Articles | Volume 27, issue 18
https://doi.org/10.5194/hess-27-3393-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/hess-27-3393-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Dye-tracer-aided investigation of xylem water transport velocity distributions
Stefan Seeger
CORRESPONDING AUTHOR
Soil Physics, Department of Crop Sciences, University of Göttingen, Göttingen, Germany
Hydrology, Faculty of Environment and Natural Resources, University of Freiburg, Freiburg, Germany
Markus Weiler
Hydrology, Faculty of Environment and Natural Resources, University of Freiburg, Freiburg, Germany
Related authors
Jonas Pyschik, Stefan Seeger, Barbara Herbstritt, and Markus Weiler
Hydrol. Earth Syst. Sci., 29, 525–534, https://doi.org/10.5194/hess-29-525-2025, https://doi.org/10.5194/hess-29-525-2025, 2025
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We developed a device (named VapAuSa) that automates stable water isotope analysis. Stable water isotopes are a natural tracer that many researchers use to investigate water (re-)distribution processes in environmental systems. VapAuSa helps to analyse such environmental samples by automating a formerly tedious manual process, allowing for higher sample throughput. This enables larger sampling campaigns, as more samples can be processed before reaching their limited storage time.
Barbara Herbstritt, Benjamin Gralher, Stefan Seeger, Michael Rinderer, and Markus Weiler
Hydrol. Earth Syst. Sci., 27, 3701–3718, https://doi.org/10.5194/hess-27-3701-2023, https://doi.org/10.5194/hess-27-3701-2023, 2023
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We present a method to collect water vapor samples into bags in the field without an in-field analyser, followed by isotope analysis in the lab. This new method resolves even fine-scaled natural isotope variations. It combines low-cost and lightweight components for maximum spatial and temporal flexibility regarding environmental setups. Hence, it allows for sampling even in terrains that are rather difficult to access, enabling future extended isotope datasets in soil sciences and ecohydrology.
Annette Sophie Bösmeier, Iso Himmelsbach, and Stefan Seeger
Nat. Hazards Earth Syst. Sci., 22, 2963–2979, https://doi.org/10.5194/nhess-22-2963-2022, https://doi.org/10.5194/nhess-22-2963-2022, 2022
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Encouraging a systematic use of flood marks for more comprehensive flood risk management, we collected a large number of marks along the Kinzig, southwestern Germany, and tested them for plausibility and temporal continuance. Despite uncertainty, the marks appeared to be an overall consistent and practical source that may also increase flood risk awareness. A wide agreement between the current flood hazard maps and the collected flood marks moreover indicated a robust local hazard assessment.
David Mennekes, Michael Rinderer, Stefan Seeger, and Natalie Orlowski
Hydrol. Earth Syst. Sci., 25, 4513–4530, https://doi.org/10.5194/hess-25-4513-2021, https://doi.org/10.5194/hess-25-4513-2021, 2021
Short summary
Short summary
In situ stable water isotope measurements are a recently developed method to measure water movement from the soil through the plant to the atmosphere in high resolution and precision. Here, we present important advantages of the new method in comparison to commonly used measurement methods in an experimental setup. Overall, this method can help to answer research questions such as plant responses to climate change with potentially shifting water availability or temperatures.
Stefan Seeger and Markus Weiler
Biogeosciences, 18, 4603–4627, https://doi.org/10.5194/bg-18-4603-2021, https://doi.org/10.5194/bg-18-4603-2021, 2021
Short summary
Short summary
We developed a setup for fully automated in situ measurements of stable water isotopes in soil and the stems of fully grown trees. We used this setup in a 12-week field campaign to monitor the propagation of a labelling pulse from the soil up to a stem height of 8 m.
We could observe trees shifting their main water uptake depths multiple times, depending on water availability.
The gained knowledge about the temporal dynamics can help to improve water uptake models and future study designs.
Maria Staudinger, Stefan Seeger, Barbara Herbstritt, Michael Stoelzle, Jan Seibert, Kerstin Stahl, and Markus Weiler
Earth Syst. Sci. Data, 12, 3057–3066, https://doi.org/10.5194/essd-12-3057-2020, https://doi.org/10.5194/essd-12-3057-2020, 2020
Short summary
Short summary
The data set CH-IRP provides isotope composition in precipitation and streamflow from 23 Swiss catchments, being unique regarding its long-term multi-catchment coverage along an alpine–pre-alpine gradient. CH-IRP contains fortnightly time series of stable water isotopes from streamflow grab samples complemented by time series in precipitation. Sampling conditions, catchment and climate information, lab standards and errors are provided together with areal precipitation and catchment boundaries.
Jonas Pyschik and Markus Weiler
EGUsphere, https://doi.org/10.5194/egusphere-2025-2411, https://doi.org/10.5194/egusphere-2025-2411, 2025
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This study introduces a new method of detecting how water moves quickly through certain paths in soil, bypassing the usual, slower flow. By analysing natural water markers in soil samples taken at different depths, we identified unusual flow patterns. Our method is simple and non-invasive, and can be used to cover large areas. This helps us to better understand how water travels through the ground, which is important for managing water resources and protecting the environment.
