Reply on RC2 DOI Creative Commons

Maria Magdalena Warter

Published: July 24, 2024

Abstract. Flow regimes are increasingly impacted by more extreme natural hazards of droughts and floods as a result climate change, compounded anthropogenic influences in both urban intensively managed rural catchments. However, the characteristics sustainable flow that needed to maintain or restore hydrologic, biogeochemical ecological function under rapid global change remain unclear contested. We conducted an inter-comparison two streams Berlin-Brandenburg region NE Germany, which mesoscale sub-catchments River Spree; intermittent agricultural stream (the Demnitzer Millcreek) heavily anthropogenically Panke). Through tracer-based analyses using stable water isotopes, we identified dominant physical processes (runoff sources, flowpaths age characteristics) sustaining streamflow over multiple years (2018–2023), including three major drought (2018–20, 2021–22). In stream, low flows regulated through artificially increased baseflow from treated waste effluent (by up 80 %), whilst storm drainage drives rapid, transient high runoff responses (up %) intense convective summer rainfall. The groundwater-dominated experienced extended no-flow periods during (⁓ 60 % year), only moderate coefficients (<10 winter along near-surface paths after heavy streams, groundwater dominance with young influence prevails, ages despite significant runoff, higher ones (⁓15 %). Urban cover resulted mean transit time ⁓4 compared arable land ⁓3 years, highlighting interlinkages landuse catchment properties on times. Understanding seasonal interannual variability generation hydrological template, has potential for assessing impacts sustainability future management, wider quality implications across environments.

Language: Английский

Hydrological connectivity and biogeochemical dynamics in the function and management of the lower Oder floodplain DOI Creative Commons
Hanwu Zheng, Doerthe Tetzlaff, Christian Birkel

et al.

Journal of Hydrology, Journal Year: 2025, Volume and Issue: unknown, P. 132708 - 132708

Published: Jan. 1, 2025

Language: Английский

Citations

3
Interaction regimes of surface water and groundwater in a hyper-arid endorheic watershed on Tibetan Plateau: Insights from multi-proxy data DOI
Yong Xiao, Yuqing Zhang,

Hongjie Yang

et al.

Journal of Hydrology, Journal Year: 2024, Volume and Issue: unknown, P. 132020 - 132020

Published: Sept. 1, 2024

Language: Английский

Citations

15
Seasonal and Inter‐Annual Dynamics in Water Quality and Stream Metabolism in a Beaver‐Impacted Drought‐Sensitive Lowland Catchment DOI Creative Commons
Famin Wang, Doerthe Tetzlaff, Christian Birkel

et al.

Hydrological Processes, Journal Year: 2025, Volume and Issue: 39(2)

Published: Feb. 1, 2025

ABSTRACT Increasing drought frequency and severity from climate change are causing streamflow to become increasingly intermittent in many areas. This has implications for the spatio‐temporal characteristics of water quality regimes which need be understood terms risks provision clean public supplies instream habitats. Recent advances sensor technology allow reliable accurate high‐resolution monitoring a growing number parameters. Here, we continuously monitored suite parameters over 3 years an stream network eutrophic, lowland Demnitzer Millcreek catchment, Germany. We focused on effects wetland systems impacted by beaver dams diurnal, seasonal inter‐annual variation dynamics at two sites, upstream downstream these wetlands. then used data model metabolism. Dissolved oxygen pH were higher wetlands, while conductivity, turbidity, chlorophyll phosphorous concentrations downstream. found clear diurnal cycling dissolved both sites. These correlated with hydroclimatic changes metabolism, becoming pronounced as temperatures increased flows decreased spring summer. Upstream wetlands this corresponded rapidly heterotrophic modelled Gross Primary Production (GPP) was exceeded Ecosystem Respiration (ER). Downstream, where GPP lower, usually strongly prone hypoxic conditions (i.e., insufficient oxygen) before ceased coincided lower velocities deeper channels Seasonal variations mainly correlate factors (particularly temperature) their influence streamflow. study highlights that heterotrophy hypoxia rivers central Europe is important feature streams agricultural landscapes continue leaching nutrients. insights contribute evidence base understanding how will affect quantity rural resources presence beavers requires management responses.

Language: Английский

Citations

1
Assessing impacts of alternative land use strategies on water partitioning, storage and ages in drought‐sensitive lowland catchments using tracer‐aided ecohydrological modelling DOI Creative Commons
Shuxin Luo,

Doerthe Tetzlaff,

Aaron Smith

et al.

