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Volume 12, issue 6
Biogeosciences, 12, 1683–1696, 2015
https://doi.org/10.5194/bg-12-1683-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/bg-12-1683-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
Biogeosciences, 12, 1683–1696, 2015
https://doi.org/10.5194/bg-12-1683-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/bg-12-1683-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
Research article 17 Mar 2015
Research article | 17 Mar 2015
Tidal controls on trace gas dynamics in a seagrass meadow of the Ria Formosa lagoon (southern Portugal)
E. Bahlmann et al.
Related authors
I. Weinberg, E. Bahlmann, T. Eckhardt, W. Michaelis, and R. Seifert
Biogeosciences, 12, 1697–1711, https://doi.org/10.5194/bg-12-1697-2015, https://doi.org/10.5194/bg-12-1697-2015, 2015
Shujiro Komiya, Fumiyoshi Kondo, Heiko Moossen, Thomas Seifert, Uwe Schultz, Heike Geilmann, David Walter, and Jost V. Lavric
Atmos. Meas. Tech. Discuss., https://doi.org/10.5194/amt-2020-305, https://doi.org/10.5194/amt-2020-305, 2020
Preprint under review for AMT
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The Amazon basin influences the atmospheric and hydrological cycles on local to global scales. To better understand how, we plan to perform continuous on-site measurements of the stable isotope composition of atmospheric water vapour. For making accurate on-site observations possible, we have investigated the performance of two commercial analysers and determined the best calibration strategy. Well-calibrated, both analysers will allow us to record natural signals in the Amazon rainforest.
Robbie Ramsay, Chiara F. Di Marco, Matthias Sörgel, Mathew R. Heal, Samara Carbone, Paulo Artaxo, Alessandro C. de Araùjo, Marta Sá, Christopher Pöhlker, Jost Lavric, Meinrat O. Andreae, and Eiko Nemitz
Atmos. Chem. Phys. Discuss., https://doi.org/10.5194/acp-2020-586, https://doi.org/10.5194/acp-2020-586, 2020
Preprint under review for ACP
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The Amazon Rainforest is a unique “laboratory” to study the processes which govern the exchange of gases and aerosols to and from the atmosphere. This study investigated these processes by measuring the atmospheric concentrations of trace gases and particles at the Amazon Tall Tower Observatory. We found that the long-range transport of pollutants can affect the atmospheric composition above the Amazon rainforest, and that the gases ammonia and nitrous acid can be emitted from the rainforest.
Rachel L. Tunnicliffe, Anita L. Ganesan, Robert J. Parker, Hartmut Boesch, Nicola Gedney, Benjamin Poulter, Zhen Zhang, Jošt V. Lavrič, David Walter, Matthew Rigby, Stephan Henne, Dickon Young, and Simon O'Doherty
Atmos. Chem. Phys. Discuss., https://doi.org/10.5194/acp-2020-438, https://doi.org/10.5194/acp-2020-438, 2020
Revised manuscript accepted for ACP
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This study quantifies Brazil’s emissions of a potent atmospheric greenhouse gas, methane. The study is in the field of atmospheric modelling and uses remotely sensed and surface measurements of methane concentrations and an atmospheric transport model to interpret the data. Because of Brazil’s large emissions from wetlands, agriculture and biomass burning, these emissions affect global methane concentrations and thus are of global significance.
Santiago Botía, Christoph Gerbig, Julia Marshall, Jost V. Lavric, David Walter, Christopher Pöhlker, Bruna Holanda, Gilberto Fisch, Alessandro Carioca de Araújo, Marta O. Sá, Paulo R. Teixeira, Angélica F. Resende, Cleo Q. Dias-Junior, Hella van Asperen, Pablo S. Oliveira, Michel Stefanello, and Otávio C. Acevedo
Atmos. Chem. Phys., 20, 6583–6606, https://doi.org/10.5194/acp-20-6583-2020, https://doi.org/10.5194/acp-20-6583-2020, 2020
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A long record of atmospheric methane concentrations in central Amazonia was analyzed. We describe events in which concentrations at 79 m are higher than at 4 m. These events are more frequent during the nighttime of dry season, but we found no association with fire signals. Instead, we suggest that a combination of nighttime transport and a nearby source could explain such events. Our research gives insights into how methane is transported in the complex nocturnal atmosphere in Amazonia.
Bruna A. Holanda, Mira L. Pöhlker, David Walter, Jorge Saturno, Matthias Sörgel, Jeannine Ditas, Florian Ditas, Christiane Schulz, Marco Aurélio Franco, Qiaoqiao Wang, Tobias Donth, Paulo Artaxo, Henrique M. J. Barbosa, Stephan Borrmann, Ramon Braga, Joel Brito, Yafang Cheng, Maximilian Dollner, Johannes W. Kaiser, Thomas Klimach, Christoph Knote, Ovid O. Krüger, Daniel Fütterer, Jošt V. Lavrič, Nan Ma, Luiz A. T. Machado, Jing Ming, Fernando G. Morais, Hauke Paulsen, Daniel Sauer, Hans Schlager, Johannes Schneider, Hang Su, Bernadett Weinzierl, Adrian Walser, Manfred Wendisch, Helmut Ziereis, Martin Zöger, Ulrich Pöschl, Meinrat O. Andreae, and Christopher Pöhlker
Atmos. Chem. Phys., 20, 4757–4785, https://doi.org/10.5194/acp-20-4757-2020, https://doi.org/10.5194/acp-20-4757-2020, 2020
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Biomass burning smoke from African savanna and grassland is transported across the South Atlantic Ocean in defined layers within the free troposphere. The combination of in situ aircraft and ground-based measurements aided by satellite observations showed that these layers are transported into the Amazon Basin during the early dry season. The influx of aged smoke, enriched in black carbon and cloud condensation nuclei, has important implications for the Amazonian aerosol and cloud cycling.
Martin Kunz, Jost V. Lavric, Rainer Gasche, Christoph Gerbig, Richard H. Grant, Frank-Thomas Koch, Marcus Schumacher, Benjamin Wolf, and Matthias Zeeman
Atmos. Meas. Tech., 13, 1671–1692, https://doi.org/10.5194/amt-13-1671-2020, https://doi.org/10.5194/amt-13-1671-2020, 2020
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The nocturnal boundary layer (NBL) budget method enables the quantification of gas fluxes between ecosystems and the atmosphere under nocturnal stable stratification, a condition under which standard approaches struggle. However, up to now the application of the NBL method has been limited by difficulties in obtaining the required measurements. We show how an unmanned aircraft system (UAS) equipped with a carbon dioxide analyser can make this method more accessible.
Friedemann Reum, Mathias Göckede, Jost V. Lavric, Olaf Kolle, Sergey Zimov, Nikita Zimov, Martijn Pallandt, and Martin Heimann
Atmos. Meas. Tech., 12, 5717–5740, https://doi.org/10.5194/amt-12-5717-2019, https://doi.org/10.5194/amt-12-5717-2019, 2019
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We present continuous in situ measurements of atmospheric CO2 and CH4 mole fractions at the new station Ambarchik, located in northeastern Siberia. We describe the site, measurements and quality control, characterize the signals in comparison with data from Barrow, Alaska, and show which regions the measurements are sensitive to. Ambarchik data are available upon request.
Eric J. Morgan, Jost V. Lavric, Damian L. Arévalo-Martínez, Hermann W. Bange, Tobias Steinhoff, Thomas Seifert, and Martin Heimann
Biogeosciences, 16, 4065–4084, https://doi.org/10.5194/bg-16-4065-2019, https://doi.org/10.5194/bg-16-4065-2019, 2019
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Taking a 2-year atmospheric record of atmospheric oxygen and the greenhouse gases N2O, CO2, and CH4, made at a coastal site in the Namib Desert, we estimated the fluxes of these gases from upwelling events in the northern Benguela Current region. We compared these results with flux measurements made on a research vessel in the study area at the same time and found that the two approaches agreed well. The study region was a source of N2O, CO2, and CH4 to the atmosphere during upwelling events.
Christopher Pöhlker, David Walter, Hauke Paulsen, Tobias Könemann, Emilio Rodríguez-Caballero, Daniel Moran-Zuloaga, Joel Brito, Samara Carbone, Céline Degrendele, Viviane R. Després, Florian Ditas, Bruna A. Holanda, Johannes W. Kaiser, Gerhard Lammel, Jošt V. Lavrič, Jing Ming, Daniel Pickersgill, Mira L. Pöhlker, Maria Praß, Nina Löbs, Jorge Saturno, Matthias Sörgel, Qiaoqiao Wang, Bettina Weber, Stefan Wolff, Paulo Artaxo, Ulrich Pöschl, and Meinrat O. Andreae
Atmos. Chem. Phys., 19, 8425–8470, https://doi.org/10.5194/acp-19-8425-2019, https://doi.org/10.5194/acp-19-8425-2019, 2019
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The Amazon Tall Tower Observatory (ATTO) has been established to monitor the rain forest's biosphere–atmosphere exchange, which experiences the combined pressures from human-made deforestation and progressing climate change. This work is meant to be a reference study, which characterizes various geospatial properties of the ATTO footprint region and shows how the human-made transformation of Amazonia may impact future atmospheric observations at ATTO.
Friedemann Reum, Christoph Gerbig, Jost V. Lavric, Chris W. Rella, and Mathias Göckede
Atmos. Meas. Tech., 12, 1013–1027, https://doi.org/10.5194/amt-12-1013-2019, https://doi.org/10.5194/amt-12-1013-2019, 2019
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Atmospheric CO2 and CH4 mole fractions are often measured using greenhouse gas analyzers manufactured by Picarro, Inc. We report biases in these measurements that are related to pressure changes in the optical cavity of the analyzers and occur mainly at low water vapor mole fractions. We provide a method to correct the biases, which contributes to keeping the overall accuracy of CO2 and CH4 measurements with Picarro analyzers within the WMO interlaboratory compatibility goals.
Ekaterina Ezhova, Ilona Ylivinkka, Joel Kuusk, Kaupo Komsaare, Marko Vana, Alisa Krasnova, Steffen Noe, Mikhail Arshinov, Boris Belan, Sung-Bin Park, Jošt Valentin Lavrič, Martin Heimann, Tuukka Petäjä, Timo Vesala, Ivan Mammarella, Pasi Kolari, Jaana Bäck, Üllar Rannik, Veli-Matti Kerminen, and Markku Kulmala
Atmos. Chem. Phys., 18, 17863–17881, https://doi.org/10.5194/acp-18-17863-2018, https://doi.org/10.5194/acp-18-17863-2018, 2018
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Understanding the connections between aerosols, solar radiation and photosynthesis in terrestrial ecosystems is important for estimates of the CO2 balance in the atmosphere. Atmospheric aerosols and clouds influence solar radiation. In this study, we quantify the aerosol effect on solar radiation in boreal forests and study forest ecosystems response to this change in the radiation conditions. The analysis is based on atmospheric observations from several remote stations in Eurasian forests.
Jorge Saturno, Bruna A. Holanda, Christopher Pöhlker, Florian Ditas, Qiaoqiao Wang, Daniel Moran-Zuloaga, Joel Brito, Samara Carbone, Yafang Cheng, Xuguang Chi, Jeannine Ditas, Thorsten Hoffmann, Isabella Hrabe de Angelis, Tobias Könemann, Jošt V. Lavrič, Nan Ma, Jing Ming, Hauke Paulsen, Mira L. Pöhlker, Luciana V. Rizzo, Patrick Schlag, Hang Su, David Walter, Stefan Wolff, Yuxuan Zhang, Paulo Artaxo, Ulrich Pöschl, and Meinrat O. Andreae
Atmos. Chem. Phys., 18, 12817–12843, https://doi.org/10.5194/acp-18-12817-2018, https://doi.org/10.5194/acp-18-12817-2018, 2018
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Biomass burning emits light-absorbing aerosol particles that warm the atmosphere. One of them is the primarily emitted black carbon, which strongly absorbs radiation in the visible and UV spectral regions. Another one is the so-called brown carbon, a fraction of organic aerosol particles that are able to absorb radiation, especially in the UV spectral region. The contribution of both kinds of aerosol particles to light absorption over the Amazon rainforest is studied in this paper.
