Articles | Volume 9, issue 12
https://doi.org/10.5194/bg-9-5303-2012
© Author(s) 2012. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Special issue:
https://doi.org/10.5194/bg-9-5303-2012
© Author(s) 2012. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Research article
| 
20 Dec 2012
Research article |
| 20 Dec 2012
Farm nitrogen balances in six European landscapes as an indicator for nitrogen losses and basis for improved management
T. Dalgaard
Aarhus University, Department of Agroecology, Denmark
J. F. Bienkowski
Institute for Agricultural and Forest Environment, Poland
A. Bleeker
Energy Research Centre of the Netherlands, The Netherlands
U. Dragosits
Centre for Ecology and Hydrology, Scotland, UK
J. L. Drouet
INRA, Environnement et Grandes Cultures, France
P. Durand
INRA, Soil, Agro-hydrosystems Spatialisation, France
A. Frumau
Energy Research Centre of the Netherlands, The Netherlands
N. J. Hutchings
Aarhus University, Department of Agroecology, Denmark
A. Kedziora
Institute for Agricultural and Forest Environment, Poland
V. Magliulo
Institute for Agriculture and Forest Systems in the Mediterranean, Italy
J. E. Olesen
Aarhus University, Department of Agroecology, Denmark
M. R. Theobald
Centre for Ecology and Hydrology, Scotland, UK
Technical University of Madrid, Spain
O. Maury
INRA, Environnement et Grandes Cultures, France
N. Akkal
INRA, Soil, Agro-hydrosystems Spatialisation, France
P. Cellier
Centre for Ecology and Hydrology, Scotland, UK
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H. J. M. van Grinsven, H. F. M. ten Berge, T. Dalgaard, B. Fraters, P. Durand, A. Hart, G. Hofman, B. H. Jacobsen, S. T. J. Lalor, J. P. Lesschen, B. Osterburg, K. G. Richards, A.-K. Techen, F. Vertès, J. Webb, and W. J. Willems
Biogeosciences, 9, 5143–5160, https://doi.org/10.5194/bg-9-5143-2012, https://doi.org/10.5194/bg-9-5143-2012, 2012
Samuel James Tomlinson, Edward James Carnell, Clare Pearson, Mark A. Sutton, Niveta Jain, and Ulrike Dragosits
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The release of ammonia into the air poses a serious risk to ecosystems and human health and so it is important to characterise where this polluting gas originates from. It is known that agriculture is an important source of ammonia (e.g. using fertilisers) and that South Asia is a global hotspot of this pollutant. It is, therefore, important to refine methods used to estimate how much ammonia is released in South Asia to be then used in advanced chemistry models for air quality assessments.
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Nitrogen (N) may impact the environment in many ways, and estimation of its deposition to the terrestrial surface is of interest. N deposition data have not been generated at a high resolution (1 km × 1 km) over a long time series in the UK before now. This study concludes that N deposition has reduced by ~ 40 % from 1990. The impact of these results allows analysis of environmental impacts at a high spatial and temporal resolution, using a consistent methodology and consistent set of input data.
Y. Sim Tang, Chris R. Flechard, Ulrich Dämmgen, Sonja Vidic, Vesna Djuricic, Marta Mitosinkova, Hilde T. Uggerud, Maria J. Sanz, Ivan Simmons, Ulrike Dragosits, Eiko Nemitz, Marsailidh Twigg, Netty van Dijk, Yannick Fauvel, Francisco Sanz, Martin Ferm, Cinzia Perrino, Maria Catrambone, David Leaver, Christine F. Braban, J. Neil Cape, Mathew R. Heal, and Mark A. Sutton
Atmos. Chem. Phys., 21, 875–914, https://doi.org/10.5194/acp-21-875-2021, https://doi.org/10.5194/acp-21-875-2021, 2021
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The DELTA® approach provided speciated, monthly data on reactive gases (NH3, HNO3, SO2, HCl) and aerosols (NH4+, NO3−, SO42−, Cl−, Na+) across Europe (2006–2010). Differences in spatial and temporal concentrations and patterns between geographic regions and four ecosystem types were captured. NH3 and NH4NO3 were dominant components, highlighting their growing relative importance in ecosystem impacts (acidification, eutrophication) and human health effects (NH3 as a precursor to PM2.5) in Europe.
Xiaolu Tang, Nuno Carvalhais, Catarina Moura, Bernhard Ahrens, Sujan Koirala, Shaohui Fan, Fengying Guan, Wenjie Zhang, Sicong Gao, Vincenzo Magliulo, Pauline Buysse, Shibin Liu, Guo Chen, Wunian Yang, Zhen Yu, Jingjing Liang, Leilei Shi, Shenyan Pu, and Markus Reichstein
Biogeosciences Discuss., https://doi.org/10.5194/bg-2019-37, https://doi.org/10.5194/bg-2019-37, 2019
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Vegetation CUE is a key measure of carbon transfer from the atmosphere to terrestrial biomass. This study modelled global CUE with published observations using random forest. CUE varied with ecosystem types and spatially decreased with latitude, challenging the previous conclusion that CUE was independent of environmental controls. Our results emphasize a better understanding of environmental controls on CUE to reduce uncertainties in prognostic land-process model simulations.
Jannis von Buttlar, Jakob Zscheischler, Anja Rammig, Sebastian Sippel, Markus Reichstein, Alexander Knohl, Martin Jung, Olaf Menzer, M. Altaf Arain, Nina Buchmann, Alessandro Cescatti, Damiano Gianelle, Gerard Kiely, Beverly E. Law, Vincenzo Magliulo, Hank Margolis, Harry McCaughey, Lutz Merbold, Mirco Migliavacca, Leonardo Montagnani, Walter Oechel, Marian Pavelka, Matthias Peichl, Serge Rambal, Antonio Raschi, Russell L. Scott, Francesco P. Vaccari, Eva van Gorsel, Andrej Varlagin, Georg Wohlfahrt, and Miguel D. Mahecha
Biogeosciences, 15, 1293–1318, https://doi.org/10.5194/bg-15-1293-2018, https://doi.org/10.5194/bg-15-1293-2018, 2018
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Our work systematically quantifies extreme heat and drought event impacts on gross primary productivity (GPP) and ecosystem respiration globally across a wide range of ecosystems. We show that heat extremes typically increased mainly respiration whereas drought decreased both fluxes. Combined heat and drought extremes had opposing effects offsetting each other for respiration, but there were also strong reductions in GPP and hence the strongest reductions in the ecosystems carbon sink capacity.
Zhiyuan Zhang, Renduo Zhang, Yang Zhou, Alessandro Cescatti, Georg Wohlfahrt, Minmin Sun, Juan Zhu, Vincenzo Magliulo, Feng Tao, and Guanhong Chen
Biogeosciences Discuss., https://doi.org/10.5194/bg-2017-345, https://doi.org/10.5194/bg-2017-345, 2017
Manuscript not accepted for further review
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This study highlight the key role of temperature as main controlling factor of the maximum respiration rates in most terrestrial ecosystems, while other driving forces reduce the maximum respiration rates and temperature sensitivity of the respiratory process. These findings are particularly relevant under the current scenario of rapid global warming, given that the potential climate-induced changes in ecosystem respiration may lead to substantial anomalies in terrestrial carbon budget.
Loise Wandera, Kaniska Mallick, Gerard Kiely, Olivier Roupsard, Matthias Peichl, and Vincenzo Magliulo
Hydrol. Earth Syst. Sci., 21, 197–215, https://doi.org/10.5194/hess-21-197-2017, https://doi.org/10.5194/hess-21-197-2017, 2017
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Upscaling instantaneous to daily evapotranspiration (ETi–ETd) is one of the central challenges in regional vegetation water-use mapping using polar orbiting satellites. Here we developed a robust ETi upscaling for global studies using the ratio between daily and instantaneous global radiation (RSd/RSi). Using data from 126 FLUXNET tower sites, this study demonstrated the RSd/RSi ratio to be the most robust factor explaining ETd/ETi variability across variable sky conditions and multiple biomes.
