Articles | Volume 16, issue 5
https://doi.org/10.5194/bg-16-1053-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-16-1053-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
15 Mar 2019
Research article |
| 15 Mar 2019
| 15 Mar 2019
Synchrony in catchment stream colour levels is driven by both local and regional climate
Brian C. Doyle
CORRESPONDING AUTHOR
Centre for Freshwater and Environmental Studies (CFES), Dundalk
Institute of Technology, Dundalk, Co. Louth, Ireland
Fisheries and
Ecosystems Advisory Services (FEAS), Marine Institute, Furnace, Co. Mayo,
Ireland
Elvira de Eyto
Fisheries and
Ecosystems Advisory Services (FEAS), Marine Institute, Furnace, Co. Mayo,
Ireland
Mary Dillane
Fisheries and
Ecosystems Advisory Services (FEAS), Marine Institute, Furnace, Co. Mayo,
Ireland
Russell Poole
Fisheries and
Ecosystems Advisory Services (FEAS), Marine Institute, Furnace, Co. Mayo,
Ireland
Valerie McCarthy
Centre for Freshwater and Environmental Studies (CFES), Dundalk
Institute of Technology, Dundalk, Co. Louth, Ireland
Elizabeth Ryder
Fisheries and
Ecosystems Advisory Services (FEAS), Marine Institute, Furnace, Co. Mayo,
Ireland
School of Biological, Earth and Environmental Sciences
(BEES), University College Cork, College Road, Cork, Co. Cork,
Ireland
Eleanor Jennings
Centre for Freshwater and Environmental Studies (CFES), Dundalk
Institute of Technology, Dundalk, Co. Louth, Ireland
Related authors
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François Clayer, Leah Jackson-Blake, Daniel Mercado-Bettín, Muhammed Shikhani, Andrew French, Tadhg Moore, James Sample, Magnus Norling, Maria-Dolores Frias, Sixto Herrera, Elvira de Eyto, Eleanor Jennings, Karsten Rinke, Leon van der Linden, and Rafael Marcé
Hydrol. Earth Syst. Sci., 27, 1361–1381, https://doi.org/10.5194/hess-27-1361-2023, https://doi.org/10.5194/hess-27-1361-2023, 2023
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We assessed the predictive skill of forecasting tools over the next season for water discharge and lake temperature. Tools were forced with seasonal weather predictions; however, most of the prediction skill originates from legacy effects and not from seasonal weather predictions. Yet, when skills from seasonal weather predictions are present, additional skill comes from interaction effects. Skilful lake seasonal predictions require better weather predictions and realistic antecedent conditions.
Malgorzata Golub, Wim Thiery, Rafael Marcé, Don Pierson, Inne Vanderkelen, Daniel Mercado-Bettin, R. Iestyn Woolway, Luke Grant, Eleanor Jennings, Benjamin M. Kraemer, Jacob Schewe, Fang Zhao, Katja Frieler, Matthias Mengel, Vasiliy Y. Bogomolov, Damien Bouffard, Marianne Côté, Raoul-Marie Couture, Andrey V. Debolskiy, Bram Droppers, Gideon Gal, Mingyang Guo, Annette B. G. Janssen, Georgiy Kirillin, Robert Ladwig, Madeline Magee, Tadhg Moore, Marjorie Perroud, Sebastiano Piccolroaz, Love Raaman Vinnaa, Martin Schmid, Tom Shatwell, Victor M. Stepanenko, Zeli Tan, Bronwyn Woodward, Huaxia Yao, Rita Adrian, Mathew Allan, Orlane Anneville, Lauri Arvola, Karen Atkins, Leon Boegman, Cayelan Carey, Kyle Christianson, Elvira de Eyto, Curtis DeGasperi, Maria Grechushnikova, Josef Hejzlar, Klaus Joehnk, Ian D. Jones, Alo Laas, Eleanor B. Mackay, Ivan Mammarella, Hampus Markensten, Chris McBride, Deniz Özkundakci, Miguel Potes, Karsten Rinke, Dale Robertson, James A. Rusak, Rui Salgado, Leon van der Linden, Piet Verburg, Danielle Wain, Nicole K. Ward, Sabine Wollrab, and Galina Zdorovennova
Geosci. Model Dev., 15, 4597–4623, https://doi.org/10.5194/gmd-15-4597-2022, https://doi.org/10.5194/gmd-15-4597-2022, 2022
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Lakes and reservoirs are warming across the globe. To better understand how lakes are changing and to project their future behavior amidst various sources of uncertainty, simulations with a range of lake models are required. This in turn requires international coordination across different lake modelling teams worldwide. Here we present a protocol for and results from coordinated simulations of climate change impacts on lakes worldwide.
Leah A. Jackson-Blake, François Clayer, Elvira de Eyto, Andrew S. French, María Dolores Frías, Daniel Mercado-Bettín, Tadhg Moore, Laura Puértolas, Russell Poole, Karsten Rinke, Muhammed Shikhani, Leon van der Linden, and Rafael Marcé
Hydrol. Earth Syst. Sci., 26, 1389–1406, https://doi.org/10.5194/hess-26-1389-2022, https://doi.org/10.5194/hess-26-1389-2022, 2022
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We explore, together with stakeholders, whether seasonal forecasting of water quantity, quality, and ecology can help support water management at five case study sites, primarily in Europe. Reliable forecasting, a season in advance, has huge potential to improve decision-making. However, managers were reluctant to use the forecasts operationally. Key barriers were uncertainty and often poor historic performance. The importance of practical hands-on experience was also highlighted.
Harriet L. Wilson, Ana I. Ayala, Ian D. Jones, Alec Rolston, Don Pierson, Elvira de Eyto, Hans-Peter Grossart, Marie-Elodie Perga, R. Iestyn Woolway, and Eleanor Jennings
Hydrol. Earth Syst. Sci., 24, 5559–5577, https://doi.org/10.5194/hess-24-5559-2020, https://doi.org/10.5194/hess-24-5559-2020, 2020
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Lakes are often described in terms of vertical layers. The
epilimnionrefers to the warm surface layer that is homogeneous due to mixing. The depth of the epilimnion can influence air–water exchanges and the vertical distribution of biological variables. We compared various methods for defining the epilimnion layer and found large variability between methods. Certain methods may be better suited for applications such as multi-lake comparison and assessing the impact of climate change.
