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Abstract:

We studied the composition and density of the algae of the littoral epilithon and the taxa turnover in nine lentic water bodies at Hope Bay, Antarctic Peninsula, during summer 2002. At each site we measured the main physical and chemical variables, and took epilithic samples for the algal analysis. Two composed samples (one for qualitative and one for quantitative analysis) were taken randomly about 1 m away from the shore-line of each sampling site. The morphology of the algal mats could be included in the 'moat and pond type' in which Cyanobacteria are well represented. A total of 69 algal taxa were recorded in the whole study area. Chlorophyceae showed the highest taxa richness (33%), followed by Cyanobacteria (29%), Bacillariophyceae (26%), Chrysophyceae (10%), and Tribophyceae (2%). As a result of the redundancy analysis performed, we found that the number, composition, and density of taxa in the water bodies at Hope Bay were strongly influenced by nitrate and suspended solids concentrations and by the distance from the sea. The geographical trend in taxa turnover within Hope Bay was explained by elements from the combination of the metapopulation dynamics and the continuum theories, which are related to dispersal limitation and environmental heterogeneity, respectively. © Springer-Verlag 2006.

Registro:

Documento: Artículo
Título:Algal structure of the littoral epilithon in lentic water bodies at Hope Bay, Antarctic Peninsula
Autor:Bonaventura, S.M.; Vinocur, A.; Allende, L.; Pizarro, H.
Filiación:Depto. Ecología, Genética Y Evolución, FCEyN, Universidad de Buenos Aires, C1428EHA Buenos Aires, Argentina
Consejo Nacional de Investigaciones Científicas Y Técnicas (CONICET), Buenos Aires, Argentina
Palabras clave:algal community; dispersal; environmental change; epilithon; lentic environment; littoral environment; population density; structural analysis; taxonomy; Antarctic Peninsula; Antarctica; Hope Bay; West Antarctica; algae; Bacillariophyceae; Chlorophyceae; Chrysophyceae; Cyanobacteria; Xanthophyceae
Año:2006
Volumen:29
Número:8
Página de inicio:668
Página de fin:680
DOI: http://dx.doi.org/10.1007/s00300-005-0104-3
Título revista:Polar Biology
Título revista abreviado:Polar Biol.
ISSN:07224060
CODEN:POBID
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07224060_v29_n8_p668_Bonaventura

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Citas:

---------- APA ----------
Bonaventura, S.M., Vinocur, A., Allende, L. & Pizarro, H. (2006) . Algal structure of the littoral epilithon in lentic water bodies at Hope Bay, Antarctic Peninsula. Polar Biology, 29(8), 668-680.
http://dx.doi.org/10.1007/s00300-005-0104-3
---------- CHICAGO ----------
Bonaventura, S.M., Vinocur, A., Allende, L., Pizarro, H. "Algal structure of the littoral epilithon in lentic water bodies at Hope Bay, Antarctic Peninsula" . Polar Biology 29, no. 8 (2006) : 668-680.
http://dx.doi.org/10.1007/s00300-005-0104-3
---------- MLA ----------
Bonaventura, S.M., Vinocur, A., Allende, L., Pizarro, H. "Algal structure of the littoral epilithon in lentic water bodies at Hope Bay, Antarctic Peninsula" . Polar Biology, vol. 29, no. 8, 2006, pp. 668-680.
http://dx.doi.org/10.1007/s00300-005-0104-3
---------- VANCOUVER ----------
Bonaventura, S.M., Vinocur, A., Allende, L., Pizarro, H. Algal structure of the littoral epilithon in lentic water bodies at Hope Bay, Antarctic Peninsula. Polar Biol. 2006;29(8):668-680.
http://dx.doi.org/10.1007/s00300-005-0104-3