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Abstract:

Contemporary eruptive episodes and present volcanic activity at Deception Island have created a mosaic of different environmental conditions. In this study, the microalgal communities inhabiting 18 sites differing in geology, degree of disturbance and physico-chemical features (texture, water, organic matter and nutrient contents) were characterized in terms of composition, species richness and biomass. One hundred and forty taxa were recorded, with richest communities associated with stable sites and some of the poorest ones in locations affected by recent eruptions. In accordance, a canonical correspondence analysis ordinated species and sites along the first axis according to the percentage of coarse particles, and degree of disturbance (eigenvalues 0.79 and 0.65, P = 0.04). Results of a cluster analysis grouped firstly those algal taxa with high fidelity to one set of environmental conditions, while "ubiquitous" ones had the lowest similarity values. These taxa, mainly filamentous Cyanobacteria and diatoms, are the only colonizers of harsher or recently formed environments. © 2007 Springer-Verlag.

Registro:

Documento: Artículo
Título:Soil microalgal communities on an antarctic active volcano (Deception Island, South Shetlands)
Autor:Fermani, P.; Mataloni, G.; Van De Vijver, B.
Filiación:Depto. de Ecología, Genética Y Evolución, Fac. de Cs. Exactas Y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
CONICET, Buenos Aires, Argentina
Department of Bryophytes and Thallophytes, National Botanic Garden of Belgium, Domein van Bouchout, 1860 Meise, Belgium
Palabras clave:Antarctica; Colonization; Community; Disturbance; Soil algae; biomass; canonical analysis; cluster analysis; community composition; cyanobacterium; diatom; disturbance; microalga; soil ecosystem; soil fauna; species richness; Antarctica; Deception Island; South Shetland Islands; algae; Bacillariophyta; Cyanobacteria
Año:2007
Volumen:30
Número:11
Página de inicio:1381
Página de fin:1393
DOI: http://dx.doi.org/10.1007/s00300-007-0299-6
Título revista:Polar Biology
Título revista abreviado:Polar Biol.
ISSN:07224060
CODEN:POBID
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07224060_v30_n11_p1381_Fermani

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Citas:

---------- APA ----------
Fermani, P., Mataloni, G. & Van De Vijver, B. (2007) . Soil microalgal communities on an antarctic active volcano (Deception Island, South Shetlands). Polar Biology, 30(11), 1381-1393.
http://dx.doi.org/10.1007/s00300-007-0299-6
---------- CHICAGO ----------
Fermani, P., Mataloni, G., Van De Vijver, B. "Soil microalgal communities on an antarctic active volcano (Deception Island, South Shetlands)" . Polar Biology 30, no. 11 (2007) : 1381-1393.
http://dx.doi.org/10.1007/s00300-007-0299-6
---------- MLA ----------
Fermani, P., Mataloni, G., Van De Vijver, B. "Soil microalgal communities on an antarctic active volcano (Deception Island, South Shetlands)" . Polar Biology, vol. 30, no. 11, 2007, pp. 1381-1393.
http://dx.doi.org/10.1007/s00300-007-0299-6
---------- VANCOUVER ----------
Fermani, P., Mataloni, G., Van De Vijver, B. Soil microalgal communities on an antarctic active volcano (Deception Island, South Shetlands). Polar Biol. 2007;30(11):1381-1393.
http://dx.doi.org/10.1007/s00300-007-0299-6