SVENDSEN 1 showed that the estimate of an earthworm population obtained by hand sorting soil samples was much greater than that by the prevalent method of bringing worms to the soil surface with ...
It's not feasible to contact every member of the population, so only a sample, or a subset, of that population is included when conducting statistical research. The assumption is that the sample is ...
Almost every wildlife biologist has experienced the sinking feeling of finding an injured or dead animal in a live-trap. Live-traps are used to capture animals, so we can monitor the health of ...
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