Heinke Paulsen and Markus Weiler
Hydrol. Earth Syst. Sci., 29, 2309–2319, https://doi.org/10.5194/hess-29-2309-2025, https://doi.org/10.5194/hess-29-2309-2025, 2025
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This technical note describes the development of a weighing forest floor grid lysimeter. The device is needed to investigate the dynamics of the water balance components of the organic layer in forests, quantifying precipitation, drainage, evaporation, and storage. We designed a setup that can be easily rebuilt and that is cost-effective, which allows for customized applications. Performance metrics from laboratory results and initial field data are presented.
Markus Weiler, Julia Krumm, Ingo Haag, Hannes Leistert, Max Schmit, Andreas Steinbrich, and Andreas Hänsler
EGUsphere, https://doi.org/10.5194/egusphere-2025-1519, https://doi.org/10.5194/egusphere-2025-1519, 2025
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Pluvial (flash) floods, caused by intense local rainfall, result in surface runoff and overland flow, making them different from fluvial floods. A new Pluvial Flood Index (PFI) combines precipitation, hydrological, and hydrodynamic processes to assess surface flooding hazards. The PFI, based on flood hazard areas, helps forecast flash floods and supports real-time warning systems, aiding municipal decision-making, preparedness, and planning.
Jonas Pyschik, Stefan Seeger, Barbara Herbstritt, and Markus Weiler
Hydrol. Earth Syst. Sci., 29, 525–534, https://doi.org/10.5194/hess-29-525-2025, https://doi.org/10.5194/hess-29-525-2025, 2025
Short summary
Short summary
We developed a device (named VapAuSa) that automates stable water isotope analysis. Stable water isotopes are a natural tracer that many researchers use to investigate water (re-)distribution processes in environmental systems. VapAuSa helps to analyse such environmental samples by automating a formerly tedious manual process, allowing for higher sample throughput. This enables larger sampling campaigns, as more samples can be processed before reaching their limited storage time.
Robin Schwemmle, Hannes Leistert, Andreas Steinbrich, and Markus Weiler
Geosci. Model Dev., 17, 5249–5262, https://doi.org/10.5194/gmd-17-5249-2024, https://doi.org/10.5194/gmd-17-5249-2024, 2024
Short summary
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The new process-based hydrological toolbox model, RoGeR (https://roger.readthedocs.io/), can be used to estimate the components of the hydrological cycle and the related travel times of pollutants through parts of the hydrological cycle. These estimations may contribute to effective water resources management. This paper presents the toolbox concept and provides a simple example of providing estimations to water resources management.
Barbara Herbstritt, Benjamin Gralher, Stefan Seeger, Michael Rinderer, and Markus Weiler
Hydrol. Earth Syst. Sci., 27, 3701–3718, https://doi.org/10.5194/hess-27-3701-2023, https://doi.org/10.5194/hess-27-3701-2023, 2023
Short summary
Short summary
We present a method to collect water vapor samples into bags in the field without an in-field analyser, followed by isotope analysis in the lab. This new method resolves even fine-scaled natural isotope variations. It combines low-cost and lightweight components for maximum spatial and temporal flexibility regarding environmental setups. Hence, it allows for sampling even in terrains that are rather difficult to access, enabling future extended isotope datasets in soil sciences and ecohydrology.
Andreas Hänsler and Markus Weiler
Hydrol. Earth Syst. Sci., 26, 5069–5084, https://doi.org/10.5194/hess-26-5069-2022, https://doi.org/10.5194/hess-26-5069-2022, 2022
Short summary
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Spatially explicit quantification of design storms is essential for flood risk assessment and planning. However, available datasets are mainly based on spatially interpolated station-based design storms. Since the spatial interpolation of the data inherits a large potential for uncertainty, we develop an approach to be able to derive spatially explicit design storms on the basis of weather radar data. We find that our approach leads to an improved spatial representation of design storms.
Anne Hartmann, Markus Weiler, Konrad Greinwald, and Theresa Blume
Hydrol. Earth Syst. Sci., 26, 4953–4974, https://doi.org/10.5194/hess-26-4953-2022, https://doi.org/10.5194/hess-26-4953-2022, 2022
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Analyzing the impact of soil age and rainfall intensity on vertical subsurface flow paths in calcareous soils, with a special focus on preferential flow occurrence, shows how water flow paths are linked to the organization of evolving landscapes. The observed increase in preferential flow occurrence with increasing moraine age provides important but rare data for a proper representation of hydrological processes within the feedback cycle of the hydro-pedo-geomorphological system.
Annette Sophie Bösmeier, Iso Himmelsbach, and Stefan Seeger
Nat. Hazards Earth Syst. Sci., 22, 2963–2979, https://doi.org/10.5194/nhess-22-2963-2022, https://doi.org/10.5194/nhess-22-2963-2022, 2022
Short summary
Short summary
Encouraging a systematic use of flood marks for more comprehensive flood risk management, we collected a large number of marks along the Kinzig, southwestern Germany, and tested them for plausibility and temporal continuance. Despite uncertainty, the marks appeared to be an overall consistent and practical source that may also increase flood risk awareness. A wide agreement between the current flood hazard maps and the collected flood marks moreover indicated a robust local hazard assessment.
