Articles | Volume 20, issue 7
https://doi.org/10.5194/hess-20-2691-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/hess-20-2691-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Research article
| 
08 Jul 2016
Research article |
| 08 Jul 2016
Contradictory hydrological impacts of afforestation in the humid tropics evidenced by long-term field monitoring and simulation modelling
Guillaume Lacombe
CORRESPONDING AUTHOR
International Water Management Institute (IWMI), Southeast Asia Regional Office, Vientiane, Lao PDR
Olivier Ribolzi
Institut de Recherche pour le Développement (IRD), GET, Université Paul Sabatier, Toulouse, France
Anneke de Rouw
IRD, IEES-Paris UMR 242, Université Pierre et Marie-Curie, Sorbonne Universités, Paris, France
Alain Pierret
IRD, IEES-Paris UMR 242, c/o National Agriculture and Forestry Research Institute (NAFRI), Vientiane, Lao PDR
Keoudone Latsachak
IRD, IEES-Paris UMR 242, c/o National Agriculture and Forestry Research Institute (NAFRI), Vientiane, Lao PDR
Norbert Silvera
IRD, IEES-Paris UMR 242, c/o National Agriculture and Forestry Research Institute (NAFRI), Vientiane, Lao PDR
Rinh Pham Dinh
Soils and Fertilizers Research Institute (SFRI), Hanoi, Vietnam
Didier Orange
IRD, Eco&Sols UMR 210, Montpellier SupAgro, Montpellier, France
Jean-Louis Janeau
IRD, IEES-Paris UMR 242, c/o SFRI, Hanoi, Vietnam
Bounsamai Soulileuth
IRD, IEES-Paris UMR 242, c/o National Agriculture and Forestry Research Institute (NAFRI), Vientiane, Lao PDR
Henri Robain
IRD, IEES-Paris UMR 242, Université Pierre et Marie-Curie, Sorbonne Universités, Paris, France
Adrien Taccoen
AgroParisTech, Laboratoire d'étude des ressources Forêt Bois LERFoB, ENGREF, UMR1092, Nancy, France
Phouthamaly Sengphaathith
University of Arizona, Graduate College, Tucson, USA
Emmanuel Mouche
Laboratoire des Sciences du Climat et de l'Environnement (LSCE), UMR 8212, C.E. de Saclay, Gif-sur-Yvette, France
Oloth Sengtaheuanghoung
Agriculture Land-Use Planning Center (ALUPC), Ministry of Agriculture and Forestry, Vientiane, Lao PDR
Toan Tran Duc
Soils and Fertilizers Research Institute (SFRI), Hanoi, Vietnam
Christian Valentin
IRD, IEES-Paris UMR 242, Université Pierre et Marie-Curie, Sorbonne Universités, Paris, France
Related authors
No articles found.
Laurie Boithias, Olivier Ribolzi, Emma Rochelle-Newall, Chanthanousone Thammahacksa, Paty Nakhle, Bounsamay Soulileuth, Anne Pando-Bahuon, Keooudone Latsachack, Norbert Silvera, Phabvilay Sounyafong, Khampaseuth Xayyathip, Rosalie Zimmermann, Sayaphet Rattanavong, Priscia Oliva, Thomas Pommier, Olivier Evrard, Sylvain Huon, Jean Causse, Thierry Henry-des-Tureaux, Oloth Sengtaheuanghoung, Nivong Sipaseuth, and Alain Pierret
Earth Syst. Sci. Data, 14, 2883–2894, https://doi.org/10.5194/essd-14-2883-2022, https://doi.org/10.5194/essd-14-2883-2022, 2022
Short summary
Short summary
Fecal pathogens in surface waters may threaten human health, especially in developing countries. The Escherichia coli (E. coli) database is organized in three datasets and includes 1602 records from 31 sampling stations located within the Mekong River basin in Lao PDR. Data have been used to identify the drivers of E. coli dissemination across tropical catchments, including during floods. Data may be further used to interpret new variables or to map the health risk posed by fecal pathogens.
Ather Abbas, Sangsoo Baek, Norbert Silvera, Bounsamay Soulileuth, Yakov Pachepsky, Olivier Ribolzi, Laurie Boithias, and Kyung Hwa Cho
Hydrol. Earth Syst. Sci., 25, 6185–6202, https://doi.org/10.5194/hess-25-6185-2021, https://doi.org/10.5194/hess-25-6185-2021, 2021
Short summary
Short summary
Correct estimation of fecal indicator bacteria in surface waters is critical for public health. Process-driven models and recently data-driven models have been applied for water quality modeling; however, a systematic comparison for simulation of E. coli is missing in the literature. We compared performance of process-driven (HSPF) and data-driven (LSTM) models for E. coli simulation. We show that LSTM can be an alternative to process-driven models for estimation of E. coli in surface waters.
Gil Mahé, Gamal Abdo, Ernest Amoussou, Telesphore Brou, Stephan Dietrich, Ahmed El Tayeb, Henny van Lanen, Mohamed Meddi, Anil Mishra, Didier Orange, Thi Phuong Quynh Le, Raphael Tshimanga, Patrick Valimba, Santiago Yepez, Andrew Ogilvie, and Oula Amrouni
Proc. IAHS, 384, 5–18, https://doi.org/10.5194/piahs-384-5-2021, https://doi.org/10.5194/piahs-384-5-2021, 2021
Short summary
Short summary
The FRIEND-Water program (FWP) is the oldest and the most transverse program within the UNESCO IHP. It allows large communities of hydrologists to collaborate across borders on common shared data and scientific topics, addressed through 8 large world regions. Research priorities evolve according to the projections given by the member States during the IHP councils. FWP further activities follow the IHP IX program with the support of the Montpellier UNESCO Category II Center ICIREWAD.
Pascal Breil, Abdoulaye Faty, and Didier Orange
Proc. IAHS, 384, 331–336, https://doi.org/10.5194/piahs-384-331-2021, https://doi.org/10.5194/piahs-384-331-2021, 2021
Short summary
Short summary
Due to global change, cities of the future will have to deal with more intense runoff and longer drought sequences, in addition to a growing urban and peri-urban population. French Mediterranean cities, such as Toulon, are already densely urbanised and exposed to the effects of global warming. The adaptation of their infrastructures is problematic. Cities with high development potential, such as Dakar, offer the opportunity to imagine other solutions for the management of water resources.
Waly Faye, Awa Niang Fall, Didier Orange, Frédéric Do, Olivier Roupsard, and Alioune Kane
Proc. IAHS, 383, 391–399, https://doi.org/10.5194/piahs-383-391-2020, https://doi.org/10.5194/piahs-383-391-2020, 2020
Short summary
Short summary
People from the Senegalese Peanut Basin deal with a dramatic increase of water scarcity due both to a rain deficit and a surface water salinization. We carried out the analysis of daily rain from 1950 to 2015 and water salinity of 78 wells on 300 km2. We confirm a climatic break in 1970 leaded a long dry period until 2009, with a decreased of the rainy day number per year, probably driving a large extension of well salinization and salt soil crusting accelerated by a large tidal event in 1984.
Cyriaque Rufin Nguimalet and Didier Orange
Proc. IAHS, 383, 79–84, https://doi.org/10.5194/piahs-383-79-2020, https://doi.org/10.5194/piahs-383-79-2020, 2020
Short summary
Short summary
The research of ruptures on rainfall and discharge long serial data from 1950 to 1995 on 3 close basins (of 2000 to 6000 km2) in Central African Republic has shown a high variability. The continental rupture of 1970 marking the drought on large West and Central African river basins is not clearly observed. However, all the studied basins have shown a degradation of their hydrological regimes since the end of the 1980s due to the drought severity.
Nhu Da Le, Thi Phuong Quynh Le, Thi Xuan Binh Phung, Thi Thuy Duong, and Orange Didier
Proc. IAHS, 383, 367–374, https://doi.org/10.5194/piahs-383-367-2020, https://doi.org/10.5194/piahs-383-367-2020, 2020
Short summary
Short summary
This paper analyses the change of total suspended sediment (TSS) and total organic nitrogen (TON) loads of the Red River from 1960–2015 in which numerous dams in both China and Vietnam have been constructed. Strong decrease of TSS and TON loads allocated to the dam impoundments in spite of population and deforestation increase. The TSS flux decrease has driven a clear reduction of associated elements (nitrogen), which let to hypothesis a change in biogeochemical processes in the coastal zone.