X. Wu, N. Vuichard, P. Ciais, N. Viovy, N. de Noblet-Ducoudré, X. Wang, V. Magliulo, M. Wattenbach, L. Vitale, P. Di Tommasi, E. J. Moors, W. Jans, J. Elbers, E. Ceschia, T. Tallec, C. Bernhofer, T. Grünwald, C. Moureaux, T. Manise, A. Ligne, P. Cellier, B. Loubet, E. Larmanou, and D. Ripoche
Geosci. Model Dev., 9, 857–873, https://doi.org/10.5194/gmd-9-857-2016, https://doi.org/10.5194/gmd-9-857-2016, 2016
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The response of crops to changing climate and atmospheric CO2 could have large effects on food production, terrestrial carbon, water, energy fluxes and the climate feedbacks. We developed a new process-oriented terrestrial biogeochemical model named ORCHIDEE-CROP (v0), which integrates a generic crop phenology and harvest module into the land surface model ORCHIDEE. Our model has good ability to capture the spatial gradients of crop phenology, carbon and energy-related variables across Europe.
M. Lothon, F. Lohou, D. Pino, F. Couvreux, E. R. Pardyjak, J. Reuder, J. Vilà-Guerau de Arellano, P Durand, O. Hartogensis, D. Legain, P. Augustin, B. Gioli, D. H. Lenschow, I. Faloona, C. Yagüe, D. C. Alexander, W. M. Angevine, E Bargain, J. Barrié, E. Bazile, Y. Bezombes, E. Blay-Carreras, A. van de Boer, J. L. Boichard, A. Bourdon, A. Butet, B. Campistron, O. de Coster, J. Cuxart, A. Dabas, C. Darbieu, K. Deboudt, H. Delbarre, S. Derrien, P. Flament, M. Fourmentin, A. Garai, F. Gibert, A. Graf, J. Groebner, F. Guichard, M. A. Jiménez, M. Jonassen, A. van den Kroonenberg, V. Magliulo, S. Martin, D. Martinez, L. Mastrorillo, A. F. Moene, F. Molinos, E. Moulin, H. P. Pietersen, B. Piguet, E. Pique, C. Román-Cascón, C. Rufin-Soler, F. Saïd, M. Sastre-Marugán, Y. Seity, G. J. Steeneveld, P. Toscano, O. Traullé, D. Tzanos, S. Wacker, N. Wildmann, and A. Zaldei
Atmos. Chem. Phys., 14, 10931–10960, https://doi.org/10.5194/acp-14-10931-2014, https://doi.org/10.5194/acp-14-10931-2014, 2014
E. Boegh, R. Houborg, J. Bienkowski, C. F. Braban, T. Dalgaard, N. van Dijk, U. Dragosits, E. Holmes, V. Magliulo, K. Schelde, P. Di Tommasi, L. Vitale, M. R. Theobald, P. Cellier, and M. A. Sutton
Biogeosciences, 10, 6279–6307, https://doi.org/10.5194/bg-10-6279-2013, https://doi.org/10.5194/bg-10-6279-2013, 2013
J. Schmale, J. Schneider, E. Nemitz, Y. S. Tang, U. Dragosits, T. D. Blackall, P. N. Trathan, G. J. Phillips, M. Sutton, and C. F. Braban
Atmos. Chem. Phys., 13, 8669–8694, https://doi.org/10.5194/acp-13-8669-2013, https://doi.org/10.5194/acp-13-8669-2013, 2013
M. H. Jeuffroy, E. Baranger, B. Carrouée, E. de Chezelles, M. Gosme, C. Hénault, A. Schneider, and P. Cellier
Biogeosciences, 10, 1787–1797, https://doi.org/10.5194/bg-10-1787-2013, https://doi.org/10.5194/bg-10-1787-2013, 2013
L. Wang, A. Ibrom, J. F. J. Korhonen, K. F. Arnoud Frumau, J. Wu, M. Pihlatie, and J. K. Schjoerring
Biogeosciences, 10, 999–1011, https://doi.org/10.5194/bg-10-999-2013, https://doi.org/10.5194/bg-10-999-2013, 2013
E. Vogt, C. F. Braban, U. Dragosits, M. R. Theobald, M. F. Billett, A. J. Dore, Y. S. Tang, N. van Dijk, R. M. Rees, C. McDonald, S. Murray, U. M. Skiba, and M. A. Sutton
Biogeosciences, 10, 119–133, https://doi.org/10.5194/bg-10-119-2013, https://doi.org/10.5194/bg-10-119-2013, 2013
H. J. M. van Grinsven, H. F. M. ten Berge, T. Dalgaard, B. Fraters, P. Durand, A. Hart, G. Hofman, B. H. Jacobsen, S. T. J. Lalor, J. P. Lesschen, B. Osterburg, K. G. Richards, A.-K. Techen, F. Vertès, J. Webb, and W. J. Willems
Biogeosciences, 9, 5143–5160, https://doi.org/10.5194/bg-9-5143-2012, https://doi.org/10.5194/bg-9-5143-2012, 2012
O. Hertel, C. A. Skjøth, S. Reis, A. Bleeker, R. M. Harrison, J. N. Cape, D. Fowler, U. Skiba, D. Simpson, T. Jickells, M. Kulmala, S. Gyldenkærne, L. L. Sørensen, J. W. Erisman, and M. A. Sutton
Biogeosciences, 9, 4921–4954, https://doi.org/10.5194/bg-9-4921-2012, https://doi.org/10.5194/bg-9-4921-2012, 2012
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We find West African SIF to increase during the dry season and peak prior to precipitation, similar to the Amazon. In Central Africa, we find a continental-scale bimodal seasonality in SIF, the minimum of which is synchronous with precipitation, but its maximum is likely less related to environmental drivers. We also find important differences in the seasonality of SIF and VIs, which indicates that VI-based estimates of photosynthesis could be inaccurate as they have been shown to be the Amazon.
Prajwal Khanal, Anne J. Hoek Van Dijke, Timo Schaffhauser, Wantong Li, Sinikka J. Paulus, Chunhui Zhan, and René Orth
Biogeosciences, 21, 1533–1547, https://doi.org/10.5194/bg-21-1533-2024, https://doi.org/10.5194/bg-21-1533-2024, 2024
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Anna-Maria Virkkala, Pekka Niittynen, Julia Kemppinen, Maija E. Marushchak, Carolina Voigt, Geert Hensgens, Johanna Kerttula, Konsta Happonen, Vilna Tyystjärvi, Christina Biasi, Jenni Hultman, Janne Rinne, and Miska Luoto
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Arctic greenhouse gas (GHG) fluxes of CO2, CH4, and N2O are important for climate feedbacks. We combined extensive in situ measurements and remote sensing data to develop machine-learning models to predict GHG fluxes at a 2 m resolution across a tundra landscape. The analysis revealed that the system was a net GHG sink and showed widespread CH4 uptake in upland vegetation types, almost surpassing the high wetland CH4 emissions at the landscape scale.
Thomas Baer, Gerhard Furrer, Stephan Zimmermann, and Patrick Schleppi
Biogeosciences, 20, 4577–4589, https://doi.org/10.5194/bg-20-4577-2023, https://doi.org/10.5194/bg-20-4577-2023, 2023
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Nitrogen (N) deposition to forest ecosystems is a matter of concern because it affects their nutrient status and makes their soil acidic. We observed an ongoing acidification in a montane forest in central Switzerland even if the subsoil of this site contains carbonates and is thus well buffered. We experimentally added N to simulate a higher pollution, and this increased the acidification. After 25 years of study, however, we can see the first signs of recovery, also under higher N deposition.
Huiying Xu, Han Wang, Iain Colin Prentice, and Sandy P. Harrison
Biogeosciences, 20, 4511–4525, https://doi.org/10.5194/bg-20-4511-2023, https://doi.org/10.5194/bg-20-4511-2023, 2023
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Leaf carbon (C) and nitrogen (N) are crucial elements in leaf construction and physiological processes. This study reconciled the roles of phylogeny, species identity, and climate in stoichiometric traits at individual and community levels. The variations in community-level leaf N and C : N ratio were captured by optimality-based models using climate data. Our results provide an approach to improve the representation of leaf stoichiometry in vegetation models to better couple N with C cycling.
