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The Diatom Anorthoneis dulcis Hein from Southern Brazil: Morphology and Ecology

Author(s): Garcia Marinês | Talgatti Dávia Marciana

Journal: Research Letters in Ecology
ISSN 1687-6768

Volume: 2008;
Date: 2008;
Original page

A new geographic locality for Anorthoneis dulcis is reported. The paper describes the distribution and relative abundance of A. dulcis in Lagoa dos Patos lagoon (a lagoon in Rio Grande do Sul state, Brazil) from samples collected between 2004 and 2005, and shows that this rare species is present all year round. This study extends the species distribution to South America indicating that the species can thrive on sand grains in lentic estuarine, and freshwater areas. It widens the range of tolerance to environmental parameters. The valve fine structure, morphology, and dimensions are in agreement with the original diagnosis.
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