Recruitment patterns and precautionary exploitation rates for Geoduck (Panopea abrupta) populations in British Columbia.

From: Journal of Shellfish Research | Date: August 1, 2006| Author: Hand, Claudia; Zhang, Zane | Copyright information

ABSTRACT An age-structured projection model was used to study the impacts of alternative exploitation intensities on geoduck populations, based on a large accumulation of survey data, age composition data and published estimates of natural mortality. Data were analyzed and results presented by geographic region. Historic recruitment patterns were back calculated using an age-structured model. Trends in recruitment were independent of the value of M used, although rates were higher w...

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