István Dunkl, Nicole Lovenduski, Alessio Collalti, Vivek K. Arora, Tatiana Ilyina, and Victor Brovkin
Biogeosciences, 20, 3523–3538, https://doi.org/10.5194/bg-20-3523-2023, https://doi.org/10.5194/bg-20-3523-2023, 2023
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Despite differences in the reproduction of gross primary productivity (GPP) by Earth system models (ESMs), ESMs have similar predictability of the global carbon cycle. We found that, although GPP variability originates from different regions and is driven by different climatic variables across the ESMs, the ESMs rely on the same mechanisms to predict their own GPP. This shows that the predictability of the carbon cycle is limited by our understanding of variability rather than predictability.
David T. Milodowski, T. Luke Smallman, and Mathew Williams
Biogeosciences, 20, 3301–3327, https://doi.org/10.5194/bg-20-3301-2023, https://doi.org/10.5194/bg-20-3301-2023, 2023
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Model–data fusion (MDF) allows us to combine ecosystem models with Earth observation data. Fragmented landscapes, with a mosaic of contrasting ecosystems, pose a challenge for MDF. We develop a novel MDF framework to estimate the carbon balance of fragmented landscapes and show the importance of accounting for ecosystem heterogeneity to prevent scale-dependent bias in estimated carbon fluxes, disturbance fluxes in particular, and to improve ecological fidelity of the calibrated models.
Keri L. Bowering, Kate A. Edwards, and Susan E. Ziegler
Biogeosciences, 20, 2189–2206, https://doi.org/10.5194/bg-20-2189-2023, https://doi.org/10.5194/bg-20-2189-2023, 2023
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Dissolved organic matter (DOM) mobilized from surface soils is a source of carbon (C) for deeper mineral horizons but also a mechanism of C loss. Composition of DOM mobilized in boreal forests varied more by season than as a result of forest harvesting. Results suggest reduced snowmelt and increased fall precipitation enhance DOM properties promoting mineral soil C stores. These findings, coupled with hydrology, can inform on soil C fate and boreal forest C balance in response to climate change.
Bharat Sharma, Jitendra Kumar, Auroop R. Ganguly, and Forrest M. Hoffman
Biogeosciences, 20, 1829–1841, https://doi.org/10.5194/bg-20-1829-2023, https://doi.org/10.5194/bg-20-1829-2023, 2023
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Rising atmospheric carbon dioxide increases vegetation growth and causes more heatwaves and droughts. The impact of such climate extremes is detrimental to terrestrial carbon uptake capacity. We found that due to overall climate warming, about 88 % of the world's regions towards the end of 2100 will show anomalous losses in net biospheric productivity (NBP) rather than gains. More than 50 % of all negative NBP extremes were driven by the compound effect of dry, hot, and fire conditions.
Britta Greenshields, Barbara von der Lühe, Felix Schwarz, Harold J. Hughes, Aiyen Tjoa, Martyna Kotowska, Fabian Brambach, and Daniela Sauer
Biogeosciences, 20, 1259–1276, https://doi.org/10.5194/bg-20-1259-2023, https://doi.org/10.5194/bg-20-1259-2023, 2023
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Silicon (Si) can have multiple beneficial effects on crops such as oil palms. In this study, we quantified Si concentrations in various parts of an oil palm (leaflets, rachises, fruit-bunch parts) to derive Si storage estimates for the total above-ground biomass of an oil palm and 1 ha of an oil-palm plantation. We proposed a Si balance by identifying Si return (via palm fronds) and losses (via harvest) in the system and recommend management measures that enhance Si cycling.
Luisa Schmidt, Matthias Forkel, Ruxandra-Maria Zotta, Samuel Scherrer, Wouter A. Dorigo, Alexander Kuhn-Régnier, Robin van der Schalie, and Marta Yebra
Biogeosciences, 20, 1027–1046, https://doi.org/10.5194/bg-20-1027-2023, https://doi.org/10.5194/bg-20-1027-2023, 2023
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Vegetation attenuates natural microwave emissions from the land surface. The strength of this attenuation is quantified as the vegetation optical depth (VOD) parameter and is influenced by the vegetation mass, structure, water content, and observation wavelength. Here we model the VOD signal as a multi-variate function of several descriptive vegetation variables. The results help in understanding the effects of ecosystem properties on VOD.
Nagham Tabaja, David Amouroux, Lamis Chalak, François Fourel, Emmanuel Tessier, Ihab Jomaa, Milad El Riachy, and Ilham Bentaleb
Biogeosciences, 20, 619–633, https://doi.org/10.5194/bg-20-619-2023, https://doi.org/10.5194/bg-20-619-2023, 2023
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This study investigates the seasonality of the mercury (Hg) concentration of olive trees. Hg concentrations of foliage, stems, soil surface, and litter were analyzed on a monthly basis in ancient olive trees growing in two groves in Lebanon. Our study draws an adequate baseline for the eastern Mediterranean and for the region with similar climatic inventories on Hg vegetation uptake in addition to being a baseline for new studies on olive trees in the Mediterranean.
Allison N. Myers-Pigg, Karl Kaiser, Ronald Benner, and Susan E. Ziegler
Biogeosciences, 20, 489–503, https://doi.org/10.5194/bg-20-489-2023, https://doi.org/10.5194/bg-20-489-2023, 2023
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Boreal forests, historically a global sink for atmospheric CO2, store carbon in vast soil reservoirs. To predict how such stores will respond to climate warming we need to understand climate–ecosystem feedbacks. We find boreal forest soil carbon stores are maintained through enhanced nitrogen cycling with climate warming, providing direct evidence for a key feedback. Further application of the approach demonstrated here will improve our understanding of the limits of climate–ecosystem feedbacks.
Matthew P. Dannenberg, Mallory L. Barnes, William K. Smith, Miriam R. Johnston, Susan K. Meerdink, Xian Wang, Russell L. Scott, and Joel A. Biederman
Biogeosciences, 20, 383–404, https://doi.org/10.5194/bg-20-383-2023, https://doi.org/10.5194/bg-20-383-2023, 2023
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Earth's drylands provide ecosystem services to many people and will likely be strongly affected by climate change, but it is quite challenging to monitor the productivity and water use of dryland plants with satellites. We developed and tested an approach for estimating dryland vegetation activity using machine learning to combine information from multiple satellite sensors. Our approach excelled at estimating photosynthesis and water use largely due to the inclusion of satellite soil moisture.
Mark Pickering, Alessandro Cescatti, and Gregory Duveiller
Biogeosciences, 19, 4833–4864, https://doi.org/10.5194/bg-19-4833-2022, https://doi.org/10.5194/bg-19-4833-2022, 2022
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This study explores two of the most recent products in carbon productivity estimation, FLUXCOM gross primary productivity (GPP), calculated by upscaling local measurements of CO2 exchange, and remotely sensed sun-induced chlorophyll a fluorescence (SIF). High-resolution SIF data are valuable in demonstrating similarity in the SIF–GPP relationship between vegetation covers, provide an independent probe of the FLUXCOM GPP model and demonstrate the response of SIF to meteorological fluctuations.
Sophia Walther, Simon Besnard, Jacob Allen Nelson, Tarek Sebastian El-Madany, Mirco Migliavacca, Ulrich Weber, Nuno Carvalhais, Sofia Lorena Ermida, Christian Brümmer, Frederik Schrader, Anatoly Stanislavovich Prokushkin, Alexey Vasilevich Panov, and Martin Jung
Biogeosciences, 19, 2805–2840, https://doi.org/10.5194/bg-19-2805-2022, https://doi.org/10.5194/bg-19-2805-2022, 2022
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Satellite observations help interpret station measurements of local carbon, water, and energy exchange between the land surface and the atmosphere and are indispensable for simulations of the same in land surface models and their evaluation. We propose generalisable and efficient approaches to systematically ensure high quality and to estimate values in data gaps. We apply them to satellite data of surface reflectance and temperature with different resolutions at the stations.
Elisabeth Mauclet, Yannick Agnan, Catherine Hirst, Arthur Monhonval, Benoît Pereira, Aubry Vandeuren, Maëlle Villani, Justin Ledman, Meghan Taylor, Briana L. Jasinski, Edward A. G. Schuur, and Sophie Opfergelt
Biogeosciences, 19, 2333–2351, https://doi.org/10.5194/bg-19-2333-2022, https://doi.org/10.5194/bg-19-2333-2022, 2022
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Arctic warming and permafrost degradation largely affect tundra vegetation. Wetter lowlands show an increase in sedges, whereas drier uplands favor shrub expansion. Here, we demonstrate that the difference in the foliar elemental composition of typical tundra vegetation species controls the change in local foliar elemental stock and potential mineral element cycling through litter production upon a shift in tundra vegetation.