Nils Hinrich Kaplan, Theresa Blume, and Markus Weiler
Hydrol. Earth Syst. Sci., 26, 2671–2696, https://doi.org/10.5194/hess-26-2671-2022, https://doi.org/10.5194/hess-26-2671-2022, 2022
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This study is analyses how characteristics of precipitation events and soil moisture and temperature dynamics during these events can be used to model the associated streamflow responses in intermittent streams. The models are used to identify differences between the dominant controls of streamflow intermittency in three distinct geologies of the Attert catchment, Luxembourg. Overall, soil moisture was found to be the most important control of intermittent streamflow in all geologies.
Benjamin Gralher, Barbara Herbstritt, and Markus Weiler
Hydrol. Earth Syst. Sci., 25, 5219–5235, https://doi.org/10.5194/hess-25-5219-2021, https://doi.org/10.5194/hess-25-5219-2021, 2021
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We scrutinized the quickest currently available method for stable isotope analysis of matrix-bound water. Simulating common procedures, we demonstrated the limits of certain materials currently used and identified a reliable and cost-efficient alternative. Further, we calculated the optimum proportions of important protocol aspects critical for precise and accurate analyses. Our unifying protocol suggestions increase data quality and comparability as well as the method's general applicability.
David Mennekes, Michael Rinderer, Stefan Seeger, and Natalie Orlowski
Hydrol. Earth Syst. Sci., 25, 4513–4530, https://doi.org/10.5194/hess-25-4513-2021, https://doi.org/10.5194/hess-25-4513-2021, 2021
Short summary
Short summary
In situ stable water isotope measurements are a recently developed method to measure water movement from the soil through the plant to the atmosphere in high resolution and precision. Here, we present important advantages of the new method in comparison to commonly used measurement methods in an experimental setup. Overall, this method can help to answer research questions such as plant responses to climate change with potentially shifting water availability or temperatures.
Jan Greiwe, Markus Weiler, and Jens Lange
Biogeosciences, 18, 4705–4715, https://doi.org/10.5194/bg-18-4705-2021, https://doi.org/10.5194/bg-18-4705-2021, 2021
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We analyzed variability in diel nitrate patterns at three locations in a lowland stream. Comparison of time lags between monitoring sites with water travel time indicated that diel patterns were created by in-stream processes rather than transported downstream from an upstream point of origin. Most of the patterns (70 %) could be explained by assimilatory nitrate uptake. The remaining patterns suggest seasonally varying dominance and synchronicity of different biochemical processes.
Stefan Seeger and Markus Weiler
Biogeosciences, 18, 4603–4627, https://doi.org/10.5194/bg-18-4603-2021, https://doi.org/10.5194/bg-18-4603-2021, 2021
Short summary
Short summary
We developed a setup for fully automated in situ measurements of stable water isotopes in soil and the stems of fully grown trees. We used this setup in a 12-week field campaign to monitor the propagation of a labelling pulse from the soil up to a stem height of 8 m.
We could observe trees shifting their main water uptake depths multiple times, depending on water availability.
The gained knowledge about the temporal dynamics can help to improve water uptake models and future study designs.
Andreas Hänsler and Markus Weiler
Hydrol. Earth Syst. Sci. Discuss., https://doi.org/10.5194/hess-2021-366, https://doi.org/10.5194/hess-2021-366, 2021
Manuscript not accepted for further review
Short summary
Short summary
Spatially explicit quantification on design storms are essential for flood risk assessment. However this information can be only achieved from substantially long records of rainfall measurements, usually only available for a few stations. Hence, design storms estimates from these few stations are then spatially interpolated leading to a major source of uncertainty. Therefore we defined a methodology to extend spatially explicit weather radar data to be used for the estimation of design storms.
Anne Hartmann, Markus Weiler, Konrad Greinwald, and Theresa Blume
Hydrol. Earth Syst. Sci. Discuss., https://doi.org/10.5194/hess-2021-242, https://doi.org/10.5194/hess-2021-242, 2021
Manuscript not accepted for further review
Short summary
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Our field observation-based examination of flow path evolution, soil formation and vegetation succession across ten millennia on calcareous parent material shows how water flow paths and subsurface water storage are linked to the organization of evolving landscapes. We provide important but rare data and observations for a proper handling of hydrologic processes and their role within the feedback cycle of the hydro-pedo-geomorphological system.
Axel Schaffitel, Tobias Schuetz, and Markus Weiler
Geosci. Model Dev., 14, 2127–2142, https://doi.org/10.5194/gmd-14-2127-2021, https://doi.org/10.5194/gmd-14-2127-2021, 2021
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This paper presents FluSM, an algorithm to derive the water balance from soil moisture and metrological measurements. This data-driven water balance framework uses soil moisture as an input and therefore is applicable for cases with unclear processes and lacking parameters. In a case study, we apply FluSM to derive the water balance of 15 different permeable pavements under field conditions. These findings are of special interest for urban hydrology.
