- About
- Editorial board
- Articles
- Special issues
- Highlight articles
- Manuscript tracking
- Subscribe to alerts
- Peer review
- For authors
- For reviewers
- EGU publications
Journal cover
Journal topic
Biogeosciences
An interactive open-access journal of the European Geosciences Union
Journal topic
- About
- Editorial board
- Articles
- Special issues
- Highlight articles
- Manuscript tracking
- Subscribe to alerts
- Peer review
- For authors
- For reviewers
- EGU publications
Journal metrics
IF3.480
IF 5-year
4.194
4.194
CiteScore
6.7
6.7
SNIP1.143
IPP3.65
SJR1.761
Scimago H
index118
index118
h5-index60
Abstracted/indexed
Abstracted/indexed- Science Citation Index Expanded
- Current Contents/ABE
- Current Contents/PCE
- Scopus
- ADS
- AGRICOLA
- Aquatic Sciences and Fisheries Abstracts
- CAB Abstracts
- Cabell's
- Chemical Abstracts
- CLOCKSS
- CNKI
- DOAJ
- EBSCO
- GBA
- Gale/Cengage
- GeoBase
- GeoRef
- GoOA (CAS)
- Google Scholar
- J-Gate
- Portico
- ProQuest
- World Public Library
BG | Articles | Volume 16, issue 22
Biogeosciences, 16, 4497–4516, 2019
https://doi.org/10.5194/bg-16-4497-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-16-4497-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
Biogeosciences, 16, 4497–4516, 2019
https://doi.org/10.5194/bg-16-4497-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-16-4497-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
Research article 28 Nov 2019
Research article | 28 Nov 2019
High-frequency measurements explain quantity and quality of dissolved organic carbon mobilization in a headwater catchment
Benedikt J. Werner et al.
Related authors
No articles found.
Gerrit H. de Rooij, Juliane Mai, and Raneem Madi
Hydrol. Earth Syst. Sci. Discuss., https://doi.org/10.5194/hess-2020-380, https://doi.org/10.5194/hess-2020-380, 2020
Preprint under review for HESS
Short summary
Short summary
The way soils capture infiltrating water affects crops and natural vegetation as well as groundwater recharge. This retention of soil water is captured by a mathematical function that covers all water contents from very dry to water-saturated. We combined two existing lines of research to improve the behaviour of a popular function for very dry and very wet conditions. Our new function could handle a wider range of conditions than earlier curves. We provide fits to a wide range of soils.
Ingo Heidbüchel, Jie Yang, Andreas Musolff, Peter Troch, Ty Ferré, and Jan H. Fleckenstein
Hydrol. Earth Syst. Sci., 24, 2895–2920, https://doi.org/10.5194/hess-24-2895-2020, https://doi.org/10.5194/hess-24-2895-2020, 2020
Short summary
Short summary
With the help of a 3-D computer model we examined how long the water of different rain events stays inside small catchments before it is discharged and how the nature of this discharge is controlled by different catchment and climate properties. We found that one can only predict the discharge dynamics when taking into account a combination of catchment and climate properties (i.e., there was not one single most important predictor). Our results can help to manage water pollution events.
Conrad Jackisch, Kai Germer, Thomas Graeff, Ines Andrä, Katrin Schulz, Marcus Schiedung, Jaqueline Haller-Jans, Jonas Schneider, Julia Jaquemotte, Philipp Helmer, Leander Lotz, Andreas Bauer, Irene Hahn, Martin Šanda, Monika Kumpan, Johann Dorner, Gerrit de Rooij, Stefan Wessel-Bothe, Lorenz Kottmann, Siegfried Schittenhelm, and Wolfgang Durner
Earth Syst. Sci. Data, 12, 683–697, https://doi.org/10.5194/essd-12-683-2020, https://doi.org/10.5194/essd-12-683-2020, 2020
Short summary
Short summary
Soil water content and matric potential are central hydrological state variables. A large variety of automated probes and sensor systems for field monitoring exist. In a field experiment under idealised conditions we compared 15 systems for soil moisture and 14 systems for matric potential. The individual records of one system agree well with the others. Most records are also plausible. However, the absolute values of the different measuring systems span a very large range of possible truths.
Adam S. Ward, Steven M. Wondzell, Noah M. Schmadel, Skuyler Herzog, Jay P. Zarnetske, Viktor Baranov, Phillip J. Blaen, Nicolai Brekenfeld, Rosalie Chu, Romain Derelle, Jennifer Drummond, Jan H. Fleckenstein, Vanessa Garayburu-Caruso, Emily Graham, David Hannah, Ciaran J. Harman, Jase Hixson, Julia L. A. Knapp, Stefan Krause, Marie J. Kurz, Jörg Lewandowski, Angang Li, Eugènia Martí, Melinda Miller, Alexander M. Milner, Kerry Neil, Luisa Orsini, Aaron I. Packman, Stephen Plont, Lupita Renteria, Kevin Roche, Todd Royer, Catalina Segura, James Stegen, Jason Toyoda, Jacqueline Wells, and Nathan I. Wisnoski
Hydrol. Earth Syst. Sci., 23, 5199–5225, https://doi.org/10.5194/hess-23-5199-2019, https://doi.org/10.5194/hess-23-5199-2019, 2019
Short summary
Short summary
The movement of water and solutes between streams and their shallow, connected subsurface is important to many ecosystem functions. These exchanges are widely expected to vary with stream flow across space and time, but these assumptions are seldom tested across basin scales. We completed more than 60 experiments across a 5th-order river basin to document these changes, finding patterns in space but not time. We conclude space-for-time and time-for-space substitutions are not good assumptions.
Adam S. Ward, Jay P. Zarnetske, Viktor Baranov, Phillip J. Blaen, Nicolai Brekenfeld, Rosalie Chu, Romain Derelle, Jennifer Drummond, Jan H. Fleckenstein, Vanessa Garayburu-Caruso, Emily Graham, David Hannah, Ciaran J. Harman, Skuyler Herzog, Jase Hixson, Julia L. A. Knapp, Stefan Krause, Marie J. Kurz, Jörg Lewandowski, Angang Li, Eugènia Martí, Melinda Miller, Alexander M. Milner, Kerry Neil, Luisa Orsini, Aaron I. Packman, Stephen Plont, Lupita Renteria, Kevin Roche, Todd Royer, Noah M. Schmadel, Catalina Segura, James Stegen, Jason Toyoda, Jacqueline Wells, Nathan I. Wisnoski, and Steven M. Wondzell
Earth Syst. Sci. Data, 11, 1567–1581, https://doi.org/10.5194/essd-11-1567-2019, https://doi.org/10.5194/essd-11-1567-2019, 2019
Short summary
Short summary
Studies of river corridor exchange commonly focus on characterization of the physical, chemical, or biological system. As a result, complimentary systems and context are often lacking, which may limit interpretation. Here, we present a characterization of all three systems at 62 sites in a 5th-order river basin, including samples of surface water, hyporheic water, and sediment. These data will allow assessment of interacting processes in the river corridor.
Sophie Ehrhardt, Rohini Kumar, Jan H. Fleckenstein, Sabine Attinger, and Andreas Musolff
Hydrol. Earth Syst. Sci., 23, 3503–3524, https://doi.org/10.5194/hess-23-3503-2019, https://doi.org/10.5194/hess-23-3503-2019, 2019
Short summary
Short summary
This study shows quantitative and temporal offsets between nitrogen input and riverine output, using time series of three nested catchments in central Germany. The riverine concentrations show lagged reactions to the input, but at the same time exhibit strong inter-annual changes in the relationship between riverine discharge and concentration. The study found a strong retention of nitrogen that is dominantly assigned to a hydrological N legacy, which will affect future stream concentrations.
Gerrit Huibert de Rooij
Geosci. Model Dev. Discuss., https://doi.org/10.5194/gmd-2018-97, https://doi.org/10.5194/gmd-2018-97, 2018
Publication in GMD not foreseen
Short summary
Short summary
Areas that have few or no weather stations or are subject to climate change still need weather data in order to model the demand for water, the risk of floods and droughts, etc. TEmpotRain generates rainfall, daily temperature extremes, and daily potential evaporation (from the soil) / transpiration (by plants). The physical meaning of the model parameters is clear. This allows realistic values for them to be estimated, even for hypothetical (future) climates for which data are not available.
Raneem Madi, Gerrit Huibert de Rooij, Henrike Mielenz, and Juliane Mai
Hydrol. Earth Syst. Sci., 22, 1193–1219, https://doi.org/10.5194/hess-22-1193-2018, https://doi.org/10.5194/hess-22-1193-2018, 2018
Short summary
Short summary
Water flows through soils with more difficulty when the soil is dried out. Scant rainfall in deserts may therefore result in a seemingly wet soil, but the water will often not penetrate deeply enough to replenish the groundwater. We compared the mathematical functions that describe how well different soils hold their water and found that only a few of them are realistic. The function one chooses to model the soil can have a large impact on the estimate of groundwater recharge.
Rémi Dupas, Andreas Musolff, James W. Jawitz, P. Suresh C. Rao, Christoph G. Jäger, Jan H. Fleckenstein, Michael Rode, and Dietrich Borchardt
Biogeosciences, 14, 4391–4407, https://doi.org/10.5194/bg-14-4391-2017, https://doi.org/10.5194/bg-14-4391-2017, 2017
Short summary
Short summary
Carbon and nutrient export regimes were analyzed from archetypal headwater catchments to
downstream reaches. In headwater catchments, land use and lithology determine
land-to-stream C, N and P transfer processes. The crucial role of riparian
zones in C, N and P coupling was investigated. In downstream reaches,
point-source contributions and in-stream processes alter C, N and P export
regimes.