Mira L. Pöhlker, Florian Ditas, Jorge Saturno, Thomas Klimach, Isabella Hrabě de Angelis, Alessandro C. Araùjo, Joel Brito, Samara Carbone, Yafang Cheng, Xuguang Chi, Reiner Ditz, Sachin S. Gunthe, Bruna A. Holanda, Konrad Kandler, Jürgen Kesselmeier, Tobias Könemann, Ovid O. Krüger, Jošt V. Lavrič, Scot T. Martin, Eugene Mikhailov, Daniel Moran-Zuloaga, Luciana V. Rizzo, Diana Rose, Hang Su, Ryan Thalman, David Walter, Jian Wang, Stefan Wolff, Henrique M. J. Barbosa, Paulo Artaxo, Meinrat O. Andreae, Ulrich Pöschl, and Christopher Pöhlker
Atmos. Chem. Phys., 18, 10289–10331, https://doi.org/10.5194/acp-18-10289-2018, https://doi.org/10.5194/acp-18-10289-2018, 2018
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This paper presents the aerosol and cloud condensation nuclei (CCN) variability for characteristic atmospheric states – such as biomass burning, long-range transport, and pristine rain forest conditions – in the vulnerable and climate-relevant Amazon Basin. It summarizes the key properties of aerosol and CCN and, thus, provides a basis for an in-depth analysis of aerosol–cloud interactions in the Amazon region.
Daniel Moran-Zuloaga, Florian Ditas, David Walter, Jorge Saturno, Joel Brito, Samara Carbone, Xuguang Chi, Isabella Hrabě de Angelis, Holger Baars, Ricardo H. M. Godoi, Birgit Heese, Bruna A. Holanda, Jošt V. Lavrič, Scot T. Martin, Jing Ming, Mira L. Pöhlker, Nina Ruckteschler, Hang Su, Yaqiang Wang, Qiaoqiao Wang, Zhibin Wang, Bettina Weber, Stefan Wolff, Paulo Artaxo, Ulrich Pöschl, Meinrat O. Andreae, and Christopher Pöhlker
Atmos. Chem. Phys., 18, 10055–10088, https://doi.org/10.5194/acp-18-10055-2018, https://doi.org/10.5194/acp-18-10055-2018, 2018
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This study presents multiple years of aerosol coarse mode observations at the remote ATTO site in the Amazon Basin. The results are discussed in light of the frequent and episodic long-range transport of Saharan dust plumes in the early wet season as well as the persistent background bioaerosol cycling in the rain forest ecosystem. This work provides a solid basis for future studies on the dynamic coarse mode aerosol cycling and its biogeochemical relevance in the Amazon.
Martin Kunz, Jost V. Lavric, Christoph Gerbig, Pieter Tans, Don Neff, Christine Hummelgård, Hans Martin, Henrik Rödjegård, Burkhard Wrenger, and Martin Heimann
Atmos. Meas. Tech., 11, 1833–1849, https://doi.org/10.5194/amt-11-1833-2018, https://doi.org/10.5194/amt-11-1833-2018, 2018
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Unmanned aircraft could provide a cost-effective way to close gaps in the observation of the carbon cycle, provided that small yet accurate analysers are available. We have developed a COmpact Carbon dioxide analyser for Airborne Platforms (COCAP). During validation of its CO2 measurements in simulated and real flights we found a measurement error of 1.2 μmol mol−1 or better with no indication of bias. COCAP is a self-contained package that has proven well suited for operation on board UASs.
Peter Bergamaschi, Ute Karstens, Alistair J. Manning, Marielle Saunois, Aki Tsuruta, Antoine Berchet, Alexander T. Vermeulen, Tim Arnold, Greet Janssens-Maenhout, Samuel Hammer, Ingeborg Levin, Martina Schmidt, Michel Ramonet, Morgan Lopez, Jost Lavric, Tuula Aalto, Huilin Chen, Dietrich G. Feist, Christoph Gerbig, László Haszpra, Ove Hermansen, Giovanni Manca, John Moncrieff, Frank Meinhardt, Jaroslaw Necki, Michal Galkowski, Simon O'Doherty, Nina Paramonova, Hubertus A. Scheeren, Martin Steinbacher, and Ed Dlugokencky
Atmos. Chem. Phys., 18, 901–920, https://doi.org/10.5194/acp-18-901-2018, https://doi.org/10.5194/acp-18-901-2018, 2018
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European methane (CH4) emissions are estimated for 2006–2012 using atmospheric in situ measurements from 18 European monitoring stations and 7 different inverse models. Our analysis highlights the potential significant contribution of natural emissions from wetlands (including peatlands and wet soils) to the total European emissions. The top-down estimates of total EU-28 CH4 emissions are broadly consistent with the sum of reported anthropogenic CH4 emissions and the estimated natural emissions.
Eugene F. Mikhailov, Svetlana Mironova, Gregory Mironov, Sergey Vlasenko, Alexey Panov, Xuguang Chi, David Walter, Samara Carbone, Paulo Artaxo, Martin Heimann, Jost Lavric, Ulrich Pöschl, and Meinrat O. Andreae
Atmos. Chem. Phys., 17, 14365–14392, https://doi.org/10.5194/acp-17-14365-2017, https://doi.org/10.5194/acp-17-14365-2017, 2017
Friedemann Reum, Christoph Gerbig, Jost V. Lavric, Chris W. Rella, and Mathias Göckede
Atmos. Meas. Tech. Discuss., https://doi.org/10.5194/amt-2017-174, https://doi.org/10.5194/amt-2017-174, 2017
Revised manuscript not accepted
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High-accuracy observations of atmospheric CO2 and CH4 levels, which are vital for quantifying sources and sinks of these gases, are often obtained using Picarro greenhouse gas analyzers. These require a correction for the effects of water vapor. We report biases in CO2 and CH4 levels obtained using the traditional water correction for Picarro analyzers related to pressure changes in the optical cavity and mainly affecting measurements at low water vapor mole fractions, and how to correct them.
Rona L. Thompson, Motoki Sasakawa, Toshinobu Machida, Tuula Aalto, Doug Worthy, Jost V. Lavric, Cathrine Lund Myhre, and Andreas Stohl
Atmos. Chem. Phys., 17, 3553–3572, https://doi.org/10.5194/acp-17-3553-2017, https://doi.org/10.5194/acp-17-3553-2017, 2017
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Methane (CH4) fluxes were estimated for the high northern latitudes for 2005–2013 based on observations of atmospheric CH4 mixing ratios. Methane fluxes were found to be higher than prior estimates in northern Eurasia and Canada, especially in the Western Siberian Lowlands and the Canadian province Alberta. Significant inter-annual variations in the fluxes were found as well as a small positive trend. In Canada, the trend may be related to an increase in soil temperature over the study period.
Mira L. Pöhlker, Christopher Pöhlker, Florian Ditas, Thomas Klimach, Isabella Hrabe de Angelis, Alessandro Araújo, Joel Brito, Samara Carbone, Yafang Cheng, Xuguang Chi, Reiner Ditz, Sachin S. Gunthe, Jürgen Kesselmeier, Tobias Könemann, Jošt V. Lavrič, Scot T. Martin, Eugene Mikhailov, Daniel Moran-Zuloaga, Diana Rose, Jorge Saturno, Hang Su, Ryan Thalman, David Walter, Jian Wang, Stefan Wolff, Henrique M. J. Barbosa, Paulo Artaxo, Meinrat O. Andreae, and Ulrich Pöschl
Atmos. Chem. Phys., 16, 15709–15740, https://doi.org/10.5194/acp-16-15709-2016, https://doi.org/10.5194/acp-16-15709-2016, 2016
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The paper presents a systematic characterization of cloud condensation nuclei (CCN) concentration in the central Amazonian atmosphere. Our results show that the CCN population in this globally important ecosystem follows a pollution-related seasonal cycle, in which it mainly depends on changes in total aerosol size distribution and to a minor extent in the aerosol chemical composition. Our results allow an efficient modeling and prediction of the CCN population based on a novel approach.
Qiaoqiao Wang, Jorge Saturno, Xuguang Chi, David Walter, Jost V. Lavric, Daniel Moran-Zuloaga, Florian Ditas, Christopher Pöhlker, Joel Brito, Samara Carbone, Paulo Artaxo, and Meinrat O. Andreae
Atmos. Chem. Phys., 16, 14775–14794, https://doi.org/10.5194/acp-16-14775-2016, https://doi.org/10.5194/acp-16-14775-2016, 2016
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We use a chemical transport model to interpret observed aerosol concentrations and absorption over the Amazon Basin during the wet season. With daily temporal resolution for open fire emissions and modified aerosol optical properties, our model successfully captures the observed variation in aerosol concentrations and absorption over the Amazon Basin. The simulation indicates the important influence of open fire mainly from northern South America and from northern Africa in the wet season.
Martin Dahl, Diana Deyanova, Silvia Gütschow, Maria E. Asplund, Liberatus D. Lyimo, Ventzislav Karamfilov, Rui Santos, Mats Björk, and Martin Gullström
Biogeosciences Discuss., https://doi.org/10.5194/bg-2016-137, https://doi.org/10.5194/bg-2016-137, 2016
Manuscript not accepted for further review
M. O. Andreae, O. C. Acevedo, A. Araùjo, P. Artaxo, C. G. G. Barbosa, H. M. J. Barbosa, J. Brito, S. Carbone, X. Chi, B. B. L. Cintra, N. F. da Silva, N. L. Dias, C. Q. Dias-Júnior, F. Ditas, R. Ditz, A. F. L. Godoi, R. H. M. Godoi, M. Heimann, T. Hoffmann, J. Kesselmeier, T. Könemann, M. L. Krüger, J. V. Lavric, A. O. Manzi, A. P. Lopes, D. L. Martins, E. F. Mikhailov, D. Moran-Zuloaga, B. W. Nelson, A. C. Nölscher, D. Santos Nogueira, M. T. F. Piedade, C. Pöhlker, U. Pöschl, C. A. Quesada, L. V. Rizzo, C.-U. Ro, N. Ruckteschler, L. D. A. Sá, M. de Oliveira Sá, C. B. Sales, R. M. N. dos Santos, J. Saturno, J. Schöngart, M. Sörgel, C. M. de Souza, R. A. F. de Souza, H. Su, N. Targhetta, J. Tóta, I. Trebs, S. Trumbore, A. van Eijck, D. Walter, Z. Wang, B. Weber, J. Williams, J. Winderlich, F. Wittmann, S. Wolff, and A. M. Yáñez-Serrano
Atmos. Chem. Phys., 15, 10723–10776, https://doi.org/10.5194/acp-15-10723-2015, https://doi.org/10.5194/acp-15-10723-2015, 2015
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This paper describes the Amazon Tall Tower Observatory (ATTO), a new atmosphere-biosphere observatory located in the remote Amazon Basin. It presents results from ecosystem ecology, meteorology, trace gas, and aerosol measurements collected at the ATTO site during the first 3 years of operation.