Robin Schwemmle, Dominic Demand, and Markus Weiler
Hydrol. Earth Syst. Sci., 25, 2187–2198, https://doi.org/10.5194/hess-25-2187-2021, https://doi.org/10.5194/hess-25-2187-2021, 2021
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A better understanding of the reasons why model performance is unsatisfying represents a crucial part for meaningful model evaluation. We propose the novel diagnostic efficiency (DE) measure and diagnostic polar plots. The proposed evaluation approach provides a diagnostic tool for model developers and model users and facilitates interpretation of model performance.
Michael Rinderer, Jaane Krüger, Friederike Lang, Heike Puhlmann, and Markus Weiler
Biogeosciences, 18, 1009–1027, https://doi.org/10.5194/bg-18-1009-2021, https://doi.org/10.5194/bg-18-1009-2021, 2021
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We quantified the lateral and vertical subsurface flow (SSF) and P concentrations of three beech forest plots with contrasting soil properties during sprinkling experiments. Vertical SSF was 2 orders of magnitude larger than lateral SSF, and both consisted mainly of pre-event water. P concentrations in SSF were high during the first 1 to 2 h (nutrient flushing) but nearly constant thereafter. This suggests that P in the soil solution was replenished fast by mineral or organic sources.
Merle Koelbing, Tobias Schuetz, and Markus Weiler
Hydrol. Earth Syst. Sci. Discuss., https://doi.org/10.5194/hess-2021-24, https://doi.org/10.5194/hess-2021-24, 2021
Revised manuscript not accepted
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Based on a unique and comprehensive data set of urban micro-meteorological variables, which were observed with a mobile climate station, we developed a new method to transfer mesoscale reference potential evapotranspiration to the urban microscale in street canyons. Our findings can be transferred easily to existing urban hydrologic models to improve modelling results with a more precise estimate of potential evapotranspiration on street level.
Anne Hartmann, Markus Weiler, and Theresa Blume
Earth Syst. Sci. Data, 12, 3189–3204, https://doi.org/10.5194/essd-12-3189-2020, https://doi.org/10.5194/essd-12-3189-2020, 2020
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Our analysis of soil physical and hydraulic properties across two soil chronosequences of 10 millennia in the Swiss Alps provides important observation of the evolution of soil hydraulic behavior. A strong co-evolution of soil physical and hydraulic properties was revealed by the observed change of fast-draining coarse-textured soils to slow-draining soils with a high water-holding capacity in correlation with a distinct change in structural properties and organic matter content.
Daniel Beiter, Markus Weiler, and Theresa Blume
Hydrol. Earth Syst. Sci., 24, 5713–5744, https://doi.org/10.5194/hess-24-5713-2020, https://doi.org/10.5194/hess-24-5713-2020, 2020
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We investigated the interactions between streams and their adjacent hillslopes in terms of water flow. It could be revealed that soil structure has a strong influence on how hillslopes connect to the streams, while the groundwater table tells us a lot about when the two connect. This observation could be used to improve models that try to predict whether or not hillslopes are in a state where a rain event will be likely to produce a flood in the stream.
Maria Staudinger, Stefan Seeger, Barbara Herbstritt, Michael Stoelzle, Jan Seibert, Kerstin Stahl, and Markus Weiler
Earth Syst. Sci. Data, 12, 3057–3066, https://doi.org/10.5194/essd-12-3057-2020, https://doi.org/10.5194/essd-12-3057-2020, 2020
Short summary
Short summary
The data set CH-IRP provides isotope composition in precipitation and streamflow from 23 Swiss catchments, being unique regarding its long-term multi-catchment coverage along an alpine–pre-alpine gradient. CH-IRP contains fortnightly time series of stable water isotopes from streamflow grab samples complemented by time series in precipitation. Sampling conditions, catchment and climate information, lab standards and errors are provided together with areal precipitation and catchment boundaries.
Nils Hinrich Kaplan, Theresa Blume, and Markus Weiler
Hydrol. Earth Syst. Sci., 24, 5453–5472, https://doi.org/10.5194/hess-24-5453-2020, https://doi.org/10.5194/hess-24-5453-2020, 2020
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In recent decades the demand for detailed information of spatial and temporal dynamics of the stream network has grown in the fields of eco-hydrology and extreme flow prediction. We use temporal streamflow intermittency data obtained at various sites using innovative sensing technology as well as spatial predictors to predict and map probabilities of streamflow intermittency. This approach has the potential to provide intermittency maps for hydrological modelling and management practices.
Michael Stoelzle, Maria Staudinger, Kerstin Stahl, and Markus Weiler
Proc. IAHS, 383, 43–50, https://doi.org/10.5194/piahs-383-43-2020, https://doi.org/10.5194/piahs-383-43-2020, 2020
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The role of recharge and catchment storage is crucial to understand streamflow drought sensitivity. Here we introduce a model experiment with recharge stress tests as complement to climate scenarios to quantify the streamflow drought sensitivities of catchments in Switzerland. We identified a pre-drought period of 12 months as maximum storage-memory for the study catchments. From stress testing, we found up to 200 days longer summer streamflow droughts and minimum flow reductions of 50 %–80 %.