W. He, C. Beyer, J. H. Fleckenstein, E. Jang, O. Kolditz, D. Naumov, and T. Kalbacher
Geosci. Model Dev., 8, 3333–3348, https://doi.org/10.5194/gmd-8-3333-2015, https://doi.org/10.5194/gmd-8-3333-2015, 2015
Short summary
Short summary
This technical paper presents a new tool to simulate reactive transport processes in subsurface systems and which couples the open-source software packages OpenGeoSys and IPhreeqc. A flexible parallelization scheme was developed and implemented to enable an optimized allocation of computer resources. The performance tests of the coupling interface and parallelization scheme illustrate the promising efficiency of this generally valid approach to simulate reactive transport problems.
L. Jørgensen, O. J. Lechtenfeld, R. Benner, M. Middelboe, and C. A. Stedmon
Biogeosciences, 11, 5349–5363, https://doi.org/10.5194/bg-11-5349-2014, https://doi.org/10.5194/bg-11-5349-2014, 2014
E. Bloem, M. de Gee, and G. H. de Rooij
Hydrol. Earth Syst. Sci. Discuss., https://doi.org/10.5194/hessd-11-6993-2014, https://doi.org/10.5194/hessd-11-6993-2014, 2014
Manuscript not accepted for further review
G. H. de Rooij
Hydrol. Earth Syst. Sci. Discuss., https://doi.org/10.5194/hessd-11-83-2014, https://doi.org/10.5194/hessd-11-83-2014, 2014
Revised manuscript has not been submitted
B. J. Kopp, J. H. Fleckenstein, N. T. Roulet, E. Humphreys, J. Talbot, and C. Blodau
Hydrol. Earth Syst. Sci., 17, 3485–3498, https://doi.org/10.5194/hess-17-3485-2013, https://doi.org/10.5194/hess-17-3485-2013, 2013
B. te Brake, M. J. van der Ploeg, and G. H. de Rooij
Hydrol. Earth Syst. Sci., 17, 1933–1949, https://doi.org/10.5194/hess-17-1933-2013, https://doi.org/10.5194/hess-17-1933-2013, 2013
S. Strohmeier, K.-H. Knorr, M. Reichert, S. Frei, J. H. Fleckenstein, S. Peiffer, and E. Matzner
Biogeosciences, 10, 905–916, https://doi.org/10.5194/bg-10-905-2013, https://doi.org/10.5194/bg-10-905-2013, 2013
Related subject area
Biogeochemistry: Rivers & Streams
Temporary and net sinks of atmospheric CO2 due to chemical weathering in subtropical catchment with mixing carbonate and silicate lithology
From canals to the coast: dissolved organic matter and trace metal composition in rivers draining degraded tropical peatlands in Indonesia
Distribution and flux of dissolved iron in the peatland-draining rivers and estuaries of Sarawak, Malaysian Borneo
Comparisons of dissolved organic matter and its optical characteristics in small low and high Arctic catchments
Dissolved inorganic nitrogen in a tropical estuary in Malaysia: transport and transformation
Behaviour of Dissolved Phosphorus with the associated nutrients in relation to phytoplankton biomass of the Rajang River-South China Sea continuum
Synchrony in catchment stream colour levels is driven by both local and regional climate
The post-monsoon carbon biogeochemistry of the Hooghly–Sundarbans estuarine system under different levels of anthropogenic impacts
Riverine particulate C and N generated at the permafrost thaw front: case study of western Siberian rivers across a 1700 km latitudinal transect
Geochemistry of the dissolved loads during high-flow season of rivers in the southeastern coastal region of China: anthropogenic impact on chemical weathering and carbon sequestration
CO2 partial pressure and CO2 emission along the lower Red River (Vietnam)
Stable isotopes of nitrate reveal different nitrogen processing mechanisms in streams across a land use gradient during wet and dry periods
Riverine carbon export in the arid to semiarid Wuding River catchment on the Chinese Loess Plateau
Use of argon to measure gas exchange in turbulent mountain streams
Reviews and syntheses: Anthropogenic perturbations to carbon fluxes in Asian river systems – concepts, emerging trends, and research challenges
Shifts in stream hydrochemistry in responses to typhoon and non-typhoon precipitation
QUAL-NET, a high temporal-resolution eutrophication model for large hydrographic networks
Diel fluctuations of viscosity-driven riparian inflow affect streamflow DOC concentration
A comprehensive biogeochemical record and annual flux estimates for the Sabaki River (Kenya)
Hydro-ecological controls on dissolved carbon dynamics in groundwater and export to streams in a temperate pine forest
Regional-scale lateral carbon transport and CO2 evasion in temperate stream catchments
Carbon and nutrient export regimes from headwater catchments to downstream reaches
Influence of infrastructure on water quality and greenhouse gas dynamics in urban streams
Hydromorphological restoration stimulates river ecosystem metabolism
Quantifying nutrient fluxes with a new hyporheic passive flux meter (HPFM)
Sources, cycling and export of nitrogen on the Greenland Ice Sheet
Variability in runoff fluxes of dissolved and particulate carbon and nitrogen from two watersheds of different tree species during intense storm events
Shift in the chemical composition of dissolved organic matter in the Congo River network
Technical note: Assessing gas equilibration systems for continuous pCO2 measurements in inland waters
Source and flux of POC in a karstic area in the Changjiang River watershed: impacts of reservoirs and extreme drought
Sediment trap efficiency of paddy fields at the watershed scale in a mountainous catchment in northwest Vietnam
Along-stream transport and transformation of dissolved organic matter in a large tropical river
Global riverine N and P transport to ocean increased during the 20th century despite increased retention along the aquatic continuum
Optical properties and bioavailability of dissolved organic matter along a flow-path continuum from soil pore waters to the Kolyma River mainstem, East Siberia
Trace element transport in western Siberian rivers across a permafrost gradient
Effects of different N sources on riverine DIN export and retention in a subtropical high-standing island, Taiwan
Stream biogeochemical and suspended sediment responses to permafrost degradation in stream banks in Taylor Valley, Antarctica
Runoff- and erosion-driven transport of cattle slurry: linking molecular tracers to hydrological processes
Dissolved organic carbon lability and stable isotope shifts during microbial decomposition in a tropical river system
Map-based prediction of organic carbon in headwater streams improved by downstream observations from the river outlet
Model-aided quantification of dissolved carbon and nitrogen release after windthrow disturbance in an Austrian karst system
Nitrogen export from a boreal stream network following forest harvesting: seasonal nitrate removal and conservative export of organic forms
Salinization alters fluxes of bioreactive elements from stream ecosystems across land use
Reviews and syntheses: Effects of permafrost thaw on Arctic aquatic ecosystems
Biodegradability of dissolved organic carbon in permafrost soils and aquatic systems: a meta-analysis
Controls on dissolved organic matter (DOM) degradation in a headwater stream: the influence of photochemical and hydrological conditions in determining light-limitation or substrate-limitation of photo-degradation
Permafrost coverage, watershed area and season control of dissolved carbon and major elements in western Siberian rivers
Lateral carbon fluxes and CO2 outgassing from a tropical peat-draining river
Seasonal hydrology drives rapid shifts in the flux and composition of dissolved and particulate organic carbon and major and trace ions in the Fraser River, Canada
Comment on "Solute-specific scaling of inorganic nitrogen and phosphorus uptake in streams" by Hall et al. (2013)
Yingjie Cao, Yingxue Xuan, Changyuan Tang, Shuai Guan, and Yisheng Peng
Biogeosciences, 17, 3875–3890, https://doi.org/10.5194/bg-17-3875-2020, https://doi.org/10.5194/bg-17-3875-2020, 2020
Short summary
Short summary
About half of the global CO2 sequestration due to chemical weathering occurs in warm and high-runoff regions. To evaluate the temporary and net sinks of atmospheric CO2 due to chemical weathering, we selected a typical subtropical catchment as our study area and did fieldwork to sample surface water along the main channel and major tributaries in 1 hydrological year. The result of mass balance calculation showed that human activities dramatically decreased the CO2 net sink.
Laure Gandois, Alison M. Hoyt, Stéphane Mounier, Gaël Le Roux, Charles F. Harvey, Adrien Claustres, Mohammed Nuriman, and Gusti Anshari
Biogeosciences, 17, 1897–1909, https://doi.org/10.5194/bg-17-1897-2020, https://doi.org/10.5194/bg-17-1897-2020, 2020
Short summary
Short summary
Worldwide, peatlands are important sources of dissolved organic matter (DOM) and trace metals (TMs) to surface waters, and these fluxes may increase with peatland degradation. In Southeast Asia, tropical peatlands are being rapidly deforested and drained. This work aims to address the fate of organic carbon and its role as a trace metal carrier in drained peatlands of Indonesia.
Xiaohui Zhang, Moritz Müller, Shan Jiang, Ying Wu, Xunchi Zhu, Aazani Mujahid, Zhuoyi Zhu, Mohd Fakharuddin Muhamad, Edwin Sien Aun Sia, Faddrine Holt Ajon Jang, and Jing Zhang
Biogeosciences, 17, 1805–1819, https://doi.org/10.5194/bg-17-1805-2020, https://doi.org/10.5194/bg-17-1805-2020, 2020
Short summary
Short summary
This study offered detailed information on dFe concentrations, distribution and the magnitude of yield in the Rajang River, the largest river in Malaysia. Three blackwater rivers, draining from peatlands, were also included in our study. Compared with the Rajang River, the dFe concentrations and yield from three blackwater rivers were much higher. The precipitation and agricultural activities, such as palm oil plantations, may markedly increase the concentration dFe in these tropical rivers.
Caroline Coch, Bennet Juhls, Scott F. Lamoureux, Melissa J. Lafrenière, Michael Fritz, Birgit Heim, and Hugues Lantuit
Biogeosciences, 16, 4535–4553, https://doi.org/10.5194/bg-16-4535-2019, https://doi.org/10.5194/bg-16-4535-2019, 2019
Short summary
Short summary
Climate change affects Arctic ecosystems. This includes thawing of permafrost (ground below 0 °C) and an increase in rainfall. Both have substantial impacts on the chemical composition of river water. We compared the composition of small rivers in the low and high Arctic with the large Arctic rivers. In comparison, dissolved organic matter in the small rivers is more susceptible to degradation; thus, it could potentially increase carbon dioxide emissions. Rainfall events have a similar effect.
