Hydrological and physico - chemical dynamics in two Andean streams

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Fil: Sosnovsky, Alejandro. Universidad Nacional del Comahue. Grupo de Evaluación y Manejo de Recursos Ícticos (INIBIOMA). San Carlos de Bariloche, Río Negro, Argentina.

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Autores principales: Sosnovsky, Alejandro, Rechencq, Magalí, Fernández, María Valeria, Suárez, María José, Cantet, Rodolfo Juan Carlos
Formato: article Artículo publishedVersion
Lenguaje:Inglés
Publicado: 2020
Materias:
PATAGONIA
DISCHARGE
ELECTRICAL CONDUCTIVITY
HYDROLOGICAL PERIODS
Acceso en línea:http://ri.agro.uba.ar/greenstone3/library/collection/arti/document/2020sosnovsky
Aporte de:
FAUBA Digital - Facultad de Agronomía (UBA) de Universidad de Buenos Aires
id snrd:2020sosnovsky
record_format dspace
spelling snrd:2020sosnovsky2021-10-15T16:56:07Z Sosnovsky, Alejandro Rechencq, Magalí Fernández, María Valeria Suárez, María José Cantet, Rodolfo Juan Carlos 2020 Fil: Sosnovsky, Alejandro. Universidad Nacional del Comahue. Grupo de Evaluación y Manejo de Recursos Ícticos (INIBIOMA). San Carlos de Bariloche, Río Negro, Argentina. Fil: Rechencq, Magalí. Universidad Nacional del Comahue. Grupo de Evaluación y Manejo de Recursos Ícticos (INIBIOMA). San Carlos de Bariloche, Río Negro, Argentina. Fil: Fernández, María Valeria. Universidad Nacional del Comahue. Grupo de Evaluación y Manejo de Recursos Ícticos (INIBIOMA). San Carlos de Bariloche, Río Negro, Argentina. Fil: Suárez, María José. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Producción Animal. Buenos Aires, Argentina. Fil: Cantet, Rodolfo Juan Carlos. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Producción Animal. Buenos Aires, Argentina. Hydrological and physico-chemical dynamics in two Andean streams Discharge (Q) is an essential variable to understand how fluvial ecosystems function. To this aim, we assessed the hydrological and physico-chemical dynamics of two contrasting streams in Andean Patagonia: Casa de Piedra (CP) and Gutiérrez (G). CP originates in a small lake (0.15 km2) situated at high-elevation, whereas the source of G is a large (17 km2) piedmont lake. There are other differences between the drainage basins of these streams: CP drainage basin covers 63 km2 and slopes steep (33.9 m/km), while that of G is bigger (162 km2) and gentler (5.9 m/km). The current research was carried out over a period of 1 year. Variables measured were precipitation and temperature, as well as hydrological data (Q = discharge, EC = electrical conductivity, water temperature, turbidity and pH). The climate and topography of the region led to 3 distinct hydrological periods: stormflow, meltflow and baseflow. Discharge presented a clear seasonal pattern with higher values at meltflow, due to snow melting from the mountains. Stream CP was very flashy (high variation in flow regime), unlike stream G. The greatest flashiness was observed during the stormflow period. Baseflow was characterised by low values of Q. The temperature of water fluctuated between the different hydrological periods and between the study streams, whereas pH varied seasonally only. Great turbidity in the streams was observed during the stormflow period, as a result of high run-off. Throughout the year, the relation between Q and EC in CP revealed different hydrological flowpaths towards the stream: flows derived from melting snow, lateral flows through the landscape and groundwater flows. In contrast, EC in stream G was high and constant during the whole recording period, independently of Q. This indicates that the large headwater lake is its main source of water. This lake clearly affected the physico-chemical dynamics of stream G. In brief, the current research brought new knowledge into the ecological aspects of hydrological processes acting on the Andean-Patagonian aquatic ecosystems. On the basis of the results presented here and on expected future trends, we believe that the hydrological and physico-chemical dynamics of these ecosystems will be highly affected by climate change. grafs., tbls., mapas application/pdf 10.23818/limn.39.02 0213-8409 http://ri.agro.uba.ar/greenstone3/library/collection/arti/document/2020sosnovsky eng info:eu-repo/semantics/openAccess openAccess http://ri.agro.uba.ar/greenstone3/library/page/biblioteca#section4 Limnetica Vol.39, no.1 17-33 https://www.limnetica.com PATAGONIA DISCHARGE ELECTRICAL CONDUCTIVITY HYDROLOGICAL PERIODS Hydrological and physico - chemical dynamics in two Andean streams article info:eu-repo/semantics/article info:ar-repo/semantics/artículo publishedVersion info:eu-repo/semantics/publishedVersion
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-140
collection FAUBA Digital - Facultad de Agronomía (UBA)
language Inglés
orig_language_str_mv eng
topic PATAGONIA
DISCHARGE
ELECTRICAL CONDUCTIVITY
HYDROLOGICAL PERIODS
spellingShingle PATAGONIA
DISCHARGE
ELECTRICAL CONDUCTIVITY
HYDROLOGICAL PERIODS
Sosnovsky, Alejandro
Rechencq, Magalí
Fernández, María Valeria
Suárez, María José
Cantet, Rodolfo Juan Carlos
Hydrological and physico - chemical dynamics in two Andean streams
topic_facet PATAGONIA
DISCHARGE
ELECTRICAL CONDUCTIVITY
HYDROLOGICAL PERIODS
description Fil: Sosnovsky, Alejandro. Universidad Nacional del Comahue. Grupo de Evaluación y Manejo de Recursos Ícticos (INIBIOMA). San Carlos de Bariloche, Río Negro, Argentina.
format article
Artículo
Artículo
publishedVersion
publishedVersion
author Sosnovsky, Alejandro
Rechencq, Magalí
Fernández, María Valeria
Suárez, María José
Cantet, Rodolfo Juan Carlos
author_facet Sosnovsky, Alejandro
Rechencq, Magalí
Fernández, María Valeria
Suárez, María José
Cantet, Rodolfo Juan Carlos
author_sort Sosnovsky, Alejandro
title Hydrological and physico - chemical dynamics in two Andean streams
title_short Hydrological and physico - chemical dynamics in two Andean streams
title_full Hydrological and physico - chemical dynamics in two Andean streams
title_fullStr Hydrological and physico - chemical dynamics in two Andean streams
title_full_unstemmed Hydrological and physico - chemical dynamics in two Andean streams
title_sort hydrological and physico - chemical dynamics in two andean streams
publishDate 2020
url http://ri.agro.uba.ar/greenstone3/library/collection/arti/document/2020sosnovsky
work_keys_str_mv AT sosnovskyalejandro hydrologicalandphysicochemicaldynamicsintwoandeanstreams
AT rechencqmagali hydrologicalandphysicochemicaldynamicsintwoandeanstreams
AT fernandezmariavaleria hydrologicalandphysicochemicaldynamicsintwoandeanstreams
AT suarezmariajose hydrologicalandphysicochemicaldynamicsintwoandeanstreams
AT cantetrodolfojuancarlos hydrologicalandphysicochemicaldynamicsintwoandeanstreams
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