In:
Acta Botanica Brasilica, FapUNIFESP (SciELO), Vol. 25, No. 1 ( 2011-03), p. 130-140
Abstract:
Few studies have been done on the diatom flora of acidic and oligotrophic environments from Brazil. We present the taxonomic composition and distribution of diatoms of Salto River, situated at Ibitipoca State Park, Minas Gerais (21º40'-21º44'S; 43º52'-43º55'W). The pH values ranged from 4.2 to 5.5 and orthophosphate was between 1.37 and 10.98 µg.L-1. The study is based on the analysis of 80 samples collected at eight stations in the rocky stream bed, in January and July 2004, rainy and dry seasons, respectively. A total of 15 species and two taxonomic varieties distributed in eight genera and eight families were described and illustrated, notably the Eunotia Ehrenberg genus. The study of benthic diatoms in lotic systems is pioneer in Minas Gerais state; 14 new records were recorded of which Fragilariforma stevensonii Metzeltin & Lange-Bertalot,Eunotia pirarucu Metzeltin & Lange-Bertalot, Nupela giluwensis Vyverman & Compère and Sellaphora blackfordensis Mann & Droop are first records for Brazil.
Type of Medium:
Online Resource
ISSN:
0102-3306
DOI:
10.1590/S0102-33062011000100016
Language:
Unknown
Publisher:
FapUNIFESP (SciELO)
Publication Date:
2011
detail.hit.zdb_id:
2055440-0
SSG:
12
