Copy_of_The_Theory_of_Island_Biogeography.pdf -...

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Introduction to Habitat Fragmentation and the SLOSS debate/Rewilding The Theory of Island Biogeography - Activity Definition Think of a large office building. It can hold many different people, possibly even several different companies. A smaller office building will hold far fewer people, and may be limited to only one or two different companies. The limit is due to the amount of space - a larger space can hold more people and more companies, while a smaller space can't hold as many. The same idea applies to island biogeography . The theory of island biogeography simply says that a larger island will have a greater number of species than a smaller island. For this theory, an 'island' is any ecosystem that is remarkably different from the surrounding area. So, this could refer to an actual island in the ocean, or it may be an oasis that is surrounded by a desert. The theory predicts other things, too. For instance, everything else being equal, distant islands will have lower immigration rates than those close to a mainland, and equilibrium will occur with fewer species on distant islands. Close islands will have high immigration rates and support more species. By similar reasoning, large islands, with their lower extinction rates, will have more species than small ones -- again everything else being equal (which it frequently is not, for larger islands often have a greater variety of habitats and more species for that reason). In your groups, you will run a virtual simulation to examine the interactions between island size and distance from the mainland. The link is below. Directions: Part 1: Control run 1) First, you will run the models ( tropical ) when both islands are the same diameter (256km) and the

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