Shan Jiang, Moritz Müller, Jie Jin, Ying Wu, Kun Zhu, Guosen Zhang, Aazani Mujahid, Tim Rixen, Mohd Fakharuddin Muhamad, Edwin Sien Aun Sia, Faddrine Holt Ajon Jang, and Jing Zhang
Biogeosciences, 16, 2821–2836, https://doi.org/10.5194/bg-16-2821-2019, https://doi.org/10.5194/bg-16-2821-2019, 2019
Short summary
Short summary
Three cruises were conducted in the Rajang River estuary, Malaysia. The results revealed that the decomposition of terrestrial organic matter and the subsequent soil leaching were the main sources of dissolved inorganic nitrogen (DIN) in the fresh river water. Porewater exchange and ammonification enhanced DIN concentrations in the estuary water, while intensities of DIN addition varied between seasons. The riverine DIN flux could reach 101.5 ton(N) / d, supporting the coastal primary producers.
Edwin Sien Aun Sia, Jing Zhang, Shan Jiang, Zhuoyi Zhu, Gonzalo Carrasco, Faddrine Holt Jang, Aazani Mujahid, and Moritz Müller
Biogeosciences Discuss., https://doi.org/10.5194/bg-2019-219, https://doi.org/10.5194/bg-2019-219, 2019
Revised manuscript under review for BG
Short summary
Short summary
Nutrient loads carried by large rivers and discharged into the continental shelf and coastal waters are vital to support primary production. Our knowledge of tropical river systems is fragmented with very few seasonal studies available for Southeast Asia (SEA). We present data from three sampling campaigns on the longest river in Malaysia, the Rajang river. Our results show the generalization of SEA as a nutrient hotspot might not hold true for all regions and requires further investigation.
Brian C. Doyle, Elvira de Eyto, Mary Dillane, Russell Poole, Valerie McCarthy, Elizabeth Ryder, and Eleanor Jennings
Biogeosciences, 16, 1053–1071, https://doi.org/10.5194/bg-16-1053-2019, https://doi.org/10.5194/bg-16-1053-2019, 2019
Short summary
Short summary
This study explores the drivers of variation in the water colour of rivers, and hence organic carbon export, in a blanket peatland catchment. We used 6 years of weekly river water colour data (2011 to 2016) from three proximate river sub-catchments in western Ireland. in tandem with a range of topographical, hydrological and climate data, to discover the principle environmental drivers controlling changes in colour concentration in the rivers.
Manab Kumar Dutta, Sanjeev Kumar, Rupa Mukherjee, Prasun Sanyal, and Sandip Kumar Mukhopadhyay
Biogeosciences, 16, 289–307, https://doi.org/10.5194/bg-16-289-2019, https://doi.org/10.5194/bg-16-289-2019, 2019
Short summary
Short summary
The study focused on understanding C biogeochemistry of two adjacently located estuaries undergoing different levels of anthropogenic stresses. Different parameters related to C cycling were measured in an anthropogenically influenced and a mangrove-dominated estuary. Although the entire estuarine system acted as a source of carbon dioxide to the regional atmosphere, emission approximately 17 times higher was noticed from the anthropogenically affected estuary compared to mangrove-dominated one.
Ivan V. Krickov, Artem G. Lim, Rinat M. Manasypov, Sergey V. Loiko, Liudmila S. Shirokova, Sergey N. Kirpotin, Jan Karlsson, and Oleg S. Pokrovsky
Biogeosciences, 15, 6867–6884, https://doi.org/10.5194/bg-15-6867-2018, https://doi.org/10.5194/bg-15-6867-2018, 2018
Short summary
Short summary
We tested the effect of climate, permafrost and physio-geographical landscape parameters on particulate C, N and P concentrations in small- and medium- sized rivers in the Western Siberian Lowland (WSL). We discovered a maximum of particulate C and N concentrations at the beginning of the permafrost appearance. A northward shift of permafrost boundaries may increase the particulate C and N export by WSL rivers to the Arctic Ocean by a factor of 2.
Wenjing Liu, Zhifang Xu, Huiguo Sun, Tong Zhao, Chao Shi, and Taoze Liu
Biogeosciences, 15, 4955–4971, https://doi.org/10.5194/bg-15-4955-2018, https://doi.org/10.5194/bg-15-4955-2018, 2018
Short summary
Short summary
The southeastern coastal region is the top acid-rain-impacted area in China. It is worth evaluating the acid deposition impacts on chemical weathering and CO2 consumption there. River water geochemistry evidenced an overestimation of CO2 sequestration if H2SO4/HNO3 involvement was ignored, which accounted for 33.6 % of the total flux by silicate weathering in this area. This study quantitatively highlights the anthropogenic acid effects on chemical weathering and associated CO2 consumption.
Thi Phuong Quynh Le, Cyril Marchand, Cuong Tu Ho, Nhu Da Le, Thi Thuy Duong, XiXi Lu, Phuong Kieu Doan, Trung Kien Nguyen, Thi Mai Huong Nguyen, and Duy An Vu
Biogeosciences, 15, 4799–4814, https://doi.org/10.5194/bg-15-4799-2018, https://doi.org/10.5194/bg-15-4799-2018, 2018
Short summary
Short summary
The Red River is a typical south-east Asian river, strongly affected by climate and human activity. This study showed the spatial and seasonal variability of CO2 emissions at the water–air interface of the lower part of this river due to natural conditions (meteo-hydrological-geomorphological characteristics) and human activities (dam impoundment, population, land use). The Red River water was supersaturated with CO2, providing a mean water–air CO2 flux of 530 ± 17 mmol m−2 d−1.
Wei Wen Wong, Jesse Pottage, Fiona Y. Warry, Paul Reich, Keryn L. Roberts, Michael R. Grace, and Perran L. M. Cook
Biogeosciences, 15, 3953–3965, https://doi.org/10.5194/bg-15-3953-2018, https://doi.org/10.5194/bg-15-3953-2018, 2018
Short summary
Short summary
Over-enrichment of nitrate can pose substantial risk to the quality of freshwater ecosystems. Hence, understanding the dynamics of nitrate is the key to better management of waterways. This study evaluates the relationship between the effects of land use and rainfall on the major sources and processing of nitrate within and between five streams in five catchments spanning an agricultural land use gradient. We found that rainfall exerted significant control over the fate of nitrate.
Lishan Ran, Mingyang Tian, Nufang Fang, Suiji Wang, Xixi Lu, Xiankun Yang, and Frankie Cho
Biogeosciences, 15, 3857–3871, https://doi.org/10.5194/bg-15-3857-2018, https://doi.org/10.5194/bg-15-3857-2018, 2018
Short summary
Short summary
We systematically assessed the transport and fate of riverine carbon in the moderate-sized Wuding catchment on the Chinese Loess Plateau by constructing a riverine carbon budget and further relating it to terrestrial ecosystem productivity. The riverine carbon export accounted for 16 % of the catchment's net ecosystem production (NEP). It seems that a significant fraction of terrestrial NEP in this catchment is laterally transported from the terrestrial biosphere to the drainage network.
Robert O. Hall Jr. and Hilary L. Madinger
Biogeosciences, 15, 3085–3092, https://doi.org/10.5194/bg-15-3085-2018, https://doi.org/10.5194/bg-15-3085-2018, 2018
Short summary
Short summary
Streams exchange oxygen with the atmosphere, but this rate is difficult to measure. We added argon to small mountain streams to estimate gas exchange. We compared these rates with sulfur hexafluoride, an intense greenhouse gas. Argon worked well to measure gas exchange, but had higher-than-predicted rates than sulfur hexafluoride. Argon exchange is more likely to represent that for oxygen because they share similar physical properties. We suggest argon to measure gas exchange in small streams.
Ji-Hyung Park, Omme K. Nayna, Most S. Begum, Eliyan Chea, Jens Hartmann, Richard G. Keil, Sanjeev Kumar, Xixi Lu, Lishan Ran, Jeffrey E. Richey, Vedula V. S. S. Sarma, Shafi M. Tareq, Do Thi Xuan, and Ruihong Yu
Biogeosciences, 15, 3049–3069, https://doi.org/10.5194/bg-15-3049-2018, https://doi.org/10.5194/bg-15-3049-2018, 2018
Short summary
Short summary
Human activities are drastically altering water and material flows in river systems across Asia. This review provides a conceptual framework for assessing the human impacts on Asian river C fluxes and an update on anthropogenic alterations of riverine C fluxes, focusing on the impacts of water pollution and river impoundments on CO2 outgassing from the rivers draining South, Southeast, and East Asian regions that account for the largest fraction of river discharge and C exports from Asia.
Chung-Te Chang, Jr-Chuan Huang, Lixin Wang, Yu-Ting Shih, and Teng-Chiu Lin
Biogeosciences, 15, 2379–2391, https://doi.org/10.5194/bg-15-2379-2018, https://doi.org/10.5194/bg-15-2379-2018, 2018
Short summary
Short summary
Our analysis of ion input–output budget illustrates that hydrochemical responses to typhoon storms are distinctly different from those of regular storms. In addition, even mild land use change may have large impacts on nutrient exports/losses. We propose that hydrological models should separate hydrochemical processes into regular and extreme conditions to better capture the whole spectrum of hydrochemical responses to a variety of climate conditions.
Camille Minaudo, Florence Curie, Yann Jullian, Nathalie Gassama, and Florentina Moatar
Biogeosciences, 15, 2251–2269, https://doi.org/10.5194/bg-15-2251-2018, https://doi.org/10.5194/bg-15-2251-2018, 2018
Short summary
Short summary
We developed the model QUALity-NETwork (QUAL-NET) to simulate water quality variations in large drainage networks. This model is accurate enough to represent processes occurring over short periods of time such as storm events and helps to fully understand water quality variations in stream networks in the context of climate change and varying human pressures. It was tested on the Loire River and provided good performances and a new understanding of the functioning of the river.
