Ecological Networks

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In this video we will be talking about ecological networks the application of network theory to modeling and analyzing ecosystems in terms of their network of connections. We discuss some of the overall features to these networks including the overall level of connectivity, linkage density and degree distribution. We look at network modularity as describing to what extent the network can be divided into highly interacting local clusters, how centrality can be used as a measurement to how central a node is within a network and thus how significant it is within the overall system. Finally we will look at ecosystem resiliency in terms of the integrity of its network, noting how this can both enable robustness by enabling a greater flow of resources through the system, but also how it can add to vulnerability as it gives rise to the possibility of cascading food web disturbances.

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