Cited articles
Baker, H. and James, W. O.: The Behaviour of Dyes in the Transpiration Stream of Sycamores (Acer Pseudoplatanus L.), New Phytol., 32, 245–260, https://doi.org/10.1111/j.1469-8137.1933.tb07010.x, 1933. a, b
Barbeta, A., Burlett, R., Martín-Gómez, P., Fréjaville, B., Devert, N., Wingate, L., Domec, J.-C., and Ogée, J.: Evidence for Distinct Isotopic Compositions of Sap and Tissue Water in Tree Stems: Consequences for Plant Water Source Identification, New Phytol., 233, 1121–1132, https://doi.org/10.1111/nph.17857, 2022. a
Berry, Z. C., Evaristo, J., Moore, G., Poca, M., Steppe, K., Verrot, L.,
Asbjornsen, H., Borma, L. S., Bretfeld, M., Hervé-Fernández, P.,
Seyfried, M., Schwendenmann, L., Sinacore, K., De Wispelaere, L., and
McDonnell, J.: The Two Water Worlds Hypothesis: Addressing Multiple
Working Hypotheses and Proposing a Way Forward, Ecohydrology, 11, e1843,
https://doi.org/10.1002/eco.1843, 2018. a
Beyer, M., Kühnhammer, K., and Dubbert, M.: In situ measurements of soil and plant water isotopes: a review of approaches, practical considerations and a vision for the future, Hydrol. Earth Syst. Sci., 24, 4413–4440, https://doi.org/10.5194/hess-24-4413-2020, 2020. a
Čermák, J., Kučera, J., and Nadezhdina, N.: Sap Flow Measurements with Some Thermodynamic Methods, Flow Integration within Trees and Scaling up from Sample Trees to Entire Forest Stands, Trees, 18, 529–546, https://doi.org/10.1007/s00468-004-0339-6, 2004. a
Čermák, J., Nadezhdina, N., Meiresonne, L., and Ceulemans, R.: Scots
Pine Root Distribution Derived from Radial Sap Flow Patterns in Stems of
Large Leaning Trees, Plant Soil, 305, 61–75,
https://doi.org/10.1007/s11104-007-9433-z, 2008. a, b, c, d
Dansgaard, W.: Stable Isotopes in Precipitation, Tellus A, 16, 436–468, https://doi.org/10.3402/tellusa.v16i4.8993, 1964. a
Dawson, T. E.: Fog in the California Redwood Forest: Ecosystem Inputs and
Use by Plants, Oecologia, 117, 476–485, https://doi.org/10.1007/s004420050683, 1998. a
Dawson, T. E. and Ehleringer, J. R.: Streamside Trees That Do Not Use Stream
Water, Nature, 350, 335–337, https://doi.org/10.1038/350335a0, 1991. a
De Deurwaerder, H. P. T., Visser, M. D., Detto, M., Boeckx, P., Meunier, F., Kuehnhammer, K., Magh, R.-K., Marshall, J. D., Wang, L., Zhao, L., and Verbeeck, H.: Causes and consequences of pronounced variation in the isotope composition of plant xylem water, Biogeosciences, 17, 4853–4870, https://doi.org/10.5194/bg-17-4853-2020, 2020. a, b
de Jong van Lier, Q., van Dam, J. C., Metselaar, K., de Jong, R., and Duijnisveld, W. H. M.: Macroscopic Root Water Uptake Distribution Using a
Matric Flux Potential Approach, Vadose Zone J., 7, 1065–1078,
https://doi.org/10.2136/vzj2007.0083, 2008. a
Dubbert, M., Cuntz, M., Piayda, A., and Werner, C.: Oxygen Isotope Signatures
of Transpired Water Vapor: The Role of Isotopic Non-Steady-State
Transpiration under Natural Conditions, New Phytol., 203, 1242–1252,
https://doi.org/10.1111/nph.12878, 2014. a
Dubbert, M., Couvreur, V., Kübert, A., and Werner, C.: Plant Water Uptake
Modelling: Added Value of Cross-disciplinary Approaches, Plant Biol., 25,
32–42, https://doi.org/10.1111/plb.13478, 2023. a
Ehleringer, J. R. and Dawson, T. E.: Water Uptake by Plants: Perspectives from Stable Isotope Composition, Plant Cell Environ., 15, 1073–1082,
https://doi.org/10.1111/j.1365-3040.1992.tb01657.x, 1992. a
Fabiani, G., Penna, D., Barbeta, A., and Klaus, J.: Sapwood and Heartwood Are
Not Isolated Compartments: Consequences for Isotope Ecohydrology,
Ecohydrology, 15, e2478, https://doi.org/10.1002/eco.2478, 2022. a
Feddes, R. A., Kowalik, P., Kolinska-Malinka, K., and Zaradny, H.: Simulation of Field Water Uptake by Plants Using a Soil Water Dependent Root Extraction Function, J. Hydrol., 31, 13–26, https://doi.org/10.1016/0022-1694(76)90017-2, 1976. a
Gaines, K. P., Meinzer, F. C., Duffy, C. J., Thomas, E. M., and Eissenstat,
D. M.: Rapid Tree Water Transport and Residence Times in a Pennsylvania
Catchment: Rapid Tree Water Transport and Residence Times,
Ecohydrology, 9, 1554–1565, https://doi.org/10.1002/eco.1747, 2016. a, b
Gebauer, T., Horna, V., and Leuschner, C.: Variability in Radial Sap Flux
Density Patterns and Sapwood Area among Seven Co-Occurring Temperate
