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Model-derived connectivity patterns along the western Iberian Peninsula: asymmetrical larval flow and source-sink cell

2013; Inter-Research; Volume: 485; Linguagem: Inglês

10.3354/meps10324

1616-1599

Rita Nolasco, Jesús Dubert, C. S. P. Domingues, Ana Cordeiro Pires, Henrique Queiroga,

Crustacean biology and ecology

MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout the JournalEditorsTheme Sections MEPS 485:123-142 (2013) - DOI: https://doi.org/10.3354/meps10324 Model-derived connectivity patterns along the western Iberian Peninsula: asymmetrical larval flow and source-sink cell R. Nolasco1,2, J. Dubert1,2, C. P. Domingues1,3, A. Cordeiro Pires1,2, H. Queiroga1,3,* 1CESAM, Universidade de Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal 2Departamento de Física and 3Departamento de Biologia, Universidade de Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal *Corresponding author. Email: henrique.queiroga@ua.pt ABSTRACT: Predicting the spatial and temporal patterns of marine larval dispersal and supply is a challenging task, requiring the use of novel approaches capable of capturing the inherent variability in the mechanisms involved. Biophysical models are emerging as important tools used to understand dispersal and recruitment of marine larvae on several scales, and are used here to investigate these problems in the Northeast Atlantic Iberian Upwelling system. We used a Regional Ocean Modelling System configuration coupled with an individual-based model in order to simulate diel vertical migration and estuary-reinvasion behaviours, growth and mortality of larvae of the common shore crab Carcinus maenas. With this simulation we aimed to hindcast coast-wide connectivity patterns under the atmospheric and river flow forcings of the years 2001 to 2009. In a previous study, this model had been shown to produce time series of larval supply to a single population, at daily frequencies, that were strongly correlated with observed time series. In the current application, the model predicts that along-shore advection of larvae is variable from year to year; is correlated with the annual North Atlantic Oscillation index, which reflects the strength and persistence of equatorward winds; and is usually asymmetric, with a predominant equatorward transport. The model also predicts a source-sink cell located between the Muros-Noia and Mondego estuaries, where populations in the north consistently act as net sources of larvae supplying net sink populations to the south. This source-sink cell appears to be related to the existence of habitat gaps, coast geometry and an oceanographic retention effect associated with upwelling dynamics. KEY WORDS: Population connectivity · Larval dispersal · Modelling · Iberian Peninsula · ROMS · Carcinus maenas Full text in pdf format PreviousNextCite this article as: Nolasco R, Dubert J, Domingues CP, Cordeiro Pires A, Queiroga H (2013) Model-derived connectivity patterns along the western Iberian Peninsula: asymmetrical larval flow and source-sink cell. Mar Ecol Prog Ser 485:123-142. https://doi.org/10.3354/meps10324 Export citation RSS - Facebook - Tweet - linkedIn Cited by Published in MEPS Vol. 485. Online publication date: June 27, 2013 Print ISSN: 0171-8630; Online ISSN: 1616-1599 Copyright © 2013 Inter-Research.