Michael P. Schwab, Julian Klaus, Laurent Pfister, and Markus Weiler
Biogeosciences, 15, 2177–2188, https://doi.org/10.5194/bg-15-2177-2018, https://doi.org/10.5194/bg-15-2177-2018, 2018
Short summary
Short summary
We studied the diel fluctuations of dissolved organic carbon (DOC) concentrations in a small stream in Luxembourg. We identified an increased proportion of DOC from terrestrial sources as responsible for the peaks in DOC in the afternoon. Warmer water temperatures in the riparian zone in the afternoon increased the amount of water flowing towards the stream. Consequently, an increased amount of DOC-rich water from the riparian zone was entering the stream.
Trent R. Marwick, Fredrick Tamooh, Bernard Ogwoka, Alberto V. Borges, François Darchambeau, and Steven Bouillon
Biogeosciences, 15, 1683–1700, https://doi.org/10.5194/bg-15-1683-2018, https://doi.org/10.5194/bg-15-1683-2018, 2018
Short summary
Short summary
A 2-year biogeochemical record provides annual sediment and element flux estimates for the non-dammed Sabaki River, Kenya, establishing a baseline for future research in light of impending construction of the first major upstream reservoir. Over 80 % of material fluxes occur across the wet season, with annual yields comparable to the adjacent, and dammed, Tana River. Observations at low-flow periods suggest large mammalian herbivores may be vectors of terrestrial subsidies to the water column.
Loris Deirmendjian, Denis Loustau, Laurent Augusto, Sébastien Lafont, Christophe Chipeaux, Dominique Poirier, and Gwenaël Abril
Biogeosciences, 15, 669–691, https://doi.org/10.5194/bg-15-669-2018, https://doi.org/10.5194/bg-15-669-2018, 2018
Short summary
Short summary
Carbon leaching to streams represents a very small (~ 2 %) fraction of forest net ecosystem exchange (NEE). Such weak export of carbon from forest ecosystems, at least in temperate regions, is at odds with recent studies that attempt to integrate the contribution of inland waters in the continent carbon budget. Understanding why local and global carbon mass balances strongly diverge on the proportion of land NEE exported to aquatic systems is a major challenge for research in this field.
Katrin Magin, Celia Somlai-Haase, Ralf B. Schäfer, and Andreas Lorke
Biogeosciences, 14, 5003–5014, https://doi.org/10.5194/bg-14-5003-2017, https://doi.org/10.5194/bg-14-5003-2017, 2017
Short summary
Short summary
We analyzed the relationship between terrestrial net primary production (NPP) and the rate at which carbon is exported from catchments in a temperate stream network. The carbon exported by streams and rivers corresponds to 2.7 % of the terrestrial NPP. CO2 evasion and downstream transport contribute about equally to this flux. A review of existing studies suggests that the catchment-specific carbon export varies in a relatively narrow range across different study regions and spatial scales.
Rémi Dupas, Andreas Musolff, James W. Jawitz, P. Suresh C. Rao, Christoph G. Jäger, Jan H. Fleckenstein, Michael Rode, and Dietrich Borchardt
Biogeosciences, 14, 4391–4407, https://doi.org/10.5194/bg-14-4391-2017, https://doi.org/10.5194/bg-14-4391-2017, 2017
Short summary
Short summary
Carbon and nutrient export regimes were analyzed from archetypal headwater catchments to
downstream reaches. In headwater catchments, land use and lithology determine
land-to-stream C, N and P transfer processes. The crucial role of riparian
zones in C, N and P coupling was investigated. In downstream reaches,
point-source contributions and in-stream processes alter C, N and P export
regimes.
Rose M. Smith, Sujay S. Kaushal, Jake J. Beaulieu, Michael J. Pennino, and Claire Welty
Biogeosciences, 14, 2831–2849, https://doi.org/10.5194/bg-14-2831-2017, https://doi.org/10.5194/bg-14-2831-2017, 2017
Short summary
Short summary
Urban streams receive excess nitrogen from numerous sources. We hypothesized that variations in carbon availability and subsurface infrastructure influence emissions of N2O and other greenhouse gases (CH4 and CO2) as excess N is utilized by microbes. We sampled eight streams draining four categories of stormwater and sanitary infrastructure. Dissolved nitrogen concentration was the strongest predictor of CO2 and N2O concentrations, while C : N ratio was the strongest predictor of CH4 in streams.
Benjamin Kupilas, Daniel Hering, Armin W. Lorenz, Christoph Knuth, and Björn Gücker
Biogeosciences, 14, 1989–2002, https://doi.org/10.5194/bg-14-1989-2017, https://doi.org/10.5194/bg-14-1989-2017, 2017
Short summary
Short summary
Modern ecosystem restoration should consider a wide range of environmental characteristics, including functional ones, such as rates and patterns of ecosystem metabolism. We show that hydromorphological river restoration enhanced habitat availability and abundance of macrophytes, promoting river primary productivity and respiration. Incorporating ecosystem functioning into monitoring programs enables a more holistic assessment of river health and a better understanding of restoration effects.
Julia Vanessa Kunz, Michael D. Annable, Jaehyun Cho, Wolf von Tümpling, Kirk Hatfield, Suresh Rao, Dietrich Borchardt, and Michael Rode
Biogeosciences, 14, 631–649, https://doi.org/10.5194/bg-14-631-2017, https://doi.org/10.5194/bg-14-631-2017, 2017
Short summary
Short summary
The hyporheic zone, the subsurface region of streams, is a key compartment for in-stream nutrient retention. Knowledge on actual hyporheic processing rates is still limited due to methodological restrictions which are mainly related to the high local and temporal variability of subsurface flow patterns and nutrient transformation processes. We present a new device which allows quantitative assessment of hyporheic nutrient fluxes and demonstrate its advantages in an exemplary field testing.
Jemma Louise Wadham, Jonathan Hawkings, Jon Telling, Dave Chandler, Jon Alcock, Emily O'Donnell, Preeti Kaur, Elizabeth Bagshaw, Martyn Tranter, Andre Tedstone, and Peter Nienow
Biogeosciences, 13, 6339–6352, https://doi.org/10.5194/bg-13-6339-2016, https://doi.org/10.5194/bg-13-6339-2016, 2016
Short summary
Short summary
Fjord and continental shelf environments in the polar regions are host to some of the planet's most productive ecosystems and support economically important fisheries. A key limiting nutrient for many of these marine phytoplankton is nitrogen. Here we evaluate the potential for a melting Greenland Ice Sheet to supply nitrogen to Arctic coastal ecosystems. We show nitrogen fluxes of a similar order of magnitude to one large Arctic river but yields that are double those typical of Arctic rivers.
Mi-Hee Lee, Jean-Lionel Payeur-Poirier, Ji-Hyung Park, and Egbert Matzner
Biogeosciences, 13, 5421–5432, https://doi.org/10.5194/bg-13-5421-2016, https://doi.org/10.5194/bg-13-5421-2016, 2016
Short summary
Short summary
Heavy storm events may increase the organic matter fluxes from forested watersheds and deteriorate water quality. Our study in two forested watershed in Korea revealed, that a larger proportion of coniferous forests likely leads to less organic carbon and larger of inorganic nitrogen fluxes to the receiving surface water bodies. More severe monsoon storms in the future will increase the fluxes of dissolved organic matter.
Thibault Lambert, Steven Bouillon, François Darchambeau, Philippe Massicotte, and Alberto V. Borges
Biogeosciences, 13, 5405–5420, https://doi.org/10.5194/bg-13-5405-2016, https://doi.org/10.5194/bg-13-5405-2016, 2016
Short summary
Short summary
This paper aims to investigate the spatial variability in dissolved organic matter (DOM) in terms of both concentration and composition in the Congo River network. Stable carbon isotopes and absorption and fluorescent properties of DOM were used as proxies for DOM composition. This study shows that DOM degradation within the Congo Basin results in the transition from aromatic to aliphatic DOM as well as the role of landscape and water residence time on this transition.
Tae Kyung Yoon, Hyojin Jin, Neung-Hwan Oh, and Ji-Hyung Park
Biogeosciences, 13, 3915–3930, https://doi.org/10.5194/bg-13-3915-2016, https://doi.org/10.5194/bg-13-3915-2016, 2016
Short summary
Short summary
Spray- and marble-type equilibrators and a membrane-enclosed CO2 sensor were compared to assess their suitability for continuous pCO2 measurements in inland waters. The results suggest that the fast response of the equilibration systems facilitates capturing large spatial variations in pCO2 during short underway measurements. The membrane-enclosed sensor would be suitable for long-term continuous measurements if biofouling could be overcome by antifouling measures such as copper mesh coverings.
Hongbing Ji, Cai Li, Huaijian Ding, and Yang Gao
Biogeosciences, 13, 3687–3699, https://doi.org/10.5194/bg-13-3687-2016, https://doi.org/10.5194/bg-13-3687-2016, 2016
Short summary
Short summary
The mineral composition, C / N ratios as well as 13C and 15N, of POC was firstly analyzed in suspended and surface sediments in the Wujiang River after the Three Gorges Dam began impounding sediment in 2004. A comparison of POC yield was made between karstic rivers and non-karstic rivers to evaluate the influence of carbonate distribution on POC transport. Considering the cascade reservoir and climate in the Wujiang River, the impacts of reservoirs and extreme drought were estimated in this study.