Salma Tafasca, Agnès Ducharne, and Christian Valentin
Hydrol. Earth Syst. Sci., 24, 3753–3774, https://doi.org/10.5194/hess-24-3753-2020, https://doi.org/10.5194/hess-24-3753-2020, 2020
Short summary
Short summary
In land surface models (LSMs), soil properties are inferred from soil texture. In this study, we use different input global soil texture maps from the literature to investigate the impact of soil texture on the simulated water budget in an LSM. The medium loamy textures give the highest evapotranspiration and lowest total runoff rates. However, the different soil texture maps result in similar water budgets because of their inherent similarities, especially when upscaled at the 0.5° resolution.
Chandrashekhar Deshmukh, Frédéric Guérin, Axay Vongkhamsao, Sylvie Pighini, Phetdala Oudone, Saysoulinthone Sopraseuth, Arnaud Godon, Wanidaporn Rode, Pierre Guédant, Priscia Oliva, Stéphane Audry, Cyril Zouiten, Corinne Galy-Lacaux, Henri Robain, Olivier Ribolzi, Arun Kansal, Vincent Chanudet, Stéphane Descloux, and Dominique Serça
Biogeosciences, 15, 1775–1794, https://doi.org/10.5194/bg-15-1775-2018, https://doi.org/10.5194/bg-15-1775-2018, 2018
Short summary
Short summary
Based on an intense monitoring of CO2 concentrations and organic and inorganic carbon in the reservoir, in the rivers upstream and downstream, and of CO2 emissions from the drawdown area, we confirmed the importance of the flooded stock of organic matter as a source of C fueling emissions and we show that the drawdown area contributes, depending on the year, from 50 to 75 % of total annual gross emissions in the flat and shallow Nam Theun 2 Reservoir.
Judith Eeckman, Pierre Chevallier, Aaron Boone, Luc Neppel, Anneke De Rouw, Francois Delclaux, and Devesh Koirala
Hydrol. Earth Syst. Sci., 21, 4879–4893, https://doi.org/10.5194/hess-21-4879-2017, https://doi.org/10.5194/hess-21-4879-2017, 2017
Short summary
Short summary
The central part of the Himalayan Range presents tremendous heterogeneity in terms of topography and climatology, but the representation of hydro-climatic processes for Himalayan catchments is limited due to a lack of knowledge in such poorly instrumented environments. The proposed approach is to characterize the effect of altitude on precipitation by considering ensembles of acceptable altitudinal factors. Ensembles of acceptable values for the components of the water cycle are then provided.
Judith Eeckman, Santosh Nepal, Pierre Chevallier, Gauthier Camensuli, Francois Delclaux, Aaron Boone, and Anneke De Rouw
Hydrol. Earth Syst. Sci. Discuss., https://doi.org/10.5194/hess-2017-401, https://doi.org/10.5194/hess-2017-401, 2017
Preprint retracted
Short summary
Short summary
This paper compares the simulation of water cycle obtained using two different hydrological models
in two small mountainous Himalayan catchments. The reliability of the simulations for evapotranspiration, discharge can therefore be considered as satisfactory. The differences in the structure and results of the two models mainly concern the water storages and flows in the soil, in particular in high-mountain environment.
Related subject area
Subject: Catchment hydrology | Techniques and Approaches: Instruments and observation techniques
Thermal regime of High Arctic tundra ponds, Nanuit Itillinga (Polar Bear Pass), Nunavut, Canada
Impacts of hydrofacies geometry designed from seismic refraction tomography on estimated hydrogeophysical variables
Seasonal dynamics and spatial patterns of soil moisture in a loess catchment
Effects of urbanization on the water cycle in the Shiyang River basin: based on a stable isotope method
Using high-frequency solute synchronies to determine simple two-end-member mixing in catchments during storm events
Isotopic variations in surface waters and groundwaters of an extremely arid basin and their responses to climate change
Seasonal variation and influence factors of river water isotopes in the East Asian monsoon region: a case study in the Xiangjiang River basin spanning 13 hydrological years
El Niño–Southern Oscillation (ENSO)-driven hypersedimentation in the Poechos Reservoir, northern Peru
Isotope-derived young water fractions in streamflow across the tropical Andes mountains and Amazon floodplain
Exploring the provenance of information across Canadian hydrometric stations: Implications for discharge estimation and uncertainty quantification
Adaptively monitoring streamflow using a stereo computer vision system
Technical Note: Combining undisturbed soil monoliths for hydrological indoor experiments
Hydrodynamics of a high Alpine catchment characterized by four natural tracers
Seasonal variation and release of soluble reactive phosphorus in an agricultural upland headwater in central Germany
Improving the understanding of N transport in a rural catchment under Atlantic climate conditions from the analysis of the concentration–discharge relationship derived from a high-frequency data set
Sources and mean transit times of stream water in an intermittent river system: the upper Wimmera River, southeast Australia
Bedrock depth influences spatial patterns of summer baseflow, temperature and flow disconnection for mountainous headwater streams
Agricultural intensification vs. climate change: what drives long-term changes in sediment load?
Evaporation from a large lowland reservoir – observed dynamics and drivers during a warm summer
Comment on “A comparison of catchment travel times and storage deduced from deuterium and tritium tracers using StorAge Selection functions” by Rodriguez et al. (2021)
Use of water isotopes and chemistry to infer the type and degree of exchange between groundwater and lakes in an esker complex of northeastern Ontario, Canada
Technical note: Introduction of a superconducting gravimeter as novel hydrological sensor for the Alpine research catchment Zugspitze
CABra: a novel large-sample dataset for Brazilian catchments
Benefits from high-density rain gauge observations for hydrological response analysis in a small alpine catchment
Hydrologic regimes drive nitrate export behavior in human-impacted watersheds
Intensive landscape-scale remediation improves water quality of an alluvial gully located in a Great Barrier Reef catchment
Environmental DNA simultaneously informs hydrological and biodiversity characterization of an Alpine catchment
Technical note: Evaluation of a low-cost evaporation protection method for portable water samplers
New flood frequency estimates for the largest river in Norway based on the combination of short and long time series
The pulse of a montane ecosystem: coupling between daily cycles in solar flux, snowmelt, transpiration, groundwater, and streamflow at Sagehen Creek and Independence Creek, Sierra Nevada, USA
Technical note: A time-integrated sediment trap to sample diatoms for hydrological tracing
Do stream water solute concentrations reflect when connectivity occurs in a small, pre-Alpine headwater catchment?
Soil moisture sensor network design for hydrological applications
Catchment-scale drought: capturing the whole drought cycle using multiple indicators
Field-based estimation and modelling of distributed groundwater recharge in a Mediterranean karst catchment, Wadi Natuf, West Bank
Surface water as a cause of land degradation from dryland salinity
Technical note: A microcontroller-based automatic rain sampler for stable isotope studies
Controls on spatial and temporal variability in streamflow and hydrochemistry in a glacierized catchment
Open-source Arduino-compatible data loggers designed for field research
Water-use dynamics of an alien-invaded riparian forest within the summer rainfall zone of South Africa
Technical note: Mapping surface-saturation dynamics with thermal infrared imagery
Value of uncertain streamflow observations for hydrological modelling
Why has catchment evaporation increased in the past 40 years? A data-based study in Austria
Technical note: GUARD – an automated fluid sampler preventing sample alteration by contamination, evaporation and gas exchange, suitable for remote areas and harsh conditions
Hydrological processes and permafrost regulate magnitude, source and chemical characteristics of dissolved organic carbon export in a peatland catchment of northeastern China
Exploring the influence of citizen involvement on the assimilation of crowdsourced observations: a modelling study based on the 2013 flood event in the Bacchiglione catchment (Italy)
Comment on “Can assimilation of crowdsourced data in hydrological modelling improve flood prediction?” by Mazzoleni et al. (2017)
Multiconfiguration electromagnetic induction survey for paleochannel internal structure imaging: a case study in the alluvial plain of the River Seine, France
Tree-, stand- and site-specific controls on landscape-scale patterns of transpiration
The potamochemical symphony: new progress in the high-frequency acquisition of stream chemical data
Kathy L. Young and Laura C. Brown
Hydrol. Earth Syst. Sci., 28, 3931–3945, https://doi.org/10.5194/hess-28-3931-2024, https://doi.org/10.5194/hess-28-3931-2024, 2024
Short summary
Short summary
This work details the temperature and related variables of several High Arctic ponds in the Nanuit Itillinga (Polar Bear Pass) National Wildlife Area through nine seasons. The ponds show much variability in their temperature patterns over time and space. Ponds normally reached 10–15 °C for parts of the summer except in 2013, a cold summer season in which pond temperatures never exceeded 5 °C. This study contributes to the ongoing discussion of climate warming and its impact on Arctic landscapes.