Related subject area
Biogeochemistry: Rivers & Streams
Geomorphologic controls and anthropogenic impacts on dissolved organic carbon from mountainous rivers: insights from optical properties and carbon isotopes
Seasonal carbon dynamics of the Kolyma River tributaries, Siberia
Alkalinity generation from carbonate weathering in a silicate-dominated headwater catchment at Iskorasfjellet, northern Norway
Physical and stoichiometric controls on stream respiration in a headwater stream
Local processes with a global impact: unraveling the dynamics of gas evasion in a step-and-pool configuration
Complex dissolved organic matter (DOM) on the roof of the world – Tibetan DOM molecular characteristics indicate sources, land use effects, and processing along the fluvial–limnic continuum
Maximum respiration rates in hyporheic zone sediments are primarily constrained by organic carbon concentration and secondarily by organic matter chemistry
Glacier loss and vegetation expansion alter organic and inorganic carbon dynamics in high-mountain streams
Particulate organic matter in the Lena River and its delta: from the permafrost catchment to the Arctic Ocean
Stable isotopic evidence for the excess leaching of unprocessed atmospheric nitrate from forested catchments under high nitrogen saturation
Nitrogen isotopes reveal a particulate-matter-driven biogeochemical reactor in a temperate estuary
High-resolution vertical biogeochemical profiles in the hyporheic zone reveal insights into microbial methane cycling
Organic matter transformations are disconnected between surface water and the hyporheic zone
CO2 emissions from peat-draining rivers regulated by water pH
Effects of peatland management on aquatic carbon concentrations and fluxes
Resistance and resilience of stream metabolism to high flow disturbances
Enhanced bioavailability of dissolved organic matter (DOM) in human-disturbed streams in Alpine fluvial networks
Spatial and temporal variability of pCO2 and CO2 emissions from the Dong River in south China
Fluvial carbon dioxide emission from the Lena River basin during the spring flood
Diel patterns in stream nitrate concentration produced by in-stream processes
Complex interactions of in-stream dissolved organic matter and nutrient spiralling unravelled by Bayesian regression analysis
Spatial–temporal variations in riverine carbon strongly influenced by local hydrological events in an alpine catchment
Rapid soil organic carbon decomposition in river systems: effects of the aquatic microbial community and hydrodynamical disturbance
Increased carbon capture by a silicate-treated forested watershed affected by acid deposition
Thermokarst amplifies fluvial inorganic carbon cycling and export across watershed scales on the Peel Plateau, Canada
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
High-frequency measurements explain quantity and quality of dissolved organic carbon mobilization in a headwater catchment
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
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)
Shuai Chen, Jun Zhong, Lishan Ran, Yuanbi Yi, Wanfa Wang, Zelong Yan, Si-liang Li, and Khan M. G. Mostofa
Biogeosciences, 20, 4949–4967, https://doi.org/10.5194/bg-20-4949-2023, https://doi.org/10.5194/bg-20-4949-2023, 2023
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This study found the source of dissolved organic carbon and its optical properties (e.g., aromaticity, humification) are related to human land use and catchment slope in anthropogenically impacted subtropical mountainous rivers. The study highlights that the combination of dual carbon isotopes and optical properties represents a useful tool in tracing the origin of dissolved organic carbon and its in-stream processes.
Kirsi H. Keskitalo, Lisa Bröder, Tommaso Tesi, Paul J. Mann, Dirk J. Jong, Sergio Bulte Garcia, Anna Davydova, Sergei Davydov, Nikita Zimov, Negar Haghipour, Timothy I. Eglinton, and Jorien E. Vonk
EGUsphere, https://doi.org/10.5194/egusphere-2023-1792, https://doi.org/10.5194/egusphere-2023-1792, 2023
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Permafrost thaw releases organic carbon into waterways. Decomposition of this carbon pool generates greenhouse gases that vent into the atmosphere enhancing climate warming. We show that Arctic river carbon and water chemistry is very different between the spring ice break-up and summer. However, primary production is initiated in small Arctic rivers right after ice break-up, in contrast to large rivers. This may have implications on fluvial carbon dynamics and venting of greenhouse gases.
Nele Lehmann, Hugues Lantuit, Michael Ernst Böttcher, Jens Hartmann, Antje Eulenburg, and Helmuth Thomas
Biogeosciences, 20, 3459–3479, https://doi.org/10.5194/bg-20-3459-2023, https://doi.org/10.5194/bg-20-3459-2023, 2023
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Riverine alkalinity in the silicate-dominated headwater catchment at subarctic Iskorasfjellet, northern Norway, was almost entirely derived from weathering of minor carbonate occurrences in the riparian zone. The uphill catchment appeared limited by insufficient contact time of weathering agents and weatherable material. Further, alkalinity increased with decreasing permafrost extent. Thus, with climate change, alkalinity generation is expected to increase in this permafrost-degrading landscape.
Jancoba Dorley, Joel Singley, Tim Covino, Kamini Singha, Michael Gooseff, David Van Horn, and Ricardo González-Pinzón
Biogeosciences, 20, 3353–3366, https://doi.org/10.5194/bg-20-3353-2023, https://doi.org/10.5194/bg-20-3353-2023, 2023
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We quantified how microbial respiration is controlled by discharge and the supply of C, N, and P in a stream. We ran two rounds of experiments adding a conservative tracer, an indicator of aerobic respiration, and nutrient treatments: a) N, b) N+C, c) N+P, and d) C+N+P. Microbial respiration remained similar between rounds and across nutrient treatments. This suggests that complex interactions between hydrology, resource supply, and biological community drive in-stream respiration.