A. Berchet, I. Pison, F. Chevallier, J.-D. Paris, P. Bousquet, J.-L. Bonne, M. Y. Arshinov, B. D. Belan, C. Cressot, D. K. Davydov, E. J. Dlugokencky, A. V. Fofonov, A. Galanin, J. Lavrič, T. Machida, R. Parker, M. Sasakawa, R. Spahni, B. D. Stocker, and J. Winderlich
Biogeosciences, 12, 5393–5414, https://doi.org/10.5194/bg-12-5393-2015, https://doi.org/10.5194/bg-12-5393-2015, 2015
C. Lauritano, M. Ruocco, E. Dattolo, M. C. Buia, J. Silva, R. Santos, I. Olivé, M. M. Costa, and G. Procaccini
Biogeosciences, 12, 4185–4194, https://doi.org/10.5194/bg-12-4185-2015, https://doi.org/10.5194/bg-12-4185-2015, 2015
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The effects of two marine volcanic vents, utilized as proxy of ocean acidification and global changes, are studied at molecular level in P. oceanica (seagrass). Stress-related genes (antioxidants and HSP) were differently activated in the two sites, at comparable CO2 levels. Metal detoxification genes were mostly down-regulated. This suggests that plants face different types of stressors and that factors other than CO2 and acidification can cause stress to marine organisms near volcanic vents.
E. J. Morgan, J. V. Lavrič, T. Seifert, T. Chicoine, A. Day, J. Gomez, R. Logan, J. Sack, T. Shuuya, E. G. Uushona, K. Vincent, U. Schultz, E.-G. Brunke, C. Labuschagne, R. L. Thompson, S. Schmidt, A. C. Manning, and M. Heimann
Atmos. Meas. Tech., 8, 2233–2250, https://doi.org/10.5194/amt-8-2233-2015, https://doi.org/10.5194/amt-8-2233-2015, 2015
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We describe the analytical techniques used in the creation of a new background site for continuous measurements of greenhouse gases, carbon monoxide, and atmospheric oxygen in the Namib Desert. The measurement system is semi-automated and optimized for operation in a remote locale. Measurement uncertainties, gas handling, calibration schemes, drift corrections, and instrument performance are discussed.
I. Weinberg, E. Bahlmann, T. Eckhardt, W. Michaelis, and R. Seifert
Biogeosciences, 12, 1697–1711, https://doi.org/10.5194/bg-12-1697-2015, https://doi.org/10.5194/bg-12-1697-2015, 2015
B. Martínez-Crego, I. Olivé, and R. Santos
Biogeosciences, 11, 7237–7249, https://doi.org/10.5194/bg-11-7237-2014, https://doi.org/10.5194/bg-11-7237-2014, 2014
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We found that the multi-level meadow response to nutrient enrichment was faster and stronger than to CO2 enrichment, being both mediated by shifts in leaf epiphyte or sediment communities. Our findings highlight the relevance of integrative approaches considering not only species interactions and connections between organization levels, but also the effect of interactive stressors, to anticipate the evolution of seagrass meadows in the near future and to endorse conservation efforts.
A. Berchet, I. Pison, F. Chevallier, P. Bousquet, S. Conil, M. Geever, T. Laurila, J. Lavrič, M. Lopez, J. Moncrieff, J. Necki, M. Ramonet, M. Schmidt, M. Steinbacher, and J. Tarniewicz
Atmos. Chem. Phys., 13, 7115–7132, https://doi.org/10.5194/acp-13-7115-2013, https://doi.org/10.5194/acp-13-7115-2013, 2013
Related subject area
Biogeochemistry: Coastal Ocean
Technical note: Measurements and data analysis of sediment–water oxygen flux using a new dual-optode eddy covariance instrument
The impact of intertidal areas on the carbonate system of the southern North Sea
The recent state and variability of the carbonate system of the Canadian Arctic Archipelago and adjacent basins in the context of ocean acidification
A regional hindcast model simulating ecosystem dynamics, inorganic carbon chemistry, and ocean acidification in the Gulf of Alaska
Relative impacts of global changes and regional watershed changes on the inorganic carbon balance of the Chesapeake Bay
Decoupling of ΔO2∕Ar and particulate organic carbon dynamics in nearshore surface ocean waters
Wind-driven stratification patterns and dissolved oxygen depletion off the Changjiang (Yangtze) Estuary
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Quantifying the contributions of riverine vs. oceanic nitrogen to hypoxia in the East China Sea
Macroalgal metabolism and lateral carbon flows can create significant carbon sinks
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Acrylic acid and related dimethylated sulfur compounds in the Bohai and Yellow seas during summer and winter
Using 226Ra and 228Ra isotopes to distinguish water mass distribution in the Canadian Arctic Archipelago
Fe(II) stability in coastal seawater during experiments in Patagonia, Svalbard, and Gran Canaria
Distribution and behaviour of dissolved selenium in tropical peatland-draining rivers and estuaries of Malaysia
Factors controlling plankton productivity, particulate matter stoichiometry, and export fluxin the coastal upwelling system off Peru
Anomalies in the carbonate system of Red Sea coastal habitats
Linking climatic-driven iron toxicity and water stress to a massive mangrove dieback
Tracing terrestrial versus marine sources of dissolved organic carbon in a coastal bay using stable carbon isotopes
Major role of ammonia-oxidizing bacteria in N2O production in the Pearl River estuary
Long-term trends in pH in Japanese coastal seawater
Nitric oxide (NO) in the Bohai Sea and the Yellow Sea
Net heterotrophy and carbonate dissolution in two subtropical seagrass meadows
Shifts in dimethylated sulfur concentrations and microbiome composition in the red-tide causing dinoflagellate Alexandrium minutum during a simulated marine heatwave
Controls on redox-sensitive trace metals in the Mauritanian oxygen minimum zone
Seasonal and spatial patterns of primary production in a high-latitude fjord affected by Greenland Ice Sheet run-off
Spring net community production and its coupling with the CO2 dynamics in the surface water of the northern Gulf of Mexico
Distribution, seasonality, and fluxes of dissolved organic matter in the Pearl River (Zhujiang) estuary, China
Dissolved organic matter at the fluvial–marine transition in the Laptev Sea using in situ data and ocean colour remote sensing
Collection of large benthic invertebrates in sediment traps in the Amundsen Sea, Antarctica
Patterns and drivers of dimethylsulfide concentration in the northeast subarctic Pacific across multiple spatial and temporal scales
Patterns of suspended particulate matter across the continental margin in the Canadian Beaufort Sea during summer
Reduced phosphorus loads from the Loire and Vilaine rivers were accompanied by increasing eutrophication in the Vilaine Bay (south Brittany, France)
Carbon cycling in the North American coastal ocean: a synthesis
Contrasting effects of acidification and warming on dimethylsulfide concentrations during a temperate estuarine fall bloom mesocosm experiment
Interannual variability in the summer dissolved organic matter inventory of the North Sea: implications for the continental shelf pump
Remineralization rate of terrestrial DOC as inferred from CO2 supersaturated coastal waters
High-frequency variability of CO2 in Grand Passage, Bay of Fundy, Nova Scotia
Sedimentary alkalinity generation and long-term alkalinity development in the Baltic Sea
Warming effect on nitrogen fixation in Mediterranean macrophyte sediments
High denitrification and anaerobic ammonium oxidation contributes to net nitrogen loss in a seagrass ecosystem in the central Red Sea
Turbulence measurements suggest high rates of new production over the shelf edge in the northeastern North Sea during summer
On biotic and abiotic drivers of the microphytobenthos seasonal cycle in a temperate intertidal mudflat: a modelling study
Effects of elevated CO2 and phytoplankton-derived organic matter on the metabolism of bacterial communities from coastal waters
Distribution and cycling of terrigenous dissolved organic carbon in peatland-draining rivers and coastal waters of Sarawak, Borneo
Biogenic silica production and diatom dynamics in the Svalbard region during spring
The distinct roles of two intertidal foraminiferal species in phytodetrital carbon and nitrogen fluxes – results from laboratory feeding experiments
Contextualizing time-series data: quantification of short-term regional variability in the San Pedro Channel using high-resolution in situ glider data
Nitrogen and oxygen availabilities control water column nitrous oxide production during seasonal anoxia in the Chesapeake Bay
Impacts of anthropogenic inputs on hypoxia and oxygen dynamics in the Pearl River estuary
Markus Huettel, Peter Berg, and Alireza Merikhi
Biogeosciences, 17, 4459–4476, https://doi.org/10.5194/bg-17-4459-2020, https://doi.org/10.5194/bg-17-4459-2020, 2020
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Oxygen fluxes are a valued proxy for organic carbon production and mineralization at the seafloor. These fluxes can be measured non-invasively with the aquatic eddy covariance instrument, but the fast, fragile oxygen sensor it uses often causes questionable flux data. We developed a dual-O2-optode instrument and data evaluation method that allow improved flux measurements. Deployments over carbonate sands in the shallow shelf demonstrate that the instrument can produce reliable oxygen flux data.
Fabian Schwichtenberg, Johannes Pätsch, Michael Ernst Böttcher, Helmuth Thomas, Vera Winde, and Kay-Christian Emeis
Biogeosciences, 17, 4223–4245, https://doi.org/10.5194/bg-17-4223-2020, https://doi.org/10.5194/bg-17-4223-2020, 2020
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Ocean acidification has a range of potentially harmful consequences for marine organisms. It is related to total alkalinity (TA) mainly produced in oxygen-poor situations like sediments in tidal flats. TA reduces the sensitivity of a water body to acidification. The decomposition of organic material and subsequent TA release in the tidal areas of the North Sea (Wadden Sea) is responsible for reduced acidification in the southern North Sea. This is shown with the results of an ecosystem model.
Alexis Beaupré-Laperrière, Alfonso Mucci, and Helmuth Thomas
Biogeosciences, 17, 3923–3942, https://doi.org/10.5194/bg-17-3923-2020, https://doi.org/10.5194/bg-17-3923-2020, 2020
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Ocean acidification is the process by which the oceans are changing due to carbon dioxide emissions from human activities. Studying this process in the Arctic Ocean is essential as this ocean and its ecosystems are more vulnerable to the effects of acidification. Water chemistry measurements made in recent years show that waters in and around the Canadian Arctic Archipelago are considerably affected by this process and show dynamic conditions that might have an impact on local marine organisms.
Claudine Hauri, Cristina Schultz, Katherine Hedstrom, Seth Danielson, Brita Irving, Scott C. Doney, Raphael Dussin, Enrique N. Curchitser, David F. Hill, and Charles A. Stock
Biogeosciences, 17, 3837–3857, https://doi.org/10.5194/bg-17-3837-2020, https://doi.org/10.5194/bg-17-3837-2020, 2020
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The coastal ecosystem of the Gulf of Alaska (GOA) is especially vulnerable to the effects of ocean acidification and climate change. To improve our conceptual understanding of the system, we developed a new regional biogeochemical model setup for the GOA. Model output suggests that bottom water is seasonally high in CO2 between June and January. Such extensive periods of reoccurring high CO2 may be harmful to ocean acidification-sensitive organisms.
Pierre St-Laurent, Marjorie A. M. Friedrichs, Raymond G. Najjar, Elizabeth H. Shadwick, Hanqin Tian, and Yuanzhi Yao
Biogeosciences, 17, 3779–3796, https://doi.org/10.5194/bg-17-3779-2020, https://doi.org/10.5194/bg-17-3779-2020, 2020
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Over the past century, estuaries have experienced global (atmospheric CO2 concentrations and temperature) and regional changes (river inputs, land use), but their relative impact remains poorly known. In the Chesapeake Bay, we find that global and regional changes have worked together to enhance how much atmospheric CO2 is taken up by the estuary. The increased uptake is roughly equally due to the global and regional changes, providing crucial perspective for managers of the bay's watershed.
