L15_15_Biodiversity

G climate change human disturbance landslides how do

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Unformatted text preview: te change leads to decrease in rainfall, forest can no longer survive. Very few plants are adapted to the high light, high temperature, low moisture environments. Therefore the island takes a big hit in biodiversity. Ecotones: Sensi;ve to environmental change. Enhanced biodiversity. Important role in faunal turnover / evolu;on, ecosystem stability. Now consider an island with a gradient from forest on one side to grassland on the other. When the same climate change happens, there is a diverse group of organisms that is ready to occupy former forest territory. The island does not take such a big hit in biodiversity. Treefall gaps: A major ecological disturbance can be created in rainforests when a large tree falls. Light levels reaching forest floor can increase by orders of magnitude, dras;cally changing the kinds of species that grow in an...
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This document was uploaded on 03/26/2014 for the course GEC AS.270.103 at Johns Hopkins.

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