Paolo Peruzzo, Matteo Cappozzo, Nicola Durighetto, and Gianluca Botter
Biogeosciences, 20, 3261–3271, https://doi.org/10.5194/bg-20-3261-2023, https://doi.org/10.5194/bg-20-3261-2023, 2023
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Small cascades greatly enhance mountain stream gas emissions through the turbulent energy dissipation rate and air bubbles entrained into the water. We numerically studied the local contribution of these mechanisms driving gas transfer velocity used to quantify the outgassing. The gas evasion is primarily due to bubbles concentrated in irregular spots of limited area. Consequently, the gas exchange velocity is scale-dependent and unpredictable, posing concerns about its use in similar scenarios.
Philipp Maurischat, Michael Seidel, Thorsten Dittmar, and Georg Guggenberger
Biogeosciences, 20, 3011–3026, https://doi.org/10.5194/bg-20-3011-2023, https://doi.org/10.5194/bg-20-3011-2023, 2023
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Production and consumption of organic matter (OM) on the Tibetan Plateau are important for this sensitive ecosystem. We investigated the chemical composition of dissolved organic matter and the most mobile fraction of OM in glaciers, wetlands, and groundwater as well as in the rivers and a large terminal lake. Our data show that the sources differ in the molecular composition of OM, that the stream is influenced by agriculture, and that the lake strongly changes the inflowing organic matter.
James C. Stegen, Vanessa A. Garayburu-Caruso, Robert E. Danczak, Amy E. Goldman, Lupita Renteria, Joshua M. Torgeson, and Jacqueline Hager
Biogeosciences, 20, 2857–2867, https://doi.org/10.5194/bg-20-2857-2023, https://doi.org/10.5194/bg-20-2857-2023, 2023
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Chemical reactions in river sediments influence how clean the water is and how much greenhouse gas comes out of a river. Our study investigates why some sediments have higher rates of chemical reactions than others. We find that to achieve high rates, sediments need to have two things: only a few different kinds of molecules, but a lot of them. This result spans about 80 rivers such that it could be a general rule, helpful for predicting the future of rivers and our planet.
Andrew L. Robison, Nicola Deluigi, Camille Rolland, Nicolas Manetti, and Tom Battin
Biogeosciences, 20, 2301–2316, https://doi.org/10.5194/bg-20-2301-2023, https://doi.org/10.5194/bg-20-2301-2023, 2023
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Climate change is affecting mountain ecosystems intensely, including the loss of glaciers and the uphill migration of plants. How these changes will affect the streams draining these landscapes is unclear. We sampled streams across a gradient of glacier and vegetation cover in Switzerland and found glacier loss reduced the carbon dioxide sink from weathering, while vegetation cover increased dissolved organic carbon in the stream. These changes are important to consider for mountains globally.
Olga Ogneva, Gesine Mollenhauer, Bennet Juhls, Tina Sanders, Juri Palmtag, Matthias Fuchs, Hendrik Grotheer, Paul J. Mann, and Jens Strauss
Biogeosciences, 20, 1423–1441, https://doi.org/10.5194/bg-20-1423-2023, https://doi.org/10.5194/bg-20-1423-2023, 2023
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Arctic warming accelerates permafrost thaw and release of terrestrial organic matter (OM) via rivers to the Arctic Ocean. We compared particulate organic carbon (POC), total suspended matter, and C isotopes (δ13C and Δ14C of POC) in the Lena delta and Lena River along a ~1600 km transect. We show that the Lena delta, as an interface between the Lena River and the Arctic Ocean, plays a crucial role in determining the qualitative and quantitative composition of OM discharged into the Arctic Ocean.
Weitian Ding, Urumu Tsunogai, Fumiko Nakagawa, Takashi Sambuichi, Masaaki Chiwa, Tamao Kasahara, and Ken'ichi Shinozuka
Biogeosciences, 20, 753–766, https://doi.org/10.5194/bg-20-753-2023, https://doi.org/10.5194/bg-20-753-2023, 2023
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By monitoring the concentration and Δ17O of stream nitrate in three forested streams, the new nitrogen saturation index of forested catchments (Matm/Datm ratio) was estimated. We found that (1) the unprocessed atmospheric nitrate in our studied forested stream (FK1 catchment) was the highest ever reported in forested streams; (2) the Matm/Datm ratio can be used as a robust index for evaluating nitrogen saturation in forested catchments as the Matm/Datm ratio is independent of the precipitation.
Kirstin Dähnke, Tina Sanders, Yoana Voynova, and Scott D. Wankel
Biogeosciences, 19, 5879–5891, https://doi.org/10.5194/bg-19-5879-2022, https://doi.org/10.5194/bg-19-5879-2022, 2022
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Nitrogen is an important macronutrient that fuels algal production in rivers and coastal regions. We investigated the production and removal of nitrogen-bearing compounds in the freshwater section of the tidal Elbe Estuary and found that particles in the water column are key for the production and removal of water column nitrate. Using a stable isotope approach, we pinpointed regions where additional removal of nitrate or input from sediments plays an important role in estuarine biogeochemistry.
Tamara Michaelis, Anja Wunderlich, Ömer K. Coskun, William Orsi, Thomas Baumann, and Florian Einsiedl
Biogeosciences, 19, 4551–4569, https://doi.org/10.5194/bg-19-4551-2022, https://doi.org/10.5194/bg-19-4551-2022, 2022
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The greenhouse gas methane (CH4) drives climate change. Microorganisms in river sediments produce CH4 when degrading organic matter, but the contribution of rivers to atmospheric CH4 concentrations is uncertain. To better understand riverine CH4 cycling, we measured concentration profiles of CH4 and relevant reactants that might influence the CH4 cycle. We found substantial CH4 production, especially in fine, organic-rich sediments during summer and signs of microbial CH4 consumption.
