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Abundance is a good thing not just for animals, but also for the researchers studying them. This study is, however, harder than it sounds, which is why it is an area of particular interest for Eric Rexstad, research fellow at the University of St. Andrews' Centre for Research into Ecological and Environmental Modelling.
The exact term for this is Distance Sampling, where population numbers of a particular species in a certain area are estimated. For example, "how many harbour porpoises live in the North Sea?" as Eric puts it. Yet this leads onto more complex questions - in particular, how do animal populations react to perturbations or changes in the local environment, such as those caused by pollution or development?
Distance gets distant
One attempt to gauge this more complex picture is…Continue Reading