Nolwenn Lesparre, Sylvain Pasquet, and Philippe Ackerer
Hydrol. Earth Syst. Sci., 28, 873–897, https://doi.org/10.5194/hess-28-873-2024, https://doi.org/10.5194/hess-28-873-2024, 2024
Short summary
Short summary
Vertical maps of seismic velocity reflect variations of subsurface porosity. We use such images to design the geometry of subsurface compartments delimited by velocity thresholds. The obtained patterns are inserted into a hydrogeological model to test the influence of random geometries, velocity thresholds, and hydraulic parameters on data estimated from the model: the depth of the groundwater and magnetic resonance sounding is a geophysical method sensitive to subsurface water content.
Shaozhen Liu, Ilja van Meerveld, Yali Zhao, Yunqiang Wang, and James W. Kirchner
Hydrol. Earth Syst. Sci., 28, 205–216, https://doi.org/10.5194/hess-28-205-2024, https://doi.org/10.5194/hess-28-205-2024, 2024
Short summary
Short summary
We study the seasonal and spatial patterns of soil moisture in 0–500 cm soil using 89 monitoring sites in a loess catchment with monsoonal climate. Soil moisture is highest during the months of least precipitation and vice versa. Soil moisture patterns at the hillslope scale are dominated by the aspect-controlled evapotranspiration variations (a local control), not by the hillslope convergence-controlled downslope flow (a nonlocal control), under both dry and wet conditions.
Rui Li, Guofeng Zhu, Siyu Lu, Liyuan Sang, Gaojia Meng, Longhu Chen, Yinying Jiao, and Qinqin Wang
Hydrol. Earth Syst. Sci., 27, 4437–4452, https://doi.org/10.5194/hess-27-4437-2023, https://doi.org/10.5194/hess-27-4437-2023, 2023
Short summary
Short summary
In semi-arid regions, the problem of water shortages is becoming more and more serious with the acceleration of urbanization. Based on isotope data and hydrometeorological data, we analysed the impact of urbanization on the water cycle of the basin. The results showed that urbanization sped up the process of rainfall runoff. The MRT got shorter from upstream to downstream, and the landscape dams that were built during urbanization made the river evaporate even more.
Nicolai Brekenfeld, Solenn Cotel, Mikaël Faucheux, Paul Floury, Colin Fourtet, Jérôme Gaillardet, Sophie Guillon, Yannick Hamon, Hocine Henine, Patrice Petitjean, Anne-Catherine Pierson-Wickmann, Marie-Claire Pierret, and Ophélie Fovet
EGUsphere, https://doi.org/10.5194/egusphere-2023-2214, https://doi.org/10.5194/egusphere-2023-2214, 2023
Short summary
Short summary
The proposed methodology consists of simultaneously analysing the concentration variation of any two solutes during a storm event, by plotting the concentration variation of one solute against the variation of another solute. For each solute pair and each storm event, this methodology can reveal, whether only two or whether more than two end-members contribute to the stream flow during a storm event. In consequence, conclusions can be drawn about hydro-biogeochemical processes in catchments.
Yu Zhang, Hongbing Tan, Peixin Cong, Dongping Shi, Wenbo Rao, and Xiying Zhang
Hydrol. Earth Syst. Sci., 27, 4019–4038, https://doi.org/10.5194/hess-27-4019-2023, https://doi.org/10.5194/hess-27-4019-2023, 2023
Short summary
Short summary
Rapid climate warming creates barriers for us to investigate water resource states. Using stable and radioactive isotopes, we identified the seasonality and spatiality of the water cycle in the northeastern Tibetan Plateau. Climate warming/humidification accelerates the water cycle in alpine arid basins. Precipitation and meltwater infiltrate along preferential flow paths to facilitate rapid groundwater recharge. Total water resources may show an initially increasing and then decreasing trend.
Xiong Xiao, Xinping Zhang, Zhuoyong Xiao, Zhiguo Rao, Xinguang He, and Cicheng Zhang
Hydrol. Earth Syst. Sci., 27, 3783–3802, https://doi.org/10.5194/hess-27-3783-2023, https://doi.org/10.5194/hess-27-3783-2023, 2023
Short summary
Short summary
With the aim of improving the understanding of seasonal variations in water stable isotopes and catchment hydrological processes, we compared the temporal variations of precipitation and river water isotopes with the hydrometeorological factors in the Xiangjiang River over 13 years. Results showed that the changes in river water isotopes can be variables that reflect the seasonal variations in local environments and extreme events and may show implications for paleoclimate reconstruction.
Anthony Foucher, Sergio Morera, Michael Sanchez, Jhon Orrillo, and Olivier Evrard
Hydrol. Earth Syst. Sci., 27, 3191–3204, https://doi.org/10.5194/hess-27-3191-2023, https://doi.org/10.5194/hess-27-3191-2023, 2023
Short summary
Short summary
The current research investigated, as a representative study case, the sediment accumulated in the Poechos Reservoir (located on the west coast of northern Peru) for retrospectively reconstructing the impact on sediment dynamics (1978–2019) of extreme phases of the El Niño–Southern Oscillation, land cover changes after humid periods and agricultural expansion along the riverine system.
Emily I. Burt, Daxs Herson Coayla Rimachi, Adan Julian Ccahuana Quispe, Abra Atwood, and A. Joshua West
Hydrol. Earth Syst. Sci., 27, 2883–2898, https://doi.org/10.5194/hess-27-2883-2023, https://doi.org/10.5194/hess-27-2883-2023, 2023
Short summary
Short summary
Mountains store and release water, serving as water towers for downstream regions and affecting global sediment and carbon fluxes. We use stream and rain chemistry to calculate how much streamflow comes from recent rainfall across seven sites in the Andes mountains and the nearby Amazon lowlands. We find that the type of rock and the intensity of rainfall control water retention and release, challenging assumptions that mountain topography exerts the primary effect on watershed hydrology.
Shervan Gharari, Paul H. Whitfield, Alain Pietroniro, Jim Freer, Hongli Liu, and Martyn P. Clark
Hydrol. Earth Syst. Sci. Discuss., https://doi.org/10.5194/hess-2023-150, https://doi.org/10.5194/hess-2023-150, 2023
Revised manuscript accepted for HESS
Short summary
Short summary
This study provides insight into the practices that are incorporated into discharge estimation across the national Canadian hydrometric network operated by the Water Survey of Canada, WSC. The procedures used to estimate and correct discharge values are not always understood by end-users. Factors such as ice cover, and sedimentation limit the ability of accurate discharge estimation. Highlighting these challenges sheds light on difficulties in discharge estimation and associated uncertainty.
Nicholas Reece Hutley, Ryan Beecroft, Daniel Wagenaar, Josh Soutar, Blake Edwards, Nathaniel Deering, Alistair Grinham, and Simon Albert
Hydrol. Earth Syst. Sci., 27, 2051–2073, https://doi.org/10.5194/hess-27-2051-2023, https://doi.org/10.5194/hess-27-2051-2023, 2023
Short summary
Short summary
Measuring flows in streams allows us to manage crucial water resources. This work shows the automated application of a dual camera computer vision stream gauging (CVSG) system for measuring streams. Comparing between state-of-the-art technologies demonstrated that camera-based methods were capable of performing within the best available error margins. CVSG offers significant benefits towards improving stream data and providing a safe way for measuring floods while adapting to changes over time.