James C. Stegen, Sarah J. Fansler, Malak M. Tfaily, Vanessa A. Garayburu-Caruso, Amy E. Goldman, Robert E. Danczak, Rosalie K. Chu, Lupita Renteria, Jerry Tagestad, and Jason Toyoda
Biogeosciences, 19, 3099–3110, https://doi.org/10.5194/bg-19-3099-2022, https://doi.org/10.5194/bg-19-3099-2022, 2022
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Rivers are vital to Earth, and in rivers, organic matter (OM) is an energy source for microbes that make greenhouse gas and remove contaminants. Predicting Earth’s future requires understanding how and why river OM is transformed. Our results help meet this need. We found that the processes influencing OM transformations diverge between river water and riverbed sediments. This can be used to build new models for predicting the future of rivers and, in turn, the Earth system.
Alexandra Klemme, Tim Rixen, Denise Müller-Dum, Moritz Müller, Justus Notholt, and Thorsten Warneke
Biogeosciences, 19, 2855–2880, https://doi.org/10.5194/bg-19-2855-2022, https://doi.org/10.5194/bg-19-2855-2022, 2022
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Tropical peat-draining rivers contain high amounts of carbon. Surprisingly, measured carbon dioxide (CO2) emissions from those rivers are comparatively moderate. We compiled data from 10 Southeast Asian rivers and found that CO2 production within these rivers is hampered by low water pH, providing a natural threshold for CO2 emissions. Furthermore, we find that enhanced carbonate input, e.g. caused by human activities, suspends this natural threshold and causes increased CO2 emissions.
Amy E. Pickard, Marcella Branagan, Mike F. Billett, Roxane Andersen, and Kerry J. Dinsmore
Biogeosciences, 19, 1321–1334, https://doi.org/10.5194/bg-19-1321-2022, https://doi.org/10.5194/bg-19-1321-2022, 2022
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Peatlands have been subject to a range of land management regimes over the past century. This has affected the amount of carbon that drains into surrounding streams and rivers. In our study, we measured carbon concentrations in streams draining from drained, non-drained, and restored areas of the Flow Country blanket bog in N Scotland. We found that drained peatland had higher concentrations and fluxes of carbon relative to non-drained areas. Restored peatland areas were highly variable.
Brynn O'Donnell and Erin R. Hotchkiss
Biogeosciences, 19, 1111–1134, https://doi.org/10.5194/bg-19-1111-2022, https://doi.org/10.5194/bg-19-1111-2022, 2022
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A stream is defined by flowing water, but higher flow from storms is also a frequent disturbance. This paper tests how higher flow changes stream metabolism (respiration and photosynthesis, R and P). P was less resistant to changes in flow compared to R, and P took longer to recover from storms than R (2.2 versus 0.6 d). Further work on metabolic responses to flow disturbance is critical given projected increases in storms and the influence of higher flows on ecosystem health and functioning.
Thibault Lambert, Pascal Perolo, Nicolas Escoffier, and Marie-Elodie Perga
Biogeosciences, 19, 187–200, https://doi.org/10.5194/bg-19-187-2022, https://doi.org/10.5194/bg-19-187-2022, 2022
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The bacterial mineralization of dissolved organic matter (DOM) in inland waters contributes to CO2 emissions to the atmosphere. Human activities affect DOM sources. However, the implications on DOM mineralization are poorly known. Combining sampling and incubations, we showed that higher bacterial respiration in agro-urban streams related to a labile pool from aquatic origin. Therefore, human activities may have a limited impact on the net carbon exchanges between inland waters and atmosphere.
Boyi Liu, Mingyang Tian, Kaimin Shih, Chun Ngai Chan, Xiankun Yang, and Lishan Ran
Biogeosciences, 18, 5231–5245, https://doi.org/10.5194/bg-18-5231-2021, https://doi.org/10.5194/bg-18-5231-2021, 2021
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Spatial and temporal patterns of pCO2 in the subtropical Dong River basin were mainly affected by C inputs and in-stream metabolism, both of which varied due to differential catchment settings, land cover, and hydrological conditions. CO2 fluxes in the wet season were 2-fold larger than in the dry season due to high pCO2 and turbulence caused by high flow velocity. The absence of high CO2 fluxes in small rivers could be associated with the depletion effect caused by abundant precipitation.
Sergey N. Vorobyev, Jan Karlsson, Yuri Y. Kolesnichenko, Mikhail A. Korets, and Oleg S. Pokrovsky
Biogeosciences, 18, 4919–4936, https://doi.org/10.5194/bg-18-4919-2021, https://doi.org/10.5194/bg-18-4919-2021, 2021
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In order to quantify riverine carbon (C) exchange with the atmosphere in permafrost regions, we report a first assessment of CO2 and CH4 concentration and fluxes of the largest permafrost-affected river, the Lena River, during the peak of spring flow. The results allowed identification of environmental factors controlling GHG concentrations and emission in the Lena River watershed; this new knowledge can be used for foreseeing future changes in C balance in permafrost-affected Arctic rivers.
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.
Matthias Pucher, Peter Flödl, Daniel Graeber, Klaus Felsenstein, Thomas Hein, and Gabriele Weigelhofer
Biogeosciences, 18, 3103–3122, https://doi.org/10.5194/bg-18-3103-2021, https://doi.org/10.5194/bg-18-3103-2021, 2021
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Dissolved organic matter is an important carbon source in aquatic ecosystems, yet the uptake processes are not totally understood. We found evidence for the release of degradation products, efficiency loss in the uptake with higher concentrations, stimulating effects, and quality-dependent influences from the benthic zone. To conduct this analysis, we included interactions in the equations of the nutrient spiralling concept and solve it with a Bayesian non-linear fitting algorithm.
Xin Wang, Ting Liu, Liang Wang, Zongguang Liu, Erxiong Zhu, Simin Wang, Yue Cai, Shanshan Zhu, and Xiaojuan Feng
Biogeosciences, 18, 3015–3028, https://doi.org/10.5194/bg-18-3015-2021, https://doi.org/10.5194/bg-18-3015-2021, 2021
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We show a comprehensive monitoring dataset on the discharge and carbon transport in a small alpine river on the Qinghai–Tibetan Plateau, where riverine carbon increased downstream in the pre-monsoon season due to an increasing contribution of organic matter derived from seasonal permafrost thaw while it fluctuated in the monsoon season induced by sporadic precipitation. These results indicate a high sensitivity of riverine carbon in alpine headwater catchments to local hydrological events.
