Distribution and ecology of Pseudo-nitzschia species (Bacillariophyceae) in surface waters of the Weddell Sea (Antarctica)

The distribution of six Pseudo-nitzschia species and their relationship with environmental conditions were studied for the first time in a vast zone of the Weddell Sea (∼61-77°S, Antarctica). Both qualitative and quantitative phytoplankton samples, collected during summer 2004, were examined using l...

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Autor principal: Almandoz, G.O
Otros Autores: Ferreyra, G.A, Schloss, I.R, Dogliotti, A.I, Rupolo, V., Paparazzo, F.E, Esteves, J.L, Ferrario, M.E
Formato: Capítulo de libro
Lenguaje:Inglés
Publicado: 2008
Acceso en línea:Registro en Scopus
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Registro en la Biblioteca Digital
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100 1 |a Almandoz, G.O. 
245 1 0 |a Distribution and ecology of Pseudo-nitzschia species (Bacillariophyceae) in surface waters of the Weddell Sea (Antarctica) 
260 |c 2008 
270 1 0 |m Almandoz, G.O.; Facultad de Ciencias Naturales Y Museo, Universidad Nacional de La Plata, Paseo del Bosque s/n, (1900) La Plata, Argentina; email: galmandoz@fcnym.unlp.edu.ar 
506 |2 openaire  |e Política editorial 
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504 |a Almandoz, G.O., Ferrario, M.E., Ferreyra, G.A., Schloss, I.R., Esteves, J.L., Paparazzo, F.E., The genus Pseudo-nitzschia (Bacillariophyceae) in continental shelf waters of Argentina (Southwestern Atlantic Ocean, 38-55°S) (2007) Harmful Algae, 6, pp. 93-103 
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504 |a Holm-Hansen, O., Kahru, M., Hewes, C.D., Deep chlorophyll a maxima (DCMs) in pelagic Antarctic waters. II. Relation to bathymetric features and dissolved iron concentrations (2005) Mar Ecol Prog Ser, 297, pp. 71-81 
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520 3 |a The distribution of six Pseudo-nitzschia species and their relationship with environmental conditions were studied for the first time in a vast zone of the Weddell Sea (∼61-77°S, Antarctica). Both qualitative and quantitative phytoplankton samples, collected during summer 2004, were examined using light and scanning electron microscopy. Phytoplankton abundance and composition showed great variability along our study area. Diatoms were the most conspicuous phytoplankton group in the northern area while small flagellates were generally dominant in the southern stations. The genus Pseudo-nitzschia was broadly distributed and significantly contributed to total diatom densities. A marked contrast in Pseudo-nitzschia species distribution was observed in three main zones divided by the Weddell Front (WF) and the Antarctic Slope Front (ASF). P. subcurvata and P. turgiduloides were the most abundant species in the neritic Weddell Sea zone, south of the ASF, mainly near the ice-edge in shallower waters and in conditions of long photoperiod. In contrast, P. prolongatoides and P. lineola dominated north of the ASF; the first was associated with deeper and nutrient-rich waters whereas the latter showed a weak relation with environmental variables examined. Finally, P. turgidula and P. heimii were mostly observed in the Weddell-Scotia Confluence Zone in the warmest and far from ice covered waters, north of the WF. A brief morphological Pseudo-nitzschia species description is given in the Appendix, including morphometrics and pictures. © 2007 Springer-Verlag.  |l eng 
536 |a Detalles de la financiación: Universidad Nacional de La Plata, UNLP 
536 |a Detalles de la financiación: Consejo Nacional de Investigaciones Científicas y Técnicas 
536 |a Detalles de la financiación: Consejo Nacional de Investigaciones Científicas y Técnicas 
536 |a Detalles de la financiación: Instituto Antártico Argentino 