Sarah Z. Rosengard, Robert W. Izett, William J. Burt, Nina Schuback, and Philippe D. Tortell
Biogeosciences, 17, 3277–3298, https://doi.org/10.5194/bg-17-3277-2020, https://doi.org/10.5194/bg-17-3277-2020, 2020
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Net community production sets the maximum quantity of phytoplankton carbon available for the marine food web and longer-term storage in the deep ocean. We compared two approaches to estimate this critical variable from autonomous measurements of mixed-layer dissolved oxygen and particulate organic carbon, observing a significant discrepancy between estimates in an upwelling zone near the Oregon coast. We use this discrepancy to assess the fate of organic carbon produced in the mixed layer.
Taavi Liblik, Yijing Wu, Daidu Fan, and Dinghui Shang
Biogeosciences, 17, 2875–2895, https://doi.org/10.5194/bg-17-2875-2020, https://doi.org/10.5194/bg-17-2875-2020, 2020
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Multiple factors have been accused of triggering coastal hypoxia off the Changjiang Estuary. In situ observations, remote sensing and numerical simulation data were used to study dissolved oxygen depletion in the area. Oxygen distributions can be explained by wind forcing and river discharge, as well as concurrent features in surface and deep layer circulation. If summer monsoon prevails, hypoxia more likely occurs in the north while hypoxia in the south appears if the summer monsoon is weaker.
Niels A. G. M. van Helmond, Elizabeth K. Robertson, Daniel J. Conley, Martijn Hermans, Christoph Humborg, L. Joëlle Kubeneck, Wytze K. Lenstra, and Caroline P. Slomp
Biogeosciences, 17, 2745–2766, https://doi.org/10.5194/bg-17-2745-2020, https://doi.org/10.5194/bg-17-2745-2020, 2020
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We studied the removal of phosphorus (P) and nitrogen (N) in the eutrophic Stockholm archipelago (SA). High sedimentation rates and sediment P contents lead to high P burial. Benthic denitrification is the primary nitrate-reducing pathway. Together, these mechanisms limit P and N transport to the open Baltic Sea. We expect that further nutrient load reduction will contribute to recovery of the SA from low-oxygen conditions and that the sediments will continue to remove part of the P and N loads.
Fabian Große, Katja Fennel, Haiyan Zhang, and Arnaud Laurent
Biogeosciences, 17, 2701–2714, https://doi.org/10.5194/bg-17-2701-2020, https://doi.org/10.5194/bg-17-2701-2020, 2020
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In the East China Sea, hypoxia occurs frequently from spring to fall due to high primary production and subsequent decomposition of organic matter. Nitrogen inputs from the Changjiang and the open ocean have been suggested to contribute to hypoxia formation. We used a numerical modelling approach to quantify the relative contributions of these nitrogen sources. We found that the Changjiang dominates, which suggests that nitrogen management in the watershed would improve oxygen conditions.
Kenta Watanabe, Goro Yoshida, Masakazu Hori, Yu Umezawa, Hirotada Moki, and Tomohiro Kuwae
Biogeosciences, 17, 2425–2440, https://doi.org/10.5194/bg-17-2425-2020, https://doi.org/10.5194/bg-17-2425-2020, 2020
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Macroalgal beds are among the vegetated coastal ecosystems that take up atmospheric CO2. We investigated the relationships between macroalgal metabolism and inorganic and organic carbon fluxes in a temperate macroalgal bed during the productive time of year. The macroalgal metabolism formed water with low CO2 and high dissolved organic carbon concentrations that was then exported offshore. This export process potentially enhances CO2 uptake in and around macroalgal beds.
Claudia Frey, Hermann W. Bange, Eric P. Achterberg, Amal Jayakumar, Carolin R. Löscher, Damian L. Arévalo-Martínez, Elizabeth León-Palmero, Mingshuang Sun, Xin Sun, Ruifang C. Xie, Sergey Oleynik, and Bess B. Ward
Biogeosciences, 17, 2263–2287, https://doi.org/10.5194/bg-17-2263-2020, https://doi.org/10.5194/bg-17-2263-2020, 2020
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The production of N2O via nitrification and denitrification associated with low-O2 waters is a major source of oceanic N2O. We investigated the regulation and dynamics of these processes with respect to O2 and organic matter inputs. The transcription of the key nitrification gene amoA rapidly responded to changes in O2 and strongly correlated with N2O production rates. N2O production by denitrification was clearly stimulated by organic carbon, implying that its supply controls N2O production.
Xi Wu, Pei-Feng Li, Hong-Hai Zhang, Mao-Xu Zhu, Chun-Ying Liu, and Gui-Peng Yang
Biogeosciences, 17, 1991–2008, https://doi.org/10.5194/bg-17-1991-2020, https://doi.org/10.5194/bg-17-1991-2020, 2020
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Acrylic acid (AA) exhibited obvious spatial and temporal variations in the Bohai and Yellow seas. Strong biological production and abundant terrestrial inputs led to high AA in summer. Extremely high AA in sediments might result from the cleavage of intracellular DMSP and reduce bacterial metabolism. Degradation experiments of AA and DMSP proved other sources of AA and microbial consumption to be the key removal source. This study provided insightful information on the sulfur cycle these seas.
Chantal Mears, Helmuth Thomas, Paul B. Henderson, Matthew A. Charette, Hugh MacIntyre, Frank Dehairs, Christophe Monnin, and Alfonso Mucci
Biogeosciences Discuss., https://doi.org/10.5194/bg-2020-78, https://doi.org/10.5194/bg-2020-78, 2020
Revised manuscript accepted for BG
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Major research initiatives have been undertaken within the Arctic Ocean, highlighting this region's global importance and vulnerability to climate change. In 2015 the international GEOTRACES program addressed this importance by devoting intense research activities to the Arctic Ocean. Among various tracers, we use Radium and carbonate system data to shed light on functioning and vulnerability of the hydrographic regime of the Canadian Arctic Archipelago, bridging Pacific and Atlantic Oceans.
Mark J. Hopwood, Carolina Santana-González, Julian Gallego-Urrea, Nicolas Sanchez, Eric P. Achterberg, Murat V. Ardelan, Martha Gledhill, Melchor González-Dávila, Linn Hoffmann, Øystein Leiknes, Juana Magdalena Santana-Casiano, Tatiana M. Tsagaraki, and David Turner
Biogeosciences, 17, 1327–1342, https://doi.org/10.5194/bg-17-1327-2020, https://doi.org/10.5194/bg-17-1327-2020, 2020
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Fe is an essential micronutrient. Fe(III)-organic species are thought to account for > 99 % of dissolved Fe in seawater. Here we quantified Fe(II) during experiments in Svalbard, Gran Canaria, and Patagonia. Fe(II) was always a measurable fraction of dissolved Fe up to 65 %. Furthermore, when Fe(II) was allowed to decay in the dark, it remained present longer than predicted by kinetic equations, suggesting that Fe(II) is a more important fraction of dissolved Fe in seawater than widely recognized.
Yan Chang, Moritz Müller, Ying Wu, Shan Jiang, Wan Wan Cao, Jian Guo Qu, Jing Ling Ren, Xiao Na Wang, En Ming Rao, Xiao Lu Wang, Aazani Mujahid, Mohd Fakharuddin Muhamad, Edwin Sien Aun Sia, Faddrine Holt Ajon Jang, and Jing Zhang
Biogeosciences, 17, 1133–1145, https://doi.org/10.5194/bg-17-1133-2020, https://doi.org/10.5194/bg-17-1133-2020, 2020
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Selenium (Se) is an essential micronutrient for many organisms. Our knowledge of dissolved Se biogeochemical cycling in tropical estuaries is limited. We have found that dissolved organic Se (DOSe) was the major speciation in the peat-draining rivers and estuaries. The DOSe fractions may be associated with high molecular weight peatland-derived carbon compounds and may photodegrade to more bioavailable forms once transported to oligotrophic coastal water, where they may promote productivity.
Lennart Thomas Bach, Allanah Joy Paul, Tim Boxhammer, Elisabeth von der Esch, Michelle Graco, Kai Georg Schulz, Eric Achterberg, Paulina Aguayo, Javier Aristegui, Patrizia Ayon, Isabel Banos, Avy Bernales, Anne Sophie Boegeholz, Francisco Chavez, Shao-Min Chen, Kristin Doering, Alba Filella, Martin Fischer, Patricia Grasse, Mathias Haunost, Jan Hennke, Nauzet Hernandez-Hernandez, Mark Hopwood, Maricarmen Igarza, Verena Kalter, Leila Kittu, Peter Kohnert, Jesus Ledesma, Christian Lieberum, Silke Lischka, Carolin Loescher, Andrea Ludwig, Ursula Mendoza, Jana Meyer, Judith Meyer, Fabrizio Minutolo, Joaquin Ortiz Cortes, Jonna Piiparinen, Claudia Sforna, Kristian Spilling, Sonia Sanchez, Carsten Spisla, Michael Sswat, Mabel Zavala Moreira, and Ulf Riebesell
Biogeosciences Discuss., https://doi.org/10.5194/bg-2020-35, https://doi.org/10.5194/bg-2020-35, 2020
Revised manuscript accepted for BG
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The eastern boundary upwelling system off Peru is among the most productive ecosystems in the oceans but the factors that control its functioning are poorly constrained. Here we used mesocosms, moored ~6 km offshore Peru, to investigate how processes in plankton communities drive key biogeochemical processes. We show that nutrient and light co-limitation keep productivity and export at a remarkably constant level while stoichiometry changes strongly with shifts in plankton community structure.
Kimberlee Baldry, Vincent Saderne, Daniel C. McCorkle, James H. Churchill, Susana Agusti, and Carlos M. Duarte
Biogeosciences, 17, 423–439, https://doi.org/10.5194/bg-17-423-2020, https://doi.org/10.5194/bg-17-423-2020, 2020
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The carbon cycling of coastal ecosystems over large spatial scales is not well measured relative to the open ocean. In this study we measure the carbonate system in the three habitats, to measure ecosystem-driven changes compared to offshore waters. We find (1) 70 % of seagrass meadows and mangrove forests show large ecosystem-driven changes, and (2) mangrove forests show strong and consistent trends over large scales, while seagrass meadows display more variability.
James Z. Sippo, Isaac R. Santos, Christian J. Sanders, Patricia Gadd, Quan Hua, Catherine Lovelock, Nadia S. Santini, Scott G. Johnston, Yota Harada, Gloria Reithmeir, and Damien T. Maher
Biogeosciences Discuss., https://doi.org/10.5194/bg-2019-478, https://doi.org/10.5194/bg-2019-478, 2020
Revised manuscript accepted for BG
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In 2015/2016, a massive mangrove dieback event occurred along ~ 1000 km of coastline in Australia. Multiple lines of evidence from climate data, wood and sediment samples suggest low water availability within the dead mangrove forest. Wood and sediments also reveal a large increase in iron concentrations in mangrove sediments during the dieback. This study support the hypothesis that the forest dieback was associated with low water availability and iron toxicity driven by a strong ENSO event.
Shin-Ah Lee, Tae-Hoon Kim, and Guebuem Kim
Biogeosciences, 17, 135–144, https://doi.org/10.5194/bg-17-135-2020, https://doi.org/10.5194/bg-17-135-2020, 2020
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We differentiate between sources of dissolved organic matter (DOM) (terrestrial, marine autochthonous production, and artificial island and seawater interaction) in coastal bay waters surrounded by large cities using multiple DOM tracers, including dissolved organic carbon (DOC) and nitrogen (DON), stable carbon isotopes, fluorescent DOM, and the DOC/DON ratio.
