Epipsammic diatoms in streams influenced by urban pollution, São Carlos, SP, Brazil

Autor:	T. Bere, JG. Tundisi
Jazyk:	angličtina
Předmět:	diatom communities pollution environmental gradients biological monitoring Science Biology (General) QH301-705.5 Zoology QL1-991 Botany QK1-989
Zdroj:	Brazilian Journal of Biology, Vol 70, Iss 4, Pp 920-930
Druh dokumentu:	article
ISSN:	1678-4375 1519-6984
DOI:	10.1590/S1519-69842010000500002
Popis:	Epipsammic diatoms have important implications for ecosystem processes in lotic environments. Most of the studies on benthic diatoms concentrate on epilithic diatoms and very little is known about epipsammic diatoms. The objective of this study was to assess epipsammic diatom communities in streams in relation to environmental conditions. Epipsammic diatoms and water quality sampling was done at 7 sites during summer base flow period (2008). Forward stepwise multiple regression and canonical correspondence analysis (CCA) were used to determine environmental gradients along which species vary with physical and chemical variables. A total of 112 diatom species distributed among 44 genera were recorded. Altitude and the process of eutrophication played a significant role in structuring diatom communities in the study region.
Databáze:	Directory of Open Access Journals
Externí odkaz:	https://doaj.org/article/cba0716323f9430e9658d75bd6c5a78f Zobrazit plný text záznamu View record in DOAJ