lecture 18: True Lemur, Hylobates, Folivore

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Landscape processes (forest loss, forest fragmentation, & edge effects). Ant333 lecture #18 primate biogeography & conservation biology. Two separate processes, but recent studies often fail to distinguish between processes: loss = decrease in size, fragmentation = splitting up of forest. Extend range to encompass multiple fragments; home range size increases, but density decreases. Exploit matrix (area between forest); increased mortality in matrix. Slowly reach extirpation (loss of species in small geographic area), may be lag effect (population size is not increasing because weaning does not occur). Penetration of abiotic and biotic conditions into forest interior (up to 5 kms in se asia). Madagascar has lost ~ 90% of its tropical rain forest. Abiotic edge effects extreme in se madagascar. For food trees, tree density positively correlated with distance from forest edge. No correlations for a. laniger density and any characteristics of food trees. Without outlier in data, rubriventer exhibits positive edge responses.

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