Nov 30 2010
Mark & Recapture
Population biologists/ecologists rarely have the luxury of counting every organism in an ecosystem or biome, but they still have to try in order to monitor relative biodiversity or determine if a population is threatened or endangered. Today we simulated a popular sampling technique known as mark and recapture. While we used pretzel goldfish as tagged fish, in reality a typical fish tag looks more like this:
Of course, we make some assumptions when we use this method. I think the professor that created this page does a nice job explaining the method and limitations of using it: Estimating the Size of Animal Populations (might be a useful read before finishing your lab write-up).
Finally, here is our class data for today. Please analyze it before reaching and writing your conclusion:
Of course, I’m available by email if you have any questions. -W