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5 results on '"Pansch, Nina"'

1. Carbon dioxide fluxes increase from day to night across European streams

Author

Attermeyer, Katrin, Casas-Ruiz, Joan Pere, Fuss, Thomas, Pastor, Ada, Cauvy-Fraunié, Sophie, Sheath, Danny, Nydahl, Anna C., Doretto, Alberto, Portela, Ana Paula, Doyle, Brian C., Simov, Nikolay, Gutmann Roberts, Catherine, Niedrist, Georg H., Timoner, Xisca, Evtimova, Vesela, Barral-Fraga, Laura, Bašić, Tea, Audet, Joachim, Deininger, Anne, Busst, Georgina, Fenoglio, Stefano, Catalán, Núria, de Eyto, Elvira, Pilotto, Francesca, Mor, Jordi-René, Monteiro, Juliana, Fletcher, David, Noss, Christian, Colls, Miriam, Nagler, Magdalena, Liu, Liu, Romero González-Quijano, Clara, Romero, Ferran, Pansch, Nina, Ledesma, José L. J., Pegg, Josephine, Klaus, Marcus, Freixa, Anna, Herrero Ortega, Sonia, Mendoza-Lera, Clara, Bednařík, Adam, Fonvielle, Jérémy A., Gilbert, Peter J., Kenderov, Lyubomir A., Rulík, Martin, and Bodmer, Pascal

Published
2021
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2. Carbon dioxide fluxes increase from day to night across European streams

Author

Attermeyer, Katrin, primary, Casas-Ruiz, Joan Pere, additional, Fuss, Thomas, additional, Pastor, Ada, additional, Cauvy-Fraunié, Sophie, additional, Sheath, Danny, additional, Nydahl, Anna, additional, Doretto, Alberto, additional, Portela, Ana, additional, Doyle, Brian, additional, Simov, Nikolay, additional, Gutmann Roberts, Catherine, additional, Niedrist, Georg, additional, Timoner, Xisca, additional, Evtimova, Vesela, additional, Barral-Fraga, Laura, additional, Bašić, Tea, additional, Audet, Joachim, additional, Deininger, Anne, additional, Busst, Georgina, additional, Fenoglio, Stefano, additional, Catalán, Núria, additional, de Eyto, Elvira, additional, Pilotto, Francesca, additional, Mor, Jordi-René, additional, Monteiro, Juliana, additional, Fletcher, David, additional, Noss, Christian, additional, Colls, Miriam, additional, Nagler, Magdalena, additional, Liu, Liu, additional, Romero González-Quijano, Clara, additional, Romero, Ferran, additional, Pansch, Nina, additional, Ledesma, José, additional, Pegg, Josephine, additional, Klaus, Marcus, additional, Freixa, Anna, additional, Herrero Ortega, Sonia, additional, Mendoza-Lera, Clara, additional, Bednařík, Adam, additional, Fonvielle, Jérémy, additional, Gilbert, Peter, additional, Kenderov, Lyubomir, additional, Rulík, Martin, additional, and Bodmer, Pascal, additional

Published
2021
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4. Diel variation of CH4and CO2dynamics in two contrasting temperate lakes

Author

Martinez-Cruz, Karla, Sepulveda-Jauregui, Armando, Greene, Samuel, Fuchs, Andrea, Rodriguez, Maricela, Pansch, Nina, Gonsiorczyk, Thomas, and Casper, Peter

Abstract

ABSTRACTThe concurrent short-term fluctuations of methane (CH4) and carbon dioxide (CO2) concentrations and emissions in lakes are not well studied. Quantifying the differences in daytime versus nighttime dynamics may provide information about the controls over greenhouse gas production and may have relevance to lake carbon budgets. In this study, the diel variation of CH4and CO2emissions and concentration patterns were determined along the water column of 2 temperate lakes with different trophic states during July 2015. The results showed that the shallow eutrophic lake had significantly higher CH4and CO2releases than the deep oligo-mesotrophic lake. No significant diel fluctuations were observed in atmospheric CH4emissions from either lake or in CO2emission from the oligo-mesotrophic lake, but significantly higher CO2emission from the eutrophic lake occurred during the daytime compared to nighttime. Based on a diffusion–reaction model, it was possible to estimate the diel variation of the sources and sinks of dissolved CH4throughout the water column, suggesting lateral transport is a potential source of CH4in oxygenated water layers in the oligo-mesotrophic lake. Sources and sinks throughout the water column should be considered in future studies for a better understanding of CH4dynamics within the lakes.

Published
2020
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5. Carbon dioxide fluxes increase from day to night across European streams

Author

Attermeyer, Katrin, Casas-Ruiz, Joan Pere, Fuss, Thomas, Pastor, Ada, Cauvy-Frauni��, Sophie, Sheath, Danny, Nydahl, Anna C., Doretto, Alberto, Portela, Ana Paula, Doyle, Brian C., Simov, Nikolay, Gutmann Roberts, Catherine, Niedrist, Georg H., Timoner, Xisca, Evtimova, Vesela, Barral-Fraga, Laura, Ba��i��, Tea, Audet, Joachim, Deininger, Anne, Busst, Georgina, Fenoglio, Stefano, Catal��n, N��ria, De Eyto, Elvira, Pilotto, Francesca, Mor, Jordi-Ren��, Monteiro, Juliana, Fletcher, David, Noss, Christian, Colls, Miriam, Nagler, Magdalena, Liu, Liu, Romero Gonz��lez-Quijano, Clara, Romero, Ferran, Pansch, Nina, Ledesma, Jos�� L. J., Pegg, Josephine, Klaus, Marcus, Freixa, Anna, Herrero Ortega, Sonia, Mendoza-Lera, Clara, Bedna����k, Adam, Fonvielle, J��r��my A., Gilbert, Peter J., Kenderov, Lyubomir A., Rul��k, Martin, and Bodmer, Pascal

Subjects
13. Climate action
Abstract

Globally, inland waters emit over 2 Pg of carbon per year as carbon dioxide, of which the majority originates from streams and rivers. Despite the global significance of fluvial carbon dioxide emissions, little is known about their diel dynamics. Here we present a large-scale assessment of day- and night-time carbon dioxide fluxes at the water-air interface across 34 European streams. We directly measured fluxes four times between October 2016 and July 2017 using drifting chambers. Median fluxes are 1.4 and 2.1 mmol m���2 h���1 at midday and midnight, respectively, with night fluxes exceeding those during the day by 39%. We attribute diel carbon dioxide flux variability mainly to changes in the water partial pressure of carbon dioxide. However, no consistent drivers could be identified across sites. Our findings highlight widespread day-night changes in fluvial carbon dioxide fluxes and suggest that the time of day greatly influences measured carbon dioxide fluxes across European streams.

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