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Linking local retention, self-recruitment, and persistence in marine metapopulations ArchiMer
Lett, Christophe; Tri Nguyen-huu,; Cuif, Marion; Saenz-agudelo, Pablo; Kaplan, David.
Three indices of larval retention have been used in the literature to assess the tendency for self-maintenance of local marine populations: local retention (LR), self-recruitment (SR), and relative local retention (RLR). Only one of these, LR, defined as the ratio of locally produced settlement to local egg production, has a clear relationship to self-persistence of individual sites. However, SR, the ratio of locally produced settlement to settlement of all origins at a site, is generally easier to measure experimentally. We use theoretical, simulation, and empirical approaches to bridge the gap between these different indices, and demonstrate that there is a proportional relationship between SR and LR for metapopulations close to a stable state and with...
Tipo: Text Palavras-chave: Connectivity; Larval dispersal; Lifetime egg production; Local retention; Marine reserve; Metapopulation; Network persistence; Population persistence; Self-persistence; Self-recruitment.
Ano: 2015 URL: https://archimer.ifremer.fr/doc/00275/38628/81243.pdf
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Linking basin-scale connectivity, oceanography and population dynamics for the conservation and management of marine ecosystems ArchiMer
Dubois, Melodie; Rossi, Vincent; Ser-giacomi, Enrico; Arnaud-haond, Sophie; Lopez, Cristobal; Hernandez-garcia, Emilio.
Aim Assessing the spatial structure and dynamics of marine populations is still a major challenge in ecology. The need to manage marine resources from ecosystem and large-scale perspectives is recognized, but our partial understanding of oceanic connectivity limits the implementation of globally pertinent conservation planning. Based on a biophysical model for the entire Mediterranean Sea, this study takes an ecosystem approach to connectivity and provides a systematic characterization of broad-scale larval dispersal patterns. It builds on our knowledge of population dynamics and discusses the ecological and management implications. Location The semi-enclosed Mediterranean Sea and its marine ecosystems are used as a case study to investigate broad-scale...
Tipo: Text Palavras-chave: Larval dispersal; Local retention; Marine connectivity; Marine ecosystems; Marine protected areas; Mediterranean Sea; Population dynamics; Population genetics; Self-recruitment; Source; Sink dynamics.
Ano: 2016 URL: https://archimer.ifremer.fr/doc/00311/42201/41534.pdf
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