David Ramler and Peter Strauss
Hydrol. Earth Syst. Sci., 27, 1745–1754, https://doi.org/10.5194/hess-27-1745-2023, https://doi.org/10.5194/hess-27-1745-2023, 2023
Short summary
Short summary
Undisturbed soil monoliths combine advantages of outdoor and indoor experiments; however, there are often size limitations. A promising approach is the combination of smaller blocks to form a single large monolith. We compared the runoff properties of monoliths cut in half and recombined with uncut blocks. The effect of the combination procedure was negligible compared to the inherent soil heterogeneity, and we conclude that advantages outweigh possible adverse effects.
Anthony Michelon, Natalie Ceperley, Harsh Beria, Joshua Larsen, Torsten Vennemann, and Bettina Schaefli
Hydrol. Earth Syst. Sci., 27, 1403–1430, https://doi.org/10.5194/hess-27-1403-2023, https://doi.org/10.5194/hess-27-1403-2023, 2023
Short summary
Short summary
Streamflow generation processes in high-elevation catchments are largely influenced by snow accumulation and melt. For this work, we collected and analyzed more than 2800 water samples (temperature, electric conductivity, and stable isotopes of water) to characterize the hydrological processes in such a high Alpine environment. Our results underline the critical role of subsurface flow during all melt periods and the presence of snowmelt even during the winter periods.
Michael Rode, Jörg Tittel, Frido Reinstorf, Michael Schubert, Kay Knöller, Benjamin Gilfedder, Florian Merensky-Pöhlein, and Andreas Musolff
Hydrol. Earth Syst. Sci., 27, 1261–1277, https://doi.org/10.5194/hess-27-1261-2023, https://doi.org/10.5194/hess-27-1261-2023, 2023
Short summary
Short summary
Agricultural catchments show elevated phosphorus (P) concentrations during summer low flow. In an agricultural stream, we found that phosphorus in groundwater was a major source of stream water phosphorus during low flow, and stream sediments derived from farmland are unlikely to have increased stream phosphorus concentrations during low water. We found no evidence that riparian wetlands contributed to soluble reactive (SR) P loads. Agricultural phosphorus was largely buffered in the soil zone.
María Luz Rodríguez-Blanco, María Teresa Taboada-Castro, and María Mercedes Taboada-Castro
Hydrol. Earth Syst. Sci., 27, 1243–1259, https://doi.org/10.5194/hess-27-1243-2023, https://doi.org/10.5194/hess-27-1243-2023, 2023
Short summary
Short summary
We examine the N dynamics in an Atlantic headwater catchment in the NW Iberian Peninsula, using high-frequency measurements of NO3 and TKN (total Kjeldahl N) during runoff events. The divergence dynamics observed between N components exemplifies the complexity of and variability in NO3 and TKN processes, highlighting the need to understand dominant hydrological pathways for the development of N-specific management plans to ensure that control measures are most effective at the catchment scale.
Zibo Zhou, Ian Cartwright, and Uwe Morgenstern
Hydrol. Earth Syst. Sci., 26, 4497–4513, https://doi.org/10.5194/hess-26-4497-2022, https://doi.org/10.5194/hess-26-4497-2022, 2022
Short summary
Short summary
Streams may receive water from different sources in their catchment. There is limited understanding of which water stores intermittent streams are connected to. Using geochemistry we show that the intermittent streams in southeast Australia are connected to younger smaller near-river water stores rather than regional groundwater. This makes these streams more vulnerable to the impacts of climate change and requires management of the riparian zone for their protection.
Martin A. Briggs, Phillip Goodling, Zachary C. Johnson, Karli M. Rogers, Nathaniel P. Hitt, Jennifer B. Fair, and Craig D. Snyder
Hydrol. Earth Syst. Sci., 26, 3989–4011, https://doi.org/10.5194/hess-26-3989-2022, https://doi.org/10.5194/hess-26-3989-2022, 2022
Short summary
Short summary
The geologic structure of mountain watersheds may control how groundwater and streamwater exchange, influencing where streams dry. We measured bedrock depth at 191 locations along eight headwater streams paired with stream temperature records, baseflow separation and observations of channel dewatering. The data indicated a prevalence of shallow bedrock generally less than 3 m depth, and local variation in that depth can drive stream dewatering but also influence stream baseflow supply.
Shengping Wang, Borbala Szeles, Carmen Krammer, Elmar Schmaltz, Kepeng Song, Yifan Li, Zhiqiang Zhang, Günter Blöschl, and Peter Strauss
Hydrol. Earth Syst. Sci., 26, 3021–3036, https://doi.org/10.5194/hess-26-3021-2022, https://doi.org/10.5194/hess-26-3021-2022, 2022
Short summary
Short summary
This study explored the quantitative contribution of agricultural intensification and climate change to the sediment load of a small agricultural watershed. Rather than a change in climatic conditions, changes in the land structure notably altered sediment concentrations under high-flow conditions, thereby contributing most to the increase in annual sediment loads. More consideration of land structure improvement is required when combating the transfer of soil from land to water.
Femke A. Jansen, Remko Uijlenhoet, Cor M. J. Jacobs, and Adriaan J. Teuling
Hydrol. Earth Syst. Sci., 26, 2875–2898, https://doi.org/10.5194/hess-26-2875-2022, https://doi.org/10.5194/hess-26-2875-2022, 2022
Short summary
Short summary
We studied the controls on open water evaporation with a focus on Lake IJssel, the Netherlands, by analysing eddy covariance observations over two summer periods at two locations at the borders of the lake. Wind speed and the vertical vapour pressure gradient can explain most of the variation in observed evaporation, which is in agreement with Dalton's model. We argue that the distinct characteristics of inland waterbodies need to be taken into account when parameterizing their evaporation.
Michael Kilgour Stewart, Uwe Morgenstern, and Ian Cartwright
Hydrol. Earth Syst. Sci., 25, 6333–6338, https://doi.org/10.5194/hess-25-6333-2021, https://doi.org/10.5194/hess-25-6333-2021, 2021
Short summary
Short summary
The combined use of deuterium and tritium to determine travel time distributions in streams is an important development in catchment hydrology (Rodriguez et al., 2021). This comment, however, argues that their results do not generally invalidate the truncation hypothesis of Stewart et al. (2010) (i.e. that stable isotopes underestimate travel times through catchments), as they imply, but asserts instead that the hypothesis still applies to many other catchments.
Maxime P. Boreux, Scott F. Lamoureux, and Brian F. Cumming
Hydrol. Earth Syst. Sci., 25, 6309–6332, https://doi.org/10.5194/hess-25-6309-2021, https://doi.org/10.5194/hess-25-6309-2021, 2021
Short summary
Short summary
The investigation of groundwater–lake-water interactions in highly permeable boreal terrain using several indicators showed that lowland lakes are embedded into the groundwater system and are thus relatively resilient to short-term hydroclimatic change, while upland lakes rely more on precipitation as their main water input, making them more sensitive to evaporative drawdown. This suggests that landscape position controls the vulnerability of lake-water levels to hydroclimatic change.
Christian Voigt, Karsten Schulz, Franziska Koch, Karl-Friedrich Wetzel, Ludger Timmen, Till Rehm, Hartmut Pflug, Nico Stolarczuk, Christoph Förste, and Frank Flechtner
Hydrol. Earth Syst. Sci., 25, 5047–5064, https://doi.org/10.5194/hess-25-5047-2021, https://doi.org/10.5194/hess-25-5047-2021, 2021
Short summary
Short summary
A continuously operating superconducting gravimeter at the Zugspitze summit is introduced to support hydrological studies of the Partnach spring catchment known as the Zugspitze research catchment. The observed gravity residuals reflect total water storage variations at the observation site. Hydro-gravimetric analysis show a high correlation between gravity and the snow water equivalent, with a gravimetric footprint of up to 4 km radius enabling integral insights into this high alpine catchment.
André Almagro, Paulo Tarso S. Oliveira, Antônio Alves Meira Neto, Tirthankar Roy, and Peter Troch
Hydrol. Earth Syst. Sci., 25, 3105–3135, https://doi.org/10.5194/hess-25-3105-2021, https://doi.org/10.5194/hess-25-3105-2021, 2021
Short summary
Short summary
We have collected and synthesized catchment attributes from multiple sources into an extensive dataset, the Catchment Attributes for Brazil (CABra). CABra contains streamflow and climate daily series for 735 catchments in the 1980–2010 period, aside from dozens of attributes of topography, climate, streamflow, groundwater, soil, geology, land cover, and hydrologic disturbance. The CABra intends to pave the way for a better understanding of catchments' behavior in Brazil and the world.
