Trophic status of a shallow lake in Inner Mongolia: long-term, seasonal, and spatial variation

Ecological Indicators, Journal Year: 2023, Volume and Issue: 156, P. 111167 - 111167

Published: Oct. 27, 2023

The study of lake-trophic status drivers and their variable effects over space time can assist in the management lake eutrophication. Winter dynamics trophic are rarely evaluated, yet they could vary drastically from more commonly sampled summer patterns. This represents a key blindspot our knowledge because ice sheets affect nutrient distribution (e.g., nitrogen phosphorus), light infiltration (translucency), phytoplankton propagation (Chl-a concentration). We examined long-term (2011–2020) changes (trophic level index; TLI) Lake Wuliangsuhai, shallow situated cold arid region, using Generalized Additive Models (GAMs). results suggested significant decrease eutrophication Wuliangsuhai period, with TLI decreasing 61.7 (moderately eutrophic) 2011 to 49.9 (mesotrophic) 2020. was significantly higher winter (p < 0.05), rank seasons terms of: (58.7) > (54.7) autumn (54.2) spring (54.0). ice-covered period exceeded that ice-free (54.3) 0.05). There were also spatial differences Factors driving temporal heterogeneity levels included water supplement, depth, temperature, external inputs nutrients, hydrodynamic conditions (flow velocity), phragmites, location main diversion channel.

Language: Английский

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Hydrological simulation of ungauged basins via forcing by large‐scale hydrology models

Hydrological Processes, Journal Year: 2023, Volume and Issue: 37(12)

Published: Dec. 1, 2023

Abstract The established watershed's hydrologic simulation process, involving the calibration and validation of a model through spatiotemporal streamflow observations, has recently been adapted to encompass ungauged watersheds. research introduces methodology for simulating hydrosystems, suggesting regional rainfall‐runoff models using large‐scale hydrological (LSMs) in absence situ measurements. For doing so, LSM's 30‐years simulated discharges at various basins subbasins case study River Basin District are assessed their accuracy against limited available observations. Subsequently, rectified time series tunes optimal parametrization lumped that is triggered by precipitation temperature data from partially dense meteorological network. validated then applied selective neighbouring employing regionalization concept used LSMs, with similar physiographic characteristics those where was set up. performance statistical metrics. In cases observations available, results show very satisfactory indexes (e.g., coefficient determination: 0.654 < R 2 0.949, Kling‐Gupta efficiency: 0.759 KGE <0.790, Nash–Sutcliffe 0.649 NSE <0.745 all cases). completely an order magnitude index, comparison LSM also indicates proposed approach. To sum up, underscores alternate use large scale modelling coupling as asset across basin scales globally, offering reliable water quantity information.

Language: Английский

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Spatio-temporal patterns and trends of streamflow in water-scarce Mediterranean basins

Published: Jan. 3, 2024

Abstract. The issue of water scarcity, exacerbated by climate change and demographic increase, has become a growing concern in many regions throughout the world. Understanding hydrological behaviour to promote resilient sustainable management is paramount. Hydrological models that integrate natural processes anthropogenic alterations basin’s hydrology are powerful tool support decision-making. We developed SWAT+ model including stakeholder expert knowledge on introducing novel calibration validation approach suitable for heterogeneous basins space / or time. also assessed spatio-temporal patterns trends streamflow during first two decades 21st century Catalan River Basin District, western Mediterranean, using wide variety indicators fully characterize regime. calibrated validated data from 50 gauging stations, verifying usefulness new strategy. Co-development with stakeholders integration knowledge, most notably reservoir operations, helped improve performance. Results revealed generalized reduction, as well increased dominance flashiness zero-flows recurrence. observed differences seasonal trends, autumn being affected season. These results provide insights into how pressures going keep affecting resources availability future, thus raising need practices other vulnerable scarcity.

Language: Английский

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Analyzing the primary hydrological components (rainfall and discharge) within the context of Cipunagara Watershed management, West Java

IOP Conference Series Earth and Environmental Science, Journal Year: 2023, Volume and Issue: 1263(1), P. 012034 - 012034

Published: Nov. 1, 2023

Abstract The Cipunagara River Basin is a component of the Citarum Watershed, necessitating thorough analysis hydrological data particularly rainfall and discharge for effective management. watershed spans moderate area 1,363 km 2 across three administrative divisions: Subang Regency, Indramayu segment Sumedang Regency. Hydrological imperative in This study aims to analyze key elements relevant Watershed Rigorous consistency homogeneity tests were conducted on from each station. Changes flow patterns scrutinized by examining shifts runoff coefficient values base magnitudes. upward trend during rainy season corresponding decline throughout dry may be attributed land use alterations within zone. To proactively address drought concerns management, calculated 80% dependable assess water availability arid months, yielding an rate 16.25 m 3 /s Watershed.

Language: Английский

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Comment on egusphere-2023-3007

Published: Jan. 31, 2024

Abstract. The issue of water scarcity, exacerbated by climate change and demographic increase, has become a growing concern in many regions throughout the world. Understanding hydrological behaviour to promote resilient sustainable management is paramount. Hydrological models that integrate natural processes anthropogenic alterations basin’s hydrology are powerful tool support decision-making. We developed SWAT+ model including stakeholder expert knowledge on introducing novel calibration validation approach suitable for heterogeneous basins space / or time. also assessed spatio-temporal patterns trends streamflow during first two decades 21^st century Catalan River Basin District, western Mediterranean, using wide variety indicators fully characterize regime. calibrated validated data from 50 gauging stations, verifying usefulness new strategy. Co-development with stakeholders integration knowledge, most notably reservoir operations, helped improve performance. Results revealed generalized reduction, as well increased dominance flashiness zero-flows recurrence. observed differences seasonal trends, autumn being affected season. These results provide insights into how pressures going keep affecting resources availability future, thus raising need practices other vulnerable scarcity.

