Assemblage structure of ichthyoplankton in the NE Atlantic in spring under contrasting hydrographic conditions

Abstract The ichthyoplankton assemblage in the Atlantic region off the NW Iberian peninsula (AR) and in the southern Bay of Biscay (SBB) and the response of the larval fish species distribution to the relatively rapidly changing hydrographic conditions in spring 2010 were studied using two ichthyopl...

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Autor principal:	J. M. Rodriguez
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2019
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/cac07d26327b45dcbb171648547d0b4b
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spelling	oai:doaj.org-article:cac07d26327b45dcbb171648547d0b4b2021-12-02T15:08:47ZAssemblage structure of ichthyoplankton in the NE Atlantic in spring under contrasting hydrographic conditions10.1038/s41598-019-44918-52045-2322https://doaj.org/article/cac07d26327b45dcbb171648547d0b4b2019-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-019-44918-5https://doaj.org/toc/2045-2322Abstract The ichthyoplankton assemblage in the Atlantic region off the NW Iberian peninsula (AR) and in the southern Bay of Biscay (SBB) and the response of the larval fish species distribution to the relatively rapidly changing hydrographic conditions in spring 2010 were studied using two ichthyoplankton cruises. The SBB showed a more abundant and diverse ichthyoplankton assemblage than the AR, although the larval fish assemblage (LFA) was structured into on-shelf and off-shelf assemblages in both regions. Inter-sampling variability related to downwelling/upwelling regimes was observed in the cross-shelf assemblage distribution in the SBB but not in the AR. This suggests that LFA distributions in the area of this study are good indicators of downwelling and weak coastal upwelling regimes but not of relatively strong coastal upwelling or upwelling filaments. Although depth was identified by multivariate analyses as being the most important variable explaining larval fish species distributions, a shelf-breakfront in the SBB and the surface offshore (onshore) flows associated with coastal downwelling (upwelling) in the AR seems to have been key in defining and maintaining assemblage boundaries. Results of this study should also encourage marine research institutions to use routine ichthyoplankton sampling to monitor fish communities and their responses to global warming.J. M. RodriguezNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 9, Iss 1, Pp 1-16 (2019)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q J. M. Rodriguez Assemblage structure of ichthyoplankton in the NE Atlantic in spring under contrasting hydrographic conditions
description	Abstract The ichthyoplankton assemblage in the Atlantic region off the NW Iberian peninsula (AR) and in the southern Bay of Biscay (SBB) and the response of the larval fish species distribution to the relatively rapidly changing hydrographic conditions in spring 2010 were studied using two ichthyoplankton cruises. The SBB showed a more abundant and diverse ichthyoplankton assemblage than the AR, although the larval fish assemblage (LFA) was structured into on-shelf and off-shelf assemblages in both regions. Inter-sampling variability related to downwelling/upwelling regimes was observed in the cross-shelf assemblage distribution in the SBB but not in the AR. This suggests that LFA distributions in the area of this study are good indicators of downwelling and weak coastal upwelling regimes but not of relatively strong coastal upwelling or upwelling filaments. Although depth was identified by multivariate analyses as being the most important variable explaining larval fish species distributions, a shelf-breakfront in the SBB and the surface offshore (onshore) flows associated with coastal downwelling (upwelling) in the AR seems to have been key in defining and maintaining assemblage boundaries. Results of this study should also encourage marine research institutions to use routine ichthyoplankton sampling to monitor fish communities and their responses to global warming.
format	article
author	J. M. Rodriguez
author_facet	J. M. Rodriguez
author_sort	J. M. Rodriguez
title	Assemblage structure of ichthyoplankton in the NE Atlantic in spring under contrasting hydrographic conditions
title_short	Assemblage structure of ichthyoplankton in the NE Atlantic in spring under contrasting hydrographic conditions
title_full	Assemblage structure of ichthyoplankton in the NE Atlantic in spring under contrasting hydrographic conditions
title_fullStr	Assemblage structure of ichthyoplankton in the NE Atlantic in spring under contrasting hydrographic conditions
title_full_unstemmed	Assemblage structure of ichthyoplankton in the NE Atlantic in spring under contrasting hydrographic conditions
title_sort	assemblage structure of ichthyoplankton in the ne atlantic in spring under contrasting hydrographic conditions
publisher	Nature Portfolio
publishDate	2019
url	https://doaj.org/article/cac07d26327b45dcbb171648547d0b4b
work_keys_str_mv	AT jmrodriguez assemblagestructureofichthyoplanktonintheneatlanticinspringundercontrastinghydrographicconditions
_version_	1718388027588345856

Assemblage structure of ichthyoplankton in the NE Atlantic in spring under contrasting hydrographic conditions

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