Johanna I. F. Slaets, Petra Schmitter, Thomas Hilger, Tran Duc Vien, and Georg Cadisch
Biogeosciences, 13, 3267–3281, https://doi.org/10.5194/bg-13-3267-2016, https://doi.org/10.5194/bg-13-3267-2016, 2016
Short summary
Short summary
Maize production on steep slopes causes erosion. Where the eroded material ends up is not well understood. This study assessed transport of sediment in mountainous Vietnam, where maize is cultivated on slopes and rice is cultivated in valleys. Per year, 64 tons per hectare of sediments are brought into the rice fields and 28 tons of those are deposited there. The sediment fraction captured by the paddies is mostly sandy, while fertile silt and clay are exported. Upland erosion thus impacts rice production.
Thibault Lambert, Cristian R. Teodoru, Frank C. Nyoni, Steven Bouillon, François Darchambeau, Philippe Massicotte, and Alberto V. Borges
Biogeosciences, 13, 2727–2741, https://doi.org/10.5194/bg-13-2727-2016, https://doi.org/10.5194/bg-13-2727-2016, 2016
Short summary
Short summary
This manuscript presents a detailed analysis of transport and transformation of dissolved organic matter along the Zambezi River and its largest tributary. A particular focus is put on the effects of floodplains/wetlands and reservoirs as well as low-flow vs. high-flow conditions on the longitudinal patterns in DOM concentration and composition. It is the first study to present such a detailed analysis for a whole, large river system, and in particular for a tropical river other than the Amazon.
Arthur H. W. Beusen, Alexander F. Bouwman, Ludovicus P. H. Van Beek, José M. Mogollón, and Jack J. Middelburg
Biogeosciences, 13, 2441–2451, https://doi.org/10.5194/bg-13-2441-2016, https://doi.org/10.5194/bg-13-2441-2016, 2016
Short summary
Short summary
Intensifying anthropogenic activity over the 20th century including agriculture, water consumption, urbanization, and aquaculture has almost doubled the global nitrogen (N) and phosphorus (P) delivery to streams and steadily increased the N : P ratio in freshwater bodies. Concurrently, the cumulative number of reservoirs has driven a rise in freshwater nutrient retention and removal. Still, river nutrient transport to the ocean has also nearly doubled, potentially stressing coastal environments.
Karen E. Frey, William V. Sobczak, Paul J. Mann, and Robert M. Holmes
Biogeosciences, 13, 2279–2290, https://doi.org/10.5194/bg-13-2279-2016, https://doi.org/10.5194/bg-13-2279-2016, 2016
Short summary
Short summary
In this study, we provide new findings with regards to the spatial distribution of dissolved organic matter (DOM) concentration, bioavailability, and optical properties during mid-summer hydrologic conditions throughout the Kolyma River basin in northeast Siberia. This is particularly critical for this region, where the future fate of organic carbon currently frozen in permafrost soils (and whether it ultimately is released as CO2 and CH4) is tightly linked to the lability of this material.
Oleg S. Pokrovsky, Rinat M. Manasypov, Sergey V. Loiko, Ivan A. Krickov, Sergey G. Kopysov, Larisa G. Kolesnichenko, Sergey N. Vorobyev, and Sergey N. Kirpotin
Biogeosciences, 13, 1877–1900, https://doi.org/10.5194/bg-13-1877-2016, https://doi.org/10.5194/bg-13-1877-2016, 2016
Short summary
Short summary
Climate change in western Siberia and permafrost boundary migration will essentially affect the elements controlled by underground water feeding (DIC, alkaline earth elements (Ca, Sr), oxyanions (Mo, Sb, As) and U). The thickening of the active layer may increase the export of trivalent and tetravalent hydrolysates in the form of organo-ferric colloids.
Jr-Chuan Huang, Tsung-Yu Lee, Teng-Chiu Lin, Thomas Hein, Li-Chin Lee, Yu-Ting Shih, Shuh-Ji Kao, Fuh-Kwo Shiah, and Neng-Huei Lin
Biogeosciences, 13, 1787–1800, https://doi.org/10.5194/bg-13-1787-2016, https://doi.org/10.5194/bg-13-1787-2016, 2016
Short summary
Short summary
The mean riverine DIN export of 49 watersheds in Taiwan is ∼ 3800 kg N km−2 yr−1, 18 times the global average. The mean riverine DIN export ratio is 0.30–0.51, which is much higher than the average of 0.20–0.25 of large rivers around the world, indicating excessive N input relative to ecosystem retention capacity. The DIN export ratio is positively related to agriculture input, and levels of human disturbance and watersheds with high DIN export ratios are likely at advanced stages of N excess.
Michael N. Gooseff, David Van Horn, Zachary Sudman, Diane M. McKnight, Kathleene A. Welch, and William B. Lyons
Biogeosciences, 13, 1723–1732, https://doi.org/10.5194/bg-13-1723-2016, https://doi.org/10.5194/bg-13-1723-2016, 2016
Short summary
Short summary
The landscape of the McMurdo Dry Valleys, Antarctica has been considered quite stable. In 2012, we discovered extensive permafrost degradation along several km of Crescent Stream. Here we document the responses to water quality, specifically changes to dissolved major ion and suspended sediment characteristics. Stream nitrate concentrations were greater than observed in the stream over the previous ~ 20 years, suggesting potentially significant impacts for stream and downstream lake ecosystems.
C. E. M. Lloyd, K. Michaelides, D. R. Chadwick, J. A. J. Dungait, and R. P. Evershed
Biogeosciences, 13, 551–566, https://doi.org/10.5194/bg-13-551-2016, https://doi.org/10.5194/bg-13-551-2016, 2016
Short summary
Short summary
Our interdisciplinary research brings together methodologies from hydrology, soil science and biogeochemistry to address key questions about the transport of cattle slurry in the environment. The paper provides a novel approach to trace dissolved and particulate components of cattle slurry through an experimental hillslope system. This work provides one of the first examples of using biomarkers to assess the effects of slope gradient and rainfall intensity on the movement of slurry derived-OM.
N. Geeraert, F. O. Omengo, G. Govers, and S. Bouillon
Biogeosciences, 13, 517–525, https://doi.org/10.5194/bg-13-517-2016, https://doi.org/10.5194/bg-13-517-2016, 2016
Short summary
Short summary
Rivers transport a large amount of carbon as dissolved organic carbon (DOC). Our incubation experiments on water of the Tana River, Kenya, showed that microbial decomposition of 10–60 % of the initial DOC occurred within the first 24–48 h. Simultaneously, there was a decrease in isotopic composition, indicating that DOC derived from C4 vegetation is preferentially decomposed. This has implications for the assessment of vegetation in a catchment based on isotope signatures of riverine carbon.
J. Temnerud, C. von Brömssen, J. Fölster, I. Buffam, J.-O. Andersson, L. Nyberg, and K. Bishop
Biogeosciences, 13, 399–413, https://doi.org/10.5194/bg-13-399-2016, https://doi.org/10.5194/bg-13-399-2016, 2016
Short summary
Short summary
In this study we test whether river outlet chemistry can be used as an additional source of information to improve the prediction of the total organic carbon (TOC) of headwaters, relative to models based on map information alone. Including river outlet TOC as a predictor in the models gave 5-15 % lower prediction errors than using map information alone. Thus, data on water chemistry measured at river outlets offer information which can complement GIS-based modelling of headwaters chemistry.
A. Hartmann, J. Kobler, M. Kralik, T. Dirnböck, F. Humer, and M. Weiler
Biogeosciences, 13, 159–174, https://doi.org/10.5194/bg-13-159-2016, https://doi.org/10.5194/bg-13-159-2016, 2016
Short summary
Short summary
We consider the time period before and after a wind disturbance in an Austrian karst system. Using a process-based flow and solute transport simulation model we estimate impacts on DIN and DOC. We show that DIN increases for several years, while DOC remains within its pre-disturbance variability. Simulated transit times indicate that impact passes through the hydrological system within some months but with a small fraction exceeding transit times of even a year.
J. Schelker, R. Sponseller, E. Ring, L. Högbom, S. Löfgren, and H. Laudon
Biogeosciences, 13, 1–12, https://doi.org/10.5194/bg-13-1-2016, https://doi.org/10.5194/bg-13-1-2016, 2016
Short summary
Short summary
The scientific question that is addressed in this study is how forest disturbance affects organic and inorganic nitrogen export from a boreal landscape. The key findings are that the mobilization of inorganic nitrogen from the terrestrial environment to streams increased strongly as a response to harvesting, but the stream network removed a major fraction of this load before it reached the outlet, while organic nitrogen was not removed and transported downstream.
S. Duan and S. S. Kaushal
Biogeosciences, 12, 7331–7347, https://doi.org/10.5194/bg-12-7331-2015, https://doi.org/10.5194/bg-12-7331-2015, 2015
Short summary
Short summary
There has been increased salinization of fresh water over decades during the urban evolution of watersheds. This study finds that salinization consistently increased sediment releases of labile organic carbon and total dissolved Kjeldahl nitrogen and sediment transformations of nitrate, and the salinization effects increased with percentage watershed urbanization. These findings are will be critical for forecasting changes in carbon and nutrient exports due to salt use in urban watersheds.
J. E. Vonk, S. E. Tank, W. B. Bowden, I. Laurion, W. F. Vincent, P. Alekseychik, M. Amyot, M. F. Billet, J. Canário, R. M. Cory, B. N. Deshpande, M. Helbig, M. Jammet, J. Karlsson, J. Larouche, G. MacMillan, M. Rautio, K. M. Walter Anthony, and K. P. Wickland
Biogeosciences, 12, 7129–7167, https://doi.org/10.5194/bg-12-7129-2015, https://doi.org/10.5194/bg-12-7129-2015, 2015
Short summary
Short summary
In this review, we give an overview of the current state of knowledge regarding how permafrost thaw affects aquatic systems. We describe the general impacts of thaw on aquatic ecosystems, pathways of organic matter and contaminant release and degradation, resulting emissions and burial, and effects on ecosystem structure and functioning. We conclude with an overview of potential climate effects and recommendations for future research.
