How does exploitation of prey fish affect population growth rate in changing seas? ...

• Main Authors: Durant, Joël M., Hidalgo, Manuel, Ciannelli, Lorenzo
• Format: Conference Object
• Language: unknown
• Published: ASC 2010 - Theme session R 2024
• Subjects: Pressures, impacts, conservation, and management; Arctic; Barents Sea; Bering Sea; Hake; Norwegian Sea; Arctic cod; Northeast Arctic cod
• Online Access: https://dx.doi.org/10.17895/ices.pub.25133270; https://ices-library.figshare.com/articles/conference_contribution/How_does_exploitation_of_prey_fish_affect_population_growth_rate_in_changing_seas_/25133270

No abstracts are to be cited without prior reference to the author.Population growth, hence the population’s persistence, is affected by several factors such as climate, species interaction, and harvesting pressure the last having been shown to make the marine populations more sensitive to climate forcing. The age truncated or juvenescent populations are a worldwide consequence of the protracted size-selective mortality of commercial fishing on the older and larger individuals. This process also increases a populations’ ability to directly respond to environmental fluctuations, emphasizing the importance of the interaction between fisheries, environment and internal dynamics that produces complex synergic effects on the population dynamics of marine species. We used a comparative approach investigating commercially fished species on different systems: the Norwegian sea-Barents Sea (Northeast Arctic cod), the Atlantic Ocean (European hake), the Mediterranean Sea (European hake), and the Bering Sea (Pollock). ...