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Salinity Effects on the Abundance of Boeckella Poopoensis (copepoda, Calanoida) in Saline Ponds in the Atacama Desert, Northern Chile

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[The calanoid copepod, Boeckella poopoensis Marsh, 1906 inhabits shallow saline ponds located in the Andes mountains in Argentina, Bolivia, Chile, and Peru, as well as in the plains of southern Argentina. The species is halophilic and can tolerate salinity levels of 1 to 90 ppt. This paper describes the relative abundance of the species in shallow mountain ponds in northern Chile from 23° to 27° S. A direct correlation was observed between salinity and the relative abundance of B. poopoensis (r2 = 0.4139), and between 45 and 90 ppt S the species was found to be dominant in zooplankton assemblages. Crustacean species richness at the sites studied showed a significant, inverse trend with salinity (r2 = 0.7329), and this trend became even stronger (r2 = 0.7681) when data previously published for the Bolivian Andean plateau were included. Ecological and biogeographical issues related with these results are discussed.

El copépodo calanoideo Boeckella poopoensis Marsh, 1906 vive en lagunas salinas poco profundas localizadas en el altiplano Andino de Argentina, Bolivia, Chile y Perú, y en el sur de Argentina. Esta especie es marcadamente halofílica, y tolera salinidades entre 1 y 90 g/l, estos hábitats tienen una pobre riqueza específica de crustáceos zooplanctónicos. Este estudio describe la abundancia relativa de esta especie en lagunas poco profundas de montaña en el norte de Chile, entre los 23 y 27 grados sur de latitud. Se observó una relación directa notoria entre la salinidad y la abundancia relativa de B. poopoensis (r2 = 0.4139), encontrándose prácticamente esta especie como habitante exclusivo a salinidades superiores entre 45 g/l y 90 g/l, lo que coincide con las descripciones de la literatura. La riqueza específica de especies de crustáceos presentó una relación inversa notoria con la salinidad en los sitios estudiados (r2 = 0.7329), lo cual fue más robusto al incorporar información publicada para el Altiplano de Bolivia (r2 = 0.7681). En este estudio se discutieron implicancias ecológicas y biogeográficas relacionadas con los resultados observados., The calanoid copepod, Boeckella poopoensis Marsh, 1906 inhabits shallow saline ponds located in the Andes mountains in Argentina, Bolivia, Chile, and Peru, as well as in the plains of southern Argentina. The species is halophilic and can tolerate salinity levels of 1 to 90 ppt. This paper describes the relative abundance of the species in shallow mountain ponds in northern Chile from 23° to 27° S. A direct correlation was observed between salinity and the relative abundance of B. poopoensis (r2 = 0.4139), and between 45 and 90 ppt S the species was found to be dominant in zooplankton assemblages. Crustacean species richness at the sites studied showed a significant, inverse trend with salinity (r2 = 0.7329), and this trend became even stronger (r2 = 0.7681) when data previously published for the Bolivian Andean plateau were included. Ecological and biogeographical issues related with these results are discussed.

El copépodo calanoideo Boeckella poopoensis Marsh, 1906 vive en lagunas salinas poco profundas localizadas en el altiplano Andino de Argentina, Bolivia, Chile y Perú, y en el sur de Argentina. Esta especie es marcadamente halofílica, y tolera salinidades entre 1 y 90 g/l, estos hábitats tienen una pobre riqueza específica de crustáceos zooplanctónicos. Este estudio describe la abundancia relativa de esta especie en lagunas poco profundas de montaña en el norte de Chile, entre los 23 y 27 grados sur de latitud. Se observó una relación directa notoria entre la salinidad y la abundancia relativa de B. poopoensis (r2 = 0.4139), encontrándose prácticamente esta especie como habitante exclusivo a salinidades superiores entre 45 g/l y 90 g/l, lo que coincide con las descripciones de la literatura. La riqueza específica de especies de crustáceos presentó una relación inversa notoria con la salinidad en los sitios estudiados (r2 = 0.7329), lo cual fue más robusto al incorporar información publicada para el Altiplano de Bolivia (r2 = 0.7681). En este estudio se discutieron implicancias ecológicas y biogeográficas relacionadas con los resultados observados.]

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/content/journals/10.1163/1568540041643328
2004-04-01
2016-12-07

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