Tiexi Chen, Renjie Guo, Qingyun Yan, Xin Chen, Shengjie Zhou, Chuanzhuang Liang, Xueqiong Wei, and Han Dolman
Biogeosciences, 19, 1515–1525, https://doi.org/10.5194/bg-19-1515-2022, https://doi.org/10.5194/bg-19-1515-2022, 2022
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Currently people are very concerned about vegetation changes and their driving factors, including natural and anthropogenic drivers. In this study, a general browning trend is found in Syria during 2001–2018, indicated by the vegetation index. We found that land management caused by social unrest is the main cause of this browning phenomenon. The mechanism initially reported here highlights the importance of land management impacts at the regional scale.
Rahayu Adzhar, Douglas I. Kelley, Ning Dong, Charles George, Mireia Torello Raventos, Elmar Veenendaal, Ted R. Feldpausch, Oliver L. Phillips, Simon L. Lewis, Bonaventure Sonké, Herman Taedoumg, Beatriz Schwantes Marimon, Tomas Domingues, Luzmila Arroyo, Gloria Djagbletey, Gustavo Saiz, and France Gerard
Biogeosciences, 19, 1377–1394, https://doi.org/10.5194/bg-19-1377-2022, https://doi.org/10.5194/bg-19-1377-2022, 2022
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The MODIS Vegetation Continuous Fields (VCF) product underestimates tree cover compared to field data and could be underestimating tree cover significantly across the tropics. VCF is used to represent land cover or validate model performance in many land surface and global vegetation models and to train finer-scaled Earth observation products. Because underestimation in VCF may render it unsuitable for training data and bias model predictions, it should be calibrated before use in the tropics.
Lina Teckentrup, Martin G. De Kauwe, Andrew J. Pitman, Daniel S. Goll, Vanessa Haverd, Atul K. Jain, Emilie Joetzjer, Etsushi Kato, Sebastian Lienert, Danica Lombardozzi, Patrick C. McGuire, Joe R. Melton, Julia E. M. S. Nabel, Julia Pongratz, Stephen Sitch, Anthony P. Walker, and Sönke Zaehle
Biogeosciences, 18, 5639–5668, https://doi.org/10.5194/bg-18-5639-2021, https://doi.org/10.5194/bg-18-5639-2021, 2021
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The Australian continent is included in global assessments of the carbon cycle such as the global carbon budget, yet the performance of dynamic global vegetation models (DGVMs) over Australia has rarely been evaluated. We assessed simulations by an ensemble of dynamic global vegetation models over Australia and highlighted a number of key areas that lead to model divergence on both short (inter-annual) and long (decadal) timescales.
Juhwan Lee, Raphael A. Viscarra Rossel, Mingxi Zhang, Zhongkui Luo, and Ying-Ping Wang
Biogeosciences, 18, 5185–5202, https://doi.org/10.5194/bg-18-5185-2021, https://doi.org/10.5194/bg-18-5185-2021, 2021
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We performed Roth C simulations across Australia and assessed the response of soil carbon to changing inputs and future climate change using a consistent modelling framework. Site-specific initialisation of the C pools with measurements of the C fractions is essential for accurate simulations of soil organic C stocks and composition at a large scale. With further warming, Australian soils will become more vulnerable to C loss: natural environments > native grazing > cropping > modified grazing.
Anam M. Khan, Paul C. Stoy, James T. Douglas, Martha Anderson, George Diak, Jason A. Otkin, Christopher Hain, Elizabeth M. Rehbein, and Joel McCorkel
Biogeosciences, 18, 4117–4141, https://doi.org/10.5194/bg-18-4117-2021, https://doi.org/10.5194/bg-18-4117-2021, 2021
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Remote sensing has played an important role in the study of land surface processes. Geostationary satellites, such as the GOES-R series, can observe the Earth every 5–15 min, providing us with more observations than widely used polar-orbiting satellites. Here, we outline current efforts utilizing geostationary observations in environmental science and look towards the future of GOES observations in the carbon cycle, ecosystem disturbance, and other areas of application in environmental science.
Lydia Stolpmann, Caroline Coch, Anne Morgenstern, Julia Boike, Michael Fritz, Ulrike Herzschuh, Kathleen Stoof-Leichsenring, Yury Dvornikov, Birgit Heim, Josefine Lenz, Amy Larsen, Katey Walter Anthony, Benjamin Jones, Karen Frey, and Guido Grosse
Biogeosciences, 18, 3917–3936, https://doi.org/10.5194/bg-18-3917-2021, https://doi.org/10.5194/bg-18-3917-2021, 2021
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Our new database summarizes DOC concentrations of 2167 water samples from 1833 lakes in permafrost regions across the Arctic to provide insights into linkages between DOC and environment. We found increasing lake DOC concentration with decreasing permafrost extent and higher DOC concentrations in boreal permafrost sites compared to tundra sites. Our study shows that DOC concentration depends on the environmental properties of a lake, especially permafrost extent, ecoregion, and vegetation.
Gustaf Granath, Christopher D. Evans, Joachim Strengbom, Jens Fölster, Achim Grelle, Johan Strömqvist, and Stephan J. Köhler
Biogeosciences, 18, 3243–3261, https://doi.org/10.5194/bg-18-3243-2021, https://doi.org/10.5194/bg-18-3243-2021, 2021
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We measured element losses and impacts on water quality following a wildfire in Sweden. We observed the largest carbon and nitrogen losses during the fire and a strong pulse of elements 1–3 months after the fire that showed a fast (weeks) and a slow (months) release from the catchments. Total carbon export through water did not increase post-fire. Overall, we observed a rapid recovery of the biogeochemical cycling of elements within 3 years but still an annual net release of carbon dioxide.
Lina Teckentrup, Martin G. De Kauwe, Andrew J. Pitman, and Benjamin Smith
Biogeosciences, 18, 2181–2203, https://doi.org/10.5194/bg-18-2181-2021, https://doi.org/10.5194/bg-18-2181-2021, 2021
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The El Niño–Southern Oscillation (ENSO) describes changes in the sea surface temperature patterns of the Pacific Ocean. This influences the global weather, impacting vegetation on land. There are two types of El Niño: central Pacific (CP) and eastern Pacific (EP). In this study, we explored the long-term impacts on the carbon balance on land linked to the two El Niño types. Using a dynamic vegetation model, we simulated what would happen if only either CP or EP El Niño events had occurred.
Matthias Volk, Matthias Suter, Anne-Lena Wahl, and Seraina Bassin
Biogeosciences, 18, 2075–2090, https://doi.org/10.5194/bg-18-2075-2021, https://doi.org/10.5194/bg-18-2075-2021, 2021
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Grassland ecosystem services like forage production and greenhouse gas storage in the soil depend on plant growth.
In an experiment in the mountains with warming treatments, we found that despite dwindling soil water content, the grassland growth increased with up to +1.3 °C warming (annual mean) compared to present temperatures. Even at +2.4 °C the growth was still larger than at the reference site.
This suggests that plant growth will increase due to global warming in the near future.
Bernice C. Hwang and Daniel B. Metcalfe
Biogeosciences, 18, 1259–1268, https://doi.org/10.5194/bg-18-1259-2021, https://doi.org/10.5194/bg-18-1259-2021, 2021
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Despite growing recognition of herbivores as important ecosystem engineers, many major gaps remain in our understanding of how silicon and herbivory interact to shape biogeochemical processes. We highlight the need for more research particularly in natural settings as well as on the potential effects of herbivory on terrestrial silicon cycling to understand potentially critical animal–plant–soil feedbacks.
Ali Asaadi and Vivek K. Arora
Biogeosciences, 18, 669–706, https://doi.org/10.5194/bg-18-669-2021, https://doi.org/10.5194/bg-18-669-2021, 2021
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More than a quarter of the current anthropogenic CO2 emissions are taken up by land, reducing the atmospheric CO2 growth rate. This is because of the CO2 fertilization effect which benefits 80 % of global vegetation. However, if nitrogen and phosphorus nutrients cannot keep up with increasing atmospheric CO2, the magnitude of this terrestrial ecosystem service may reduce in future. This paper implements nitrogen constraints on photosynthesis in a model to understand the mechanisms involved.