Hydrological Processes, Journal Year: 2024, Volume and Issue: 38(4)

Published: April 1, 2024

Abstract Continuing negative rainfall anomalies, coupled with climate change projections of increased drought severity and frequency, drive an urgent need to increase resilience integration in land water management strategies many regions the world. However, complex interactions between cover change, ecohydrological partitioning availability are difficult quantify, especially at different temporal spatial scales. In conjunction local stakeholders, we developed plausible, alternative use scenarios (including forest diversification agroforestry schemes) based on existing four primary types (i.e., conifer broadleaved forests, arable agriculture, pasture) a 66 km 2 drought‐sensitive catchment northern Germany. We used modelling evaluate changes flux partitioning, storage ages. The spatially‐distributed, tracer‐aided model, EcH O‐iso, calibrated using hydrometric, isotopic data daily time steps from 2007 2019 was this assessment. results showed that replacing forests uneven‐aged mixed younger broad‐leaved trees had greatest potential for reducing total evapotranspiration increasing groundwater recharge. For coniferous 50% proportion projected result 11% recharge across catchment. mixed‐forest alternatives also reduced turnover times, which would support more rapid recovery soil moisture stores following droughts. This study demonstrates such approach has contribute useful science‐based evidence policy makers allowing quantitative assessment effects effective communication stakeholders.

Language: Английский

Citations

8
Integrated monitoring and modeling to disentangle the complex spatio-temporal dynamics of urbanized streams under drought stress DOI Creative Commons
Gregorio Alejandro López Moreira Mazacotte, Doerthe Tetzlaff, Christian Marx

et al.

Environmental Monitoring and Assessment, Journal Year: 2024, Volume and Issue: 196(6)

Published: May 20, 2024

We have a poor understanding of how urban drainage and other engineered components interact with more natural hydrological processes in green blue spaces to generate stream flow. This limits the scientific evidence base for predicting mitigating effects future development built environment climate change on water resources their ecosystem services. Here, we synthesize > 20 years environmental monitoring data better understand function 109-km

Language: Английский

Citations

4
Interaction between intermittent river and groundwater in arid and semiarid basin considering the influence of evaporation on isotopic compositions DOI Creative Commons
Jing Jin, Tiejun Liu,

Zilong Liao

et al.

Journal of Hydrology Regional Studies, Journal Year: 2024, Volume and Issue: 54, P. 101876 - 101876

Published: June 24, 2024

Study region: Tabu Basin is located on a typical-deserted steppe in Inner Mongolia, China and plays significant role maintaining ecological stability of northern China. focus: Among rivers worldwide, 51–60 % cease to flow for at least one day annually, especially arid semiarid areas. Understanding interactions between intermittent (IRs) groundwater (GW) crucial protecting water resources sustaining balance. A comprehensive framework was developed analyze these interactions. New hydrological insights the Unlike previous studies, this study considered seasonal differences hydrochemical isotopic compositions IR GW, as well intensive influence evaporation. Multitemporal datasets were employed IR–GW interaction across spatial, temporal, profiling scales. Hydrochemical evidence analysis indicated input meltwater with depleted signatures GW recharge IR. The followed order rainfall <

Language: Английский

Citations

4
Impact of drought hazards on flow regimes in anthropogenically impacted streams: an isotopic perspective on climate stress DOI Creative Commons
Maria Magdalena Warter, Doerthe Tetzlaff, Christian Marx

et al.

Natural hazards and earth system sciences, Journal Year: 2024, Volume and Issue: 24(11), P. 3907 - 3924

