Micro-Catchments, Macro Effects: Natural Water Retention Measures in the Kylldal Catchment, Germany DOI Open Access

Silke M. Nauta,

M. J. Waterloo, Anouk Gevaert

и другие.

Water, Год журнала: 2024, Номер 16(5), С. 733 - 733

Опубликована: Фев. 29, 2024

Floods are among the most devastating and financially burdensome natural disasters in Europe. The combined impact of climate change land use is expected to exacerbate intensify destructive consequences river floods. In this study, we analysed effects wetland restoration on peak base flows water quality Kylldal catchment Kyll River German Middle Mountains using Soil Water Assessment Tool+ (SWAT+). Monthly median daily discharge increases varied between 3% 33% studied (micro)catchments. higher flow rates show that peaks were attenuated distributed over a longer period, making both extreme low less common. Peak tended decrease, with largest late fall early spring when values decreased by up 18%. annual maximum each three micro-catchments 12–24% average. occurrence average larger than 1 m3 s−1 was 45% lower after restoration. Low increased 21% 13% summer fall, respectively, which suggests drought risk also decreases Average nitrogen exports 38–50% project areas 20% at level. phosphorus 52–67% 25% study highlights potential for improving hydrological services, mitigating flood risks, enhancing quality. Restoring maintaining freshwater ecosystems their sponge functions crucial effectively managing resources addressing challenges posed changes.

Язык: Английский

Quantitative assessment of hydrological multifunctionality of headwater wetlands DOI
Yanfeng Wu,

Bingbo Ni,

Zhenshan Xue

и другие.

Journal of Hydrology, Год журнала: 2025, Номер unknown, С. 133113 - 133113

Опубликована: Март 1, 2025

Язык: Английский

Процитировано

0
Agricultural intensification in Lake Naivasha Catchment in Kenya and associated nutrients and pesticides pollution DOI Creative Commons
Joel Onyango, Nzula Kitaka,

J. J. A. van Bruggen

и другие.

Scientific Reports, Год журнала: 2024, Номер 14(1)

Опубликована: Авг. 9, 2024

Investments in agricultural intensification sub-Saharan Africa aim to fulfill food and economic demands. However, the increased use of fertilizers pesticides poses ecological risks water bodies catchments. This study focused on assessing impact nutrient pesticide pollution L. Naivasha catchment Kenya. The research revealed significant changes catchment's landscape between 1989 2019, driven by intensified expansion. As a result, emissions have worsened lake's trophic status, shifting it towards hypereutrophic conditions. found weak relationship total nitrogen (TN) sum dichlorodiphenyltrichloroethane (∑DDT), indicating that an increase TN slightly predicted reduction ∑DDT. Analysis also showed potential phosphorus (P) limitation lake. Additionally, observed ratio dichlorodiphenyldichloroethane dichlorodiphenyldichloroethylene (DDD:DDE) (DDE + DDD):DDT ratios suggest recent banned DDT catchment. concludes transformation shows unsustainable expansion with reduced forest cover, croplands, contamination. reflects common issue Africa, sustainable management must address, specifically for combined pollutants, support quality achieve SDGs agriculture.

Язык: Английский

Процитировано

0
Nutrient delivery by groundwater discharge to headwater streams in agricultural catchments DOI Creative Commons
Dale R. Van Stempvoort,

D. Ross MacKay,

Pamela Collins

и другие.

Hydrological Processes, Год журнала: 2022, Номер 36(10)

Опубликована: Окт. 1, 2022

Abstract Nutrient concentrations in riparian groundwater are variable from site to site, making it challenging use these data quantify nutrient fluxes contributed by discharge headwater streams. Instead, we define event‐excluded baseflow (BF EE ), and stream samples collected during BF estimate loading of nutrients the Based on this method, two study catchments (Thames River basin, Ontario, Canada) about 30% total streamflow 20%–30% soluble reactive phosphorus (SRP) nitrate. Previous estimates using hydrographic separation techniques indicate that likely contributes even larger fractions, ~50%–60% flow catchments. We infer ~40% annual SRP load ~ 50%–60% nitrate‐N load. These results plays an important role This reinforces findings earlier studies have inferred a dominant influence legacy reservoirs subsurface similar agricultural loads

Язык: Английский

Процитировано

2
Micro-Catchments, Macro Effects: Natural Water Retention Measures in the Kylldal Catchment, Germany DOI Open Access

Silke M. Nauta,

M. J. Waterloo, Anouk Gevaert

и другие.

Water, Год журнала: 2024, Номер 16(5), С. 733 - 733

Опубликована: Фев. 29, 2024

Floods are among the most devastating and financially burdensome natural disasters in Europe. The combined impact of climate change land use is expected to exacerbate intensify destructive consequences river floods. In this study, we analysed effects wetland restoration on peak base flows water quality Kylldal catchment Kyll River German Middle Mountains using Soil Water Assessment Tool+ (SWAT+). Monthly median daily discharge increases varied between 3% 33% studied (micro)catchments. higher flow rates show that peaks were attenuated distributed over a longer period, making both extreme low less common. Peak tended decrease, with largest late fall early spring when values decreased by up 18%. annual maximum each three micro-catchments 12–24% average. occurrence average larger than 1 m3 s−1 was 45% lower after restoration. Low increased 21% 13% summer fall, respectively, which suggests drought risk also decreases Average nitrogen exports 38–50% project areas 20% at level. phosphorus 52–67% 25% study highlights potential for improving hydrological services, mitigating flood risks, enhancing quality. Restoring maintaining freshwater ecosystems their sponge functions crucial effectively managing resources addressing challenges posed changes.

Язык: Английский

Процитировано

0