Anthony Michelon, Lionel Benoit, Harsh Beria, Natalie Ceperley, and Bettina Schaefli
Hydrol. Earth Syst. Sci., 25, 2301–2325, https://doi.org/10.5194/hess-25-2301-2021, https://doi.org/10.5194/hess-25-2301-2021, 2021
Short summary
Short summary
Rainfall observation remains a challenge, particularly in mountain environments. Unlike most studies which are model based, this analysis of the rainfall–runoff response of a 13.4 km2 alpine catchment is purely data based and relies on measurements from a network of 12 low-cost rain gauges over 3 months. It assesses the importance of high-density rainfall observations in informing hydrological processes and helps in designing a permanent rain gauge network.
Galen Gorski and Margaret A. Zimmer
Hydrol. Earth Syst. Sci., 25, 1333–1345, https://doi.org/10.5194/hess-25-1333-2021, https://doi.org/10.5194/hess-25-1333-2021, 2021
Short summary
Short summary
Understanding when, where, and how nitrate is exported from watersheds is the key to addressing the challenges that excess nutrients pose. We analyzed daily nitrate and streamflow data for five nested, agricultural watersheds that export high levels of nitrate over a 4-year time period. Nutrient export patterns varied seasonally during baseflow but were stationary during stormflow. Additionally, anthropogenic and geologic factors drove nutrient export during both baseflow and stormflow.
Nicholas J. C. Doriean, William W. Bennett, John R. Spencer, Alexandra Garzon-Garcia, Joanne M. Burton, Peter R. Teasdale, David T. Welsh, and Andrew P. Brooks
Hydrol. Earth Syst. Sci., 25, 867–883, https://doi.org/10.5194/hess-25-867-2021, https://doi.org/10.5194/hess-25-867-2021, 2021
Short summary
Short summary
Gully erosion is a major contributor to suspended sediment and associated nutrient pollution (e.g. gullies generate approximately 40 % of the sediment pollution impacting the Great Barrier Reef). This study used a new method of monitoring to demonstrate how large-scale earthworks used to remediated large gullies (i.e. eroding landforms > 1 ha) can drastically improve the water quality of connected waterways and, thus, protect vulnerable ecosystems in downstream-receiving waters.
Elvira Mächler, Anham Salyani, Jean-Claude Walser, Annegret Larsen, Bettina Schaefli, Florian Altermatt, and Natalie Ceperley
Hydrol. Earth Syst. Sci., 25, 735–753, https://doi.org/10.5194/hess-25-735-2021, https://doi.org/10.5194/hess-25-735-2021, 2021
Short summary
Short summary
In this study, we collected water from an Alpine catchment in Switzerland and compared the genetic information of eukaryotic organisms conveyed by eDNA with the hydrologic information conveyed by naturally occurring hydrologic tracers. At the intersection of two disciplines, our study provides complementary knowledge gains and identifies the next steps to be addressed for using eDNA to achieve complementary insights into Alpine water sources.
Jana von Freyberg, Julia L. A. Knapp, Andrea Rücker, Bjørn Studer, and James W. Kirchner
Hydrol. Earth Syst. Sci., 24, 5821–5834, https://doi.org/10.5194/hess-24-5821-2020, https://doi.org/10.5194/hess-24-5821-2020, 2020
Short summary
Short summary
Automated water samplers are often used to collect precipitation and streamwater samples for subsequent isotope analysis, but the isotopic signal of these samples may be altered due to evaporative fractionation occurring during the storage inside the autosamplers in the field. In this article we present and evaluate a cost-efficient modification to the Teledyne ISCO automated water sampler that prevents isotopic enrichment through evaporative fractionation of the water samples.
Kolbjørn Engeland, Anna Aano, Ida Steffensen, Eivind Støren, and Øyvind Paasche
Hydrol. Earth Syst. Sci., 24, 5595–5619, https://doi.org/10.5194/hess-24-5595-2020, https://doi.org/10.5194/hess-24-5595-2020, 2020
Short summary
Short summary
We combine systematic, historical, and paleo information to obtain flood information from the last 10 300 years for the Glomma River in Norway. We identify periods with increased flood activity (4000–2000 years ago and the recent 1000 years) that correspond broadly to periods with low summer temperatures and glacier growth. The design floods in Glomma were more than 20 % higher during the 18th century than today. We suggest that trends in flood variability are linked to snow in late spring.
James W. Kirchner, Sarah E. Godsey, Madeline Solomon, Randall Osterhuber, Joseph R. McConnell, and Daniele Penna
Hydrol. Earth Syst. Sci., 24, 5095–5123, https://doi.org/10.5194/hess-24-5095-2020, https://doi.org/10.5194/hess-24-5095-2020, 2020
Short summary
Short summary
Streams and groundwaters often show daily cycles in response to snowmelt and evapotranspiration. These typically have a roughly 6 h time lag, which is often interpreted as a travel-time lag. Here we show that it is instead primarily a phase lag that arises because aquifers integrate their inputs over time. We further show how these cycles shift seasonally, mirroring the springtime retreat of snow cover to higher elevations and the seasonal advance and retreat of photosynthetic activity.
Jasper Foets, Carlos E. Wetzel, Núria Martínez-Carreras, Adriaan J. Teuling, Jean-François Iffly, and Laurent Pfister
Hydrol. Earth Syst. Sci., 24, 4709–4725, https://doi.org/10.5194/hess-24-4709-2020, https://doi.org/10.5194/hess-24-4709-2020, 2020
Short summary
Short summary
Diatoms (microscopic algae) are regarded as useful tracers in catchment hydrology. However, diatom analysis is labour-intensive; therefore, only a limited number of samples can be analysed. To reduce this number, we explored the potential for a time-integrated mass-flux sampler to provide a representative sample of the diatom assemblage for a whole storm run-off event. Our results indicate that the Phillips sampler did indeed sample representative communities during two of the three events.
Leonie Kiewiet, Ilja van Meerveld, Manfred Stähli, and Jan Seibert
Hydrol. Earth Syst. Sci., 24, 3381–3398, https://doi.org/10.5194/hess-24-3381-2020, https://doi.org/10.5194/hess-24-3381-2020, 2020
Short summary
Short summary
The sources of stream water are important, for instance, for predicting floods. The connectivity between streams and different (ground-)water sources can change during rain events, which affects the stream water composition. We investigated this for stream water sampled during four events and found that stream water came from different sources. The stream water composition changed gradually, and we showed that changes in solute concentrations could be partly linked to changes in connectivity.
Lu Zhuo, Qiang Dai, Binru Zhao, and Dawei Han
Hydrol. Earth Syst. Sci., 24, 2577–2591, https://doi.org/10.5194/hess-24-2577-2020, https://doi.org/10.5194/hess-24-2577-2020, 2020
Short summary
Short summary
Soil moisture plays an important role in hydrological modelling. However, most existing in situ observation networks rarely provide sufficient coverage to capture soil moisture variations. Clearly, there is a need to develop a systematic approach, so that with the minimal number of sensors the soil moisture information could be captured accurately. In this study, a simple and low-data requirement method is proposed (WRF, PCA, CA), which can provide very efficient soil moisture estimations.
Abraham J. Gibson, Danielle C. Verdon-Kidd, Greg R. Hancock, and Garry Willgoose
Hydrol. Earth Syst. Sci., 24, 1985–2002, https://doi.org/10.5194/hess-24-1985-2020, https://doi.org/10.5194/hess-24-1985-2020, 2020
Short summary
Short summary
To be better prepared for drought, we need to be able to characterize how they begin, translate to on-ground impacts and how they end. We created a 100-year drought record for an area on the east coast of Australia and compared this with soil moisture and vegetation data. Drought reduces vegetation and soil moisture, but recovery rates are different across different catchments. Our methods can be universally applied and show the need to develop area-specific data to inform drought management.
