The detection of species and their abundance

What’s the relationship between a species’ abundance and an observer’s chance of spotting it?

Strange scenes were recently reported in Royal Park next to Melbourne Uni. People were spotted planting tiny native plants in seemingly random patterns in the grass. And nearby these same people were said to have been dropping five and ten cent pieces in the bush. But there was method in this madness. We were preparing an experiment that would help us understand the relationship between detectability and abundance.

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