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Distribution of cephalopod paralarvae in relation to the regional oceanography of the western Iberia
Moreno, A.; dos Santos, A.; Piatkowski, U.; Santos, A.M.P.; Cabral, H. (2008). Distribution of cephalopod paralarvae in relation to the regional oceanography of the western Iberia. J. Plankton Res. 31(1): 73-91. https://dx.doi.org/10.1093/plankt/fbn103
In: Journal of Plankton Research. Oxford University Press: New York,. ISSN 0142-7873; e-ISSN 1464-3774, meer
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| Auteurs | | Top | Dataset |
- Moreno, A.
- dos Santos, A.
- Piatkowski, U., meer
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- Santos, A.M.P.
- Cabral, H.
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| Abstract |
The present study analyses the distribution of cephalopod paralarvae off the Portuguese coast. The effects of temporal and physical variables on Loligo vulgaris, Octopus vulgaris, sepiolid and ommastrephid abundances are analysed with generalized linear models. Their distribution patterns are discussed in relation to mesoscale features, including currents, thermal fronts and coastal upwelling cross-shelf transport, prevailing in the western Iberia upwelling system. Paralarvae of the neritic species occur during a considerably extended period of the year with two or three abundance peaks within the highly productive upwelling system of the western Portuguese coast and contrasting with the Gulf of Cadiz area. Temperature and upwelling were shown to be the most important variables in modulating seasonality and distribution of these paralarvae. The influence of the physical environment is particularly pronounced for the paralarvae of O. vulgaris, following distinct patterns according to the oceanography of the western Iberia and the Gulf of Cadiz systems. The paralarvae of oceanic species, which in many cases have their northern limit of distribution at these latitudes, were mainly found in the southern part of the sampling area. The distribution of these species indicates that the prevailing oceanographic features of the Gulf of Cadiz system, especially fronts, together with temperature act as boundaries to geographic dispersal, contributing to an area of high cephalopod biodiversity in the southern Portuguese waters. |
| Dataset |
- Dos Santos, A.; Marraccini, A.; Stehle, M.J.; Lourenço, P.; Pires, R.; Queiroga, H. (2017). Zooplankton and Ichthyoplankton of the North Western Portuguese Coast in May 2002, meer
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