Clemens Messerschmid, Martin Sauter, and Jens Lange
Hydrol. Earth Syst. Sci., 24, 887–917, https://doi.org/10.5194/hess-24-887-2020, https://doi.org/10.5194/hess-24-887-2020, 2020
Short summary
Short summary
Recharge assessment in the shared transboundary Western Aquifer Basin is highly relevant, scientifically as well as hydropolitically (in Israeli–Palestinian water negotiations). Our unique combination of field-measured soil characteristics and soil moisture time series with soil moisture saturation excess modelling provides a new basis for the spatial differentiation of formation-specific groundwater recharge (at any scale), applicable also in other previously ungauged basins around the world.
J. Nikolaus Callow, Matthew R. Hipsey, and Ryan I. J. Vogwill
Hydrol. Earth Syst. Sci., 24, 717–734, https://doi.org/10.5194/hess-24-717-2020, https://doi.org/10.5194/hess-24-717-2020, 2020
Short summary
Short summary
Secondary dryland salinity is a global land degradation issue. Our understanding of causal processes is adapted from wet and hydrologically connected landscapes and concludes that low end-of-catchment runoff indicates land clearing alters water balance in favour of increased infiltration and rising groundwater that bring salts to the surface causing salinity. This study shows surface flows play an important role in causing valley floor recharge and dryland salinity in low-gradient landscapes.
Nils Michelsen, Gerrit Laube, Jan Friesen, Stephan M. Weise, Ali Bakhit Ali Bait Said, and Thomas Müller
Hydrol. Earth Syst. Sci., 23, 2637–2645, https://doi.org/10.5194/hess-23-2637-2019, https://doi.org/10.5194/hess-23-2637-2019, 2019
Short summary
Short summary
Most commercial automatic rain samplers are costly and do not prevent evaporation from the collection bottles. Hence, we have developed a microcontroller-based collector enabling timer-actuated integral rain sampling. The simple, low-cost device is robust and effectively minimizes post-sampling evaporation. The excellent performance of the collector during an evaporation experiment in a lab oven suggests that even multi-week field deployments in warm climates are feasible.
Michael Engel, Daniele Penna, Giacomo Bertoldi, Gianluca Vignoli, Werner Tirler, and Francesco Comiti
Hydrol. Earth Syst. Sci., 23, 2041–2063, https://doi.org/10.5194/hess-23-2041-2019, https://doi.org/10.5194/hess-23-2041-2019, 2019
Short summary
Short summary
Hydrometric and geochemical dynamics are controlled by interplay of meteorological conditions, topography and geological heterogeneity. Nivo-meteorological indicators (such as global solar radiation, temperature and decreasing snow depth) explain monthly conductivity and isotopic dynamics best. These insights are important for better understanding hydrochemical responses of glacierized catchments under a changing cryosphere.
Andrew D. Wickert, Chad T. Sandell, Bobby Schulz, and Gene-Hua Crystal Ng
Hydrol. Earth Syst. Sci., 23, 2065–2076, https://doi.org/10.5194/hess-23-2065-2019, https://doi.org/10.5194/hess-23-2065-2019, 2019
Short summary
Short summary
Measuring Earth's changing environment is a critical part of natural science, but to date most of the equipment to do so is expensive, proprietary, and difficult to customize. We addressed this challenge by developing and deploying the ALog, a low-power, lightweight, Arduino-compatible data logger. We present our hardware schematics and layouts, as well as our customizable code library that operates the ALog and helps users to link it to off-the-shelf sensors.
Bruce C. Scott-Shaw and Colin S. Everson
Hydrol. Earth Syst. Sci., 23, 1553–1565, https://doi.org/10.5194/hess-23-1553-2019, https://doi.org/10.5194/hess-23-1553-2019, 2019
Short summary
Short summary
The research undertaken for this study has allowed for an accurate direct comparison of indigenous and introduced tree water use. The measurements of trees growing in the understorey indicate significant water use in the subcanopy layer. The results showed that individual tree water use is largely inter-species specific. The introduced species remain active during the dry winter periods, resulting in their cumulative water use being significantly greater than that of the indigenous species.
Barbara Glaser, Marta Antonelli, Marco Chini, Laurent Pfister, and Julian Klaus
Hydrol. Earth Syst. Sci., 22, 5987–6003, https://doi.org/10.5194/hess-22-5987-2018, https://doi.org/10.5194/hess-22-5987-2018, 2018
Short summary
Short summary
We demonstrate how thermal infrared images can be used for mapping the appearance and disappearance of water at the surface. The use of thermal infrared images allows for mapping this appearance and disappearance for various temporal and spatial resolutions, and the images can be understood intuitively. We explain the necessary steps in detail, from image acquisition to final processing, by relying on image examples and experience from an 18-month mapping campaign.
Simon Etter, Barbara Strobl, Jan Seibert, and H. J. Ilja van Meerveld
Hydrol. Earth Syst. Sci., 22, 5243–5257, https://doi.org/10.5194/hess-22-5243-2018, https://doi.org/10.5194/hess-22-5243-2018, 2018
Short summary
Short summary
To evaluate the potential value of streamflow estimates for hydrological model calibration, we created synthetic streamflow datasets in various temporal resolutions based on the errors in streamflow estimates of 136 citizens. Our results show that streamflow estimates of untrained citizens are too inaccurate to be useful for model calibration. If, however, the errors can be reduced by training or filtering, the estimates become useful if also a sufficient number of estimates are available.
Doris Duethmann and Günter Blöschl
Hydrol. Earth Syst. Sci., 22, 5143–5158, https://doi.org/10.5194/hess-22-5143-2018, https://doi.org/10.5194/hess-22-5143-2018, 2018
Short summary
Short summary
We analyze changes in catchment evaporation estimated from the water balances of 156 catchments in Austria over 1977–2014, as well as the possible causes of these changes. Our results show that catchment evaporation increased on average by 29 ± 14 mm yr−1 decade−1. We attribute this increase to changes in atmospheric demand (based on reference and pan evaporation), changes in vegetation (quantified by a satellite-based vegetation index), and changes in precipitation.
Arno Hartmann, Marc Luetscher, Ralf Wachter, Philipp Holz, Elisabeth Eiche, and Thomas Neumann
Hydrol. Earth Syst. Sci., 22, 4281–4293, https://doi.org/10.5194/hess-22-4281-2018, https://doi.org/10.5194/hess-22-4281-2018, 2018
Short summary
Short summary
We have developed a new mobile automated water sampling device for environmental research and other applications where waters need to be tested for compliance with environmental/health regulations. It has two main advantages over similar devices: firstly, it injects water samples directly into airtight vials to prevent any change in sample properties through contamination, evaporation and gas exchange. Secondly, it can hold up to 160 sample vials, while other devices only hold up to 24 vials.
Yuedong Guo, Changchun Song, Wenwen Tan, Xianwei Wang, and Yongzheng Lu
Hydrol. Earth Syst. Sci., 22, 1081–1093, https://doi.org/10.5194/hess-22-1081-2018, https://doi.org/10.5194/hess-22-1081-2018, 2018
Short summary
Short summary
The study examined dynamics of DOC export from a permafrost peatland catchment located in northeastern China. The findings indicated that the DOC export is a transport-limited process and the DOC load was significant for the net carbon balance in the studied catchment. The flowpath shift process is key to observed DOC concentration, resources and chemical characteristics in discharge. Permafrost degradation would likely elevate the proportion of microbe-originated DOC in baseflow.
Maurizio Mazzoleni, Vivian Juliette Cortes Arevalo, Uta Wehn, Leonardo Alfonso, Daniele Norbiato, Martina Monego, Michele Ferri, and Dimitri P. Solomatine
Hydrol. Earth Syst. Sci., 22, 391–416, https://doi.org/10.5194/hess-22-391-2018, https://doi.org/10.5194/hess-22-391-2018, 2018
Short summary
Short summary
We investigate the usefulness of assimilating crowdsourced observations from a heterogeneous network of sensors for different scenarios of citizen involvement levels during the flood event occurred in the Bacchiglione catchment in May 2013. We achieve high model performance by integrating crowdsourced data, in particular from citizens motivated by their feeling of belonging to a community. Satisfactory model performance can still be obtained even for decreasing citizen involvement over time.