Man Zhao, Liesbet Jacobs, Steven Bouillon, and Gerard Govers
Biogeosciences, 18, 1511–1523, https://doi.org/10.5194/bg-18-1511-2021, https://doi.org/10.5194/bg-18-1511-2021, 2021
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We investigate the relative importance of two individual factors (hydrodynamical disturbance and aquatic microbial community) that possibly control SOC decomposition rates in river systems. We found aquatic microbial organisms led to rapid SOC decomposition, while effect of mechanical disturbance is relative minor. We propose a simple conceptual model: hydrodynamic disturbance is only important when soil aggregates are strong enough to withstand the disruptive forces imposed by water immersions.
Lyla L. Taylor, Charles T. Driscoll, Peter M. Groffman, Greg H. Rau, Joel D. Blum, and David J. Beerling
Biogeosciences, 18, 169–188, https://doi.org/10.5194/bg-18-169-2021, https://doi.org/10.5194/bg-18-169-2021, 2021
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Enhanced rock weathering (ERW) is a carbon dioxide removal (CDR) strategy involving soil amendments with silicate rock dust. Over 15 years, a small silicate application led to net CDR of 8.5–11.5 t CO2/ha in an acid-rain-impacted New Hampshire forest. We accounted for the total carbon cost of treatment and compared effects with an adjacent, untreated forest. Our results suggest ERW can improve the greenhouse gas balance of similar forests in addition to mitigating acid rain effects.
Scott Zolkos, Suzanne E. Tank, Robert G. Striegl, Steven V. Kokelj, Justin Kokoszka, Cristian Estop-Aragonés, and David Olefeldt
Biogeosciences, 17, 5163–5182, https://doi.org/10.5194/bg-17-5163-2020, https://doi.org/10.5194/bg-17-5163-2020, 2020
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High-latitude warming thaws permafrost, exposing minerals to weathering and fluvial transport. We studied the effects of abrupt thaw and associated weathering on carbon cycling in western Canada. Permafrost collapse affected < 1 % of the landscape yet enabled carbonate weathering associated with CO2 degassing in headwaters and increased bicarbonate export across watershed scales. Weathering may become a driver of carbon cycling in ice- and mineral-rich permafrost terrain across the Arctic.
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
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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
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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
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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
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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.
Benedikt J. Werner, Andreas Musolff, Oliver J. Lechtenfeld, Gerrit H. de Rooij, Marieke R. Oosterwoud, and Jan H. Fleckenstein
Biogeosciences, 16, 4497–4516, https://doi.org/10.5194/bg-16-4497-2019, https://doi.org/10.5194/bg-16-4497-2019, 2019
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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.
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
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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 not accepted
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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.
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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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.
Cited articles
Arvola, L., Raike, A., Kortelainen, P., and Jarvinen, M.: The effect of
climate and landuse on TOC concentrations in Finnish rivers, Boreal.
Environ. Res., 9, 381–387, 2004.
Aslyng H. C.: Evaporation, evapotranspiration and water balance
investigations at Copenhagen 1955–64, Acta Agr. Scand., 15, 284–300,
1965.
Bain, C. G., Bonn, A., Stoneman, R., Chapman, S., Coupar, A., Evans, M.,
Gearey, B., Howat, M., Joosten, H., Keenleyside, C., Labadz, J., Lindsay,
R., Littlewood, N., Lunt, P., Miller, C. J., Moxey, A., Orr, H., Reed, M.,
Smith, P., Swales, V., Thompson, D. B. A., Thompson, P. S., Van de Noort, R.,
Wilson, J. D., and Worrall, F.: IUCN UK Commission of Inquiry on Peatlands,
IUCN UK Peatland Programme, Edinburgh, UK, 2011.
Beguería, S., Vicente-Serrano, S. M., Reig, F., and Latorre, B.:
Standardized precipitation evapotranspiration index (SPEI) revisited:
parameter fitting, evapotranspiration models, tools, datasets and drought
monitoring, Int. J. Climatol., 34, 3001–3023, 2014.
Blenckner, T., Adrian, R., Livingstone, D. M., Jennings, E., Weyhenmeyer,
G. A., Nic Aonghusa, C., George, D. G., Jankowski, T., Järvinen, M.,
Nõges, T., Straile, D., and Teubner, K.: Large-scale climatic signatures
in lakes across Europe, a meta-analysis, Glob. Change Biol., 13,
1313–1314, 2007.
Brereton, A. J., Danilov, S. A., and Scott, D.: Agrometerology of grass and
grasslands in middle latitudes, Technical note no. 197, World Meterological
Organization, Geneva, Switzerland, 36 pp., 1996.
Chatfield, C.: The analysis of time series: an introduction, Chapman and
Hall, London, UK, 286 pp., 1984.
Clair, T. A., Dennis, I. F., Vet, R., and Laudon, H.: Long-term trends in
catchment organic carbon and nitrogen exports from three acidified
catchments in Nova Scotia, Canada, Biogeochemistry, 87, 83–99, 2008.
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, 2005.
Clark, J. M., Lane, S. N., Chapman, P. J., and Adamson, J. K.: Export of
dissolved organic carbon from an upland peatland during storm events:
implications for flux estimates, J. Hydrol., 347, 438–447, 2007.
Clark, J. M., Gallego-Sala, A. V., Allott, T. E. H., Chapman, S. J.,
Farewell, T., Freeman, C., House, J. I., Orr, H. G., Prentice, I. C., and
Smith, P.: Assessing the vulnerability of blanket peat to climate change
using an ensemble of statistical bioclimatic envelope models, Clim. Res., 45,
131–150, 2010a.
Clark, J. M., Bottrell, S. H., Evans, C. D., Monteith, D. T., Bartlett, R.,
Rose, R., Newton, R. J., and Chapman, P. J.: The importance of the
relationship between scale and process in understanding long-term DOC
dynamics, Sci. Total. Environ., 408, 2768–2775, 2010b.
