Ecological and fisheries consequences of a mismatch between biological population structure and mangament units of Atlantic cod in US waters ...

• Main Authors: Kerr, L. A., Cadrin, S. X., Kovach, A.
• Format: Conference Object
• Language: unknown
• Published: ASC 2010 - Theme session B 2024
• Subjects: Ecosystem observation, processes and dynamics; Pressures, impacts, conservation, and management; atlantic cod
• Online Access: https://dx.doi.org/10.17895/ices.pub.25068515; https://ices-library.figshare.com/articles/conference_contribution/Ecological_and_fisheries_consequences_of_a_mismatch_between_biological_population_structure_and_mangament_units_of_Atlantic_cod_in_US_waters/25068515

No abstracts are to be cited without prior reference to the author.A mismatch between biological population structure of a species and spatial management units of the fishery can present problems, because the scale of management action should match the scale of biological processes. We hypothesized that recognition of fine-scale population structuring of Atlantic cod in US waters will redefine our perceptions of the productivity, stability, and sustainable yield of the regional population. The goal of our study was to use simulation modelling as a tool to examine the ecological and fisheries consequences of a mismatch between management unit and biological population structure, as defined by genetic analysis, of Atlantic cod. Two agestructured simulation models were compared to test our hypothesis: (i) the management unit model, wherein fish were grouped based on the current spatially defined US management areas (Gulf of Maine and Georges Bank), and (ii) the biological structure model, which consisted of ...