Broad-Leaved Tree Species, Tree Physiol., 28, 1821–1830,
https://doi.org/10.1093/treephys/28.12.1821, 2008. a, b
Geißler, K., Heblack, J., Uugulu, S., Wanke, H., and Blaum, N.: Partitioning of Water Between Differently Sized Shrubs and Potential Groundwater Recharge in a Semiarid Savanna in Namibia, Front. Plant Sci., 10, 1411, https://doi.org/10.3389/fpls.2019.01411, 2019. a
Gessler, A., Bächli, L., Rouholahnejad Freund, E., Treydte, K., Schaub, M., Haeni, M., Weiler, M., Seeger, S., Marshall, J., Hug, C., Zweifel, R.,
Hagedorn, F., Rigling, A., Saurer, M., and Meusburger, K.: Drought Reduces
Water Uptake in Beech from the Drying Topsoil, but No Compensatory Uptake
Occurs from Deeper Soil Layers, New Phytol., 233, 194–206,
https://doi.org/10.1111/nph.17767, 2022. a
Granier, A.: Une Nouvelle Méthode Pour La Mesure Du Flux de Sève Brute Dans Le Tronc Des Arbres, Ann. Sci. Forest., 42, 193–200,
https://doi.org/10.1051/forest:19850204, 1985. a
Harvey, R. B.: Tracing the Transpiration Stream with Dyes, Am. J. Bot., 17, 657–661, https://doi.org/10.1002/j.1537-2197.1930.tb04911.x, 1930. a
Hayes, L.: Review Article The Current Use of TIROS-N Series of
Meteorological Satellites for Land-Cover Studies, Int. J. Remote Sens., 6, 35–45, https://doi.org/10.1080/01431168508948422, 1985. a
James, S., Meinzer, F., Goldstein, G., Woodruff, D., Jones, T., Restom, T.,
Mejia, M., Clearwater, M., and Campanello, P.: Axial and Radial Water
Transport and Internal Water Storage in Tropical Forest Canopy Trees,
Oecologia, 134, 37–45, https://doi.org/10.1007/s00442-002-1080-8, 2003. a
Jarvis, N.: A Simple Empirical Model of Root Water Uptake, J. Hydrol., 107, 57–72, https://doi.org/10.1016/0022-1694(89)90050-4, 1989. a
Jefferis, G.: Readbitmap: Simple Unified Interface to Read Bitmap Images (BMP, JPEG, PNG, TIFF), CRAN, https://CRAN.R-project.org/package=readbitmap (last access: 18 December 2022), 2018. a
Kahmen, A., Buser, T., Hoch, G., Grun, G., and Dietrich, L.: Dynamic 2H
Irrigation Pulse Labelling Reveals Rapid Infiltration and Mixing of
Precipitation in the Soil and Species-specific Water Uptake Depths of Trees
in a Temperate Forest, Ecohydrology, 14, e2322, https://doi.org/10.1002/eco.2322, 2021. a
Kalma, S. J., Thorburn, P. J., and Dunn, G. M.: A Comparison of Heat Pulse and Deuterium Tracing Techniques for Estimating Sap Flow in Eucalyptus
Grandis Trees, Tree Physiol,, 18, 697–705,
https://doi.org/10.1093/treephys/18.10.697, 1998. a, b
Knighton, J., Kuppel, S., Smith, A., Soulsby, C., Sprenger, M., and Tetzlaff, D.: Using Isotopes to Incorporate Tree Water Storage and Mixing Dynamics into a Distributed Ecohydrologic Modelling Framework, Ecohydrology, 13, e2201,
https://doi.org/10.1002/eco.2201, 2020. a, b
Koeniger, P., Marshall, J. D., Link, T., and Mulch, A.: An Inexpensive, Fast, and Reliable Method for Vacuum Extraction of Soil and Plant Water for Stable Isotope Analyses by Mass Spectrometry: Vacuum Extraction of Soil and Plant Water for Stable Isotope Analyses, Rapid Commun. Mass Sp., 25, 3041–3048, https://doi.org/10.1002/rcm.5198, 2011. a, b
Kozlowski, T. and Winget, C.: Patterns of Water Movement in Forest Trees, Bot. Gaz., 124, 301–311, https://www.jstor.org/stable/2472915 (last access: 10 December 2022), 1963. a
Kühnhammer, K., Dahlmann, A., Iraheta, A., Gerchow, M., Birkel, C.,
Marshall, J. D., and Beyer, M.: Continuous in Situ Measurements of Water
Stable Isotopes in Soils, Tree Trunk and Root Xylem: Field Approval,
Rapid Commun. Mass Sp., 36, e9232, https://doi.org/10.1002/rcm.9232, 2022. a
Kulmatiski, A. and Forero, L. E.: Bagging: A Cheaper, Faster, Non-Destructive Transpiration Water Sampling Method for Tracer Studies, Plant Soil, 462,
603–611, https://doi.org/10.1007/s11104-021-04844-w, 2021. a
Kuppel, S., Tetzlaff, D., Maneta, M. P., and Soulsby, C.: EcH2O-iso 1.0: water isotopes and age tracking in a process-based, distributed ecohydrological model, Geosci. Model Dev., 11, 3045–3069, https://doi.org/10.5194/gmd-11-3045-2018, 2018. a, b
Landgraf, J., Tetzlaff, D., Dubbert, M., Dubbert, D., Smith, A., and Soulsby, C.: Xylem water in riparian willow trees (Salix alba) reveals shallow sources of root water uptake by in situ monitoring of stable water isotopes, Hydrol. Earth Syst. Sci., 26, 2073–2092, https://doi.org/10.5194/hess-26-2073-2022, 2022. a, b
