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Provedor de dados:  ArchiMer
País:  France
Título:  Meroplankton distribution and its relationship to coastal mesoscale hydrological structure in the northern Bay of Biscay (NE Atlantic)
Autores:  Ayata, Sakina-dorothee
Stolba, Robin
Comtet, Thierry
Thiebaut, Eric
Data:  2011-08
Ano:  2011
Palavras-chave:  Meroplankton
Larval transport
Mesoscale structures
River plume
Owenia fusiformis
Pectinaria koreni
Sabellaria alveolata
Bay of Biscay
Resumo:  The relationship between meroplankton distribution and spatio-temporal variability of coastal mesoscale hydrological structure was investigated in the northern Bay of Biscay, North-East Atlantic. For the three coastal polychaetes studied, i.e. Pectinaria koreni, Owenia fusiformis and Sabellaria alveolata, the highest larval abundances were sampled in low-salinity, low-density and high-temperature river plume waters. For two species (P. koreni and O. fusiformis), maximal abundances were observed in the surface and thermocline layers due to ontogenic migrations. Variance partitioning based on multiple regression and redundancy analyses was used to assess the relative roles played by the hydrological environment alone, the geographical space alone and their interactions, i.e. the spatial structure of the hydrological environment. These analyses demonstrate the key role played by the hydrological spatial structure in the distribution of larval abundances. The hydrological environment alone was insignificant, whereas geographical space alone explained a significant part of the variability in meroplankton distribution, probably in conjunction with ecological processes. For species whose benthic populations are spatially structured, the distribution and the size of adult populations and the timing of spawning events can significantly affect larval distribution and dispersal.
Tipo:  Text
Idioma:  Inglês

Editor:  Oxford Univ Press
Formato:  application/pdf
Fonte:  Journal Of Plankton Research (0142-7873) (Oxford Univ Press), 2011-08 , Vol. 33 , N. 8 , P. 1193-1211
Direitos:  The Author 2011. Published by Oxford University Press. All rights reserved. For permissions, please email:


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