Daniele P. Viero
Hydrol. Earth Syst. Sci., 22, 171–177, https://doi.org/10.5194/hess-22-171-2018, https://doi.org/10.5194/hess-22-171-2018, 2018
Fayçal Rejiba, Cyril Schamper, Antoine Chevalier, Benoit Deleplancque, Gaghik Hovhannissian, Julien Thiesson, and Pierre Weill
Hydrol. Earth Syst. Sci., 22, 159–170, https://doi.org/10.5194/hess-22-159-2018, https://doi.org/10.5194/hess-22-159-2018, 2018
Short summary
Short summary
The internal variability of paleomeanders strongly influence water fluxes in alluvial plains. This study presents the results of a hydrogeophysical investigation that provide a very detailed characterization of the geometry of a wide paleomeander. The presented case study, situated in the Seine River basin (France), represents a common sedimentary and geomorphological structure in alluvial plains worldwide.
Sibylle Kathrin Hassler, Markus Weiler, and Theresa Blume
Hydrol. Earth Syst. Sci., 22, 13–30, https://doi.org/10.5194/hess-22-13-2018, https://doi.org/10.5194/hess-22-13-2018, 2018
Short summary
Short summary
We use sap velocity measurements from 61 trees on 132 days to gain knowledge about the controls of landscape-scale transpiration, distinguishing tree-, stand- and site-specific controls on sap velocity and sap flow patterns and examining their dynamics during the vegetation period. Our results show that these patterns are not exclusively determined by tree characteristics. Thus, including site characteristics such as geology and aspect could be beneficial for modelling or management purposes.
Paul Floury, Jérôme Gaillardet, Eric Gayer, Julien Bouchez, Gaëlle Tallec, Patrick Ansart, Frédéric Koch, Caroline Gorge, Arnaud Blanchouin, and Jean-Louis Roubaty
Hydrol. Earth Syst. Sci., 21, 6153–6165, https://doi.org/10.5194/hess-21-6153-2017, https://doi.org/10.5194/hess-21-6153-2017, 2017
Short summary
Short summary
We present a new prototype
lab in the fieldnamed River Lab (RL) designed for water quality monitoring to perform a complete analysis at sub-hourly frequency of major dissolved species in river water. The article is an analytical paper to present the proof of concept, its performances and improvements. Our tests reveal a significant improvement of reproducibility compared to conventional analysis in the laboratory. First results are promising for understanding the critical zone.
Cited articles
Abramoff, R. Z. and Finzi, C.: Are above- and below-ground phenology in sync?, New Phytol., 205, 1054–1061, 2015.
Andréassian, V.: Waters and forests: from historical controversy to scientific debate, J. Hydrol., 291, 1–27, 2004.
Andréassian, V., Parent, E., and Michel, C.: A distribution-free test to detect gradual changes in watershed behaviour. Water Resour. Res., 39, 1252, https://doi.org/10.1029/2003WR002081, 2003.
Beck, H. E., Bruijnzeel, L. A., van Dijk, A. I. J. M., McVicar, T. R., Scatena, F. N., and Schellekens, J.: The impact of forest regeneration on streamflow in 12 mesoscale humid tropical catchments, Hydrol. Earth Syst. Sci., 17, 2613–2635, https://doi.org/10.5194/hess-17-2613-2013, 2013.
Bradshaw, C. J. A., Sodhi, N. S., and Brook, B. W.: Tropical turmoil: a biodiversity tragedy in progress, Front. Ecol. Environ., 7, 79–87, 2009.
Brown, A. E., Zhang, L., McMahon, T. A., Western, A. W., and Vertessy, R. A.: A review of paired catchment studies for determining changes in water yield resulting from alterations in vegetation, J. Hydrol., 310, 28–61, 2005.
Bruijnzeel, L. A.: Hydrological functions of tropical forests: not seeing the soil for the trees?, Agr. Ecosyst. Environ., 1004, 185–228, 2004.
Calder, I. R.: Forests and water – Ensuring forest benefits outweigh water costs, Forest Ecol. Manag., 251, 110–120, 2007.
Calder, I. R., Rosier, P. T. W., Prasanna, K. T., and Parameswarappa, S.: Eucalyptus water use greater than rainfall input – a possible explanation from southern India. Hydrol. Earth Syst. Sci., 1, 249–256, https://doi.org/10.5194/hess-1-249-1997, 1997.
Chaplot, V., Coadou le Brozec, E., Silvera, N., and Valentin, C.: Spatial and temporal assessment of linear erosion in catchments under sloping lands of Northern Laos, Catena, 63, 167–184, 2005.
Chazdon, R. L.: Beyond deforestation: restoring forests and ecosystem services on degraded lands. Science, 320, 1458, https://doi.org/10.1126/science.1155365, 2008.
Clément, F., Amezaga, J. M., Orange, D., and Tran Duc, T.: The impact of government policies on land use in Northern Vietnam: an institutional approach for understanding farmer decisions, IWMI Research Report, 112, 31 pp., 2007.
Clément, F., Orange, D., Williams, M., Mulley, C., and Epprecht, M.: Drivers of afforestation in Northern Vietnam: Assessing local variations using geographically weighted regression, Appl. Geogr., 29, 561–576, 2009.
Coron, L., Andreassian, V., Perrin, C., Lerat, J., Vaze, J., Bourqui, M., and Hendrickx, F.: Crash testing hydrological models in contrasted climate conditions: An experiment on 216 Australian catchments, Water Resour. Res., 48, W05552, https://doi.org/10.1029/2011WR011721, 2012.
de Rouw, A., Soulileuth, B., and Huon, S.: Stable carbon isotope ratios in soil and vegetation shift with cultivation practices (Northern Laos), Agr. Ecosyst. Environ., 200, 161–168, 2015.
Douglas, I.: Hydrological investigations of forest disturbance and land cover impacts in South-East Asia: a review, Philos. T. R. Soc. B, 354, 1725–1738, 1999.
Dunin, F. X., Smith, C. J., and Denmead, O. T.: Hydrological change: reaping prosperity and pain in Australia, Hydrol. Earth Syst. Sci., 11, 77–95, https://doi.org/10.5194/hess-11-77-2007, 2007.
FAO: Global Forest Resources Assessment 2015. FAO Forestry Paper No. 1**. UN Food and Agriculture Organization, Rome, 56 pp., 2015.
Fernández-Moya, J., Alvarado, A., Forsythe, W., Ramírez, L., Algeet-Abarquero, N., and Marchamalo-Sacristán, M.: Soil erosion under teak (Tectona grandis L.f.) plantations: General patterns, assumptions and controversies. Catena, 123, 236–242, 2014.
Guardiola-Claramonte, M., Troch, P. A., Ziegler, A. D., Giambelluca, T. W., Durcik, M., Vogler, J. B., and Nullet, M. A.: Hydrologic effects of the expansion of rubber (Hevea brasiliensis) in a tropical catchment, Ecohydrology, 3, 306–314, 2010.
Hansen, M. C., Potapov, P. V., Moore, R., Hancher, M., Turubanova, S. A., Tyukavina, A., Thau, D., Stehman, S. V., Goetz, S. J., Loveland, T. R., Kommareddy, A., Egorov, A., Chini, L., Justice, C. O., and Townshend, J. R. G.: High-resolution global maps of 21st century forest cover change. Science, 342, 850-853, 2013.
Hawtree, D., Nunes, J. P., Keizer, J. J., Jacinto, R., Santos, J., Rial-Rivas, M. E., Boulet, A.-K., Tavares-Wahren, F., and Feger, K.-H.: Time series analysis of the long-term hydrologic impacts of afforestation in the Águeda watershed of north-central Portugal, Hydrol. Earth Syst. Sci., 19, 3033–3045, https://doi.org/10.5194/hess-19-3033-2015, 2015.
Homdee, T., Pongput, K., and Kanae, S.: Impacts of land cover changes on hydrologic responses. A case study of Chu River Basin, Thailand, Ann. J. Hydr. Eng.-JSCE, 55, 31–36, 2011.
Huon, S., de Rouw, A., Bonté, P., Robain, H., Valentin, C., Lefèvre, I., Girardin, C., Le Troquer, Y., Podwojewski, P., and Sengtaheuanghoung, O.: Long-term soil carbon loss and accumulation in a catchment following the conversion of forest to arable land in Northern Laos, Agr. Ecosyst. Environ., 160, 43–57, 2013.