Arianna Peron, Lisa Kaser, Anne Charlott Fitzky, Martin Graus, Heidi Halbwirth, Jürgen Greiner, Georg Wohlfahrt, Boris Rewald, Hans Sandén, and Thomas Karl
Biogeosciences, 18, 535–556, https://doi.org/10.5194/bg-18-535-2021, https://doi.org/10.5194/bg-18-535-2021, 2021
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Drought events are expected to become more frequent with climate change. Along with these events atmospheric ozone is also expected to increase. Both can stress plants. Here we investigate to what extent these factors modulate the emission of volatile organic compounds (VOCs) from oak plants. We find an antagonistic effect between drought stress and ozone, impacting the emission of different BVOCs, which is indirectly controlled by stomatal opening, allowing plants to control their water budget.
Lena Wohlgemuth, Stefan Osterwalder, Carl Joseph, Ansgar Kahmen, Günter Hoch, Christine Alewell, and Martin Jiskra
Biogeosciences, 17, 6441–6456, https://doi.org/10.5194/bg-17-6441-2020, https://doi.org/10.5194/bg-17-6441-2020, 2020
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Mercury uptake by trees from the air represents an important but poorly quantified pathway in the global mercury cycle. We determined mercury uptake fluxes by leaves and needles at 10 European forests which were 4 times larger than mercury deposition via rainfall. The amount of mercury taken up by leaves and needles depends on their age and growing height on the tree. Scaling up our measurements to the forest area of Europe, we estimate that each year 20 t of mercury is taken up by trees.
A. Anthony Bloom, Kevin W. Bowman, Junjie Liu, Alexandra G. Konings, John R. Worden, Nicholas C. Parazoo, Victoria Meyer, John T. Reager, Helen M. Worden, Zhe Jiang, Gregory R. Quetin, T. Luke Smallman, Jean-François Exbrayat, Yi Yin, Sassan S. Saatchi, Mathew Williams, and David S. Schimel
Biogeosciences, 17, 6393–6422, https://doi.org/10.5194/bg-17-6393-2020, https://doi.org/10.5194/bg-17-6393-2020, 2020
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We use a model of the 2001–2015 tropical land carbon cycle, with satellite measurements of land and atmospheric carbon, to disentangle lagged and concurrent effects (due to past and concurrent meteorological events, respectively) on annual land–atmosphere carbon exchanges. The variability of lagged effects explains most 2001–2015 inter-annual carbon flux variations. We conclude that concurrent and lagged effects need to be accurately resolved to better predict the world's land carbon sink.
Erqian Cui, Chenyu Bian, Yiqi Luo, Shuli Niu, Yingping Wang, and Jianyang Xia
Biogeosciences, 17, 6237–6246, https://doi.org/10.5194/bg-17-6237-2020, https://doi.org/10.5194/bg-17-6237-2020, 2020
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Mean annual net ecosystem productivity (NEP) is related to the magnitude of the carbon sink of a specific ecosystem, while its inter-annual variation (IAVNEP) characterizes the stability of such a carbon sink. Thus, a better understanding of the co-varying NEP and IAVNEP is critical for locating the major and stable carbon sinks on land. Based on daily NEP observations from eddy-covariance sites, we found local indicators for the spatially varying NEP and IAVNEP, respectively.
Taraka Davies-Barnard, Johannes Meyerholt, Sönke Zaehle, Pierre Friedlingstein, Victor Brovkin, Yuanchao Fan, Rosie A. Fisher, Chris D. Jones, Hanna Lee, Daniele Peano, Benjamin Smith, David Wårlind, and Andy J. Wiltshire
Biogeosciences, 17, 5129–5148, https://doi.org/10.5194/bg-17-5129-2020, https://doi.org/10.5194/bg-17-5129-2020, 2020
Rui Cheng, Troy S. Magney, Debsunder Dutta, David R. Bowling, Barry A. Logan, Sean P. Burns, Peter D. Blanken, Katja Grossmann, Sophia Lopez, Andrew D. Richardson, Jochen Stutz, and Christian Frankenberg
Biogeosciences, 17, 4523–4544, https://doi.org/10.5194/bg-17-4523-2020, https://doi.org/10.5194/bg-17-4523-2020, 2020
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We measured reflected sunlight from an evergreen canopy for a year to detect changes in pigments that play an important role in regulating the seasonality of photosynthesis. Results show a strong mechanistic link between spectral reflectance features and pigment content, which is validated using a biophysical model. Our results show spectrally where, why, and when spectral features change over the course of the season and show promise for estimating photosynthesis remotely.
Jarmo Mäkelä, Francesco Minunno, Tuula Aalto, Annikki Mäkelä, Tiina Markkanen, and Mikko Peltoniemi
Biogeosciences, 17, 2681–2700, https://doi.org/10.5194/bg-17-2681-2020, https://doi.org/10.5194/bg-17-2681-2020, 2020
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We assess the relative magnitude of uncertainty sources on ecosystem indicators of the 21st century climate change on two boreal forest sites. In addition to RCP and climate model uncertainties, we included the overlooked model parameter uncertainty and management actions in our analysis. Management was the dominant uncertainty factor for the more verdant southern site, followed by RCP, climate and parameter uncertainties. The uncertainties were estimated with canonical correlation analysis.
Guido Kraemer, Gustau Camps-Valls, Markus Reichstein, and Miguel D. Mahecha
Biogeosciences, 17, 2397–2424, https://doi.org/10.5194/bg-17-2397-2020, https://doi.org/10.5194/bg-17-2397-2020, 2020
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To closely monitor the state of our planet, we require systems that can monitor
the observation of many different properties at the same time. We create
indicators that resemble the behavior of many different simultaneous
observations. We apply the method to create indicators representing the
Earth's biosphere. The indicators show a productivity gradient and a water
gradient. The resulting indicators can detect a large number of changes and
extremes in the Earth system.
Barbara Marcolla, Mirco Migliavacca, Christian Rödenbeck, and Alessandro Cescatti
Biogeosciences, 17, 2365–2379, https://doi.org/10.5194/bg-17-2365-2020, https://doi.org/10.5194/bg-17-2365-2020, 2020
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This work investigates the sensitivity of terrestrial CO2 fluxes to climate drivers. We observed that CO2 flux is mostly controlled by temperature during the growing season and by radiation off season. We also observe that radiation importance is increasing over time while sensitivity to temperature is decreasing in Eurasia. Ultimately this analysis shows that ecosystem response to climate is changing, with potential repercussions for future terrestrial sink and land role in climate mitigation.
Stephanie C. Pennington, Nate G. McDowell, J. Patrick Megonigal, James C. Stegen, and Ben Bond-Lamberty
Biogeosciences, 17, 771–780, https://doi.org/10.5194/bg-17-771-2020, https://doi.org/10.5194/bg-17-771-2020, 2020
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Soil respiration (Rs) is the flow of CO2 from the soil surface to the atmosphere and is one of the largest carbon fluxes on land. This study examined the effect of local basal area (tree area) on Rs in a coastal forest in eastern Maryland, USA. Rs measurements were taken as well as distance from soil collar, diameter, and species of each tree within a 15 m radius. We found that trees within 5 m of our sampling points had a positive effect on how sensitive soil respiration was to temperature.
Keri L. Bowering, Kate A. Edwards, Karen Prestegaard, Xinbiao Zhu, and Susan E. Ziegler
Biogeosciences, 17, 581–595, https://doi.org/10.5194/bg-17-581-2020, https://doi.org/10.5194/bg-17-581-2020, 2020
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We examined the effects of season and tree harvesting on the flow of water and the organic carbon (OC) it carries from boreal forest soils. We found that more OC was lost from the harvested forest because more precipitation reached the soil surface but that during periods of flushing in autumn and snowmelt a limit on the amount of water-extractable OC is reached. These results contribute to an increased understanding of carbon loss from boreal forest soils.
