This is a guest post by Andrew McKay, who is a trained ecologist and currently works in fisheries in New Zealand. In his spare time he writes about peak oil and energy issues at Southern Limits.
Within the fields of harvest and fisheries management catch per unit effort (CPUE) is one method that is used to determine the health of a biological resource. The underlying assumption is that as a population declines it becomes harder to catch and therefore CPUE decreases.
Effort can be measured in a number of ways. In fisheries this unit of effort could be vessels ...
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