Lubczynski, M. W., Chavarro-Rincon, D. C., and Rossiter, D. G.: Conductive Sapwood Area Prediction from Stem and Canopy Areas-Allometric Equations of Kalahari Trees, Botswana, Ecohydrology, 10, e1856, https://doi.org/10.1002/eco.1856, 2017. a
Lüttschwager, D. and Remus, R.: Radial Distribution of Sap Flux Density in Trunks of a Mature Beech Stand, Ann. For. Sci., 64, 431–438,
https://doi.org/10.1051/forest:2007020, 2007. a, b
Magh, R.-K., Eiferle, C., Burzlaff, T., Dannenmann, M., Rennenberg, H., and Dubbert, M.: Competition for Water Rather than Facilitation in Mixed Beech-Fir Forests after Drying-Wetting Cycle, J. Hydrol., 587, 124944, https://doi.org/10.1016/j.jhydrol.2020.124944, 2020. a, b, c
Marshall, D. C.: Measurement of Sap Flow in Conifers by Heat Transport, Plant Physiol., 33, 385–396, https://doi.org/10.1104/pp.33.6.385, 1958. a
Marshall, J. D., Cuntz, M., Beyer, M., Dubbert, M., and Kuehnhammer, K.: Borehole Equilibration: Testing a New Method to Monitor the Isotopic Composition of Tree Xylem Water in Situ, Front. Plant Sci., 11, 358, https://doi.org/10.3389/fpls.2020.00358, 2020. a, b
McJannet, D., Fitch, P., Disher, M., and Wallace, J.: Measurements of Transpiration in Four Tropical Rainforest Types of North Queensland, Australia, Hydrol. Processe., 21, 3549–3564, https://doi.org/10.1002/hyp.6576, 2007. a
Meinzer, F. C., Brooks, J. R., Domec, J.-C., Gartner, B. L., Warren, J. M., Woodruff, D. R., Bible, K., and Shaw, D. C.: Dynamics of Water Transport and Storage in Conifers Studied with Deuterium and Heat Tracing Techniques, Plant Cell Environ., 29, 105–114, https://doi.org/10.1111/j.1365-3040.2005.01404.x, 2006. a, b, c
Mennekes, D., Rinderer, M., Seeger, S., and Orlowski, N.: Ecohydrological travel times derived from in situ stable water isotope measurements in trees during a semi-controlled pot experiment, Hydrol. Earth Syst. Sci., 25, 4513–4530, https://doi.org/10.5194/hess-25-4513-2021, 2021. a, b, c
Millar, C., Janzen, K., Nehemy, M. F., Koehler, G., Hervé-Fernández, P., Wang, H., Orlowski, N., Barbeta, A., and McDonnell, J. J.: On the Urgent
Need for Standardization in Isotope-based Ecohydrological Investigations,
Hydrol. Process., 36, e14698, https://doi.org/10.1002/hyp.14698, 2022. a, b
Müller, D.: Arbeitsteilung Im Bucbenholz, Physiol. Plantarum, 2,
297–299, https://doi.org/10.1111/j.1399-3054.1949.tb07654.x, 1949. a, b, c
Parnell, A. C., Phillips, D. L., Bearhop, S., Semmens, B. X., Ward, E. J., Moore, J. W., Jackson, A. L., Grey, J., Kelly, D. J., and Inger, R.: Bayesian
Stable Isotope Mixing Models, Environmetrics, 24, 387–399, https://doi.org/10.1002/env.2221, 2013. a
R Core Team: R: A Language and Environment for Statistical Computing, R Foundation for Statistical Computing, https://www.R-project.org/ (last access: 20 December 2022), 2022. a
Rothfuss, Y. and Javaux, M.: Reviews and syntheses: Isotopic approaches to quantify root water uptake: a review and comparison of methods, Biogeosciences, 14, 2199–2224, https://doi.org/10.5194/bg-14-2199-2017, 2017. a, b
Rozanski, K., Araguás-Araguás, L., and Gonfiantini, R.: Isotopic Patterns in Modern Global Precipitation, in: Geophysical Monograph
Series, edited by: Swart, P. K., Lohmann, K. C., Mckenzie, J., and Savin,
S., American Geophysical Union, Washington, D. C., 1–36,
https://doi.org/10.1029/GM078p0001, 1993. a
Schneider, C. A., Rasband, W. S., and Eliceiri, K. W.: NIH Image to ImageJ: 25 Years of Image Analysis, Nat. Methods, 9, 671–675, https://doi.org/10.1038/nmeth.2089, 2012. a
Schwendenmann, L., Dierick, D., Kohler, M., and Holscher, D.: Can Deuterium Tracing Be Used for Reliably Estimating Water Use of Tropical Trees and Bamboo?, Tree Physiol., 30, 886–900, https://doi.org/10.1093/treephys/tpq045, 2010. a, b
Seeger, S. and Weiler, M.: Temporal dynamics of tree xylem water isotopes: in situ monitoring and modeling, Biogeosciences, 18, 4603–4627, https://doi.org/10.5194/bg-18-4603-2021, 2021. a, b, c, d
Smith, A., Tetzlaff, D., Landgraf, J., Dubbert, M., and Soulsby, C.: Modelling temporal variability of in situ soil water and vegetation isotopes reveals ecohydrological couplings in a riparian willow plot, Biogeosciences, 19, 2465–2485, https://doi.org/10.5194/bg-19-2465-2022, 2022.