Jason Philip Kaye, Susan L. Brantley, Jennifer Zan Williams, and the SSHCZO team
Biogeosciences, 16, 4661–4669, https://doi.org/10.5194/bg-16-4661-2019, https://doi.org/10.5194/bg-16-4661-2019, 2019
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Interdisciplinary teams can only capitalize on innovative ideas if members work well together through collegial and efficient use of field sites, instrumentation, samples, data, and model code. Thus, biogeoscience teams may benefit from developing a set of best practices for collaboration. We present one such example from a the Susquehanna Shale Hills critical zone observatory. Many of the themes from our example are universal, and they offer insights useful to other biogeoscience teams.
Anne Alexandre, Elizabeth Webb, Amaelle Landais, Clément Piel, Sébastien Devidal, Corinne Sonzogni, Martine Couapel, Jean-Charles Mazur, Monique Pierre, Frédéric Prié, Christine Vallet-Coulomb, Clément Outrequin, and Jacques Roy
Biogeosciences, 16, 4613–4625, https://doi.org/10.5194/bg-16-4613-2019, https://doi.org/10.5194/bg-16-4613-2019, 2019
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This calibration study shows that despite isotope heterogeneity along grass leaves, the triple oxygen isotope composition of bulk leaf phytoliths can be estimated from the Craig and Gordon model, a mixing equation and a mean leaf water–phytolith fractionation exponent (lambda) of 0.521. The results strengthen the reliability of the 17O–excess of phytoliths to be used as a proxy of atmospheric relative humidity and open tracks for its use as an imprint of leaf water 17O–excess.
Cited articles
Alcamo, J. and Olesen, J. E.: Life in Europe Under Climate Change, ISBN 978-1-4051-9619-2, Wiley Blackwell, Chichester, UK, 2012.
Bartoli, M., Racchetti, E., Delconte, C. A., Sacchi, E., Soana, E., Laini, A., Longhi, D., and Viaroli, P.: Nitrogen balance and fate in a heavily impacted watershed (Oglio River, Northern Italy): in quest of the missing sources and sinks, Biogeosciences, 9, 361–373, https://doi.org/10.5194/bg-9-361-2012, 2012.
Bende-Michl, U., Volk, M., Newham, L., Harmel, D., and Dalgaard, T.: Monitoring strategies and scale appropriate hydrologic and biogeochemical modelling for natural resource management. Short communication, Environ. Model. Softw., 26, 538–542, 2011.
Beukes, P. C., Scarsbrook, M. R., Gregorini, P., Romera, A. J., Clark, D. A., and Catto, W.: The relationship between milk production and farm-gate nitrogen surplus for the Waikato region, New Zealand, J. Env. Man., 93, 44–51, 2012.
Bienkowski, J., Jankowiak, J., Kedziora, A., and Wasilewski, J.: Possibilities for the Development of Mixed Crop-Beef Farming in the Koscian Region Based on Natural Fodder Resources. Results from the MEA-Scope Case Study in Poland, in: Rural Landscapes and Agricultural Policies in Europe, edited by: Piorr, A. and Müller, K., 269–283, Springer Verlag, Berlin, 2009.
Billen, G., Garnier, J., Thieu, V., Silvestre, M., Barles, S., and Chatzimpiros, P.: Localising the nitrogen imprint of the Paris food supply: the potential of organic farming and changes in human diet, Biogeosciences, 9, 607–616, https://doi.org/10.5194/bg-9-607-2012, 2012.
Bleken, M. A., Steinshamn, H., and Hansen, S.: High nitrogen costs of dairy production in Europe: Worsened by intensification, Ambio, 34, 598–606, 2005.
Bouraoui, F., Turpin, N., and Boerlen, P.: Trend analysis of nutrient concentrations and loads in surface water in an intensively fertilized watershed, J. Environ. Quality, 28, 1878–1885, 1999.
Brink, C. and van Grinsven, H. V.: Costs and Benefits of nitrogen in the environment, in: The European Nitrogen Assessment, edited by: Sutton, M. A., Howard, C. M., Erisman, J. W., Billen, G., Bleeker, A., Grennfelt, P., Grinsven, H., and Grizzetti, B., Cambridge University Press, pp. 513–540, 2011.
Cameron, J. P., Gourley, A. S. R., Powell, J. M., and Mark, J.: Nitrogen use efficiency and manure management practices in contrasting dairy production systems, Agriculture, Ecosystems Environ., 147, 73–81, 2012.
Cellier, P., Durand, P., Hutchings, N., Dragosits, U., Theobald, M., Drouet, J. L., Oenema, O., Bleeker, A., Breuer, L., Dalgaard, T., Duretz, S., Kros, J., Loubet, B., Olesen, J. E., Mérot, P., Viaud, V., de Vries, W., and Sutton, M. A.: Dispersion and fate of nitrogen in rural landscapes, in: The European Nitrogen Assessment. Chapter 11, edited by: Sutton, M. A., Howard, C. M., Erisman, J. W., Billen, G., Bleeker, A., Grennfelt, P., Grinsven, H., and Grizzetti, B., pp. 229–248 Cambridge University Press, 2011.
Christen, B. and Dalgaard, T.: Buffers for biomass production in temperate European agriculture: A review and synthesis on function, ecosystem services and implementation, Biomass and Bioenergy, in press, https://doi.org/10.1016/j.biombioe.2012.09.053, 2012.
Dalgaard, T., Halberg, N., and Kristensen, I. S.: Can organic farming help to reduce N-losses? Experiences from Denmark, Nutrient Cycling in Agroecosystems, 52, 277–287, 1998.
Dalgaard, T., Heidman, T., and Mogensen, L.: Potential N-losses in three scenarios for conversion to organic farming in a local area of Denmark, European Journal of Agronomy, 16, 207–221, 2002a.
Dalgaard, T., Rygnestad, H., Jensen, J. D., and Larsen, P. E.: Methods to map and simulate agricultural activity at the landscape scale, Danish J. Geogr., 3, 29–39, 2002b.
Dalgaard, T., Kjeldsen, C., Jørgensen, M. S., Hutchings, N., Mogensen, L., Osuch, A., Damgaard, M., Happe, K., and Piorr, A.: Scaling from Farm to Landscape – a Bottom-up Methodology for the Modelling and Mapping of Farm Nitrogen Surpluses, in: Rural Landscapes and Agricultural Policies in Europe, edited by: Piorr, A. and Müller, K., p. 175–190, Springer Verlag, Berlin, 2009.
Dalgaard, T., Hutchings, N., Dragosits, U., Olesen, J. E., Kjeldsen, C., Drouet, J. L., and Cellier, P.: Effects of farm heterogeneity on modelling and upscaling of nitrogen losses and greenhouse gas emissions in agricultural landscapes, Environ. Pollut., 159, 3183–3192, 2011.
De Vries, W., Cellier, P., Erisman, J. W., and Sutton, M. A.: Assessment of nitrogen fluxes to air and water from site scale to continental scale: an overview, Environ. Pollut., 159, 3143–3148, 2011.
Dise, N. B., Ashmore, M., Belyazid, S., Bleeker, A., Bobbink, R., de Vries, W., Erisman, J. W., Spranger, T., and van den Berg, C. J. S. L.: Nitrogen as a threat to European Terrestical Biodiversity, in: The European Nitrogen Assessment, edited by: Sutton, M. A., Howard, C. M., Erisman, J. W., Billen, G., Bleeker, A., Grennfelt, P., Grinsven, H., and Grizzetti, B., Chapter 20, p. 463–494, Cambridge University Press, 2011.
Dragosits, U., Theobald, M. R., Place, C. J., Lord, E., Webb, J., Hill, J., ApSimon, H. M., and Sutton, M. A.: Ammonia emission, deposition and impact assessment at the field scale: a case study of sub-grid spatial variability, Environ. Pollut., 117, 147–158, 2002.
Dragosits, U., Theobald, M. R., Place, C. J., Simon, H. M., and Sutton, M. A.: Spatial planning at the landscape level to mitigate the effects of atmospheric ammonia deposition, J. Environ. Sci. Policy, 9, 626–638, 2006.
Dragosits, U. and Dalgaard, T.: Notes for filling in the NEU C4 Landscape Questionnaire and Database. Recommended approach for completing the landscape inventory, NitroEurope Deliverable report D4.1.2, 10 p. (www.NitroeEurope.eu), Centre for Ecology and Hydrology, Scotland, 2008.
