Changing Water Chemistry in One Thousand Norwegian Lakes During Three Decades of Cleaner Air and Climate Change

Global Biogeochemical Cycles, Год журнала: 2023, Номер 37(2)

Опубликована: Янв. 18, 2023

Abstract We present long‐term changes in Norwegian lake water quality across regional gradients atmospheric pollution, air temperature, hydrology, and vegetation using (a) a national representative survey carried out 1995 2019 (ThousandLakes), (b) an annual from acid‐sensitive catchments (78 lakes, TrendLakes) 1990 to 2020. Our analysis encompasses all major chemical constituents, for example, anions cations, dissolved organic matter (DOM), nutrients, iron (Fe), silicate (SiO 2 ). During these decades, environmental included declines sulfur (S) nitrogen (N) deposition, climate warming, increase forest biomass. Strong recovery acidification is found, attributed large reductions moderated by catchment processing land use change. Browning counteracted some regions, while Ca increased unexpectedly. suggest that weathering, enhanced terrestrial productivity, important driver of Ca—substantiated widespread, substantial increases SiO . Light‐ nutrient‐limitation has become more prevalent, indicated higher DOM, lower nitrate (NO 3 ), NO total phosphorous ratios. Declines occurred independently N suggesting retention, possibly productivity. conclude decreased pollution continues be dominant trends chemistry, but climate‐induced weathering processes, governed biomass, likely have increasing impact on future acidity, nutrient, light status, may cascade along the aquatic continuum rivers coast.

Язык: Английский

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Chemical characteristics of long-term acid rain and its impact on lake water chemistry: A case study in Southwest China

Journal of Environmental Sciences, Год журнала: 2023, Номер 138, С. 121 - 131

Опубликована: Апрель 3, 2023

Язык: Английский

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First Assessment of Freshwater Monitoring Under the Eu National Emission Ceilings Directive: Emerging Issues and Way Forward

Water Air & Soil Pollution, Год журнала: 2025, Номер 236(3)

Опубликована: Фев. 25, 2025

Язык: Английский

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Recovery of trace elements in sediments from the alpine mountain stream affected by a severe flash flood in the Tatra Mountains

Environmental Earth Sciences, Год журнала: 2025, Номер 84(8)

Опубликована: Апрель 1, 2025

Язык: Английский

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The influence of atmospheric deposition and climate change driven catchment internal processes on the recovery from acidification of high-altitude Alpine lakes

The Science of The Total Environment, Год журнала: 2024, Номер 930, С. 172699 - 172699

Опубликована: Апрель 25, 2024

Язык: Английский

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Effect of Human Mobility Changes due to COVID-19 on Stream Water Quality in Watersheds with Different Predominant Land Uses

Journal of Water Resources Planning and Management, Год журнала: 2023, Номер 149(10)

Опубликована: Июль 27, 2023

The unprecedented changes in human mobility the United States during novel coronavirus (COVID-19) pandemic provided a unique opportunity to relate urban stream water quality intensity of activity on six types land use. This study evaluated baseflow-dominated response pH, total nitrogen (TN), and nitrate-nitrogen between five in-stream sampling sites located four watersheds with different degrees development Delaware County, Pennsylvania before COVID-19 (2018 2021). investigation found that significant coincided dramatic declines pandemic. Human was quantified using county-level volunteer reports use Google apps electronic devices. A two-way analysis variance identified TN, at all locations monthly flow decline movement activity. However, limited pre-pandemic design did not observe overall trends for interaction lack could suggest due restrictions impacted across least similar fashion. definitive evidence cell phone tracking can identify some impact nonpoint sources spatially dynamically, highlighting role political socio-economic factors activities might be reflected changes.

