Nutrient limitation affects biofilm enzymatic activities in a glacier-fed river

In the Patagonian Andes, glaciers of Tronador Mountain are headwaters of Manso River that drains glacial waters into Lake Mascardi. The river receives different tributaries that differ in turbidity and canopy. In this scenario we performed a field study to elucidate the effect of the input of tribut...

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Autores principales:	Martyniuk, Nicolas, Souza, Maria Sol, Bastidas Navarro, Marcela, Balseiro, Esteban, Modenutti, Beatriz
Formato:	conjunto de datos other acceptedVersion
Lenguaje:	Inglés
Publicado:	Springer Nature 2022
Materias:	β-Glucosidase Alkaline phosphatase Attached communities Glacier systems Stream Ecological stoichiometry Ciencias de la Tierra y Medio Ambiente
Acceso en línea:	http://rdi.uncoma.edu.ar/handle/uncomaid/16659
Aporte de:	Repositorio Institucional UNCo de Universidad Nacional del Comahue

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record_format	dspace
institution	Universidad Nacional del Comahue
institution_str	I-22
repository_str	R-178
collection	Repositorio Institucional UNCo
language	Inglés
topic	β-Glucosidase Alkaline phosphatase Attached communities Glacier systems Stream Ecological stoichiometry Ciencias de la Tierra y Medio Ambiente
spellingShingle	β-Glucosidase Alkaline phosphatase Attached communities Glacier systems Stream Ecological stoichiometry Ciencias de la Tierra y Medio Ambiente Martyniuk, Nicolas Souza, Maria Sol Bastidas Navarro, Marcela Balseiro, Esteban Modenutti, Beatriz Nutrient limitation affects biofilm enzymatic activities in a glacier-fed river
topic_facet	β-Glucosidase Alkaline phosphatase Attached communities Glacier systems Stream Ecological stoichiometry Ciencias de la Tierra y Medio Ambiente
description	In the Patagonian Andes, glaciers of Tronador Mountain are headwaters of Manso River that drains glacial waters into Lake Mascardi. The river receives different tributaries that differ in turbidity and canopy. In this scenario we performed a field study to elucidate the effect of the input of tributary streams on the elemental limitation of the biofilm of the main glacier-fed river. We analyzed through general additive models and standardized major axis regressions the activities of two extracellular enzymes, β- glucosidase (GLU) and alkaline phosphatase (APA). We hypothesized that their ratio would reflect stoichiometric constraints to changes in the relative availability of carbon and phosphorus due to tributary streams’ influence. Along the glacier-fed river, we observed a decrease in the glacial influence and a spatial shift in P and dissolved organic carbon availability, that affected biofilm enzymatic activity. High enzymatic activity of GLU and APA in biofilm was related to low nutrient fluxes in stream water. In addition, the analysis of GLU and APA showed a switch in elemental limitation from Climitation in headwaters to P-limitation downstream. Finally, our results showed that biofilm enzymatic activity is a good ecological indicator to analyze changes in glacier retreat and their consequences in glacier-fed streams.
format	conjunto de datos other acceptedVersion
author	Martyniuk, Nicolas Souza, Maria Sol Bastidas Navarro, Marcela Balseiro, Esteban Modenutti, Beatriz
author_facet	Martyniuk, Nicolas Souza, Maria Sol Bastidas Navarro, Marcela Balseiro, Esteban Modenutti, Beatriz
author_sort	Martyniuk, Nicolas
title	Nutrient limitation affects biofilm enzymatic activities in a glacier-fed river
title_short	Nutrient limitation affects biofilm enzymatic activities in a glacier-fed river
title_full	Nutrient limitation affects biofilm enzymatic activities in a glacier-fed river
title_fullStr	Nutrient limitation affects biofilm enzymatic activities in a glacier-fed river
title_full_unstemmed	Nutrient limitation affects biofilm enzymatic activities in a glacier-fed river
title_sort	nutrient limitation affects biofilm enzymatic activities in a glacier-fed river
publisher	Springer Nature
publishDate	2022
url	http://rdi.uncoma.edu.ar/handle/uncomaid/16659
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bdutipo_str	Repositorios
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Nutrient limitation affects biofilm enzymatic activities in a glacier-fed river

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