Dragosits, U., Dalgaard, T., Hutchings, N., Durand, P., Bienkowski, J., Magliulo, V., Frumau, K. F. A., McDonald, C., Murray, S., Luk, J., Olesen, J. E., Pugesgaard, S., Drouet, J.-L., Akkal, N., and Cellier, P.: How (not) to produce detailed farm management inventories for landscape scale nitrogen modelling, Paper presented at the NitroEurope Open Conference "Nitrogen & Global Change: Key findings – future challenges", Edinburgh, Conference abstract, 2 pp., available at: http://nitrogen.ceh.ac.uk/nitrogen2011/_oral_presentations/S12_3_Dragosits.pdf, 11–15 April 2011.
Drouet, J.-L., Maury, O., Dalgaard, T., Dragosits, U., Theobald, M. R., Durand, P., Sutton, M. A., and Cellier, P.: An integrated database for European agricultural landscapes. Proceedings of the Conference "Nitrogen and Global Change, Key findings, future challenges", 11–14 April 2011, Edinburgh, UK, 2011.
Drouet, J.-L., Duretz, S., Durand, P., and Cellier, P.: Modelling the contribution of short-range atmospheric and hydrological transfers to nitrogen fluxes, budgets and indirect emissions in rural landscapes, Biogeosciences, 9, 1647–1660, https://doi.org/10.5194/bg-9-1647-2012, 2012.
Durand, P.: Simulating nitrogen budgets in complex farming systems using INCA: calibration and scenario analyses for the Kervidy catchment (W. France), Hydrol. Earth Syst. Sci., 8, 793–802, https://doi.org/10.5194/hess-8-793-2004, 2004.
Durand, P., Akkal, N., Flechard, C., Drouet, J., Hamon, Y., Molenat, J., Hassouna, M., and Cellier, P.: Nitrogen fluxes and budgets in a NEU C4 site (Kervidy-Naizin, France) with high nitrogen surplus: measurements and modelling, available at: http://nitrogen.ceh.ac.uk/solothurn/NEU_Booklet_Solothurn_Feb_2010.pdf, in: Reactive Nitrogen and the European Greenhouse Gas Balance. Open Science Conference Proceedings, Solothurn, Switzerland, section 4.7, p. 75, 2010.
EMEP: Transboundary Acidification, Eutrophication and Ground Level Ozone in Europe in 2006, ISSN 1504-6109, available at: http://webdab.emep.int/Unified_Model_Results/userguide_frame.html, EMEP Status Report 1/2008, 2008.
EMEP: Transboundary Acidification, Eutrophication and Ground Level Ozone in Europe in 2008, ISSN 1504-6109, available at: http://webdab.emep.int/Unified_Model_Results/userguide_frame.html, EMEP Status Report 1/2010, 2010.
European Environmental Agency: Europe's biodiversity - biogeographical regions and seas, available at: http://www.eea.europa.eu/publications/report_2002_0524_154909, EEA Report No 1/2002. Copenhagen, 2002.
European Environmental Agency: Agriculture and environment in EU-15 – the IRENA indicator report, EEA Report No 6/2005 ISBN 92-9167-779-5, ISSN 1725-9177, EEA, Copenhagen, 2005.
EUROSTAT: Europe in Figures. Farm structure statistics, EUROSTAT Yearbook, ISBN: 978-92-79-18414-7, available at: http://epp.eurostat.ec.europa.eu/statistics_explained/index.php/Farm_structure, European Statistical Bureau, Luxembourg, 2011.
Galloway, J. N., Aber, J. D., Erisman, J. W., Seitzinger, S. P., Howarth, R. W., Cowling, E. B., and Cosby, B. J.: The Nitrogen Cascade, BioScience, 53, 341–356, 2003.
Halberg, N.: Indicators of resource use and environmental impact for use in a decision aid for Danish Livestock Farmers. Agriculture, Ecosystems and Environment, 76, 17–30, 1999.
Hansen, J. (Ed.): Arealanvendelse og landskabsudvikling. Fremtidsperspektiver for natur, jordbrug, miljø og arealforvaltning, http://web.agrsci.dk/djfpublikation/djfpdf/djfma110.pdf, DJF report no. 110, Markbrug (with English summaries), 2004.
Hansen, J. and Kyllingsbæk, A.: Development in nutrient balances in Danish agriculture 1980–2004, Nutr Cycl Agroecosyst, 79, 267–280, 2007.
Hansen, B., Thorling, L., Dalgaard, T., and Erlandsen, M.: Trend reversal of nitrate in Danish groundwater – a reflection of agricultural practices and nitrogen surpluses since 1950, Environ. Sci. Technol., 45, 207–234, 2011.
Hansen, B., Dalgaard, T., Thorling, L., Sørensen, B., and Erlandsen, M.: Regional analysis of groundwater nitrate concentrations and trends in Denmark in regard to agricultural influence, Biogeosciences, 9, 3277–3286, https://doi.org/10.5194/bg-9-3277-2012, 2012.
Happe, K., Hutchings, N., Dalgaard, T., and Kellermann, K.: Modelling the interactions between regional farming structure, nitrogen losses and environmental regulation, Agricultural Systems, 104, 281–291, 2011.
Heij, G. H. and Erismann, J. W.: Acid Atmospheric Deposition and Its Effects on Terrestrial Ecosystems in The Netherlands, Studies in Environmental Sciences 69, ISBN 0-444-82037-X, Elsevier, Amsterdam, 1997.
Hewett, C. J. M., Quinn, P. F., Heathwaite, A. L., Doyle, A., Burke, S., Whitehead, P. G., and Lerner, D. N.: A multi-scale framework for strategic management of diffuse pollution, Environ. Model. Softw., 24, 74–85, 2009.
Høgh-Jensen, H. and Schjørring, J. K.: Measurement of biological dinitrogen fixation in grassland: Comparison of the enriched 15N dilution and the natural 15N abundance methods at different nitrogen application rates and defoliation frequencies, Plant and Soil, 166, 2, 153–163, 1994.
Hutchings, N., Dalgaard, T., Rasmussen, B. M., Hansen, J. F., Dahl, M., Jørgensen, L. F., Ernstsen, V., von Platen-Hallermund, F., and Pedersen, S. S.: Watershed nitrogen modelling, in: Controlling nitrogen flows and losses, edited by: Hatch, D. J., Chadwick, D. R., Jarvis, S. C., and Roker, J. A., Wageningen Academic Publishers, ISBN 90-7699-984-34, p. 47–53, 2004.
Hutchings, N. J., Reinds, G. J., Leip, A., Wattenbach, M., Bienkowski, J. F., Dalgaard, T., Dragosits, U., Drouet, J. L., Durand, P., Maury, O., and de Vries, W.: A model for simulating the timelines of field operations at a European scale for use in complex dynamic models, Biogeosciences, 9, 4487–4496, https://doi.org/10.5194/bg-9-4487-2012, 2012.
INRA: Kervidy-Naizin site. AgrHyS Environment Research Observatory, http://www.inra.fr/ore_agrhys_eng, http://www.inra.fr/ore_agrhys_eng/presentation/site_et_equipement/site_de_kervidy_naizin/sols_et_lithologie, Institute National a la Recherche Agronomique, Paris, 2008.
Kronvang, B., Andersen, H. E., Børgesen, C. D., Dalgaard, T., Larsen, S. E., Bøgestrand, J., and Blicher-Mathiasen, G.: Effects of policy measures implemented in Denmark on nitrogen pollution of the aquatic environment, Environ. Sci. Policy, 11, 144–152, 2008.
Lassaletta, L., Romero, E., Billen, G., Garnier, J., García-Gómez, H., and Rovira, J. V.: Spatialized N budgets in a large agricultural Mediterranean watershed: high loading and low transfer, Biogeosciences, 9, 57–70, https://doi.org/10.5194/bg-9-57-2012, 2012.
Leip, A., Marchi, G., Koeble, R., Kempen, M., Britz, W., and Li, C.: Linking an economic model for European agriculture with a mechanistic model to estimate nitrogen and carbon losses from arable soils in Europe, Biogeosciences, 5, 73–94, https://doi.org/10.5194/bg-5-73-2008, 2008.
