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El rol del frente de mareas de Península Valdés en el control de la comunidad zooplanctónica OceanDocs
Derisio, C..
The Península Valdés tidal front was studied in its rol in the control of the spatial distribution, abundance, assemblages, diversity and life histories of the zooplankton community using samples from two oceanographic surveys. Although the front showed in general high zooplankton abundances, highest values, mainly due to the presence of immature stages of copepods, were recorded in the transitional and stratified zones coinciding with highest values of chlorophyll a. The zooplankton groups showed a distinctive spatial distribution across the front. The results showed that this front did not exert any control on zooplankton composition and diversity, but did on the abundance. In the homogeneous zone the harpacticoid copepods were more abundant, followed by...
Tipo: Theses and Dissertations Palavras-chave: Zooplankton; Ecological associations; Oceanic fronts; Abundance; Species diversity; Hydrography; Vertical migrations; Copepoda; Cladocera; Marine environment.
Ano: 2012 URL: http://hdl.handle.net/1834/4777
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Monstrilloida (Crustacea: Copepoda) from the Beagle Channel, South America Naturalis
Suárez-Morales, E.; Ramírez, F.C.; Derisio, C..
Monstrilloid copepods were collected during zooplankton surveys in the Beagle Channel at the southernmost end of South America. These specimens represent two species of Monstrillopsis, one of them undescribed, and one new species of Monstrilla. Monstrillopsis igniterra n. sp. is related to forms of the M. dubia species group, and particularly to M. ferrarii and M. chilensis. It differs from these species in the relative length of the antennules, the shape and relative size of the genital double and anal somites, details of the antennular armature, and the possession of a short inner caudal seta. The other species of Monstrillopsis, M. chilensis, was previously known only from the Southeast Pacific off Chile, and was originally described from female...
Tipo: Article / Letter to the editor Palavras-chave: Associated copepoda; Marine zooplankton; Southern Ocean; Taxonomy; 42.74.
Ano: 2008 URL: http://www.repository.naturalis.nl/record/291893
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