Cleveland, R. B., Cleveland, W. S., McRae, J. E., and Terpenning, I.: STL: A
Seasonal-Trend Decomposition Procedure Based on Loess, J. Off. Stat., 6,
3–73, 1990.
Coll, J., Gibb, S. W., and Harrison, J.: Modelling future climates in the
Scottish Highlands – an approach integrating local climatic variables and
regional climate model outputs, in: Mountains of northern Europe: conservation, management, people
and nature, edited by: Thompson, D. B. A., Price, M. F., and Galbraith,
C. A., TSO Scotland, Edinburgh, UK, 103–119, 2005.
Coll, J., Bourke, D., Skeffington, S. M., and Gormally, M.: Projected loss of
active blanket bogs in Ireland, Clim. Res., 59, 103–115, https://doi.org/10.3354/cr01202, 2014.
CORINE: Datasets downloaded from the Environmental Protection Agency, Ireland
(EPA) Geoportal website, available at: http://gis.epa.ie (last access:
25 May 2018), 2012.
Creed, I. F., McKnight, D. M., Pellerin, B. A., Green, M. B., Bergamaschi, B.
A., 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.
Cummins, T. and Farrell, E. P.: Biogeochemical impacts of clearfelling and
reforestation on blanket-peatland streams: Major ions and dissolved organic
carbon, Forest Ecol. Manag., 180, 557–570, 2003.
Daniels, S. M., Evans, M. G., Agnew, C. T., and Allott, T. E. H.: Sulphur
leaching from headwater catchments in an eroded peatland, South Pennines,
UK, Sci. Total. Environ., 407, 481–496, 2008.
Dawson, J. J. C., Billett, M. F., Neal, C., and Hill, S.: A comparison of
particulate, dissolved and gaseous carbon in two contrasting upland streams
in the UK, J. Hydrol., 257, 226–246, 2002.
de Eyto, E., Jennings, E., Ryder, E., Sparber, K., Dillane, M., Dalton, C.,
and Poole, R.: Response of a humic lake ecosystem to an extreme
precipitation event: physical, chemical, and biological implications, Inland
Waters, 6, 483–498, 2016.
Dillon, P. J. and Molot, L. A.: Long-term trends in catchment export and lake
retention of dissolved organic carbon, dissolved organic nitrogen, total iron
and total phosphorus: The Dorset, Ontario study, 1978–1998, J. Geophys.
Res-Biogeo., 110, G01002, https://doi.org/10.1029/2004JG000003, 2005.
Doyle, B., Dillane, M., de Eyto, E., Cooney, J., Hughes, P., Murphy, M.,
Nixon, P., Sweeney, D., Poole, R., Ryder, E., and Jennings, E.: Burrishoole
catchment water colour measurements, and associated environmental drivers:
Marine Institute, Ireland,
https://doi.org/10.20393/fa37ec81-7aec-4e9d-92f2-c79ff36716fb, 2018.
Dwyer, N.: The Status of Ireland's Climate,: EPA Report No. 26. Environmental
Protection Agency, Johnstown Castle, Ireland, available at:
http://www.epa.ie/pubs/reports/research/climate/CCRP26 - Status of
Ireland's Climate 2012.pdf (last access: 12 May 2018), 2012.
Erlandsson, M., Buffam, I., Fölster, J., Laudon, H., Temnerud, J.,
Weyhenmeyer, G., and Bishop, K.: Thirty-five years of synchrony in the
organic matter concentrations of Swedish rivers explained by variation in
flow and sulphate, Glob. Change Biol., 14, 1191–1198, 2008.
Evans, C. D., Monteith, D. T., and Cooper, D. M.: Long-term increases in
surface water dissolved organic carbon: observations, possible causes and
environmental impacts, Environ. Pollut., 137, 55–71, 2005.
Fenner, N. and Freeman, C.: Drought-induced carbon loss in peatlands, Nat.
Geosci., 4, 895–900, https://doi.org/10.1038/ngeo1323, 2011.
Findlay, S. J. M., Quinn, J. M., Hickey, C. W., Burrell, G., and Downes, M.:
Effects of landuse and riparian flowpath on delivery of dissolved organic
carbon to streams, Limnol. Oceanogr., 46, 345–355, 2001.
Folland, C. K., Knight, J., Linderholm, H. W., Fereday, D., Ineson, S., and
Hurrell, J. W.: The Summer North Atlantic Oscillation: Past, Present, and
Future, J. Climate, 22, 1082–1103, 2008.
Freeman, C., Evans, C. D., Monteith, D. T., Reynolds, B., and Fenner, N.:
Export of organic carbon from peat soils, Nature, 412, 785
https://doi.org/10.1038/35090628, 2001.
Gallego-Sala, A. and Prentice, I. C.: Blanket peat biome endangered by
climate change, Nat. Clim. Change, 3, 152–155, https://doi.org/10.1038/nclimate1672,
2013.
Gardiner, M. J. and Radford, T.: Soil associations of Ireland and their land
use potential, Soil Survey Bulletin, No. 36, Dublin, Ireland, 1980.
Grinsted, A., Moore, J. C., and Jevrejeva, S.: Application of the cross
wavelet transform and wavelet coherence to geophysical time series,
Nonlinear Processes in Geophysics, European Geosciences Union (EGU), 11, 561–566, 2004.
Hirsch, R. M.: An evaluation of some record reconstruction techniques, Water
Resour. Res., 15, 1781–1790, 1979.
Holden, N. M. and Connolly, J.: Estimating the carbon stock of a blanket
peat region using a peat depth inference model, Catena, 86, 75–85,
2011.
Hongve, D., Riise, G., and Kristiansen, J. F.: Increased colour and organic
acid concentrations in Norwegian forest lakes and drinking water – a result
of increased precipitation?, Aquat. Sci., 66, 231–238, 2004.
Hope, D., Billett, M. F., and Cresser, M. S.: Exports of organic carbon in two
river systems in NE Scotland, J. Hydrol., 193, 61–82, 1997a.
