Distribution of cephalopod paralarvae in relation to the regional oceanography of the western Iberia.

Moreno, A., Dos Santos, A., Piatkowski, Uwe , Santos, A.M.P. and Cabral, H. (2009) Distribution of cephalopod paralarvae in relation to the regional oceanography of the western Iberia. Journal of Plankton Research, 31 (1). pp. 73-91. DOI 10.1093/plankt/fbn103.

[img] Text
2009 Moreno_etal_JPlanktRes31.pdf - Published Version
Restricted to Registered users only

Download (1121Kb) | Contact

Supplementary data:

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.

Document Type: Article
Keywords: Ichthyology; TODAROPSIS-EBLANAE CEPHALOPODA; WINTER UPWELLING EVENT; SQUID LOLIGO-VULGARIS; EARLY-LIFE STAGES; REPRODUCTIVE-BIOLOGY; OCTOPUS-VULGARIS; ILLEX-COINDETII; NORTH-ATLANTIC; ENVIRONMENTAL-INFLUENCES; VERTICAL-DISTRIBUTION
Research affiliation: OceanRep > GEOMAR > FB3 Marine Ecology > FB3-EV Marine Evolutionary Ecology
OceanRep > The Future Ocean - Cluster of Excellence
Refereed: Yes
Open Access Journal?: No
DOI etc.: 10.1093/plankt/fbn103
ISSN: 0142-7873
Projects: Future Ocean
Date Deposited: 15 Dec 2008 09:46
Last Modified: 22 Jan 2019 14:18
URI: http://oceanrep.geomar.de/id/eprint/7625

Actions (login required)

View Item View Item

Document Downloads

More statistics for this item...