NDLI: Evaluación del fitoplancton y la calidad del agua de un arroyo subtropical del Noroeste Argentino

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Evaluación del fitoplancton y la calidad del agua de un arroyo subtropical del Noroeste Argentino

Content Provider	Semantic Scholar
Author	Taboada, María De Los Ángeles Marco, Silvia N. Martínez De Alderete, Mariela Del Carmen Gultemirian, María De Lourdes Tracanna, Beatriz C.
Copyright Year	2018
Abstract	The Calimayo stream is part of the Sali river basin, the main fluvial network in the region. This lotic system was recognized for its great biodiversity. The settlement of a paper industry altered its ecological conditions due to the production of polluting effluents. The aim of this study was to analyze the phytoplankton of the Calimayo stream in relation to water quality. Sampling was done under a seasonal basis from Winter 2012 to Autumn 2013 at three sites S1, S2, and S3. Environmental and biological samples were collected following standard procedures. The highest values of temperature, pH and electric conductivity were registered in sites S2 and S3. Site S1 had the maximum values of dissolved oxygen and the lower biochemical oxygen demand. Diatoms excelled qualitatively and quantitatively among the other algal groups. Redundancy analysis (RDA) allowed to differentiate two phytoplanktonic groups related to abiotic variables. Site S1 was influenced by seasonality, relief, lithology and physicochemistry of water, denoting good ecological conditions. At S2 and S3 the phycoflora was affected by the trophic state of the water and the pollutants, which caused a notable deterioration of water quality and phytoplankton. Phytoplankton resulted to be a good indicator of the ecological conditions of this lotic system. We can affirm that the limnological conditions of the Calimayo stream from the 90s to the present have been degraded to the presence of industrial effluents.
Starting Page	135
Ending Page	155
Page Count	21
File Format	PDF HTM / HTML
DOI	10.30972/bon.2723536
Volume Number	27
Alternate Webpage(s)	http://revistas.unne.edu.ar/index.php/bon/article/download/3536/3175
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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