Relationships between population spatial occupation andpopulation dynamics ...

• Main Authors: Woillez, Mathieu, Petitgas, P., Rivoirard, J., Fernandes, P., Hofstede, R. ter, Korsbrekke, K., Orlowski, A., Spedicato, M. T., Politou, C.-Y.
• Format: Conference Object
• Language: unknown
• Published: ASC 2006 - Theme session O 2024
• Subjects: Ecosystem observation, processes and dynamics; Pressures, impacts, conservation, and management; Barents Sea; Hake; North East Atlantic
• Online Access: https://dx.doi.org/10.17895/ices.pub.25259176.v1; https://ices-library.figshare.com/articles/conference_contribution/Relationships_between_population_spatial_occupation_andpopulation_dynamics/25259176/1

No abstracts are to be cited without prior reference to the author.Population dynamics is commonly described non-spatially using parameters of population demography and vital traits. Population spatial organisation is therefore considered implicit and its importance in the population dynamics ignored. The present study evidences on a variety of stocks correlation between population spatial distribution indices, population abundance, recruitment and mortality. Series of research fisheries monitoring surveys were considered for a range of different stocks (cod, herring, anchovy, hake, mullet) in different regions of the North East Atlantic and Mediterranean (North Sea, Barents Sea, Baltic Sea, Bay of Biscay, Tyrrhenian Sea, Ionian Sea and Aegean Sea). For each population, each age and each year, 9 spatial indices were computed that characterised the spatial distribution in their centre of gravity, inertia, anisotropy, extension areas, number of patches and microscale structure. For each population and age, ...