Articles | Volume 15, issue 23
Biogeosciences, 15, 7333–7346, 2018
https://doi.org/10.5194/bg-15-7333-2018
Biogeosciences, 15, 7333–7346, 2018
https://doi.org/10.5194/bg-15-7333-2018

Research article 11 Dec 2018

Research article | 11 Dec 2018

High denitrification and anaerobic ammonium oxidation contributes to net nitrogen loss in a seagrass ecosystem in the central Red Sea

Neus Garcias-Bonet et al.

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Cited articles

Almahasheer, H., Serrano, O., Duarte, C. M., Arias-Ortiz, A., Masque, P., and Irigoien, X.: Low Carbon sink capacity of Red Sea mangroves, Sci. Rep.-UK, 7, 9700, https://doi.org/10.1038/s41598-017-10424-9, 2017. 
Alongi, D. M., Trott, L. A., Undu, M. C., and Tirendi, F.: Benthic microbial metabolism in seagrass meadows along a carbonate gradient in Sulawesi, Indonesia, Aquat. Microb. Ecol., 51, 141–152, https://doi.org/10.3354/ame01191, 2008. 
Amano, T., Yoshinaga, I., Okada, K., Yamagishi, T., Ueda, S., Obuchi, A., Sako, Y., and Suwa, Y.: Detection of anammox activity and diversity of anammox bacteria-related 16S rRNA genes in coastal marine sediment in Japan, Microbes Environ., 22, 232–242, 2007. 
Amano, T., Yoshinaga, I., Yamagishi, T., Van Thuoc, C., Ueda, S., Kato, K., Sako, Y., and Suwa, Y.: Contribution of anammox bacteria to benthic nitrogen cycling in a mangrove forest and shrimp ponds, Haiphong, Vietnam, Microbes Environ., 26, 1–6, 2011. 
An, S. and Gardner, W. S.: Dissimilatory nitrate reduction to ammonium (DNRA) as a nitrogen link, versus denitrification as a sink in a shallow estuary (Laguna Madre/Baffin Bay, Texas), Mar. Ecol.-Prog. Ser., 237, 41–50, 2002. 
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Short summary
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.
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