Li Ma, Hua Lin, Xiabing Xie, Minhan Dai, and Yao Zhang
Biogeosciences, 16, 4765–4781, https://doi.org/10.5194/bg-16-4765-2019, https://doi.org/10.5194/bg-16-4765-2019, 2019
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The major microbial process producing N2O in estuarine ecosystems remains controversial. Combining the concentrations and isotopic compositions of N2O, distributions and transcript levels of ammonia-oxidizing bacterial and archaeal amoA and denitrifier nirS genes, and in situ incubation estimates of nitrification rates and N2O production rates, we clarified that ammonia-oxidizing bacteria contributed the major part in N2O production in the upper Pearl River estuary despite their low abundance.
Miho Ishizu, Yasumasa Miyazawa, Tomohiko Tsunoda, and Tsuneo Ono
Biogeosciences, 16, 4747–4763, https://doi.org/10.5194/bg-16-4747-2019, https://doi.org/10.5194/bg-16-4747-2019, 2019
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Using water quality data collected at 289 monitoring sites as part of the Water Pollution Control Program, we evaluated the long-term trends of pH in Japanese coastal seawater at ambient temperature from 1978 to 2009. We found that the annual maximum pH, which generally represents the pH of surface waters in winter, had decreased at 75 % of the sites, but had increased at the remaining sites. The annual maximum pH decreased at an average rate of −0.0024 yr−1, with relatively large deviations.
Ye Tian, Chao Xue, Chun-Ying Liu, Gui-Peng Yang, Pei-Feng Li, Wei-Hua Feng, and Hermann W. Bange
Biogeosciences, 16, 4485–4496, https://doi.org/10.5194/bg-16-4485-2019, https://doi.org/10.5194/bg-16-4485-2019, 2019
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Nitric oxide (NO) seems to be widespread, with different functions in the marine ecosystem, but we know little about it. Concentrations of NO were in a range from below the limit of detection to 616 pmol L−1 at the surface and 482 pmol L−1 at the bottom of the Bohai and Yellow seas. The study region was a source of atmospheric NO. Net NO sea-to-air fluxes were much lower than NO photoproduction rates, implying that the NO produced in the mixed layer was rapidly consumed before entering the air.
Bryce R. Van Dam, Christian Lopes, Christopher L. Osburn, and James W. Fourqurean
Biogeosciences, 16, 4411–4428, https://doi.org/10.5194/bg-16-4411-2019, https://doi.org/10.5194/bg-16-4411-2019, 2019
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We report on direct measurements of net ecosystem productivity (NEP) and net ecosystem calcification (NEC) in a Florida Bay seagrass ecosystem. We found notable differences between our carbon-based NEP and similar determinations made using oxygen. Over the study period, both NEP and NEC were negative, revealing that these sites are net heterotrophic and have dissolved CaCO3. Our findings point to sediments maintaining negative NEP and NEC despite high seagrass above-ground primary production.
Elisabeth Deschaseaux, James O'Brien, Nachshon Siboni, Katherina Petrou, and Justin R. Seymour
Biogeosciences, 16, 4377–4391, https://doi.org/10.5194/bg-16-4377-2019, https://doi.org/10.5194/bg-16-4377-2019, 2019
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Here we report that abrupt increases in temperature–simulating marine heatwaves might have the potential to shape the physiological state and biogenic sulfur production in microalgae involved in harmful algal blooms. Changes in physiology and biochemistry seem to trigger a shift in the bacteria community associated with these microalgae. Since microalgae and associated bacteria play an important role in climate regulation, this could have serious consequences for our future ocean and climate.
Insa Rapp, Christian Schlosser, Jan-Lukas Menzel Barraqueta, Bernhard Wenzel, Jan Lüdke, Jan Scholten, Beat Gasser, Patrick Reichert, Martha Gledhill, Marcus Dengler, and Eric P. Achterberg
Biogeosciences, 16, 4157–4182, https://doi.org/10.5194/bg-16-4157-2019, https://doi.org/10.5194/bg-16-4157-2019, 2019
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The availability of iron (Fe) affects phytoplankton growth in large parts of the ocean. Shelf sediments, particularly in oxygen minimum zones, are a major source of Fe and other essential micronutrients, such as cobalt (Co) and manganese (Mn). We observed enhanced concentrations of Fe, Co, and Mn corresponding with low oxygen concentrations along the Mauritanian shelf, indicating that the projected future decrease in oxygen concentrations may result in increases in Fe, Mn, and Co concentrations.
Johnna M. Holding, Stiig Markager, Thomas Juul-Pedersen, Maria L. Paulsen, Eva F. Møller, Lorenz Meire, and Mikael K. Sejr
Biogeosciences, 16, 3777–3792, https://doi.org/10.5194/bg-16-3777-2019, https://doi.org/10.5194/bg-16-3777-2019, 2019
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Phytoplankton sustain important fisheries along the coast of Greenland. However, climate change is causing severe melting of the Greenland Ice Sheet, and continued melting has the potential to alter fjord ecosystems. We investigate how freshwater from the ice sheet is impacting the environment of one fjord in northeast Greenland, causing a low production of phytoplankton. This fjord may be a model for how some fjord ecosystems will be altered following increased melting and glacial retreat.
Zong-Pei Jiang, Wei-Jun Cai, John Lehrter, Baoshan Chen, Zhangxian Ouyang, Chengfeng Le, Brian J. Roberts, Najid Hussain, Michael K. Scaboo, Junxiao Zhang, and Yuanyuan Xu
Biogeosciences, 16, 3507–3525, https://doi.org/10.5194/bg-16-3507-2019, https://doi.org/10.5194/bg-16-3507-2019, 2019
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The biological production and air–sea CO2 exchange in the surface water of the northern Gulf of Mexico during springtime were mainly controlled by the changes in the availability of light and nutrients during the river–ocean mixing process, with strong CO2 uptake occurring in the river plume regions. The slow air–sea CO2 exchange rate and buffering effect of the CO2 system may result in decoupling between biological production and CO2 flux.
Yang Li, Guisheng Song, Philippe Massicotte, Fangming Yang, Ruihuan Li, and Huixiang Xie
Biogeosciences, 16, 2751–2770, https://doi.org/10.5194/bg-16-2751-2019, https://doi.org/10.5194/bg-16-2751-2019, 2019
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We surveyed the spatial and seasonal variations and estimated the seaward export of DOM in the of Pearl River estuary (PRE), China. The concentration of DOM in this estuary decreases from land to sea but the change in its chemical character is marginal. The concentration and export of DOM are the lowest among the world's major rivers. Yet DOM delivered from the PRE is protein-rich and can be readily used by microbes, thereby exerting a potentially important impact on the local marine ecosystem.
Bennet Juhls, Pier Paul Overduin, Jens Hölemann, Martin Hieronymi, Atsushi Matsuoka, Birgit Heim, and Jürgen Fischer
Biogeosciences, 16, 2693–2713, https://doi.org/10.5194/bg-16-2693-2019, https://doi.org/10.5194/bg-16-2693-2019, 2019
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In this article, we present the variability and characteristics of dissolved organic matter at the fluvial–marine transition in the Laptev Sea from a unique dataset collected during 11 Arctic expeditions. We develop a new relationship between dissolved organic carbon (DOC) and coloured dissolved organic matter absorption, which is used to estimate surface water DOC concentration from space. We believe that our findings help current efforts to monitor ongoing changes in the Arctic carbon cycle.
Minkyoung Kim, Eun Jin Yang, Hyung Jeek Kim, Dongseon Kim, Tae-Wan Kim, Hyoung Sul La, SangHoon Lee, and Jeomshik Hwang
Biogeosciences, 16, 2683–2691, https://doi.org/10.5194/bg-16-2683-2019, https://doi.org/10.5194/bg-16-2683-2019, 2019
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Unexpectedly, in sediment traps deployed in the Antarctic Amundsen Sea to catch small sinking particles in the water, large benthic invertebrates such as long and slender worms, baby sea urchins, and small scallops were found. We suggest three hypotheses: lifting of these animals by anchor ice formation and subsequent transport by ice rafting, spending their juvenile period in a habitat underneath the sea ice and subsequent falling, or their active use of the current as a means of dispersal.
Alysia E. Herr, Ronald P. Kiene, John W. H. Dacey, and Philippe D. Tortell
Biogeosciences, 16, 1729–1754, https://doi.org/10.5194/bg-16-1729-2019, https://doi.org/10.5194/bg-16-1729-2019, 2019
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Dimethylsulfide (DMS) is an essential component of the global sulfur cycle and a major source of climate-influencing aerosols. We examine the drivers of DMS concentration gradients along the British Columbia shelf by comparing DMS measurements to environmental variables and biological rates. We further combine new and existing data sets to provide a new summertime DMS climatology for the northeast subarctic Pacific. Our results highlight the importance of phytoplankton taxonomy to DMS cycling.
Jens K. Ehn, Rick A. Reynolds, Dariusz Stramski, David Doxaran, Bruno Lansard, and Marcel Babin
Biogeosciences, 16, 1583–1605, https://doi.org/10.5194/bg-16-1583-2019, https://doi.org/10.5194/bg-16-1583-2019, 2019
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Beam attenuation at 660 nm and suspended particle matter (SPM) relationships were determined during the MALINA cruise in August 2009 to the Canadian Beaufort Sea in order to expand our knowledge of particle distributions in Arctic shelf seas. The relationship was then used to determine SPM distributions for four other expeditions to the region. SPM patterns on the shelf were explained by an interplay between wind forcing, river discharge, and melting sea ice that controls the circulation.
Widya Ratmaya, Dominique Soudant, Jordy Salmon-Monviola, Martin Plus, Nathalie Cochennec-Laureau, Evelyne Goubert, Françoise Andrieux-Loyer, Laurent Barillé, and Philippe Souchu
Biogeosciences, 16, 1361–1380, https://doi.org/10.5194/bg-16-1361-2019, https://doi.org/10.5194/bg-16-1361-2019, 2019
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This work reports the consequences of nutrient management strategy, an example from southwestern Europe focused mainly on P reduction. Upstream rivers reveal indices of recoveries following the significant diminution of P, while eutrophication continues to increase downstream, especially when N is the limiting factor. This long-term ecosystem-scale analysis provides more arguments for a dual-nutrient (N and P) management strategy to mitigate eutrophication along the freshwater–marine continuum.
Katja Fennel, Simone Alin, Leticia Barbero, Wiley Evans, Timothée Bourgeois, Sarah Cooley, John Dunne, Richard A. Feely, Jose Martin Hernandez-Ayon, Xinping Hu, Steven Lohrenz, Frank Muller-Karger, Raymond Najjar, Lisa Robbins, Elizabeth Shadwick, Samantha Siedlecki, Nadja Steiner, Adrienne Sutton, Daniela Turk, Penny Vlahos, and Zhaohui Aleck Wang
Biogeosciences, 16, 1281–1304, https://doi.org/10.5194/bg-16-1281-2019, https://doi.org/10.5194/bg-16-1281-2019, 2019
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We review and synthesize available information on coastal ocean carbon fluxes around North America (NA). There is overwhelming evidence, compiled and discussed here, that the NA coastal margins act as a sink. Our synthesis shows the great diversity in processes driving carbon fluxes in different coastal regions, highlights remaining gaps in observations and models, and discusses current and anticipated future trends with respect to carbon fluxes and acidification.