J. E. Vonk, S. E. Tank, P. J. Mann, R. G. M. Spencer, C. C. Treat, R. G. Striegl, B. W. Abbott, and K. P. Wickland
Biogeosciences, 12, 6915–6930, https://doi.org/10.5194/bg-12-6915-2015, https://doi.org/10.5194/bg-12-6915-2015, 2015
Short summary
Short summary
We found that dissolved organic carbon (DOC) in arctic soils and aquatic systems is increasingly degradable with increasing permafrost extent. Also, DOC seems less degradable when moving down the fluvial network in continuous permafrost regions, i.e. from streams to large rivers, suggesting that highly bioavailable DOC is lost in headwater streams. We also recommend a standardized DOC incubation protocol to facilitate future comparison on processing and transport of DOC in a changing Arctic.
R. M. Cory, K. H. Harrold, B.T. Neilson, and G. W. Kling
Biogeosciences, 12, 6669–6685, https://doi.org/10.5194/bg-12-6669-2015, https://doi.org/10.5194/bg-12-6669-2015, 2015
Short summary
Short summary
This study investigates how sunlight, dissolved organic matter (DOM) concentration and composition, and hydrology interact to control DOM degradation in headwater streams. In Imnavait Creek, a shallow, low-relief stream in the Arctic, DOM degradation by sunlight was limited by light under all conditions. Study results were used to synthesize controls on DOM degradation by sunlight for a river reach, expressed as a function of light attenuation and water residence times.
O. S. Pokrovsky, R. M. Manasypov, S. Loiko, L. S. Shirokova, I. A. Krickov, B. G. Pokrovsky, L. G. Kolesnichenko, S. G. Kopysov, V. A. Zemtzov, S. P. Kulizhsky, S. N. Vorobyev, and S. N. Kirpotin
Biogeosciences, 12, 6301–6320, https://doi.org/10.5194/bg-12-6301-2015, https://doi.org/10.5194/bg-12-6301-2015, 2015
Short summary
Short summary
The governing parameter of DOC and major element concentrations and fluxes in western Siberia is latitude. High fluxes in the continuous permafrost zone of frozen peat bogs stem from the fact that the underlining mineral layer is not reactive, protected by the permafrost so that the major part of the active layer is located within the organic (peat) matrix and not the mineral matrix. Possible changes in export fluxes of DOC and major river water components under permafrost thaw are quantified.
D. Müller, T. Warneke, T. Rixen, M. Müller, S. Jamahari, N. Denis, A. Mujahid, and J. Notholt
Biogeosciences, 12, 5967–5979, https://doi.org/10.5194/bg-12-5967-2015, https://doi.org/10.5194/bg-12-5967-2015, 2015
Short summary
Short summary
Tropical peatlands are an important source of organic carbon to rivers. However, due to the remoteness of these ecosystems, data are scarce. We present the first combined assessment of both lateral organic carbon fluxes and CO2 emissions from an undisturbed tropical peat-draining river. Compared to the organic carbon concentrations, CO2 fluxes to the atmosphere were actually relatively moderate, which we attributed to the short water residence time.
B. M. Voss, B. Peucker-Ehrenbrink, T. I. Eglinton, R. G. M. Spencer, E. Bulygina, V. Galy, C. H. Lamborg, P. M. Ganguli, D. B. Montluçon, S. Marsh, S. L. Gillies, J. Fanslau, A. Epp, and R. Luymes
Biogeosciences, 12, 5597–5618, https://doi.org/10.5194/bg-12-5597-2015, https://doi.org/10.5194/bg-12-5597-2015, 2015
Short summary
Short summary
This study presents seasonal cycles of organic matter concentration and composition in the Fraser River. Dissolved organic matter patterns are linked to flushing of shallow soil layers during spring snowmelt and fall rain events. The preliminary Hg data set indicates significant changes in concentrations during the spring freshet. Organic carbon export, as both area-normalized yield and the proportion of basin primary productivity, in the Fraser River is typical of large rivers globally.
R. González-Pinzón, J. Mortensen, and D. Van Horn
Biogeosciences, 12, 5365–5369, https://doi.org/10.5194/bg-12-5365-2015, https://doi.org/10.5194/bg-12-5365-2015, 2015
Short summary
Short summary
Hall et al. (2013) presented a synthesis of 969 nutrient tracer experiments and used a scaling method to test the hypothesis that nutrient demand is constant with increasing stream size. In this comment we present a reanalysis of a subset of the data used by Hall et al. (2013) and propose that their correlations between nutrient uptake lengths and specific discharge are inadvertently spurious. Therefore, the conclusions derived from such correlations are debatable.
Cited articles
Ågren, A., Jansson, M., Ivarsson, H., Bishop, K., and Seibert, J.:
Seasonal and runoff-related changes in total organic carbon concentrations
in the River Öre, Northern Sweden, Aquat. Sci., 70, 21–29,
https://doi.org/10.1007/s00027-007-0943-9, 2007.
Ågren, A., Berggren, M., Laudon, H., and Jansson, M.: Terrestrial
export of highly bioavailable carbon from small boreal catchments in spring
floods, Freshwater Biol., 53, 964–972,
https://doi.org/10.1111/j.1365-2427.2008.01955.x, 2008.
Alarcon-Herrera, M. T., Bewtra, J. K., and Biswas, N.: Seasonal variations
in humic substances and their reduction through water treatment processes,
Can. J. Civil Eng., 21, 173–179, https://doi.org/10.1139/l94-020,
1994.
Allen, R. G., Pereira, L. S., Raes, D., and Smith, M.: Crop evapotranspiration-Guidelines for computing crop water requirements-FAO Irrigation and drainage paper 56, FAO, Rome,Italy, 300 pp., 1998.
Barrow, C. J.: World atlas of desertification (United nations environment
programme), edited by: Middleton, N.,Thomas, D. S. G., and Arnold, E., Land
Degrad. Dev., 3, 249–249, https://doi.org/10.1002/ldr.3400030407, 1992.
Battin, T. J., Luyssaert, S., Kaplan, L. A., Aufdenkampe, A. K., Richter,
A., and Tranvik, L. J.: The boundless carbon cycle, Nat. Geosci., 2,
598–600, https://doi.org/10.1038/ngeo618, 2009.
Berggren, M. and del Giorgio, P. A.: Distinct patterns of microbial
metabolism associated to riverine dissolved organic carbon of different
source and quality, J. Geophys. Res.-Biogeo., 120,
989–999, https://doi.org/10.1002/2015jg002963, 2015.
Bernal, S., Lupon, A., Catalán, N., Castelar, S., and Martí, E.:
Decoupling of dissolved organic matter patterns between stream and riparian
groundwater in a headwater forested catchment, Hydrol. Earth Syst.
Sci., 22, 1897–1910, https://doi.org/10.5194/hess-22-1897-2018, 2018.
Birkel, C., Soulsby, C., and Tetzlaff, D.: Integrating parsimonious models
of hydrological connectivity and soil biogeochemistry to simulate stream DOC
dynamics, J. Geophys. Res.-Biogeo., 119, 1030–1047, https://doi.org/10.1002/2013jg002551,
2014.
Birkel, C., Broder, T., and Biester, H.: Nonlinear and threshold-dominated
runoff generation controls DOC export in a small peat catchment, J.
Geophys. Res.-Biogeo., 122, 498–513,
https://doi.org/10.1002/2016jg003621, 2017.
Bishop, K., Seibert, J., Köhler, S., and Laudon, H.: Resolving the
Double Paradox of rapidly mobilized old water with highly variable responses
in runoff chemistry, Hydrol. Process., 18, 185–189,
https://doi.org/10.1002/hyp.5209, 2004.
Bishop, K. H., Grip, H., and O'Neill, A.: The origins of acid runoff in a
hillslope during storm events, J. Hydrol., 116, 35–61,
https://doi.org/10.1016/0022-1694(90)90114-d, 1990.
Botter, G., Basso, S., Rodriguez-Iturbe, I., and Rinaldo, A.: Resilience of
river flow regimes, P. Natl. Acad. Sci., 110,
12925–12930, https://doi.org/10.1073/pnas.1311920110, 2013.
Broder, T., Knorr, K. H., and Biester, H.: Changes in dissolved organic
matter quality in a peatland and forest headwater stream as a function of
seasonality and hydrologic conditions, Hydrol. Earth Syst. Sci., 21,
2035–2051, https://doi.org/10.5194/hess-21-2035-2017, 2017.
Buffam, I., Galloway, J. N., Blum, L. K., and McGlathery, K. J.: A
stormflow/baseflow comparison of dissolved organic matter concentrations and
bioavailability in an Appalachian stream, Biogeochemistry, 53, 269–306,
https://doi.org/10.1023/a:1010643432253, 2001.
Chen, M., Kim, S., Park, J. E., Jung, H. J., and Hur, J.: Structural and
compositional changes of dissolved organic matter upon solid-phase
extraction tracked by multiple analytical tools, Anal. Bioanal. Chem., 408,
6249–6258, https://doi.org/10.1007/s00216-016-9728-0, 2016.
Christ, M. J. and David, M. B.: Temperature and moisture effects on the
production of dissolved organic carbon in a Spodosol, Soil Biol.
Biochem., 28, 1191–1199,
https://doi.org/10.1016/0038-0717(96)00120-4, 1996.
Clark, J. M., Chapman, P. J., Adamson, J. K., and Lane, S. N.: Influence of
drought-induced acidification on the mobility of dissolved organic carbon in
peat soils, Glob. Change Biol., 11, 791–809,
https://doi.org/10.1111/j.1365-2486.2005.00937.x, 2005.
Creed, I. F., McKnight, D. M., Pellerin, B., Green, M. B., Bergamaschi, B.,
Aiken, G. R., Burns, D. A., Findlay, S. E. G., Shanley, J. B., Striegl, R.
G., Aulenbach, B. T., Clow, D. W., Laudon, H., McGlynn, B. L., McGuire, K.
