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What Can Fisheries Historians Learn from Marine Science? The Concept of Catch per Unit Effort (CPUE)

Fisheries historians can learn a great deal from marine science. If properly applied, methodologies commonly used by fisheries biologists can enrich fisheries history and offer completely new insights to maritime historians. This article will discuss how one powerful set of analytical tools from fisheries biology can clarify central concepts within the field of fisheries history. 1 For many years, historians have examined structural changes in the fisheries, both in national and international contexts. Their growth and decline have fascinated historians, and economic, political, social and technological aspects have been analysed to explain their fluctuations. Recently, the marine environment has also received attention since fishermen's success ultimately depends on fish abundances. European, North American and Asian historians have argued that nineteenthand twentieth-century fishermen introduced more efficient gear and sailed to more distant waters in order to increase their catching power and maintain profitable fisheries. Thus, fishing effort was increased to counteract the effects of declining fish stocks. 2