Robin Bénard, Maurice Levasseur, Michael Scarratt, Sonia Michaud, Michel Starr, Alfonso Mucci, Gustavo Ferreyra, Michel Gosselin, Jean-Éric Tremblay, Martine Lizotte, and Gui-Peng Yang
Biogeosciences, 16, 1167–1185, https://doi.org/10.5194/bg-16-1167-2019, https://doi.org/10.5194/bg-16-1167-2019, 2019
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We present rare data on the combined effects of acidification and warming on dimethylsulfide (DMS) during a mesocosm experiment. Our results show a reduction of DMS under elevated pCO2, but warming the mesocosms by 5 °C translated into a positive offset in concentrations of DMS over the whole range of pCO2 tested. Our results suggest that warming could mitigate the expected reduction in DMS production due to OA, even increasing the net DMS production, with possible repercussions for the climate.
Saisiri Chaichana, Tim Jickells, and Martin Johnson
Biogeosciences, 16, 1073–1096, https://doi.org/10.5194/bg-16-1073-2019, https://doi.org/10.5194/bg-16-1073-2019, 2019
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Organic molecules dissolved in the waters of coastal seas (DOM) are a potentially important vector for carbon transport and storage in the open ocean. DOM carbon and nitrogen concentrations from two consecutive summers in the North Sea show a strong pattern of concentrations decreasing away from land. We also observe significant differences between the years in both the DOM concentration and C : N ratios, suggesting that carbon export from shelf seas might be mediated by organic matter cycling.
Filippa Fransner, Agneta Fransson, Christoph Humborg, Erik Gustafsson, Letizia Tedesco, Robinson Hordoir, and Jonas Nycander
Biogeosciences, 16, 863–879, https://doi.org/10.5194/bg-16-863-2019, https://doi.org/10.5194/bg-16-863-2019, 2019
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Although rivers carry large amounts of organic material to the oceans, little is known about what fate it meets when it reaches the sea. In this study we are investigating the fate of the carbon in this organic matter by the use of a numerical model in combination with ship measurements from the northern Baltic Sea. Our results suggests that there is substantial remineralization taking place, transforming the organic carbon into CO2, which is released to the atmosphere.
Rachel M. Horwitz, Alex E. Hay, William J. Burt, Richard A. Cheel, Joseph Salisbury, and Helmuth Thomas
Biogeosciences, 16, 605–616, https://doi.org/10.5194/bg-16-605-2019, https://doi.org/10.5194/bg-16-605-2019, 2019
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High-frequency CO2 measurements are used to quantify the daily and tidal cycles of dissolved carbon in the Bay of Fundy – home to the world's largest tides. The oscillating tidal flows drive a net carbon transport, and these results suggest that previously unaccounted for tidal variation could substantially modulate the coastal ocean's response to global ocean acidification. Evaluating the impact of rising atmospheric CO2 on coastal systems requires understanding this short-term variability.
Erik Gustafsson, Mathilde Hagens, Xiaole Sun, Daniel C. Reed, Christoph Humborg, Caroline P. Slomp, and Bo G. Gustafsson
Biogeosciences, 16, 437–456, https://doi.org/10.5194/bg-16-437-2019, https://doi.org/10.5194/bg-16-437-2019, 2019
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This work highlights that iron (Fe) dynamics plays a key role in the release of alkalinity from sediments, as exemplified for the Baltic Sea. It furthermore demonstrates that burial of Fe sulfides should be included in alkalinity budgets of low-oxygen basins. The sedimentary alkalinity generation may undergo large changes depending on both organic matter loads and oxygen conditions. Enhanced release of alkalinity from the seafloor can increase the CO2 storage capacity of seawater.
Neus Garcias-Bonet, Raquel Vaquer-Sunyer, Carlos M. Duarte, and Núria Marbà
Biogeosciences, 16, 167–175, https://doi.org/10.5194/bg-16-167-2019, https://doi.org/10.5194/bg-16-167-2019, 2019
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We assess the impact of warming on nitrogen fixation in three key Mediterranean macrophytes by experimentally measuring sediment nitrogen fixation rates at current and projected seawater temperature by 2100 under a scenario of moderate greenhouse gas emissions. The temperature dependence of nitrogen fixation could potentially increase rates by 37 % by the end of the century, with important consequences for primary production in coastal ecosystems.
Neus Garcias-Bonet, Marco Fusi, Muhammad Ali, Dario R. Shaw, Pascal E. Saikaly, Daniele Daffonchio, and Carlos M. Duarte
Biogeosciences, 15, 7333–7346, https://doi.org/10.5194/bg-15-7333-2018, https://doi.org/10.5194/bg-15-7333-2018, 2018
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Nitrogen (N) loads are detrimental for coastal ecosystems. We measured the balance between N losses and gains in a Red Sea seagrass. The N loss was higher than N2 fixed, pointing out the importance of seagrasses in removing N from the system. N2 losses increased with temperature. Therefore, the forecasted warming could increase the N2 flux to the atmosphere, potentially impacting seagrass productivity and their capacity to mitigate climate change but also enhancing their potential N removal.
Jørgen Bendtsen and Katherine Richardson
Biogeosciences, 15, 7315–7332, https://doi.org/10.5194/bg-15-7315-2018, https://doi.org/10.5194/bg-15-7315-2018, 2018
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New production based on nutrients entering the well-lit surface layer is important for understanding marine ecosystems. Measurements of primary production and turbulence across the shelf edge in the northeastern portion of the North Sea show that new production is concentrated around the shelf-edge zone. The shelf-edge zone is, therefore, a major nutrient supplier to the productive surface layer and makes this area important for higher trophic levels such as zooplankton and fish.
Raphaël Savelli, Christine Dupuy, Laurent Barillé, Astrid Lerouxel, Katell Guizien, Anne Philippe, Pierrick Bocher, Pierre Polsenaere, and Vincent Le Fouest
Biogeosciences, 15, 7243–7271, https://doi.org/10.5194/bg-15-7243-2018, https://doi.org/10.5194/bg-15-7243-2018, 2018
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We simulate the benthic microalgae seasonal cycle on a temperate intertidal mudflat by combining a physical–biological coupled model with remotely sensed and in situ data. While optimal light and temperature conditions lead to a spring bloom, thermo-inhibition and grazing result in a summer depression of biomass. The model ability to infer mechanisms driving the seasonal cycle could open the door to the contribution of productive intertidal biofilms to the coastal carbon cycle.
Antonio Fuentes-Lema, Henar Sanleón-Bartolomé, Luis M. Lubián, and Cristina Sobrino
Biogeosciences, 15, 6927–6940, https://doi.org/10.5194/bg-15-6927-2018, https://doi.org/10.5194/bg-15-6927-2018, 2018
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In contrast to phytoplankton, ocean acidification's (OA's) effects on bacterioplankton are poorly understood. Microcosm experiments to assess bacterioplankton's response to organic matter obtained under current and future CO2 levels were performed. An analysis of bacterial abundance, production, respiration, viability and changes in DOM concentration showed that OA affects bacterial metabolism through changes in the organic matter more than directly affecting future CO2 concentration.
Patrick Martin, Nagur Cherukuru, Ashleen S. Y. Tan, Nivedita Sanwlani, Aazani Mujahid, and Moritz Müller
Biogeosciences, 15, 6847–6865, https://doi.org/10.5194/bg-15-6847-2018, https://doi.org/10.5194/bg-15-6847-2018, 2018
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The carbon cycle is a key control for the Earth's climate. Every year rivers deliver a lot of organic carbon to coastal seas, but we do not know what happens to this carbon, particularly in the tropics. We show that rivers in Borneo deliver carbon from peat swamps to the sea with at most minimal biological or chemical alteration in estuaries, but sunlight can rapidly oxidise this carbon to CO2. This means that south-east Asian seas are likely hotspots of terrestrial carbon decomposition.
Jeffrey W. Krause, Carlos M. Duarte, Israel A. Marquez, Philipp Assmy, Mar Fernández-Méndez, Ingrid Wiedmann, Paul Wassmann, Svein Kristiansen, and Susana Agustí
Biogeosciences, 15, 6503–6517, https://doi.org/10.5194/bg-15-6503-2018, https://doi.org/10.5194/bg-15-6503-2018, 2018
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Diatoms can dominate the Arctic Ocean spring bloom, the key annual event for regional food webs. Diatom growth requires silicon and this nutrient has been declining in the European Arctic. This study communicates an unprecedented combination of silicon-cycling measurements around Svalbard during the spring and shows that dissolved silicon can limit diatom production. These results suggest an important coupling of silicon and carbon cycling during the spring bloom in the European Arctic.
Julia Wukovits, Max Oberrauch, Annekatrin J. Enge, and Petra Heinz
Biogeosciences, 15, 6185–6198, https://doi.org/10.5194/bg-15-6185-2018, https://doi.org/10.5194/bg-15-6185-2018, 2018
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Single-celled, benthic foraminifera play a major role in marine biogeochemical cycling. This study compares the organic-matter-derived carbon and nitrogen processing of two abundant intertidal foraminifera species. The results of our laboratory feeding experiments suggest a significant difference in the contributions of each species to coastal carbon and nitrogen fluxes, which is mainly attributed to their different metabolic lifestyles.
Elizabeth N. Teel, Xiao Liu, Bridget N. Seegers, Matthew A. Ragan, William Z. Haskell, Burton H. Jones, and Naomi M. Levine
Biogeosciences, 15, 6151–6165, https://doi.org/10.5194/bg-15-6151-2018, https://doi.org/10.5194/bg-15-6151-2018, 2018
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Time-series sites have been instrumental in providing insight into how the ocean functions. However, to extrapolate the results from a single site to a larger region, the dynamics at the site must be placed into the context of regional-scale dynamics. We develop a framework for determining the spatial domain of a time-series site using high-resolution data. This framework quantifies the representativeness of the site and can be used to improve sampling to better capture the dynamics at the site.
Qixing Ji, Claudia Frey, Xin Sun, Melanie Jackson, Yea-Shine Lee, Amal Jayakumar, Jeffrey C. Cornwell, and Bess B. Ward
Biogeosciences, 15, 6127–6138, https://doi.org/10.5194/bg-15-6127-2018, https://doi.org/10.5194/bg-15-6127-2018, 2018
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Nitrous oxide (N2O) is a strong greenhouse gas and ozone-depletion agent. Intense N2O effluxes had been observed from nutrient-rich estuaries with human impacts, such as the Chesapeake Bay. We report that increased nitrogen availability and low-oxygen conditions stimulate N2O production. Thus, controlling the nutrient input to the bay will decrease nitrogen availability and alleviate eutrophication, leading to water column reoxygenation, and subsequently will mitigate N2O emission.
Bin Wang, Jiatang Hu, Shiyu Li, Liuqian Yu, and Jia Huang
Biogeosciences, 15, 6105–6125, https://doi.org/10.5194/bg-15-6105-2018, https://doi.org/10.5194/bg-15-6105-2018, 2018
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A physical–biogeochemical model was applied to study the response of hypoxia and oxygen dynamics to different riverine inputs. Results showed that the hypoxia in the Pearl River estuary was most sensitive to riverine inputs of POC, followed by DO and nutrients. This study also highlighted the significance of re-aeration for its buffering effects; i.e. the re-aeration responded rapidly to the perturbations of riverine inputs and in turn moderated the DO changes impacted by these perturbations.
Cited articles
Alasdair H. N. and Allard A.-S.: Environmental degradation and transformation of organic chemicals, CRC Press, Boca Raton, 2008.
Amachi, S., Kamagata, Y., Kanagawa, T., and Muramatsu, Y.: Bacteria mediate methylation of iodine in marine and terrestrial environments, Appl. Environ. Microb., 67, 2718–2722, 2001.