Hurrel, G., Ottersen, G., and Visbeck, M.: The North Atlantic
Oscillation; Climate Significance and Environmental Impacts, 134
Geophysical Monographs Series, American Geophysical Union, Washington, DC,
USA, 1–35, 2003.
Jennings, E., Allott, N., McGinnity, P., Poole, R., Quirke, W., Twomey, H.,
and George, G.: The North Atlantic Oscillation: Effects on freshwater
systems in Ireland, Biol. Environ., 100B, 149–157, 2000.
Jennings, E., Nic Aongusa, C., Allott, C., Naden, P., O'Hea, B., Pierson, D.,
and Schneiderman, E. Future climate change and water colour in Irish peatland
catchments: results from the CLIME project, Proceedings of the National
Hydrology Seminar 2006: Water Resources in Ireland and Climate Change,
Tullamore, Co Offaly, Ireland, 2006.
Jennings, E., Jones, S., Arvola, L., Staehr, P., Gaiser, A., Jones, I. D.,
Weathers, K., Weyhenmeyer, G. A., Chiu, C., and De Eyto, E.: Effects of
weather-related episodic events in lakes: an analysis based on
high-frequency data, Freshwater Biol., 57,
589–601, 2012.
Kiely, G.: Climate change in Ireland from precipitation and streamflow
observations, Adv. Water Resour., 23, 141–151, 1999.
Kiely, J., Diamond, S., Burke, P. J., and Collins, T.: Soil Map of West Mayo,
An Foras Talúntais, Dublin, Ireland, 1974.
Koehler, A. K., Murphy, K., Kiely, G., and Sottocornola, M.: Seasonal
variation of DOC concentration and annual loss of DOC from an Atlantic
blanket bog in South Western Ireland, Biogeochemistry, 95, 231–242,
2009.
Long, C. B., MacDermot, C. V., Morris, J. H., Sleeman, A. G., Tietzsch-Tyler,
D., Aldwell, C. R., Daly, D., Flegg, A. M., McArdle, P. M., and Warren, W. P.:
Geology of North Mayo, Geological Survey of Ireland, 56 pp., 1992.
Mäkiranta, P., Laiho, R., Fritze, H., Hytones, J., Laine, J., and
Minkkinen, K.: Indirect regulation of heterotrophic peat soil respiration by
water level via microbial community structure and temperature sensitivity,
Soil Biol. Biochem., 41, 695–703, 2009.
Marsh, T. J., Kirby, C., Muchan, K., Barker, L., Henderson, E., and
Hannaford, J.: The winter floods of 2015/2016 in the UK – a review, Centre
for Ecology and Hydrology, Wallingford, UK, 37 pp., 2016.
May, L. and Place, C.: A GIS-based model of soil erosion and transport,
Freshwater Forum, 23, 48–61, 2005.
Mitchell, G. and McDonald, A. T.: Discoloration of water by peat following
induced drought and rainfall simulation, Water Res., 26, 321–326, 1992.
Monteith, D. T., Stoddard, J. L., Evans, C. D., de Wit, H. A., Forsius, M.,
Hogasen, T., Wilander, A., Skjelkvale, B. L., Jeffries, D. S., Vuorenmaa, J.,
Keller, B., Ko-pacek, J., and Vesely, J.: Dissolved organic carbon trends
resulting from changes in atmospheric deposition chemistry, Nature, 450,
537–540, 2007.
Montgomery, D. C. and Peck, E. A.: Introduction to linear regression
analysis (2nd ed.), John Wiley and Sons, New York, USA, 1992.
Moore, T. R.: Dissolved organic carbon: sources, sinks, and fluxes and the
role in the soil carbon cycle, in: Soil processes and the carbon cycle,
edited by: Lal, R., CRC Press, Boca Raton, FL, USA, 281–292, 1998.
Moore, T. R. and Jackson, R. J.: Dynamics of dissolved organic carbon in
forested and disturbed catchments, Westland, New Zealand: 2. Larry River
Water Resour. Res., 25, 1331–1339, https://doi.org/10.1029/WR025i006p01331, 1989.
Naden, P. S., Allott, N., Arvola, L., Järvinen, M., Jennings, E., Moore,
K., Nic Aonghusa, C., Pierson, D., and Schneiderman, E.: Modelling the
Impacts of Climate Change on Dissolved Organic Carbon, in: The Impact of Climate Change on European Lakes, edited by: Glen, G., Springer, Dordrecht,
Heidelberg, London, New York, 221–253, 2010.
Neff, J. C. and Hooper, D. U.: Vegetation and climate controls on potential
CO2, DOC and DON production in northern latitude soils, Glob. Change
Biol., 8, 872–884, 2002.
NOAA.: National Oceanic and Atmospheric Administration, National weather
service, Climate Prediction Centre, available at:
http://www.cpc.ncep.noaa.gov/products/precip/CWlink/pna/nao.shtml, last access: 28 November 2017.
Nõges P., Kägu M., Nõges T. Role of climate and agricultural
practice in determining matter discharge into large, shallow Lake
Võrtsjärv, Estonia, in: Eutrophication of Shallow Lakes with Special
Reference to Lake Taihu, China, edited by: Qin, B., Liu, Z., and Havens, K.,
Developments in Hydrobiology, vol. 194, Springer, Dordrecht,
https://doi.org/10.1007/978-1-4020-6158-5_14, 2007.
Nolan, P.: Ensemble of Regional Climate Model Projections for Ireland,
Environmental Protection Agency, Johnstown Castle, Ireland, 2015.
O'Sullivan, A: Site synopsis, Owenduff/Nephin Complex, National Parks and
Wildlife Service, 51 St Stephens Green, Dublin 2, Ireland, 1993.
Parker, M. M.: Lough Furnace, County Mayo; physical and chemical studies of
an Irish saline lake, with reference to the biology of Neomysis integer, PhD
Thesis, Dublin University, Dublin, Ireland, 1977.
Preston, M. D., Eimers, 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.