J., Smith, R. A., and Stackpoole, S. M.: The river as a chemostat: fresh
perspectives on dissolved organic matter flowing down the river continuum,
Can. J. Fish. Aquat. Sci., 72, 1272–1285,
https://doi.org/10.1139/cjfas-2014-0400, 2015.
Etheridge, J. R., Birgand, F., Osborne, J. A., Osburn, C. L., Burchell, M.
R., and Irving, J.: Using in situ ultraviolet-visual spectroscopy to measure
nitrogen, carbon, phosphorus, and suspended solids concentrations at a high
frequency in a brackish tidal marsh, Limnol. Oceanogr.-Method.,
12, 10–22, https://doi.org/10.4319/lom.2014.12.10, 2014.
Fox, J. and Weisberg, S.: An R Companion to
Applied Regression, Sage, 608 pp., 2011.
Frei, S., Lischeid, G., and Fleckenstein, J. H.: Effects of micro-topography
on surface–subsurface exchange and runoff generation in a virtual riparian
wetland – A modeling study, Adv. Water Resour., 33, 1388–1401,
https://doi.org/10.1016/j.advwatres.2010.07.006, 2010.
Futter, M. N. and de Wit, H. A.: Testing seasonal and long-term controls of
streamwater DOC using empirical and process-based models, Sci. Total Environ.,
407, 698–707, https://doi.org/10.1016/j.scitotenv.2008.10.002, 2008.
Garcia-Pausas, J., Casals, P., Camarero, L., Huguet, C., Thompson, R.,
Sebastià, M.-T., and Romanyà, J.: Factors regulating carbon
mineralization in the surface and subsurface soils of Pyrenean mountain
grasslands, Soil Biol. Biochem., 40, 2803–2810,
https://doi.org/10.1016/j.soilbio.2008.08.001, 2008.
Guarch-Ribot, A. and Butturini, A.: Hydrological conditions regulate
dissolved organic matter quality in an intermittent headwater stream. From
drought to storm analysis, Sci. Total Environ., 571, 1358–1369,
https://doi.org/10.1016/j.scitotenv.2016.07.060, 2016.
Gustard, A. and Demuth, S.: Manual on Low-flow Estimation and Prediction,
World Meteorological Organization (WMO), 136 pp., 2009.
Hansen, A. M., Kraus, T. E. C., Pellerin, B. A., Fleck, J. A., Downing, B.
D., and Bergamaschi, B. A.: Optical properties of dissolved organic matter
(DOM): Effects of biological and photolytic degradation, Limnol.
Oceanogr., 61, 1015–1032, https://doi.org/10.1002/lno.10270, 2016.
Helms, J. R., Stubbins, A., Ritchie, J. D., Minor, E. C., Kieber, D. J., and
Mopper, K.: Absorption spectral slopes and slope ratios as indicators of
molecular weight, source, and photobleaching of chromophoric dissolved
organic matter, Limnol. Oceanogr., 53, 955–969,
https://doi.org/10.4319/lo.2008.53.3.0955, 2008.
Herzsprung, P., von Tumpling, W., Hertkorn, N., Harir, M., Buttner, O.,
Bravidor, J., Friese, K., and Schmitt-Kopplin, P.: Variations of DOM quality
in inflows of a drinking water reservoir: linking of van Krevelen diagrams
with EEMF spectra by rank correlation, Environ. Sci. Technol., 46, 5511–5518,
https://doi.org/10.1021/es300345c, 2012.
Hood, E., Gooseff, M. N., and Johnson, S. L.: Changes in the character of
stream water dissolved organic carbon during flushing in three small
watersheds, Oregon, J. Geophys. Res.-Biogeo., 111, G01007, https://doi.org/10.1029/2005jg000082, 2006.
Hope, D., Billett, M. F., and Cresser, M. S.: A review of the export of
carbon in river water: Fluxes and processes, Environ. Pollut., 84,
301–324, https://doi.org/10.1016/0269-7491(94)90142-2, 1994.
Hrachowitz, M., Benettin, P., van Breukelen, B. M., Fovet, O., Howden, N. J.
K., Ruiz, L., van der Velde, Y., and Wade, A. J.: Transit times-the link
between hydrology and water quality at the catchment scale, Wiley
Interdisciplinary Reviews: Water, 3, 629–657, https://doi.org/10.1002/wat2.1155, 2016.
Hruška, J., Krám, P., McDowell, W. H., and Oulehle, F.: Increased Dissolved Organic Carbon (DOC) in Central European Streams is Driven by Reductions in Ionic Strength Rather than Climate Change or Decreasing Acidity, Environ. Sci. Technol., 43, 4320–4326, https://doi.org/10.1021/es803645w, 2009.
Hutchins, R. H. S., Aukes, P., Schiff, S. L., Dittmar, T., Prairie, Y. T.,
and del Giorgio, P. A.: The Optical, Chemical, and Molecular Dissolved
Organic Matter Succession Along a Boreal Soil-Stream-River Continuum,
J. Geophys. Res.-Biogeo., 122, 2892–2908,
https://doi.org/10.1002/2017jg004094, 2017.
Inamdar, S., Finger, N., Singh, S., Mitchell, M., Levia, D., Bais, H.,
Scott, D., and McHale, P.: Dissolved organic matter (DOM) concentration and
quality in a forested mid-Atlantic watershed, USA, Biogeochemistry, 108,
55–76, https://doi.org/10.1007/s10533-011-9572-4, 2011.
Jawitz, J. W. and Mitchell, J.: Temporal inequality in catchment discharge
and solute export, Water Resour. Res., 47, W00J14, https://doi.org/10.1029/2010WR010197,
2011.
Kaiser, K. and Kalbitz, K.: Cycling downwards – dissolved organic matter in
soils, Soil Biol. Biochem., 52, 29–32,
https://doi.org/10.1016/j.soilbio.2012.04.002, 2012.
Kalbitz, K., Solinger, S., Park, J.-H., Michalzik, B., and Matzner, E.:
Controls on the dynamics of dissolved organic matter in soils: a review,
Soil Sci., 165, 277–304, 2000.
Kaplan, L. A., Wiegner, T. N., Newbold, J. D., Ostrom, P. H., and Gandhi,
H.: Untangling the complex issue of dissolved organic carbon uptake: a
stable isotope approach, Freshwater Biol., 53, 855–864,
https://doi.org/10.1111/j.1365-2427.2007.01941.x, 2008.
Koffler, D., Gauster, T., and Laaha, G.: lfstat: Calculation of Low Flow
Statistics for Daily Stream Flow Data, R package version 0.9.4, 2016.
Köhler, S., Buffam, I., Jonsson, A., and Bishop, K.: Photochemical and
microbial processing of stream and soil water dissolved organic matter in a
boreal forested catchment in northern Sweden, Aquat. Sci., 64, 269–281,
https://doi.org/10.1007/s00027-002-8071-z, 2002.
Köhler, S. J., Buffam, I., Laudon, H., and Bishop, K. H.: Climate's
control of intra-annual and interannual variability of total organic carbon
concentration and flux in two contrasting boreal landscape elements, J.
Geophys. Res., 113, G03012, https://doi.org/10.1029/2007jg000629, 2008.
Köhler, S. J., Buffam, I., Seibert, J., Bishop, K. H., and Laudon, H.:
Dynamics of stream water TOC concentrations in a boreal headwater catchment:
Controlling factors and implications for climate scenarios, J.
Hydrol., 373, 44–56, https://doi.org/10.1016/j.jhydrol.2009.04.012, 2009.
Kottek, M., Grieser, J., Beck, C., Rudolf, B., and Rubel, F.: World Map of
the Köppen-Geiger climate classification updated, Meteorol.
Z., 15, 259–263, https://doi.org/10.1127/0941-2948/2006/0130, 2006.
Laudon, H., Sjöblom, V., Buffam, I., Seibert, J., and Mörth, M.: The
role of catchment scale and landscape characteristics for runoff generation
of boreal streams, J. Hydrol., 344, 198–209,
https://doi.org/10.1016/j.jhydrol.2007.07.010, 2007.
Laudon, H., Buttle, J., Carey, S. K., McDonnell, J., McGuire, K., Seibert,
J., Shanley, J., Soulsby, C., and Tetzlaff, D.: Cross-regional prediction of
long-term trajectory of stream water DOC response to climate change,
Geophys. Res. Lett., 39, L18404, https://doi.org/10.1029/2012gl053033, 2012.
Ledesma, J. L., Grabs, T., Bishop, K. H., Schiff, S. L., and Kohler, S. J.:
Potential for long-term transfer of dissolved organic carbon from riparian
zones to streams in boreal catchments, Glob. Change Biol., 21, 2963–2979,
https://doi.org/10.1111/gcb.12872, 2015.
Ledesma, J. L. J., Kothawala, D. N., Bastviken, P., Maehder, S., Grabs, T.,
and Futter, M. N.: Stream Dissolved Organic Matter Composition Reflects the
Riparian Zone, Not Upslope Soils in Boreal Forest Headwaters, Water
Resour. Res., 54, 3896–3912, https://doi.org/10.1029/2017WR021793, 2018.
Luke, S. H., Luckai, N. J., Burke, J. M., and Prepas, E. E.: Riparian areas
in the Canadian boreal forest and linkages with water quality in streams,
Environ. Rev., 15, 79–97, https://doi.org/10.1139/A07-001, 2007.
Marquardt, D. W.: Generalized Inverses, Ridge Regression, Biased Linear
Estimation, and Nonlinear Estimation, Technometrics, 12, 591–612,
https://doi.org/10.2307/1267205, 1970.
Menard, S.: Applied logistic regression analysis, SAGE publications, 128 pp., 2001.
Mevik, B.-H. and Wehrens, R.: The pls Package: Principal Component and Partial
Least Squares Regression in R, J. Stat. Softw., 18, 128 pp.,
https://doi.org/10.18637/jss.v018.i02, 2007.
Moatar, F., Abbott, B. W., Minaudo, C., Curie, F., and Pinay, G.: Elemental
properties, hydrology, and biology interact to shape concentration-discharge
curves for carbon, nutrients, sediment, and major ions, Water Resour.
