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Acta amaz ; 32(4)2002.
Article in English | LILACS-Express | LILACS, VETINDEX | ID: biblio-1454911

ABSTRACT

This research was carried out in three of the most important basins of the Colombian Amazon (Upper Solimões, Iça and Japurá Rivers). The creeks and lakes that were studied contain abundant diatom species, particularly those of the genus Eunotia. Ten species are described; five of them are registered for the first time in the Amazon basin, and six in all of Colombia. All taxa were photographed with scanning electron microscopy. Fine valve morphology of E. anamargariate, E. pseudoindica, E. triodon, and E. zydodon var. compacta is described for the first time.


O trabalho realizou-se nas três bacias mais importantes da Amazônia Colombiana (Alto Solimões, Içá e Japurá). Os igarapés e lagos estudados apresentam alta riqueza de diatomáceas, principalmente do gênero Eunotia. Foram descritas 10 espécies e, pela primeira vez, a morfologia das valvas de E. anamargaritae, E. pseudoindica, E. triodon e E. zydodon var. compacta, foram descritas ao microscópio eletrônico. Dentre as espécies de Eunotia, encontradas no presente estudo, seis são primeiras citações para a Colômbia e cinco para a região amazônica.

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