a
Snelgrove, J. R., Buttle, J. M., Kohn, M. J., and Tetzlaff, D.: Co-evolution of xylem water and soil water stable isotopic composition in a northern mixed forest biome, Hydrol. Earth Syst. Sci., 25, 2169–2186, https://doi.org/10.5194/hess-25-2169-2021, 2021. a
Sprenger, M., Stumpp, C., Weiler, M., Aeschbach, W., Allen, S. T., Benettin, P., Dubbert, M., Hartmann, A., Hrachowitz, M., Kirchner, J. W., McDonnell, J. J., Orlowski, N., Penna, D., Pfahl, S., Rinderer, M., Rodriguez, N., Schmidt, M., and Werner, C.: The Demographics of Water: A Review of Water Ages in the Critical Zone, Rev. Geophys., 57, 800–834, https://doi.org/10.1029/2018RG000633, 2019. a
Steppe, K. and Lemeur, R.: Effects of Ring-Porous and Diffuse-Porous Stem Wood Anatomy on the Hydraulic Parameters Used in a Water Flow and Storage Model, Tree Physiol., 27, 43–52, https://doi.org/10.1093/treephys/27.1.43, 2007. a
Thorburn, P. J. and Ehleringer, J. R.: Root Water Uptake of Field-Growing Plants Indicated by Measurements of Natural-Abundance Deuterium, Plant Soil, 177, 225–233, https://doi.org/10.1007/BF00010129, 1995. a
Thorburn, P. J., Walker, G. R., and Brunel, J.-P.: Extraction of Water from Eucalyptus Trees for Analysis of Deuterium and Oxygen-18: Laboratory and
Field Techniques, Plant Cell Environ., 16, 269–277,
https://doi.org/10.1111/j.1365-3040.1993.tb00869.x, 1993. a
Tucker, C. J.: Red and Photographic Infrared Linear Combinations for Monitoring Vegetation, Remote Sens. Environ., 8, 127–150,
https://doi.org/10.1016/0034-4257(79)90013-0, 1979. a
Umebayashi, T., Utsumi, Y., Koga, S., Inoue, S., Shiiba, Y., Arakawa, K., Matsumura, J., and Oda, K.: Optimal Conditions for Visualizing Water-Conducting Pathways in a Living Tree by the Dye Injection Method, Tree Physiol., 27, 993–999, https://doi.org/10.1093/treephys/27.7.993, 2007. a
Volkmann, T. H. M., Haberer, K., Gessler, A., and Weiler, M.: High-resolution Isotope Measurements Resolve Rapid Ecohydrological Dynamics at the Soil–Plant Interface, New Phytol., 210, 839–849, https://doi.org/10.1111/nph.13868, 2016a. a
Volkmann, T. H. M., Kühnhammer, K., Herbstritt, B., Gessler, A., and Weiler, M.: A Method for in Situ Monitoring of the Isotope Composition of Tree Xylem Water Using Laser Spectroscopy: In Situ Monitoring of Xylem Water Isotopes, Plant Cell Environ., 39, 2055–2063, https://doi.org/10.1111/pce.12725, 2016b. a, b
Waisel, Y., Liphschitz, N., and Kuller, Z.: Patterns of Water Movement in Trees and Shrubs, Ecology, 53, 520–523, https://doi.org/10.2307/1934244, 1972. a
Zuecco, G., Amin, A., Frentress, J., Engel, M., Marchina, C., Anfodillo, T., Borga, M., Carraro, V., Scandellari, F., Tagliavini, M., Zanotelli, D., Comiti, F., and Penna, D.: A comparative study of plant water extraction methods for isotopic analyses: Scholander-type pressure chamber vs. cryogenic vacuum distillation, Hydrol. Earth Syst. Sci., 26, 3673–3689, https://doi.org/10.5194/hess-26-3673-2022, 2022. a, b, c
Short summary
This study proposes a low-budget method to quantify the radial distribution of water transport velocities within trees at a high spatial resolution. We observed a wide spread of water transport velocities within a tree stem section, which were on average 3 times faster than the flux velocity. The distribution of transport velocities has implications for studies that use water isotopic signatures to study root water uptake and usually assume uniform or even implicitly infinite velocities.
This study proposes a low-budget method to quantify the radial distribution of water transport...