Diatomáceas epilíticas de sistemas lóticos na sub-bacia hidrográfica do Arroio Grande, Rio Grande do Sul, Brasil

IF 0.4 4区生物学 Q4 Agricultural and Biological Sciences

Iheringia Serie Botanica Pub Date : 2017-09-29 DOI:10.21826/2446-8231201772207

Juliana Ferreira da Silva, S. E. Salomoni, M. A. Oliveira, Sérgio Luiz de Oliveira Machado

引用次数: 4

Abstract

Epilithic diatoms are important components of freshwater periphyton. This study aimed to describe the composition and distribution of the epilithic diatom community in thirteen sampling sites in the Arroio Grande hydrographical sub-basin, RS, between October 2012 and March 2013. Samples were cleaned in oxygen peroxide and mounted on permanent slides for identifi cation. The diatom fl ora was composed of 106 species in 23 families and 41 genera. The most representative families and genera in taxa richness were Cymbellaceae (12 taxa), Naviculaceae (11), Sellaphoraceae (10), Gomphonema Ehreberg (10), Sellaphora Mereschkowsky, Nitzchia Hassall (seven), Navicula Bory, and Pinnularia C.G. Ehrenberg (six). Morphometric data for each species are presented. The upper reaches of the river basin presented greater specifi c richness than the lower stretches. This is the fi rst record of the diatom fl ora in this hydrographic basin.

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鳞硅藻是淡水藻周的重要组成部分。本研究旨在描述2012年10月至2013年3月期间RS Arroio Grande水文子盆地13个采样点的外鳞硅藻群落组成和分布。样品在过氧化氧中清洗，并安装在永久载玻片上进行鉴定。硅藻群由23科41属106种组成。分类群丰富度最具代表性的科属依次为Cymbellaceae(12个)、Naviculaceae(11个)、selaphora Ehreberg(10个)、Sellaphora Mereschkowsky、Nitzchia Hassall(7个)、Navicula Bory和Pinnularia C.G. Ehrenberg(6个)。介绍了每个物种的形态计量数据。流域上游比下游具有更高的特定丰富度。这是该水文盆地首次记录到硅藻群落。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Iheringia Serie Botanica PLANT SCIENCES-

CiteScore

0.70

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： The Iheringia, Série Botânica is a publication edited by the Museu de Ciências Naturais, Fundação Zoobotânica do Rio Grande do Sul, since 1958. The name Iheringia is actually a tribute to Hermann von Ihering (a German researcher who became a Brazilian citizen) and his important studies in the Natural Sciences.The journal has the mission of publishing articles, reviews and original scientific notes that cover diverse areas in Botany, and may be written in Portuguese, Spanish and English. The journal is widely available in both international and national scientific community. The issues are published and distributed twice a year to 118 national institutions and 152 international institutions. The distribution is either free of charge or by exchange. Impac Factor JCR 2014/2015 = 0.263 Qualis CAPES 2015: B 4 (Biodiversity) B1 (Agricultural Science I) B1 (Environment)