Levin, G. and Jepsen, M. R.: Abolition of set-aside schemes, associated impacts on habitat structure and modelling of potential effects of cross-farm regulation, Ecol. Model., 221, 2728–2737, 2010.
Molenat, J., Gascuel-Odoux, C., Ruiz, L., and Gruau, G.: Role of water table dynamics on stream nitrate export and concentration in agricultural headwater catchment (France), J. Hydrol., 348, 363–378, 2008.
Neumann, K., Verburg, P. H., Elbersen, B., Stehfest, E., and Woltjer, G. B.: Multi-scale scenarios of spatial-temporal dynamics in the European livestock sector, Agriculture, Ecosystems and Environment, 140, 88–101, 2011.
NitroEurope: Official Homepage for the NitroEurope Integrated Project: The nitrogen cycle and its influence on the European greenhouse gas balance, available at: www.NitroEurope.eu, Centre for Ecology and Hydrology, Edinburgh, Scotland, 2012.
OECD: Environmental Performance of Agriculture in OECD Countries since 1990, ISBN 978-92-64-04092-2, avaukabke at: http://www.oecd.org/dataoecd/61/21/44254899.pdf, OECD, Paris, France, 2008.
Oenema, O., Bleeker, A., Braathen, N. A., Budnakova, M., Bull, K, Cermak, P., Geupel, M., Hicks, K., Hoft, R., Kozlova, N., Leip, A., Spranger, T., Valli, L., Veldhof, G., and Winiwarter, W.: Nitrogen in current European policies, in: The European Nitrogen Assessment, edited by: Sutton, M. A., Howard, C. M., Erisman, J. W., Billen, G., Bleeker, A., Grennfelt, P., Grinsven, H., and Grizzetti, B., Chapter 11, p. 62–81, Cambridge University Press, 2011.
Pedersen, R. M. H.: Development in Agricultural Nitrogen Surplus compared with the Amount of supplied Animal Manure – Study of selected Farms in a Danish Agricultural Landscape from 1998 to 2008, Bachelor project report, 38 p. Aarhus University, November 2011.
PlanteInfo: server=172.23.173.222{&} port=5007{&}pi menu=1{&}Fuzz=719, http://www.planteinfo.dk/Vejret/2008/index.asp?itemid=649&appl=0&sessionid=DTzWYlw9M52&, accessed: 14 June 2012, 2012.
Schelde, K., Cellier, P., Bertolini, T., Dalgaard, T., Weidinger, T., Theobald, M. R., and Olesen, J. E.: Spatial and temporal variability of nitrous oxide emissions in a mixed farming landscape of Denmark, Biogeosciences, 9, 2989–3002, https://doi.org/10.5194/bg-9-2989-2012, 2012.
Shingo, H. and Kiyotada, H.: Variability in environmental impacts during conversion from conventional to organic farming: a comparison among three rice production systems in Japan, Journal of Cleaner Production, 28, 101–112, 2012.
Skiba, U., Dick, J., Storeton-West, R., Lopez-Fernandez, S., Woods, C., Tang, S., and vanDijk, N.: The relationship between NH3 emissions from a poultry farm and soil NO and N2O fluxes from a downwind forest, Biogeosciences, 3, 375–382, https://doi.org/10.5194/bg-3-375-2006, 2006.
Smil, V.: Nitrogen in crop production: an account of global flows, Global Biogeochem. Cycles, 13, 647–662, 1999.
Sonneveld, M. P. W., Schoorl, J. M., and Veldkamp, A.: Mapping hydrological pathways of phosphorus transfer in apparently homogeneous landscapes using a high-resolution DEM, Geoderma, 133, 32–42, 2006.
Spiess, E.: Nitrogen, phosphorus and potassium balances and cycles of Swiss agriculture from 1975 to 2008, Nutrient Cycling in Agroecosystems, 91, 351–365, 2011.
Strudsholm, F., Nielsen, E. S., and Flye, J. C.: Fodermiddeltabel 1997. Sammensætning og foderværdi af fodermidler til kvæg, Report, 69, 53 p., Danish Extension Service, Skejby, 1997.
Sutton, M. A., Nemitz, E., Erisman, J. W., Beier, C., Butterbach Bahl, K., Cellier, P., de Vries, W., Cotrufo, F., Skiba, U., Di Marco, C., Jones, S., Laville, P., Soussana, J. F., Loubet, B., Twigg, M., Famulari, D., Whitehead, J., Gallagher, M. W., Neftel, A., Flechard, C. R., Herrmann, B., Calanca, P. L., Schjoerring, J. K., Daemmgen, U., Horvath, L., Tang, Y. S., Emmett, B. A., Tietema, A., Peñuelas, J., Kesik, M., Brueggemann, N., Pilegaard, K., Vesala, T., Campbell, C. L., Olesen, J. E., Dragosits, U., Theobald, M. R., Levy, P., Mobbs, D. C,. Milne, R., Viovy, N., Vuichard, N., Smith, J. U., Smith, P., Bergamaschi, P., Fowler, D., and Reis, S.: Challenges in quantifying biosphere-atmosphere exchange of nitrogen species, Environ. Pollut., 150, 125–139, 2007.
Theobald, M. R., Akkal, N., Bienkowski, J., Bleeker, A., Boegh, E., Boissy, J., Braban, C. F., Dalgaard, T., Decuq, C., Dragosits, U., Drouet, J.-L., Durand, B., Durand, P., Fauvel, Y., Flechard, C., Frumau, K. F. A., Hamon, Y., Hensen, A., Janku, K., Kedziora, A., Kulek, B., Magliulo, E., Magliulo, P., Masson, S., Maury, O., Nowak, M., Olesen, J. E., Oliva, M., Palumbo, I., Pugesgaard, S., Schelde, K., Szczepanski, M., Vitale, L., Vogt, E., Sutton, M. A., and Cellier, P.: Strategies for measuring flows of reactive nitrogen at the landscape scale, Nitrogen & global change key findings – future challenges, Conference proceedings, Edinburgh, 11–15 April 2011, S12-1, 2011.
Tress, B., Tress, G., Fry, G., and Opdam, P.: From Landscape Research to Landscape Planning: Aspects of Integration, Education and application, Springer Verlag, Dordrecht, The Netherlands, 2006.
Ullrich, A. and Volk, M.: Influence of different nitrate-N monitoring strategies onload estimation as a base for model calibration and evaluation, Environ. Monit. Assess., 171, 513–527, 2010.
United Nations Populations Fund: People and Possibilities in a World of 7 Billion. UNFPA, New York, http://foweb.unfpa.org/SWP2011/reports/EN-SWOP2011-FINAL.pdf, 124 p. 2011.
van Grinsven, H. J. M., ten Berge, H. F. M., Dalgaard, T., Fraters, B., Durand, P., Hart, A., Hofman, G., Jacobsen, B. H., Lalor, S. T. J., Lesschen, J. P., Osterburg, B., Richards, K. G., Techen, A.-K., Vertès, F., Webb, J., and Willems, W. J.: Management, regulation and environmental impacts of nitrogen fertilization in Northwestern Europe under the Nitrates Directive; a benchmark study, Biogeosciences Discuss., 9, 7353–7404, https://doi.org/10.5194/bgd-9-7353-2012, 2012.
Vogt, E., Braban, C. F., Dragosits, U., Theobald, M. R., Billett, M. F., Dore, A. J., Tang, Y. S., van Dijk, N., Rees, R. M., McDonald, C., Murray, S., Skiba, U. M., and Sutton, M. A.: Estimation of nitrogen budgets for contrasting catchments at the landscape scale, Biogeosciences Discuss., 9, 8989–9028, https://doi.org/10.5194/bgd-9-8989-2012, 2012.
Volk, M., Liersch, S., and Schmidt, G.: Towards the implementation of the European Water Framework Directive? Lessons learned from water quality simulations in an agricultural watershed, Land Use Policy, 26, 580–588, 2009.
Wohlfart, T., Exbrayat, J.-F., Schelde, K., Christen, B., Dalgaard, T., Frede, H.-G., and Breuer, L.: Spatial distribution of soils determines export of nitrogen and dissolved organic carbon from an intensively managed agricultural landscape, Biogeosciences, 9, 4513–4525, https://doi.org/10.5194/bg-9-4513-2012, 2012.
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