Язык: Английский

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Study on the flocculation mechanism of a bioflocculant from Acinetobacter sp. TH40 combined with graphene oxide for the removal of metal ions from water

Environmental Science and Pollution Research, Год журнала: 2023, Номер 30(33), С. 79835 - 79845

Опубликована: Июнь 8, 2023

Язык: Английский

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Interpreting Seasonal Patterns and Long-Term Changes of Zooplankton in a Deep Subalpine Lake Using Stable Isotope Analysis

Water, Год журнала: 2023, Номер 15(17), С. 3143 - 3143

Опубликована: Сен. 2, 2023

The purpose of this study was to elucidate the patterns and mechanisms driving seasonal interannual variations carbon nitrogen stable isotopes in zooplankton crustacean community Lake Maggiore (Italy), during period 2009–2020. Different taxa groups showed different ranges δ13C signatures, giving an insight into food sources niche partition. In particular, cyclopoids had a restricted range with more negative δ13C‰ values increase fractionation establishment water thermal vertical stratification, highlighting importance distribution as key factor for coexistence vertically heterogenous environment. Daphnia were positively related temperature (R2 = 0.58 p < 0.0001 R2 0.68 0.0001, respectively), signature chlorophyll 0.32, 0.0001). Decomposition time-series data signatures environmental parameters identified increasing trends temperature, conductivity decrease nitrate that matched changes isotopic some (Bosmina, Diaptomids). Overall, observed interpreted integrations effects climate warming Maggiore, affecting both availability conditions.

Язык: Английский

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Changes in physicochemical parameters of the alpine/mountain stream influenced by summer flash flood in Tatra Mountains (Western Carpathians)

Environmental Monitoring and Assessment, Год журнала: 2024, Номер 196(7)

Опубликована: Июнь 24, 2024

Abstractta Changes to the physicochemical parameters of water in alpine/mountain streams can provide evidence ongoing natural and anthropogenic processes their catchment. In this study, we analysed a mountain stream (Javorinka) on north-eastern side Tatra Mountains (Western Carpathians), which is minimally influenced by human activity. The was monitored weekly for 5 years (2017–2021) evaluated its seasonal variations parameters. These were large summer flash flood July 2018. We hypothesise that floods are essential oligotrophic profile streams. To support idea, our main objective compare trends before after or periods high flow. found hypothesis. For example, there significant decrease chemical consumption oxygen ammonia, and, conversely, an increase ratio saturated nitrate concentrations. Stream bed erosion also resulted increased phosphates (over next 2 years) enrichment dissolved solids spring. Interestingly outside objectives, observed sulphates, especially autumn 2020 2021, may be related suppressed emissions due restriction COVID-19 lockdown. changes therefore idea excellent indicators environmental processes, occasional system.

Язык: Английский

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Impacto del uso del suelo urbano en la calidad fisicoquímica del agua de escorrentía superficial en una cuenca urbana

Revista EIA, Год журнала: 2024, Номер 21(42)

Опубликована: Июль 1, 2024

Los crecientes procesos de expansión urbana han generado diversas alteraciones en las propiedades bioquímicas y físicas los sistemas hidrológicos cuencas, puesto que además modificar condiciones hidrológicas del territorio, incorporan múltiples contaminantes a cuerpos agua. De esta manera, la contaminación difusa resultante escorrentía aguas pluviales, es considerada como una principales causas degradación calidad agua fuentes receptoras zonas urbanas, lo cual particularmente relevante regiones lluviosas el trópico suramericano donde desarrollo gestión son poco planificados. Este artículo presenta resultados evaluación relación entre uso suelo escorrentía, considerando diferentes características lluvia. muestreos se realizaron ciudad Medellín, Colombia con diferente suelo. Se estudiaron parámetros básicos agua, algunas urbana. mostraron sólidos suspendidos totales presentaron alta variabilidad, especialmente zona residencial, ocasionando así complejidad control actividades allí desarrollan. Por otra parte, mayores niveles observados encontraron industrial, presencia coberturas muy baja o nula permeabilidad aumento actividad antrópica generan fuerte alteración escorrentía. Estos abren puerta cuestionamientos cuanto al impacto composición química pluviales promueven mejor comprensión superficial por ende visión más completa interacciones presentan un ecosistema urbano, estableciendo herramienta clave para hídrica cuencas urbanas.

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