Aneja, V. P.: Characterization of emissions of biogenic hydrogen sulfide, Tellus B, 38, 81–86, 1986.
Armstrong, W.: Aeration in higher plants, Adv. Botanical Res., 7, 225–332, 1979.
Bahlmann, E., Weinberg, I., Seifert, R., Tubbesing, C., and Michaelis, W.: A high volume sampling system for isotope determination of volatile halocarbons and hydrocarbons, Atmos. Meas. Tech., 4, 2073–2086, https://doi.org/10.5194/amt-4-2073-2011, 2011.
Baird, A. J., Beckwith, C. W., Waldron, S., and Waddington, J. M.: Ebullition of methane-containing gas bubbles from near-surface Sphagnum peat, Geophys. Res. Lett., 31, L21505, https://doi.org/10.1029/2004GL021157, 2004.
Baker, J. M., Reeves, C. E., Nightingale, P. D., Penkett, S. A., Gibb, S. W., and Hatton, A. D.: Biological production of methyl bromide in the coastal waters of the North Sea and open ocean of the northeast Atlantic, Mar. Chem., 64, 267–285, 1999.
Bange, H. W., Bartell, U. H., Rapsomanikis, S., and Andreae, M. O.: Methane in the Baltic and North Seas and a reassessment of the marine emissions of methane, Global Biogeochem. Cy., 8, 465–480, 1994.
Barbash, J. E. and Reinhard, M.: Reactivity of sulfur Nucleophiles toward halogenated organic compounds in natural waters, in Biogenic Sulfur in the Environment, edited by: Saltzman, E. and Cooper, W. J., American Chemical Society, Washington DC, 101–137, 1989.
Barnes, J., Ramesh, R., Purvaja, R., Rajkumar, A. N., Kumar, B. S., Krithika, K., Ravichandran, K., Uher, G., and Upstill-Goddard, R.: Tidal dynamics and rainfall control N2O and CH4 emissions from a pristine mangrove creek, Geophys. Res. Lett., 33, L15405, https://doi.org/10.1029/2006GL026829, 2006.
Barron, C., Duarte, C. M., Frankignoulle, M., and Borges, A. V.: Organic carbon metabolism and carbonate dynamics in a Mediterranean seagrass (Posidonia oceanica) meadow, Est. Coast., 29, 417–426, 2006.
Bartlett, K. B., Bartlett, D. S., Harriss, R. C., and Sebacher, D. I.: Methane emissions along a salt-marsh salinity gradient, Biogeochemistry, 4, 183–202, 1987.
Bates, T. S., Lamb, B. K., Guenther, A., Dignon, J., and Stoiber, R. E.: Sulfur emissions to the atmosphere from natural sources, J. Atmos. Chem., 14, 315–337, 1992.
Bill, M., Rhew, R. C., Weiss, R. F., and Goldstein, A. H.: Carbon isotope ratios of methyl bromide and methyl chloride emitted from a coastal salt marsh, Geophys. Res. Lett., 29, 1045, https://doi.org/10.1029/2001gl012946, 2002.
Billerbeck, M., Werner, U., Bosselmann, K., Walpersdorf, E., and Huettel, M.: Nutrient release from an exposed intertidal sand flat, Mar. Ecol. Prog. Ser., 316, 35–51, 2006a.
Billerbeck, M., Werner, U., Polerecky, L., Walpersdorf, E., deBeer, D., and Huettel, M.: Surficial and deep pore water circulation governs spatial and temporal scales of nutrient recycling in intertidal sand flat sediment, Mar. Ecol. Prog. Ser., 326, 61–76, 2006b.
Bodenbender, J., Wassmann, R. Papen, H., and Rennenberg, H.: Temporal and spatial variation of sulfur-gas-transfer between coastal marine sediments and the atmosphere, Atmos. Environ., 33, 3487–3502, 1999.
Borum, J., Sand-Jensen, K., Binzer, T., Pedersen, O., and Greve, T.: Oxygen Movement in Seagrasses, Seagrasses: Biology, ecology and conservation, Springer Netherlands, 255–270, 2006.
Brito, A., Newton, A., Tett, P., and Fernandes, T. F.: Sediment and water nutrients and microalgae in a coastal shallow lagoon, Ria Formosa (Portugal): Implications for the Water Framework Directive, J. Environmen. Monit., 12, 318–328, 2010.
Brotas, V., Amorimferreira, A., Vale, C., and Catarino, F.: Oxygen profiles in intertidal sediments of Ria Formosa (S Portugal), Hydrobiologia, 207, 123–129, 1990.
Cabaço, S., Machás, R., Vieira, V., and Santos, R.: Impacts of urban wastewater discharge on seagrass meadows (Zostera noltii), Est. Coast. Shelf Sci., 78, 1–13, 2008.
Chanton, J. P., Martens, C. S., and Kelley, C. A.: Gas-transport from methane-saturated, tidal fresh-water and wetland sediments, Limnol. Oceanogr., 34, 807–819, 1989.
Charpy-Roubaud, C. and Sournia, A.: The comparative estimation of phytoplanktonic microphytobenthic and macrophytobenthic primary production in the oceans, Mar. Microb. Food Web., 4, 31–58, 1990.
Christof, O., Seifert, R., and Michaelis, W.: Volatile halogenated organic compounds in European estuaries, Biogeochemistry, 59, 143–160, 2002.
Cook, P. L. M., Wenzhöfer, F., Glud, R. N., Jansen, F., and Huettel, M.: Benthic solute exchange and carbon mineralization in two shallow subtidal sandy sediments: Effect of advective pore-water exchange, Limnol. Oceanogr., 52, 1943–1963, 2007.
Cooper, D. J., Demello, W. Z., Cooper, W. J., Zika, R. G., Saltzman, E. S., Prospero, J. M., and Savoie, D. L.: Short-term variability in biogenic sulfur emissions from a Florida Spartina alterniflora marsh, Atmos. Environ., 21, 7–12, 1987a.
Cooper, W. J., Cooper, D. J., Saltzman, E. S., Demello, W. Z., Savoie, D. L., Zika, R. G., and Prospero, J. M.: Emissions of biogenic sulfur-compounds from several wetland soils in Florida, Atmos. Environ., 21, 1491–1495, 1987b.
Dacey, J. W. H., King, G. M., and Wakeham, S. G.: Factors controlling emission of dimethyldulfide from salt marshes, Nature, 330, 643–645, 1987.
Deborde, F., Anschutz, P., Guèrin, F, Porier, D, Marty, D.,Boucher, G., Thouzeau, G., Canto, M., and Abril, G.: Methane sources, sinks and fluxes in a temperate tidal lagoon: The Arcachon Lagoon (SW France), Estuarine, Coast. Shelf Sci., 89, 256–266, 2010.
de la Paz, M., Gomez-Parra, A., and Forja, J.: Variability of the partial pressure of CO2 on a daily-to-seasonal time scale in a shallow coastal system affected by intensive aquaculture activities (Bay of Cadiz, SW Iberian Peninsula), Mar. Chem., 110, 195–204, 2008.
Delaune, R. D., Smith, C. J., and Patrick, W. H.: Methane release from gulf-coast wetlands, Tellus B, 35, 8–15, 1983.
Demello, W. Z., Cooper, D. J., Cooper, W. J., Saltzman, E. S., Zika, R. G., Savoie, D. L., and Prospero, J. M.: Spatial and diel variability in the emissions of some biogenic sulfur-compounds from a Florida Spartina-alterniflora coastal zone, Atmos. Environ., 21, 987–990, 1987.
Ding, W. X., Cai, Z. C., and Tsuruta, H.: Methane concentration and emission as affected by methane transport capacity of plants in freshwater marsh, Water Air Soil Pollut., 158, 99–111, 2004.
Duarte, C. M., Middelburg, J. J., and Caraco, N.: Major role of marine vegetation on the oceanic carbon cycle, Biogeosciences, 2, 1–8, https://doi.org/10.5194/bg-2-1-2005, 2005.
Duarte, C. M., Marba, N., Gacia, E., Fourqurean, J. W., Beggins, J., Barron, C., and Apostolaki, E. T.: Seagrass community metabolism: assessing the carbon sink capacity of seagrass meadows. Global. Biogeochem. Cy., 24, GB4032, https://doi.org/10.1029/2010GB003793, 2010.
Ferron, S., Alonso-Perez, S. F., Ortega, T., and Forja, J. M.: Benthic respiration on the north- eastern shelf of the Gulf of Cadiz (SW Iberian Peninsula), Mar. Ecol. Prog. Ser., 392, 69–80, 2009.
Gao, F. and Yates, S. R.: Laboratory study of closed and dynamic flux chambers: Experimental results and implications for field application, J. Geophys. Res.-Atmos., 103, 26115–26125, 1998.
Gao, F., Yates, S. R., Yates, M. V., Gan, J. Y., and Ernst, F. F.: Design, fabrication, and application of a dynamic chamber for measuring gas emissions from soil, Environ. Sci. Technol., 31, 148–153, 1997.
Glaser, P. H., Chanton, J. P., Morin, P., Rosenberry, D. mO., Siegel, D. I., Ruud, O., Chasar, L. I., and Reeve, A. S.: Surface deformations as indicators of deep ebullition fluxes in a large northern peatland, Global Biogeochem. Cy., 18, GB1003, https://doi.org/10.1029/2003GB002069, 2004.
Grunwald, M., Dellwig, O., Beck, M., Dippner, J. W., Freund, J. A., Kohlmeier, C., Schnetger, B., and Brumsack, H.-J.: Methane in the southern North Sea: sources, spatial distribution and budgets. Estuarine, Coast. Shelf Sci., 81, 445–456, 2009.
Gschwend, P. M., Macfarlane, J. K., and Newman, K. A.: Volatile halogenated organic-compounds released to seawater from temperate marine macroalgae, Science, 227, 1033–1035, 1985.
Guimarães, H., Cunha, A.H., Nzinga, R., and Marques, J.: The distribution of seagrass (Zostera noltii Hornem.) in the Ria Formosa lagoon system and the implications of clam farming on its conservation, J. Nat. Conserv., 20, 30–40, 2012.
Hemminga, M. and Duarte, C. M.: Seagrass ecology, Cambridge, 2000.
Heyer, J. and Berger, U.: Methane emission from the coastal area in the southern Baltic Sea, Estuar. Coast. Shelf Sci., 51, 13–30, 2000.
Hubas, C., Davoult, D., Cariou, T., and Artigas, L. F.: Factors controlling benthic metabolism during low tide along a granulometric gradient in an intertidal bay (Roscoff Aber Bay, France), Mar. Ecol. Prog. Ser., 316, 53–68, 2006.
Huettel, M. and Rusch, A.: Transport and degradation of phytoplankton in permeable sediment, Limnol. Oceanogr., 45, 534–549, 2000.
Huettel, M., Ziebis, W., and Forster, S.: Flow-induced uptake of particulate matter in permeable sediments, Limnol. Oceanogr., 41, 309–322, 1996.
Jansen, S., Walpersdorf, E., Werner, U., Billerbeck, M., Böttcher, M. E., and de Beer, D.: Functioning of intertidal flats inferred from temporal and spatial dynamics of O2, H2S and pH in their surface sediment, Oc. Dynam., 59, 317–332, 2009.
Jonkers, H. M., van Bergeijk, S. A., and van Gemerden, H.: Microbial production and consumption of dimethyl sulfide (DMS) in a sea grass (Zostera noltii)-dominated marine intertidal sediment ecosystem (Bassin d'Arcachon, France), Fems Microbiol. Ecol., 31, 163–172, 2000.
