High-resolution temporal variations of nitrate in a high-elevation pond in alpine tundra (NW Italian Alps) DOI Creative Commons
Nicola Colombo, Raffaella Balestrini, Danilo Godone

et al.

CATENA, Journal Year: 2023, Volume and Issue: 235, P. 107635 - 107635

Published: Nov. 5, 2023

High-resolution temporal measurements in remote, high-elevation surface waters are required to better understand the dynamics of nitrate (NO3−) response changes meteoclimatic conditions. This study reports on first use a UV–Vis submersible spectrophotometric probe (UV–Vis probe) measure hourly concentration nitrogen (NO3−-N) pond located at 2722 m a.s.l. an alpine tundra area (NW Italian Alps), during two snow-free seasons (July–October) 2014 and 2015. Weekly analyses NO3−-N stable isotopes water (δ18O δ2H), together with continuous meteorological, temperature, turbidity measurements, were performed over same period. The integration in-situ weekly samples allowed depicting role summer precipitation, snow melt, temperature (air water) influencing NO3− dynamics. Short-duration meteorological events (e.g., storms rain-on-snow events) produced rapid variations in-pond concentration, i.e., fivefold increase 18 h, that would not be detectable using traditional manual collection discrete samples. observed seasonal variability negatively correlated highlighted important biological processes leading enhanced N uptake lowest warmer periods. occurrence heavy rainfall critically altered expected trends, increasing supply pond. comparison years characterised by extremely different conditions us obtain insights potential effects climate high air rainfalls, sensitive aquatic ecosystems as ponds.

Language: Английский

Evaluating water quality of rock glacier outflows in the Western Alps, Italy: a regional perspective DOI
Michela Rogora,

Paola Giacomotti,

Arianna Orrù

et al.

Environmental Monitoring and Assessment, Journal Year: 2024, Volume and Issue: 196(11)

Published: Oct. 24, 2024

Language: Английский

Citations

0
High-resolution temporal variations of nitrate in a high-elevation pond in alpine tundra (NW Italian Alps) DOI Creative Commons
Nicola Colombo, Raffaella Balestrini, Danilo Godone

et al.

CATENA, Journal Year: 2023, Volume and Issue: 235, P. 107635 - 107635

Published: Nov. 5, 2023

High-resolution temporal measurements in remote, high-elevation surface waters are required to better understand the dynamics of nitrate (NO3−) response changes meteoclimatic conditions. This study reports on first use a UV–Vis submersible spectrophotometric probe (UV–Vis probe) measure hourly concentration nitrogen (NO3−-N) pond located at 2722 m a.s.l. an alpine tundra area (NW Italian Alps), during two snow-free seasons (July–October) 2014 and 2015. Weekly analyses NO3−-N stable isotopes water (δ18O δ2H), together with continuous meteorological, temperature, turbidity measurements, were performed over same period. The integration in-situ weekly samples allowed depicting role summer precipitation, snow melt, temperature (air water) influencing NO3− dynamics. Short-duration meteorological events (e.g., storms rain-on-snow events) produced rapid variations in-pond concentration, i.e., fivefold increase 18 h, that would not be detectable using traditional manual collection discrete samples. observed seasonal variability negatively correlated highlighted important biological processes leading enhanced N uptake lowest warmer periods. occurrence heavy rainfall critically altered expected trends, increasing supply pond. comparison years characterised by extremely different conditions us obtain insights potential effects climate high air rainfalls, sensitive aquatic ecosystems as ponds.

Language: Английский

Citations

0