536 |a Detalles de la financiación: Agencia Nacional de Promoción Científica y Tecnológica, PICT 25509, PIP-5603, PICTO 6524/1108/03-ANPCyT 01–11563, PEI-2001 
536 |a Detalles de la financiación: Consejo Nacional de Investigaciones Científicas y Técnicas 
536 |a Detalles de la financiación: Consejo Nacional de Investigaciones Científicas y Técnicas 
536 |a Detalles de la financiación: G. O. Almandoz (&) · M. E. Ferrario Facultad de Ciencias Naturales y Museo, Universidad Nacional de La Plata, Paseo del Bosque s/n (1900), La Plata, Argentina e-mail: galmandoz@fcnym.unlp.edu.ar G. O. Almandoz · I. R. Schloss · A. I. Dogliotti · M. E. Ferrario CONICET, Consejo Nacional de Investigaciones Científicas y Técnicas, Av. Rivadavia 1917, 1033 Buenos Aires, Argentina 
536 |a Detalles de la financiación: Acknowledgments We wish to thank personnel from the Instituto Antártico Argentino (IAA), the Servicio de Hidrografía Naval and the crew of ‘‘Almirante Irizar’’ for their support during sampling, especially to A. Ulrich, R. Codina and C. Balestrini. We extend our gratitude to P. Sarmiento from the MEB service, Museo de La Plata and to A. Kehr for his assistance with statistics. Thanks are also due to M. Solis and M. Gil from the ‘‘Chemical Oceanographic and Water Pollution’’ laboratory (CENPAT-CONICET), for the analysis of nutrients. Finally we want to express our gratitude to Dr. G. Fryxell and other two anonymous referees for their detailed comments and corrections. This survey was supported from the IAA, the Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) and the Agencia Nacional de Promoción Científica y Tecnológica (AN-PCyT) through grants PIP-5603 CONICET and PICT 25509 ANPCyT to M. Ferrario, PEI-2001, CONICET, and PICTO 6524/1108/03-ANPCyT 01–11563 to I. Schloss. G.O. Almandoz and A.I. Dogliotti 
536 |a Detalles de la financiación: work was supported by a doctoral fellowship of the CONICET, Argentina. XBT data were collected in the context of the CANOPO project of the Italian Research Program in Antarctica (PNRA, http://clima.casaccia.enea.it/canopo). 
593 |a Facultad de Ciencias Naturales Y Museo, Universidad Nacional de La Plata, Paseo del Bosque s/n, (1900) La Plata, Argentina 
593 |a CONICET, Consejo Nacional de Investigaciones Científicas Y Técnicas, Av. Rivadavia 1917, Buenos Aires 1033, Argentina 
593 |a Instituto Antártico Argentino, Cerrito 1248, Ciudad de Buenos Aires 1010, Argentina 
593 |a Instituto de Astronomía Y Física del Espacio (IAFE-CONICET), Pabellón IAFE, Ciudad Universitaria, C.C. 67-sucursal 28, Buenos Aires 1428, Argentina 
593 |a Climate and Environmne Department, ENEA, Via Anguillarese 301, Rome 00123, Italy 
593 |a CENPAT-CONICET, Bv. Brown 3000, Puerto Madryn 9120, Argentina 
690 1 0 |a ANTARCTICA 
690 1 0 |a DIATOMS 
690 1 0 |a PHYTOPLANKTON DISTRIBUTION 
690 1 0 |a PSEUDO-NITZSCHIA 
690 1 0 |a WEDDELL SEA 
690 1 0 |a ABUNDANCE 
690 1 0 |a COMMUNITY COMPOSITION 
690 1 0 |a CONFLUENCE 
690 1 0 |a DIATOM 
690 1 0 |a ECOLOGY 
690 1 0 |a ENVIRONMENTAL CONDITIONS 
690 1 0 |a FLAGELLATE 
690 1 0 |a ICE COVER 
690 1 0 |a MORPHOLOGY 
690 1 0 |a MORPHOMETRY 
690 1 0 |a PHYTOPLANKTON 
690 1 0 |a SPATIAL DISTRIBUTION 
690 1 0 |a SPECIES-AREA RELATIONSHIP 
690 1 0 |a SURFACE WATER 
690 1 0 |a ANTARCTICA 
690 1 0 |a ATLANTIC OCEAN 
690 1 0 |a SCOTIA SEA 
690 1 0 |a SOUTHERN OCEAN 
690 1 0 |a WEDDELL SEA 
690 1 0 |a BACILLARIOPHYCEAE 
690 1 0 |a BACILLARIOPHYTA 
690 1 0 |a MASTIGOPHORA (FLAGELLATES) 
690 1 0 |a PSEUDO-NITZSCHIA 
700 1 |a Ferreyra, G.A. 
700 1 |a Schloss, I.R. 
700 1 |a Dogliotti, A.I. 
700 1 |a Rupolo, V. 
700 1 |a Paparazzo, F.E. 
700 1 |a Esteves, J.L. 
700 1 |a Ferrario, M.E. 
773 0 |d 2008  |g v. 31  |h pp. 429-442  |k n. 4  |p Polar Biol.  |x 07224060  |t Polar Biology 
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856 4 0 |u https://doi.org/10.1007/s00300-007-0369-9  |y DOI 
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