Priestly, C. H. and Taylor, R. J.: On the Assessment of Surface Heat Flux and
Evaporation Using Large-Scale Parameters, Mon. Weather Rev., 100, 81–92,
https://doi.org/10.1175/1520-0493, 1972.
R Core Team.: R: A language and environment for statistical computing, R
Foundation for statistical Computing, Vienna, Austria, available at:
https://www.R-project.org/ (last access: 24 May 2018), 2017.
Renou-Wilson, F.: BOGLAND: Sustainable Management of Peatlands in Ireland.
Available at: Secure Archive for Environmental Research Data (SAFER) managed
by Environmental Protection Agency Ireland, available at:
http://erc.epa.ie/safer/resource?id=a07e0103-46da-102f-8c70-b53a025bc1b8
(last access: 18 April 2018), 2011.
Ryder, E.: Estimating carbon pools and processing in a humic Irish lake, PhD
thesis, Dundalk Institute of Technology, Dundalk, Ireland, 2015.
Ryder, E., de Eyto, E., Dillane, M., Poole, R., and Jennings, E.:
Identifying the role of environmental drivers in organic carbon export from
a forested peat catchment, Sci. Total Environ., 490, 28–36, 2014.
Schelker, J., Eklöf, K., Bishop, K., and Laudon, H.: Effects of forestry operations
on dissolved organic carbon concentrations and export in boreal first-order
streams, J. Geophys. Res., 117, G01011, https://doi.org/10.1029/2011JG001827, 2012.
Sheehy Skeffington, M. J. and O'Connell, C.: Peatlands of Ireland, Studies in
Irish Limnology, edited by: Giller, P., Societas Internationalis
Limnologiae (SIL), Dublin, Ireland, 39–66, 1998.
Sobek, S., Tranvik, L. J., Prairie, Y. T., Kortelainen, P., and Cole, J. J.:
Patterns and regulation of dissolved organic carbon: an analysis of 7500
widely distributed lakes, Limnol. Oceanogr., 52, 1208–1219, 2007.
Sweeney, J.: Regional weather and climates of the British Isles – Part 6:
Ireland, Weather, 69, 20–27, 2014.
Temnerud, J. and Bishop, K., Spatial variation of streamwater chemistry in
two C14 BGD Interactive comment Printer-friendly version Discussion paper
Swedish boreal catchments: Implications for environmental assessment,
Environ. Sci. Technol., 39, 1463–1469, https://doi.org/10.1021/es040045q, 2005.
Thurman, E. M.: Organic geochemistry of natural waters, Junk Publishers,
Dordrecht, the Netherlands, 497 pp., 1985.
Tipping, E., Marker, A. F. H., Butterwick, C., Collett, G. D., Cranwell, P. A.,
Ingram, J. K. G., Leach, D. V., Lishman, J. P., Pinder, A. C., Rigg, E., and
Simon, B. M.: Organic carbon in the Humber rivers, Sci. Total Environ.,
194–195, 345–355, 1997.
Venables, W. N. and Ripley, B. D.: Modern Applied Statistics with S, Fourth
Edition, Springer, the Netherlands, ISBN 0-387-95457-0, 2002.
Vicente-Serrano, S. M., Beguería, S., and López-Moreno, J. I.: A
Multiscalar Drought Index Sensitive to Global Warming: The Standardized
Precipitation Evapotranspiration Index, J. Climate, 23, 1696–1718,
https://doi.org/10.1175/2009JCLI2909.1, 2010.
Watts, C. D., Naden, P. S., Machell, J., and Banks, J.: Long term variation in
water colour from Yorkshire catchments, Sci. Total Environ., 278, 57–72,
2001.
Weir, G.: Sheep overgrazing in the Nephin Begs, MSc Thesis, Trinity
College Dublin, Dublin, Ireland, 1996.
Wieder, R. K. and Vitt, D. H.: Boreal peatland ecosystems, Springer, Berlin,
Germany, 2006.
Winterdahl, M., Erlandsson, M., Futter, M. N., Weyhenmeyer, G. A., and Bishop,
K.: Intra-annual variability of organic carbon concentrations in running
waters: Drivers along a climatic gradient, Global Biogeochem. Cy.,
28, 451–464, https://doi.org/10.1002/2013GB004770, 2014.
Winterdahl, M., Wallin, M. B., Karlsen, R. H., Laudon, H., Öquist, M.,
and Lyon, S. W.: Decoupling of carbon dioxide and dissolved organic carbon in
boreal headwater streams, J. Geophys. Res.-Biogeo., 121, 2630–2651,
https://doi.org/10.1002/2016JG003420, 2016.
Wood, S. N.: Generalized Additive Models: An Introduction R: Chapman and Hall/CRC,
Boca Raton, FL, USA, ISBN 1-58488-474-6, 2006.
Worrall, F. and Burt, T. P.: Flux of dissolved organic carbon from UK
rivers, Global Biogeochem. Cy., 21, GB1013, https://doi.org/10.1029/2006GB002709, 2007.
Worrall, F., Howden, N. J. K., Burt, T. P., and Bartlett, R.: Declines in the
dissolved organic carbon (DOC) concentration and flux from the UK, J.
Hydrol., 556, 775–789, https://doi.org/10.1016/j.jhydrol.2017.12.001, 2018.
Yallop, A. R. and Clutterbuck, B.: Land management as a factor controlling
dissolved organic carbon release from upland peat soils 1: Spatial variation
in DOC productivity, Sci. Total Environ., 407, 3803–3813, 2009.
Zhang, J., Hudson, J., Neal, R., Sereda, J., Clair, T., Turner, M.,
Jeffries, D., Dillon, P., Molot, L., Somers, K., and Hesslein, R.: Long-term
patterns of dissolved organic carbon in lakes across eastern Canada:
Evidence of a pronounced climate effect, Limnol. Oceanogr., 55, 30–42,
2010.
Zuur, A. F., Ieno, E. N., and Walker, N.: Mixed effects models and extensions
in ecology with R, Springer, New York, NY, USA, 2009.
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.
This study explores the drivers of variation in the water colour of rivers, and hence organic...
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