Island Biogeography and Conservation Biology Islands as Natural Ecological Experiments.

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Presentation transcript:

Island Biogeography and Conservation Biology Islands as Natural Ecological Experiments

Krakatau, Indonesia

Picture-winged Drosophila

Male picture-winged flies fighting at a “lek”

Species Area Curves S = C A z log S = log C + z log A Estimated z Values for Various Terrestrial Plants and Animals on Different Island Groups __________________________________________________________________ Fauna or flora Island Group z __________________________________________________________________ Carabid beetlesWest Indies 0.34 Ponerine antsMelanesia 0.30 Amphibians and reptilesWest Indies Breeding land and freshwater birdsWest Indies Breeding land and freshwater birdsEast Indies Breeding land and freshwater birdsEast-Central Pacific Breeding land and freshwater birdsIslands of Gulf of Guinea Land vertebratesIslands of Lake Michigan Land plantsGalápagos Islands __________________________________________________________________

Equilibrium Theory of Island Biogeography E. O. Wilson R. H. MacArthur

Freeport-McMoran Mine, Irian Jaya, New Guinea

Conservation Biology Value of Biodiversity Hot spots of diversity SLOSS debate, Design of Nature Reserves Minimum viable population size Genetic bottleneck Population viability analysis Sensitivity analyses of Leslie matrices “Extinction vortex” Habitat loss, habitat fragmentation, small population size, genetic and demographic stochasticity Toxic pollution and climatic changes

Different types of metapopulations

“A land ethic changes the role of Homo sapiens from conqueror of the land community to plain member and citizen of it. It implies respect for his fellow-members and also respect for the community as such.” Aldo Leopold: