Nutrient dynamics in temperate European catchments of different land use under changing climate

Study region: Vltava River basin, South Bohemian Region of the Czech Republic, Central Europe Study focus: To understand the dynamics of nutrients (nitrogen, phosphorus, and organic carbon) in streams, we combined hydrometeorological, hydrochemical and isotopic data (stable water and nitrate isotope...

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Main Authors: Y. Vystavna, M.C. Paule-Mercado, S.I. Schmidt, J. Hejzlar, P. Porcal, I. Matiatos
Format: Article
Language:English
Published: Elsevier 2023-02-01
Series:Journal of Hydrology: Regional Studies
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S2214581822003019
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author Y. Vystavna
M.C. Paule-Mercado
S.I. Schmidt
J. Hejzlar
P. Porcal
I. Matiatos
author_facet Y. Vystavna
M.C. Paule-Mercado
S.I. Schmidt
J. Hejzlar
P. Porcal
I. Matiatos
author_sort Y. Vystavna
collection DOAJ
description Study region: Vltava River basin, South Bohemian Region of the Czech Republic, Central Europe Study focus: To understand the dynamics of nutrients (nitrogen, phosphorus, and organic carbon) in streams, we combined hydrometeorological, hydrochemical and isotopic data (stable water and nitrate isotopes) from three catchments with different predominant land-use effects (forest, agricultural and settlement). New hydrological insights for the study region: Our study underlines that current climate change and associated hydrological changes, such as decrease in flow, play an important role in the transport and dynamics of nutrients in the catchment. We have found that due to the different origins and pathways, individual nutrients had diverse behaviour patterns in streams and responded differently to changing climate. Hydrological patterns in streams became clear when systematic and continuous monitoring under a changing climate was applied, highlighting the need for such data to better understand the impact of hydrological drivers, particularly for long-term dynamics. In three studied catchments, streamflow showed a decreasing trend in line with rising air temperature, declining snow cover and increasing evapotranspiration. Time series analyses of nitrate concentrations revealed decreasing trends, whereas dissolved organic carbon increased in all catchments regardless of land use. Long-term trends of total phosphorus concentrations were positive in anthropogenically impacted streams. Stable nitrate isotopes indicated distinct nitrate sources and processes, but also their seasonality in relation to hydrological patterns and land use.
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spelling doaj.art-71567c8978344477a2bd7734c2db08312023-01-22T04:39:16ZengElsevierJournal of Hydrology: Regional Studies2214-58182023-02-0145101288Nutrient dynamics in temperate European catchments of different land use under changing climateY. Vystavna0M.C. Paule-Mercado1S.I. Schmidt2J. Hejzlar3P. Porcal4I. Matiatos5Biology Centre of the Academy of Sciences of the Czech Republic, Institute of Hydrobiology, Na Sádkách 7, 37005 České Budějovice, Czech Republic; Corresponding author.Biology Centre of the Academy of Sciences of the Czech Republic, Institute of Hydrobiology, Na Sádkách 7, 37005 České Budějovice, Czech RepublicBiology Centre of the Academy of Sciences of the Czech Republic, Institute of Hydrobiology, Na Sádkách 7, 37005 České Budějovice, Czech RepublicBiology Centre of the Academy of Sciences of the Czech Republic, Institute of Hydrobiology, Na Sádkách 7, 37005 České Budějovice, Czech RepublicBiology Centre of the Academy of Sciences of the Czech Republic, Institute of Hydrobiology, Na Sádkách 7, 37005 České Budějovice, Czech Republic; University of South Bohemia in České Budějovice, Department of Ecosystem Biology, České Budějovice, Czech RepublicHellenic Centre for Marine Research, Institute of Marine Biological Resources and Inland Waters, 46.7 km of Athens-Sounio Ave., 19013 Anavyssos, Attiki, GreeceStudy region: Vltava River basin, South Bohemian Region of the Czech Republic, Central Europe Study focus: To understand the dynamics of nutrients (nitrogen, phosphorus, and organic carbon) in streams, we combined hydrometeorological, hydrochemical and isotopic data (stable water and nitrate isotopes) from three catchments with different predominant land-use effects (forest, agricultural and settlement). New hydrological insights for the study region: Our study underlines that current climate change and associated hydrological changes, such as decrease in flow, play an important role in the transport and dynamics of nutrients in the catchment. We have found that due to the different origins and pathways, individual nutrients had diverse behaviour patterns in streams and responded differently to changing climate. Hydrological patterns in streams became clear when systematic and continuous monitoring under a changing climate was applied, highlighting the need for such data to better understand the impact of hydrological drivers, particularly for long-term dynamics. In three studied catchments, streamflow showed a decreasing trend in line with rising air temperature, declining snow cover and increasing evapotranspiration. Time series analyses of nitrate concentrations revealed decreasing trends, whereas dissolved organic carbon increased in all catchments regardless of land use. Long-term trends of total phosphorus concentrations were positive in anthropogenically impacted streams. Stable nitrate isotopes indicated distinct nitrate sources and processes, but also their seasonality in relation to hydrological patterns and land use.http://www.sciencedirect.com/science/article/pii/S2214581822003019Isotope hydrologyWater chemistryForestAgricultureCentral Europe
spellingShingle Y. Vystavna
M.C. Paule-Mercado
S.I. Schmidt
J. Hejzlar
P. Porcal
I. Matiatos
Nutrient dynamics in temperate European catchments of different land use under changing climate
Journal of Hydrology: Regional Studies
Isotope hydrology
Water chemistry
Forest
Agriculture
Central Europe
title Nutrient dynamics in temperate European catchments of different land use under changing climate
title_full Nutrient dynamics in temperate European catchments of different land use under changing climate
title_fullStr Nutrient dynamics in temperate European catchments of different land use under changing climate
title_full_unstemmed Nutrient dynamics in temperate European catchments of different land use under changing climate
title_short Nutrient dynamics in temperate European catchments of different land use under changing climate
title_sort nutrient dynamics in temperate european catchments of different land use under changing climate
topic Isotope hydrology
Water chemistry
Forest
Agriculture
Central Europe
url http://www.sciencedirect.com/science/article/pii/S2214581822003019
work_keys_str_mv AT yvystavna nutrientdynamicsintemperateeuropeancatchmentsofdifferentlanduseunderchangingclimate
AT mcpaulemercado nutrientdynamicsintemperateeuropeancatchmentsofdifferentlanduseunderchangingclimate
AT sischmidt nutrientdynamicsintemperateeuropeancatchmentsofdifferentlanduseunderchangingclimate
AT jhejzlar nutrientdynamicsintemperateeuropeancatchmentsofdifferentlanduseunderchangingclimate
AT pporcal nutrientdynamicsintemperateeuropeancatchmentsofdifferentlanduseunderchangingclimate
AT imatiatos nutrientdynamicsintemperateeuropeancatchmentsofdifferentlanduseunderchangingclimate