Published: Nov. 14, 2024

Abstract. Flow regimes are increasingly impacted by more extreme natural hazards of droughts and floods as a result climate change, compounded anthropogenic influences in both urban intensively managed rural catchments. However, the characteristics sustainable flow that needed to maintain or restore hydrologic, biogeochemical ecological functions under rapid global change remain unclear contested. We conducted an intercomparison two streams Berlin–Brandenburg region northeast Germany, which mesoscale subcatchments Spree river: intermittent agricultural stream (the Demnitzer Millcreek) heavily anthropogenically Panke). Through tracer-based analyses using stable water isotopes, we identified dominant physical processes (runoff sources, flowpaths age characteristics) sustaining streamflow over multiple years (2018–2023), including three major drought (2018–2020, 2021–2022). In stream, low flows regulated through artificially increased baseflow from treated wastewater effluents (by up 80 %), whilst storm drainage drives rapid, transient high-flow runoff responses (up %) intense convective summer rainfall. The groundwater-dominated experienced extended no-flow periods during (∼ 60 % year) only moderate coefficients (< 10 winter along near-surface paths after heavy streams, groundwater dominance with young influence prevails, ages despite significant higher ones 15 %). Urban cover resulted mean transit time ∼ 4 compared arable land at 3 years, highlighting interlinkages use catchment properties on times. Understanding seasonal interannual variability generation hydrological template has potential assess impacts sustainability future management, wider quality implications across environments.

Language: Английский

Citations

1
Water sources and threshold behaviors of streamflow generation in a mountain headwater catchment DOI
Xuegao Chen, Zhongbo Yu, Peng Yi

et al.

Journal of Hydrology, Journal Year: 2024, Volume and Issue: 644, P. 132117 - 132117

Published: Oct. 5, 2024

Language: Английский

Citations

0
Impact of drought hazards on flow regimes in anthropogenically impacted streams: an isotopic perspective on climate stress DOI Creative Commons
Maria Magdalena Warter, Doerthe Tetzlaff, Christian Marx

et al.

Published: May 14, 2024

Abstract. Flow regimes are increasingly impacted by more extreme natural hazards of droughts and floods as a result climate change, compounded anthropogenic influences in both urban intensively managed rural catchments. However, the characteristics sustainable flow that needed to maintain or restore hydrologic, biogeochemical ecological function under rapid global change remain unclear contested. We conducted an inter-comparison two streams Berlin-Brandenburg region NE Germany, which mesoscale sub-catchments River Spree; intermittent agricultural stream (the Demnitzer Millcreek) heavily anthropogenically Panke). Through tracer-based analyses using stable water isotopes, we identified dominant physical processes (runoff sources, flowpaths age characteristics) sustaining streamflow over multiple years (2018–2023), including three major drought (2018–20, 2021–22). In stream, low flows regulated through artificially increased baseflow from treated waste effluent (by up 80 %), whilst storm drainage drives rapid, transient high runoff responses (up %) intense convective summer rainfall. The groundwater-dominated experienced extended no-flow periods during (⁓ 60 % year), only moderate coefficients (<10 winter along near-surface paths after heavy streams, groundwater dominance with young influence prevails, ages despite significant runoff, higher ones (⁓15 %). Urban cover resulted mean transit time ⁓4 compared arable land ⁓3 years, highlighting interlinkages landuse catchment properties on times. Understanding seasonal interannual variability generation hydrological template, has potential for assessing impacts sustainability future management, wider quality implications across environments.

Language: Английский

Citations

0
Reply on RC1 DOI Creative Commons

Maria Magdalena Warter

Published: July 24, 2024

Abstract. Flow regimes are increasingly impacted by more extreme natural hazards of droughts and floods as a result climate change, compounded anthropogenic influences in both urban intensively managed rural catchments. However, the characteristics sustainable flow that needed to maintain or restore hydrologic, biogeochemical ecological function under rapid global change remain unclear contested. We conducted an inter-comparison two streams Berlin-Brandenburg region NE Germany, which mesoscale sub-catchments River Spree; intermittent agricultural stream (the Demnitzer Millcreek) heavily anthropogenically Panke). Through tracer-based analyses using stable water isotopes, we identified dominant physical processes (runoff sources, flowpaths age characteristics) sustaining streamflow over multiple years (2018–2023), including three major drought (2018–20, 2021–22). In stream, low flows regulated through artificially increased baseflow from treated waste effluent (by up 80 %), whilst storm drainage drives rapid, transient high runoff responses (up %) intense convective summer rainfall. The groundwater-dominated experienced extended no-flow periods during (⁓ 60 % year), only moderate coefficients (<10 winter along near-surface paths after heavy streams, groundwater dominance with young influence prevails, ages despite significant runoff, higher ones (⁓15 %). Urban cover resulted mean transit time ⁓4 compared arable land ⁓3 years, highlighting interlinkages landuse catchment properties on times. Understanding seasonal interannual variability generation hydrological template, has potential for assessing impacts sustainability future management, wider quality implications across environments.

Language: Английский

Citations

0