Articles | Volume 16, issue 1
Biogeosciences, 16, 167–175, 2019
https://doi.org/10.5194/bg-16-167-2019
Biogeosciences, 16, 167–175, 2019
https://doi.org/10.5194/bg-16-167-2019

Research article 17 Jan 2019

Research article | 17 Jan 2019

Warming effect on nitrogen fixation in Mediterranean macrophyte sediments

Neus Garcias-Bonet et al.

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Cited articles

Agawin, N. S., Ferriol, P., Sintes, E., and Moyà, G.: Temporal and spatial variability of in situ nitrogen fixation activities associated with the Mediterranean seagrass Posidonia oceanica meadows, Limnol. Oceanogr., 62, 2575–2592, 2017. 
Agawin, N. S. R., Ferriol, P., Cryer, C., Alcon, E., Busquets, A., Sintes, E., Vidal, C., and Moyà, G.: Significant nitrogen fixation activity associated with the phyllosphere of Mediterranean seagrass Posidonia oceanica: first report, Mar. Ecol. Prog. Ser., 551, 53–62, 2016. 
Arias-Ortiz, A., Serrano, O., Masqué, P., Lavery, P. S., Mueller, U., Kendrick, G. A., Rozaimi, M., Esteban, A., Fourqurean, J. W., and Marbà, N.: A marine heatwave drives massive losses from the world's largest seagrass carbon stocks, Nat. Clim. Change, 8, 338–344, 2018. 
Belkin, I. M.: Rapid warming of large marine ecosystems, Prog. Oceanogr., 81, 207–213, 2009. 
Béthoux, J. P. and Copin-Montégut, G.: Biological Fixation of Atmospheric Nitrogen in the Mediterranean-Sea, Limnol. Oceanogr., 31, 1353–1358, 1986. 
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Short summary
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.
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