Res., 53, 1270–1287, https://doi.org/10.1002/2016wr019635, 2017.
Mueller, C., Zink, M., Samaniego, L., Krieg, R., Merz, R., Rode, M., and
Knöller, K.: Discharge Driven Nitrogen Dynamics in a Mesoscale River
Basin As Constrained by Stable Isotope Patterns, Environ. Sci.
Technol., 50, 9187–9196, https://doi.org/10.1021/acs.est.6b01057, 2016.
Musolff, A., Schmidt, C., Selle, B., and Fleckenstein, J. H.: Catchment
controls on solute export, Adv. Water Resour., 86, 133–146,
https://doi.org/10.1016/j.advwatres.2015.09.026, 2015.
Musolff, A., Selle, B., Büttner, O., Opitz, M., and Tittel, J.:
Unexpected release of phosphate and organic carbon to streams linked to
declining nitrogen depositions, Glob. Change Biol., 23, 1891–1901,
https://doi.org/10.1111/gcb.13498, 2017.
Musolff, A., Fleckenstein, J. H., Opitz, M., Büttner, O., Kumar, R., and
Tittel, J.: Spatio-temporal controls of dissolved organic carbon stream
water concentrations, J. Hydrol., 566, 205–215, https://doi.org/10.1016/j.jhydrol.2018.09.011, 2018.
Nimick, D. A., Gammons, C. H., and Parker, S. R.: Diel biogeochemical
processes and their effect on the aqueous chemistry of streams: A review,
Chem. Geol., 283, 3–17,
https://doi.org/10.1016/j.chemgeo.2010.08.017, 2011.
Preston, M. D., Eimers, M. C., and Watmough, S. A.: Effect of moisture and
temperature variation on DOC release from a peatland: Conflicting results
from laboratory, field and historical data analysis, Sci. Total
Environ., 409, 1235–1242,
https://doi.org/10.1016/j.scitotenv.2010.12.027, 2011.
Raeke, J., Lechtenfeld, O. J., Tittel, J., Oosterwoud, M. R., Bornmann, K.,
and Reemtsma, T.: Linking the mobilization of dissolved organic matter in
catchments and its removal in drinking water treatment to its molecular
characteristics, Water Res., 113, 149–159, https://doi.org/10.1016/j.watres.2017.01.066,
2017.
R-Core-Team: R: A Language and Environment for Statistical Computing, R Foundation for Statistical Computing, 2017.
Rode, M., Wade, A. J., Cohen, M. J., Hensley, R. T., Bowes, M. J., Kirchner,
J. W., Arhonditsis, G. B., Jordan, P., Kronvang, B., Halliday, S. J.,
Skeffington, R. A., Rozemeijer, J. C., Aubert, A. H., Rinke, K., and Jomaa,
S.: Sensors in the Stream: The High-Frequency Wave of the Present, Environ.
Sci. Technol., 50, 10297–10307, https://doi.org/10.1021/acs.est.6b02155, 2016.
Rodhe, A.: On the Generation of Stream Runoff in Till Soils: Paper presented
at the Nordic Hydrological Conference (Rovaniemi, Finland, August – 1988),
Hydrol. Res., 20, 1–8, https://doi.org/10.2166/nh.1989.0001, 1989.
Rodríguez-Iturbe, I., Ijjász-Vásquez, E. J., Bras, R. L., and
Tarboton, D. G.: Power law distributions of discharge mass and energy in
river basins, Water Resour. Res., 28, 1089–1093,
https://doi.org/10.1029/91WR03033, 1992.
Roth, V.-N., Dittmar, T., Gaupp, R., and Gleixner, G.: Latitude and pH
driven trends in the molecular composition of DOM across a north south
transect along the Yenisei River, Geochim. Cosmochim. Ac., 123,
93–105, https://doi.org/10.1016/j.gca.2013.09.002, 2013.
Samaniego, L., Kumar, R., and Attinger, S.: Multiscale parameter
regionalization of a grid-based hydrologic model at the mesoscale, Water
Resour. Res., 46, W05523, https://doi.org/10.1029/2008wr007327, 2010.
Sanderman, J., Lohse, K. A., Baldock, J. A., and Amundson, R.: Linking soils
and streams: Sources and chemistry of dissolved organic matter in a small
coastal watershed, Water Resour. Res., 45, W03418, https://doi.org/10.1029/2008wr006977,
2009.
Seibert, J., Grabs, T., Köhler, S., Laudon, H., Winterdahl, M., and Bishop, K.: Linking soil- and stream-water chemistry based on a Riparian Flow-Concentration Integration Model, Hydrol. Earth Syst. Sci., 13, 2287–2297, https://doi.org/10.5194/hess-13-2287-2009, 2009.
Shang, P., Lu, Y., Du, Y., Jaffé, R., Findlay, R. H., and Wynn, A.:
Climatic and watershed controls of dissolved organic matter variation in
streams across a gradient of agricultural land use, Sci. Total
Environ., 612, 1442–1453,
https://doi.org/10.1016/j.scitotenv.2017.08.322, 2018.
Shen, Y., Chapelle, F. H., Strom, E. W., and Benner, R.: Origins and
bioavailability of dissolved organic matter in groundwater, Biogeochemistry,
122, 61–78, https://doi.org/10.1007/s10533-014-0029-4, 2015.
Spencer, R. G. M., Butler, K. D., and Aiken, G. R.: Dissolved organic carbon
and chromophoric dissolved organic matter properties of rivers in the USA,
J. Geophys. Res.-Biogeo., 117, G03001,
https://doi.org/10.1029/2011jg001928, 2012.
Stewart, A. and Wetzel, R.: Dissolved humic materials: Photodegradation,
sediment effects, and reactivity with phosphate and calcium carbonate
precipitation, Arch. Hydrobiol., 92, 265–286, 1981.
Strohmeier, S., Knorr, K. H., Reichert, M., Frei, S., Fleckenstein, J. H.,
Peiffer, S., and Matzner, E.: Concentrations and fluxes of dissolved organic
carbon in runoff from a forested catchment: insights from high frequency
measurements, Biogeosciences, 10, 905–916, https://doi.org/10.5194/bg-10-905-2013, 2013.
Tunaley, C., Tetzlaff, D., Lessels, J., and Soulsby, C.: Linking
high-frequency DOC dynamics to the age of connected water sources, Water
Resour. Res., 52, 5232–5247, https://doi.org/10.1002/2015wr018419, 2016.
Vaughan, M. C. H., Bowden, W. B., Shanley, J. B., Vermilyea, A., Sleeper,
R., Gold, A. J., Pradhanang, S. M., Inamdar, S. P., Levia, D. F., Andres, A.
S., Birgand, F., and Schroth, A. W.: High-frequency dissolved organic carbon
and nitrate measurements reveal differences in storm hysteresis and loading
in relation to land cover and seasonality, Water Resour. Res., 53,
5345–5363, https://doi.org/10.1002/2017wr020491, 2017.
Weishaar, J. L., Aiken, G. R., Bergamaschi, B. A., Fram, M. S., Fujii, R.,
and Mopper, K.: Evaluation of Specific Ultraviolet Absorbance as an
Indicator of the Chemical Composition and Reactivity of Dissolved Organic
Carbon, Environ. Sci. Technol., 37, 4702–4708,
https://doi.org/10.1021/es030360x, 2003.
Werner, B. J.: High frequency dataset of the upper Rappbode Catchment in the Harz Mountains, Germany, https://doi.org/10.4211/hs.e0e6fbc0571149b79b1e75fa44d5c4ab, last access: 14 May 2019.
Winterdahl, M., Laudon, H., Lyon, S. W., Pers, C., and Bishop, K.:
Sensitivity of stream dissolved organic carbon to temperature and discharge:
Implications of future climates, J. Geophys. Res.-Biogeo., 121, 126–144, https://doi.org/10.1002/2015jg002922, 2016.
Wollschläger, U., Attinger, S., Borchardt, D., Brauns, M., Cuntz, M.,
Dietrich, P., Fleckenstein, J. H., Friese, K., Friesen, J., Harpke, A.,
Hildebrandt, A., Jäckel, G., Kamjunke, N., Knöller, K., Kögler,
S., Kolditz, O., Krieg, R., Kumar, R., Lausch, A., Liess, M., Marx, A.,
Merz, R., Mueller, C., Musolff, A., Norf, H., Oswald, S. E., Rebmann, C.,
Reinstorf, F., Rode, M., Rink, K., Rinke, K., Samaniego, L., Vieweg, M.,
Vogel, H.-J., Weitere, M., Werban, U., Zink, M., and Zacharias, S.: The Bode
hydrological observatory: a platform for integrated, interdisciplinary
hydro-ecological research within the TERENO Harz/Central German Lowland
Observatory, Environ. Earth Sci., 76, 29 pp.,
https://doi.org/10.1007/s12665-016-6327-5, 2016.
Zarnetske, J. P., Bouda, M., Abbott, B. W., Saiers, J., and Raymond, P. A.:
Generality of Hydrologic Transport Limitation of Watershed Organic Carbon
Flux Across Ecoregions of the United States, Geophys. Res. Lett.,
45, 11702–711711, https://doi.org/10.1029/2018gl080005, 2018.
Search articles
Short summary
Increased dissolved organic carbon (DOC) concentration in streams can pose a threat to downstream water resources. Analyzing data from an in-stream probe we found that hydroclimatic and hydrological drivers can describe up to 72 % of the observed DOC concentration and composition variability. Variability was found to be highest during discharge events with warm and dry preconditions. The findings suggest an impact of climate change on DOC exports and thus also on downstream water quality.
Increased dissolved organic carbon (DOC) concentration in streams can pose a threat to...
Biogeosciences
An interactive open-access journal of the European Geosciences Union
All site content, except where otherwise noted, is licensed under the Creative Commons Attribution 4.0 License.