volume 98, issue 4, P425-432 2008
DOI: 10.1590/s0073-47212008000400002
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Abstract: ABSTRACT. The taxonomic composition and diversity of assemblages of Ephemeroptera nymphs of four lotic environments in the central region of State of Rio Grande do Sul, a subtropical area in southern Brazil, were evaluated. Samplings were done monthly, with a Surber