Hurni, K., Hett, C., Heinimann, A., Messerli, P., and Wiesmann, U.: Dynamics of shifting cultivation landscapes in Northern Lao PDR between 2000 and 2009 based on an analysis of MODIS time series and Landsat images. Hum. Ecol., 41, 21–36, 2013.
Janeau, J. L., Gillard, L. C., Grellier, S., Jouquet, P., Le, Q. T. P., Luu, M. N. T., Ngo, A. Q., Orange, D., Pham, R. D., Tran, T. D., Tran, H. S., Trinh, D. A., Valentin, C., and Rochelle-Newall, E.: Soil erosion, dissolved organic carbon and nutrient losses under different land use systems in a small catchment in northern Vietnam, Agr. Water Manage., 146, 314–323, 2014.
Keenan, R. J., Reams, G. A., Achard, F., de Freitas, J. V., Grainger, A., and Lindquist, E.: Dynamics of global forest area: Results from the FAO Global Forest Resources Assessment 2015, Forest Ecol. Manag., 352, 9–20, 2015.
Konar, M., Todd, M. J., Muneepeerakul, R., Rinaldo, A., and Rodriguez-Iturbe, I.: Hydrology as a driver of biodiversity: controls on carrying capacity, niche formation, and dispersal, Adv. Water Resour., 51, 317–325, 2013.
Lacombe, G., Pierret, A., Hoanh, C. T., Sengtaheuanghoung, O., and Noble, A.: Conflict, migration and land-cover changes in Indochina: a hydrological assessment, Ecohydrology, 3, 382–391, 2010.
Lasdon, L. S. and Warren, A. D.: Generalized reduced gradient software for linear and nonlinear constrained problems, edited by: Greenberg, H., Design and Implementation for Optimization Software, Sijthoff/Noordhoff, The Netherlands, 363–397, 1979.
Maeght, J. L.: Effects of climate variability on shallow and deep root growth of mature rubber (Hevea brasiliensis) and teak (Tectona grandis) trees in South East Asian plantations, PhD Thesis, Montpellier II University, France, 204 pp., 2014.
Miura, S., Amacher, M., Hofer, T., San-Miguel-Ayanz, J., Ernawati, and Thackway, R.: Protective functions and ecosystem services of global forests in the past quarter-century, Forest Ecol. Manag., 352, 35–46, 2015.
Mouelhi, S., Michel, C., Perrin, C., and Andréassian, V.: Stepwise development of a two-parameter monthly water balance model, J. Hydrol., 318, 200–214, 2006.
Newby, J., Cramb, R., and Sakanphet, S.: Forest transitions and rural livelihoods: multiple pathways of smallholder teal expansion in Northern Laos. Land, 3, 482–503, 2014.
Patin, J., Mouche, E., Ribolzi, O., Chaplot, V., Sengtahevanghoung, O., Latsachak, K. O., Soulileuth, B., and Valentin, C.: Analysis of runoff production at the plot scale during a long-term survey of a small agricultural catchment in Lao PDR, J. Hydrol., 426–427, 79–92, 2012.
Podwojewski, P., Orange, D., Jouquet, P., Valentin, C., Nguyen, V. T., Janeau, J. L., and Tran, D. T.: Land-use impacts on surface runoff and soil detachment within agricultural sloping lands in Northern Vietnam, Catena, 74, 109–118, 2008.
Pushpalatha, R., Perrin, C., Le Moine, N., and Andréassian, V.: A review of efficiency criteria for evaluating low-flow simulations, J. Hydrol., 420–421, 171–182, 2012.
Ribolzi, O., Thiebaux, J. P., Bourdon, E., Briquet, J. P., Chaplot, V., Huon, S., Marchand, P., Mouche, E., Pierret, A., Robain, H., de Rouw, A., Sengtahevanghoung, O., Soulileuth, B., and Valentin, C.: Effect of fallow regrowth on stream water yield in a headwater catchment under shifting cultivation in Northern Lao PDR, Lao J. Agr. Forest., Management of Soil Erosion Consortium special, 52–71, 2008.
Sidle, R. C., Tani, M., and Ziegler, A. D.: Catchment processes in Southeast Asia: Atmospheric, hydrologic, erosion, nutrient cycling, and management effects, Forest Ecol. Manag., 224, 1–4, 2006.
Tanaka, N., Kume, T., Yoshifuji, N., Tanaka, K., Takizawa, H., Shiraki, K., Tantasirin, C., Tangtham, N., and Suzuki, M.: A review of evapotranspiration estimates from tropical forests in Thailand and adjacent regions, Agr. Forest Meteorol., 148, 807–819, 2008.
Thanapakpawin, P., Richey, J., Thomas, D., Rodda, S., Campbell, B., and Logsdon, M.: Effects of land-use change on the hydrologic regime of the Mae Chaem river basin, NW Thailand, J. Hydrol., 334, 215–230, 2006.
Valentin, C., Agus, F., Alamban, R., Boosaner, A., Bricquet, J. P., Chaplot, V., de Guzman, T., de Rouw, A., Janeau, J. L., Orange, D., Phachomphonh, K., Phai, D. D., Podwojewski, P., Ribolzi, O., Silvera, N., Subagyono, K., Thiébaux, J. P., Toan, T. D., and Vadari, T.: Runoff and sediment losses from 27 upland catchments in Southeast Asia: Impact of rapid land use changes and conservation practices. Agr. Ecosyst. Environ., 128, 225–238, 2008a.
Valentin, C., Lestrelin, G., Chanthavongsa, A., Phachomphon, K., De Rouw, A., Chanhphengxay, A., Chaplot, V., Bourdon, E., Bricquet, J. P., Marchand, P., Pierret, A., Ribolzi, O., and Thiebaux, P.: The MSEC project in the Lao PDR at a glance: biophysical and socio-economic background and project experimental set up, Lao J. Agr. Forest., Management of Soil Erosion Consortium special, 31–50, 2008b.
van Dijk, A. I. J. M., Peña-Arancibia, J. L., and (Sampurno) Bruijnzeel, L. A.: Land cover and water yield: inference problems when comparing catchments with mixed land cover, Hydrol. Earth Syst. Sci., 16, 3461–3473, https://doi.org/10.5194/hess-16-3461-2012, 2012.
Vyas, D., Mehta, N., Dinakaran, J., and Krishnayya, N. S. R.: Allometric equations for estimating leaf area index (LAI) of two important tropical species (Tectona grandis and Dendrocalamus strictus), J. Forest Res., 21, 197–200, 2010.
Wilcox, B. P. and Huang, Y.: Woody plant encroachment paradox: rivers rebound as degraded grasslands convert to woodlands, Geophys. Res. Lett., 37, L07402, https://doi.org/10.1029/2009GL041929, 2010.
Wohl, E., Barros, A., Brunsell, N., Chappell, N. A., Coe, M., Giambelluca, T., Goldsmith, S., Harmon, R., Hendrickx, J. M. H., Juvik, J., McDonnell, J., and Ogden, F.: The hydrology of the humid tropics, Nat. Clim. Change, 2, 655–662, 2012.
Zégre, N., Skaugset, A. E., Som, N. A., McDonnell, J. J., and Ganio, L. M.: In lieu of the paired catchment approach: hydrologic model change detection at the catchment scale, Water Resour. Res., 46, W11544, https://doi.org/10.1029/2009WR008601, 2010.
Ziegler, A. D., Giambelluca, T. W., and Tran, L. T.: Hydrological consequences of landscape fragmentation in mountainous northern Vietnam: evidence of accelerated overland flow generation, J. Hydrol., 287, 124–146, 2004.
Ziegler, A. D., Fox, J. M., and Webb, E. L.: Recognizing contemporary roles of swidden agriculture in transforming landscapes of Southeast Asia, Conserv. Biol., 25, 846–848, 2011.
Short summary
Laos and Vietnam have switched from net forest loss to net forest expansion between 1990 and 2015. Based on long-term field measurements of land use, river flows, and weather data, we demonstrate that forest expansion can have extreme, yet opposite, impacts on water resources, depending on how the newly established tree-based cover is managed. The conversion of annual crops to teak plantations in Laos or to naturally regrowing forests in Vietnam led to increased and decreased flows, respectively.
Laos and Vietnam have switched from net forest loss to net forest expansion between 1990 and...
