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Research Document 1997/97

The interaction of wind, temperature, and catch rate of lobster Homarus americanus on the Acadian peninsula

By M. Comeau and K. Drinkwater

Abstract

The effects of temperature on catch rate of American lobster (Homarus americanus) off the Acadian Peninsula of northern New Brunswick are investigated. Lobster landings and number of trap hauls were available through a volunteer program by fishers and bottom temperatures were measured from moored thermistors. A high positive correlation was found between the mean temperature during the 24 hr prior to trap being hauled and the lobster catch within the Baie des Chaleurs. A similar analysis showed no such correlation outside the Baie along the northern New Brunswick coast adjacent to the Gulf of St. Lawrence. The temperature in the Baie des Chaleurs is wind driven with alongshore winds producing upwelling/downwelling in the classical Ekman response.

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