Quadrat
511307
221251984
2008-06-23T18:43:29Z
89.243.13.164
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A '''quadrat''' is a measured and marked [[rectangle]], often a square, used in [[ecology]] to isolate a [[sample]] area for the purpose of measuring the abundance of different [[species]] within that area. By sampling many quadrats, biologists can create data sets for [[statistical analysis]]. The advent of the quadrat was a key development in the professionalization of ecology.