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- Title
Variables fisicoquímicas del agua de Escaba, un embalse subtropical.
- Authors
Gultemirian, María de L.; Tracanna, Beatriz C.; Taboada, María de los A.; De Marco, Silvia N. Martínez; Mirande, Virginia; Isasmendi, Sara C.
- Abstract
The objective of this study is to characterize the physicochemical parameters present in the limnetic zone of the Escaba dam and the mouths of the tributaries to determine water quality. Seasonal samplings were carried out between August 2010 and May 2012. Temperature, transparency, pH and electrical conductivity were field measured, whereas dissolved oxygen, biochemical oxygen demand (BOD5), major ion constituents, and nitrogen and phosphorus compounds were analyzed in the laboratory. The water was classified as calcium-sodium bicarbonate type with neutral to alkaline pH, and thermal stratification during spring and summer. The water analyzed was well oxygenated except for that coming from the bottom of the limnetic zone during the summer months. The lowest transparency was measured in El Chorro River in November 2011 (0.12 m) and the highest degree of transparency was recorded in Singuil River during the winter of 2010 (4.1 m). The water conductivity ranged between 83 and 186 µS cm-1. Maximum BOD5 value (183 mg L-1) was measured in Singuil River in spring 2010. The highest values for the different nitrogen compounds were as follows: 7 mg NO3- L-1 at the bottom of the limnetic zone in August 2010, 0,07 mg NO2- L-1 in Las Moras River in May 2011 and 1.8 mg NH4 + L-1 in Chavarría River in March 2011. During the summer of 2012, orthophosphate reached a value of 0.22 mg L-1 at the bottom of the limnetic zone. The N/P ratio revealed that phosphorus was generally the limiting factor. Considering the N, P and transparency parameters, the ecosystem was classified as hypertrophic.
- Subjects
BIOCHEMICAL oxygen demand; WATER quality; ELECTRIC conductivity; PHOSPHORUS compounds; ORTHOPHOSPHATES; NITROGEN compounds; ORGANOPHOSPHORUS compounds
- Publication
Current Issues in Personality Psychology, 2022, Vol 10, Issue 2, p36
- ISSN
2353-4192
- Publication type
Article