Language: Английский

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Comment on egusphere-2023-3007

Published: Feb. 12, 2024

Abstract. The issue of water scarcity, exacerbated by climate change and demographic increase, has become a growing concern in many regions throughout the world. Understanding hydrological behaviour to promote resilient sustainable management is paramount. Hydrological models that integrate natural processes anthropogenic alterations basin’s hydrology are powerful tool support decision-making. We developed SWAT+ model including stakeholder expert knowledge on introducing novel calibration validation approach suitable for heterogeneous basins space / or time. also assessed spatio-temporal patterns trends streamflow during first two decades 21^st century Catalan River Basin District, western Mediterranean, using wide variety indicators fully characterize regime. calibrated validated data from 50 gauging stations, verifying usefulness new strategy. Co-development with stakeholders integration knowledge, most notably reservoir operations, helped improve performance. Results revealed generalized reduction, as well increased dominance flashiness zero-flows recurrence. observed differences seasonal trends, autumn being affected season. These results provide insights into how pressures going keep affecting resources availability future, thus raising need practices other vulnerable scarcity.

Language: Английский

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Reply on RC2

Published: Feb. 21, 2024

Abstract. The issue of water scarcity, exacerbated by climate change and demographic increase, has become a growing concern in many regions throughout the world. Understanding hydrological behaviour to promote resilient sustainable management is paramount. Hydrological models that integrate natural processes anthropogenic alterations basin’s hydrology are powerful tool support decision-making. We developed SWAT+ model including stakeholder expert knowledge on introducing novel calibration validation approach suitable for heterogeneous basins space / or time. also assessed spatio-temporal patterns trends streamflow during first two decades 21^st century Catalan River Basin District, western Mediterranean, using wide variety indicators fully characterize regime. calibrated validated data from 50 gauging stations, verifying usefulness new strategy. Co-development with stakeholders integration knowledge, most notably reservoir operations, helped improve performance. Results revealed generalized reduction, as well increased dominance flashiness zero-flows recurrence. observed differences seasonal trends, autumn being affected season. These results provide insights into how pressures going keep affecting resources availability future, thus raising need practices other vulnerable scarcity.

Language: Английский

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Reply on RC1

Published: Feb. 21, 2024

Abstract. The issue of water scarcity, exacerbated by climate change and demographic increase, has become a growing concern in many regions throughout the world. Understanding hydrological behaviour to promote resilient sustainable management is paramount. Hydrological models that integrate natural processes anthropogenic alterations basin’s hydrology are powerful tool support decision-making. We developed SWAT+ model including stakeholder expert knowledge on introducing novel calibration validation approach suitable for heterogeneous basins space / or time. also assessed spatio-temporal patterns trends streamflow during first two decades 21^st century Catalan River Basin District, western Mediterranean, using wide variety indicators fully characterize regime. calibrated validated data from 50 gauging stations, verifying usefulness new strategy. Co-development with stakeholders integration knowledge, most notably reservoir operations, helped improve performance. Results revealed generalized reduction, as well increased dominance flashiness zero-flows recurrence. observed differences seasonal trends, autumn being affected season. These results provide insights into how pressures going keep affecting resources availability future, thus raising need practices other vulnerable scarcity.

Language: Английский

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Spatio-temporal patterns and trends of streamflow in water-scarce Mediterranean basins

Hydrology and earth system sciences, Journal Year: 2024, Volume and Issue: 28(24), P. 5353 - 5373

Published: Dec. 17, 2024

Abstract. The issue of water scarcity, exacerbated by climate change and demographic increase, has become a growing concern in many regions throughout the world. Understanding hydrological behaviour to promote resilient sustainable management is paramount. Hydrological models that integrate natural processes anthropogenic alterations basin's hydrology are powerful tool support decision-making. We developed SWAT+ model including stakeholder expert knowledge on introducing novel calibration validation approach suitable for heterogeneous basins space and/or time. also assessed spatio-temporal patterns trends streamflow during first 2 decades 21st century Catalan River Basin District, western Mediterranean, using wide variety indicators fully characterize regime. calibrated validated data from 50 gauging stations, verifying usefulness new strategy. Co-development with stakeholders integration knowledge, most notably reservoir operations, helped improve performance. Results revealed generalized reduction, as well increased dominance flashiness zero-flow recurrence. observed differences seasonal trends, autumn being affected season. These results provide insights into how pressures going keep affecting resources availability future, thus raising need practices other vulnerable scarcity.

Language: Английский

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Spatio-Temporal Patterns and Trends of Streamflow in Water-Scarce Mediterranean Basins

Published: Jan. 1, 2023

The issue of water scarcity, exacerbated by climate change and demographic increase, has become a growing concern in many regions throughout the world. Understanding hydrological behavior to promote resilient sustainable management is paramount. Hydrological models that integrate natural processes anthropogenic alterations basin’s hydrology are powerful tool support decision-making. We aimed develop SWAT+ model including stakeholder expert knowledge on introducing novel calibration validation approach suitable for heterogeneous basins either space or time. also assess spatio-temporal patterns trends streamflow during first two decades 21st century Catalan River Basin District, western Mediterranean. calibrated validated using data from 50 gauging stations, verifying usefulness new strategy. Co-development with stakeholders integration knowledge, most notably reservoir operations, helped improve performance. Results revealed generalized reduction, as well increased dominance flashiness zero-flows recurrence. observed differences seasonal trends, autumn being affected season. These results provide insights into how pressures going keep affecting resources availability future, thus raising need practices other vulnerable scarcity.

Language: Английский

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