Graph Theoretic Approach to Characterize Food Web

Bhagya Jyoti Nath

Department of Mathematics, Kaliabor College, Nagaon, Assam, INDIA.


A food web is a natural interconnection between different species in an ecological community. From a food web we can have the informations of what-eats-what in an ecological community. These food webs can be considered as graph and they can be studied in graph theoretic approach. The main goal of this article is to observe how the graph theoretic concepts can be used to characterize a food web. We can use digraphs to model complex trophic relations and use the concepts of graph to calculate the relative importance of each species in the food web. In this article we have considered some examples of ecological community and try to apply the graph theory concepts to describe it. We have also included some observations and results of food webs using different graph theory concepts.

Keywords :Food web, Digraph, Trophic level and Trophic status.

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