Jorgensen, B. B. and Okholmhansen, B.: Emissions of biogenic sulfur gases from a danish estuary, Atmos. Environ., 19, 1737–1749, 1985.
Khalil, M. A. K. and Rasmussen, R. A.: Global sources, lifetimes and mass balances of carbonyl sulfide (OCS) and cabon-disulfide (CS2) in the earths atmosphere, Atmos. Environ., 18, 1805–1813, 1984.
Kim, K. H. and Kim, D.: Seasonal and spatial variability of sediment oxygen fluxes in the Beobsan intertidal flat of Taean Bay, mid-western Korean Peninsula, Geosci. J., 11, 323–329, 2007.
Kim, K. H. and Lindberg, S. E.: Design and initial tests of a dynamic enclosure chamber for measurements of vapor-phase mercury fluxes over soils, Water Air Soil Pollut., 80, 1059–1068, 1995.
Koch, E., Ackerman, J., Verduin, J., and Keulen, M.: Fluid Dynamics in Seagrass Ecology–-from Molecules to Ecosystems, Seagrasses: Biology, Ecol. Conservat., Springer Netherlands, 193–225, 2006.
Koch, E. W.: Preliminary evidence on the interdependent effect of currents and porewater geochemistry on Thalassia testudinum Banks ex Konig seedlings, Aquat. Bot., 63, 95–102, 1999.
Laanbroek, H. J.: Methane emission from natural wetlands: interplay between emergent macrophytes and soil microbial processes, A mini-review, Ann. Bot., 105, 141–153, 2010.
Larkum, A. W. D., Roberts, G., Kuo, J. S., and Strother, S.: Gaseous movement in seagrasses. In: Larkum AWD, McComb AJ and Shepherd SA, Biology of Seagrasses, Elsevier, Amsterdam, 686-722, 1989.
Larned, S.T.: Effects of the invasive, nonindigenous seagrass Zostera japonica on nutrient fluxes between the water column and benthos in a NE Pacific estuary, Mar. Ecol. Prog. Ser., 254, 69–80, 2003.
Leck, C. and Rodhe, H.: Emissions of marine biogenic sulfur to the atmosphere of Northern Europe, J. Atmos. Chem., 12, 63–86, 1991.
Leuschner, C., Landwehr, S., and Mehlig, U.: Limitation of carbon assimilation of intertidal Zostera noltii and Z-marina by desiccation at low tide, Aquat. Bot., 62, 171–176, 1998.
Leuschner, C. and Rees, U.: CO2 gas-exchange of 2 intertidal seagrass species, Zostera-marina L and Zostera noltii Hornem during emersion, Aquat. Bot., 5, 53–62, 1993.
Lopez, N. I. and Duarte, C. M.: Dimethyl sulfoxide (DMSO) reduction potential in mediterranean seagrass (Posidonia oceanica) sediments, J. Sea Res., 51, 11–20, 2004.
Manley, S. L., Wang, N.-Y., Walser, M. L., and Cicerone, R. J.: Coastal salt marshes as global methyl halide sources from determinations of intrinsic production by marsh plants, Global Biogeochem. Cy., 20, GB3015, https://doi.org/10.1029/2005GB002578, 2006.
Martens, C. S. and Berner, R. A.: Methane production in interstitial waters of sulfate-depleted marine sediments, Science 185, 1167–1169, 1974.
Mateo, M., Cebrián, J., Dunton, K., and Mutchler, T.: Carbon Flux in Seagrass Ecosystems, Seagrasses: Biology, Ecology and Conservation, Springer Netherlands, 159–192, 2006.
Meixner, F. X., Fickinger, T., Marufu, L., Serca, D., Nathaus, F. J., Makina, E., Mukurumbira, L., and Andreae, M. O.: Preliminary results on nitric oxide emission from a southern African savanna ecosystem, Nutr. Cy. Agroecosys., 48, 123–138, 1997.
Meysman, F. J. R., Galaktionov, E. S., Gribsholt, B., and Middelburg, J. J.: Bioirrigation in permeable sediments: Advective pore-water transport induced by burrow ventilation, Limnol. Oceanogr., 51, 142–156, 2006.
Middelburg, J. J., Nieuwenhuize, J., Iversen, N., Hogh, N., De Wilde, H., Helder, W., Seifert, R., and Christof, O.: Methane distribution in European tidal estuaries, Biogeochemistry, 59, 95–119, 2002.
Migne, A., Davoult, D., Spilmont, N., Menu, D., Boucher, G., Gattuso, J. P., and Rybarczyk, H.: A closed-chamber CO2-flux method for estimating intertidal primary production and respiration under emersed conditions, Mar. Biol., 140, 865–869, 2002.
Migne, A., Spilmont, N., and Davoult, D.: In situ measurements of benthic primary production during emersion: seasonal variations and annual production in the Bay of Somme (eastern English Channel, France), Continent. Shelf Res., 24, 1437–1449, 2004.
Miller, L. G., Kalin, R. M., McCauley, S. E., Hamilton, D. J. T., Harper, G. B., Millet, D. B., Oremland, R. S., and Goldstein A. H.: Large carbon isotope fractionation associated with oxidation of methyl halides by methylotrophic bacteria, Proc. Natl. Acad. Sci. USA, 98, 5833–5837, 2001.
Moore, R. M., Tokarczyk, R., Tait, V. K., Poulin, M., and Geen, C.: Marine phytoplankton as a natural source of volatile organohalogens, in: Grimvall, A. and Leer, E. B., Naturally-Produced Organohalogens, Springer Netherlands, 283–294, 1995.
Newton, A., Icely, J. D., Falcao, M., Nobre, A., Nunes, J. P., Ferreira, J. G., and Vale, C.: Evaluation of eutrophication in the Ria Formosa coastal lagoon, Portugal, Continent. Shelf Res., 23, 1945–1961, 2003.
Nicholson, G. J., Longmore, A. R., and Berelson, W. M.: Nutrient fluxes measured by two types of benthic chamber, Mar. Freshwater Res., 50, 567–572, 1999.
Nielsen, P.: Tidal dynamics of the water-table in beaches, Water Resour. Res., 26, 2127–2134, 1990.
Oremland, R. S.: Methane production in shallow-water, tropical marine sediments, Appl. Microbiol., 30, 602–608, 1975.
Oremland, R. S., Marsh, L. M., and Polcin, S.: Methane production and simultaneous sulfate reduction in anoxic, salt-marsh sediments, Nature, 296, 143–145, 1982.
Ouisse, V., Migne, A., and Davoult, D.: Community-level carbon flux variability over a tidal cycle in Zostera marina and Z-noltii beds, Mar. Ecol. Prog. Ser., 437, 79–87, 2011.
Pape, L., Ammann, C., Nyfeler-Brunner, A., Spirig, C., Hens, K., and Meixner, F. X.: An automated dynamic chamber system for surface exchange measurement of non-reactive and reactive trace gases of grassland ecosystems, Biogeosciences, 6, 405–429, https://doi.org/10.5194/bg-6-405-2009, 2009.
Pérez-Llorens, J. L. and Niell, F. X.: Photosynthesis in air: comparative responses to different temperatures of two morphotypes of Zostera noltii Hornem. from Palmones River estuary (southern Spain), Verh. Internat. Verein, Limnol. Oceanogr., 25, 2265–2269, 1994.
Precht, E. and Huettel, M.: Advective pore-water exchange driven by surface gravity waves and its ecological implications, Limnol. Oceanogr., 48, 1674–1684, 2003.
Precht, E. and Huettel, M.: Rapid wave-driven advective pore water exchange in a permeable coastal sediment, J. Sea Res., 51, 93–107, 2004.
Rhew, R. C., Miller, B. R., and Weiss, R. F.: Natural methyl bromide and methyl chloride emissions from coastal salt marshes, Nature, 403, 292–295, 2000.
Riedl, R. J., Machan, R., and Huang, N.: Subtidal pump – mechanisms of interstitial water exchange by wave action, Mar. Biol., 13, 210–221, 1972.
Santos, R., Silva, J., Alexandre, A., Navarro, N., Barron, C., and Duarte, C. M.: Ecosystem metabolism and carbon fluxes of a tidally-dominated coastal lagoon, Estuaries, 27, 977–985, 2004.
Sebacher, D. I., Harriss, R. C., and Bartlett, K. B.: Methane emissions to the atmosphere through aquatic plants, J. Environ. Qual., 14, 40–46, 1985.
Silva, J., Feijoo, P., and Santos, R.: Underwater measurements of carbon dioxide evolution in marine plant communities: A new method, Estuar. Coast. Shelf Sci., 78, 827–830, 2008.
Silva, J., Santos, R., Calleja, M. L., and Duarte, C. M.: Submerged versus air-exposed intertidal macrophyte productivity: from physiological to community-level assessments, J. Experimen. Mar. Biol. Ecol., 317, 87–95, 2005.
Spilmont, N., Migne, A., Lefebvre, A., Artigas, L. F., Rauch, M., and Davoult, D.: Temporal variability of intertidal benthic metabolism under emersed conditions in an exposed sandy beach (Wimereux, eastern English Channel, France), J. Sea Res., 53, 161–167, 2005.
Tengberg, A., Stahl H., G. Gust, G., V. Mueller, V., U. Arning, U., Andersson, H., and Hall, P. A. J.: Intercalibration of benthic flux chambers I. Accuracy of flux measurements and influence of chamber hydrodynamics, Prog. Oceanogr., 60, 1–28, 2004.
Thibodeaux, L. J. and Boyle, J. D.: Bedform-generated convective-transport in bottom sediment, Nature, 325, 341–343, 1987.
Turner, S. M., Malin, G., and Liss, P. S.: Dimethyl Sulfide and (Dimethylsulfonio) propionate in European Coastal and Shelf Waters, Biogenic Sulfur in the Environment, Am. Chem. Soc., 183–200, 1989.
Urhahn, T.: Leichtflüchtige ECD-aktive Verbindungen in der marinen Grundschicht (MBL) des Atlantischen Ozeans: Vorkommen, Quellen und Verteilung, Department of Analytical Chemistry and Environmental Chemistry, University of Ulm, Ulm, Germany, 2003.
Valtanen, A., Solloch, S., Hartikainen, H., and Michaelis, W.: Emissions of volatile halogenated compounds from a meadow in a coastal area of the Baltic Sea, Bor. Environ. Res., 14, 915–931, 2009.
Van der Nat, F. J. and Middelburg, J. J.: Methane emission from tidal freshwater marshes, Biogeochemistry, 49, 103–121, 2000.
Werner, U., Billerbeck, M., Polerecky, L., Franke, U., Huettel, M., van Beusekom, J. E. E., and de Beer, D.: Spatial and temporal patterns of mineralization rates and oxygen distribution in a permeable intertidal sand flat (Sylt, Germany), Limnol. Oceanogr., 51, 2549–2563, 2006.
Wuebbles, D. J. and Hayhoe, K.: Atmospheric methane and global change, Earth-Sci. Rev., 57, 177–210, 2002.
Yamamoto, A., Hirota, M., Suzuki, S., Oe, Y., Zhang, P., and Mariko, S.: Effects of tidal fluctuations on CO2 and CH4 fluxes in the littoral zone of a brackish-water lake, Limnology, 10, 228–237, 2009.
Zhang, H., Lindberg, S. E., Barnett, M. O., Vette, A. F., and Gustin, M. S.: Dynamic flux chamber measurement of gaseous mercury emission fluxes over soils, Part 1: simulation of gaseous mercury emissions from soils using a two-resistance exchange interface model, Atmos. Environ., 36, 835–846, 2002.
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