Atmospheric deposition of reactive nitrogen as a regional-scale eutrophication stress on the coral reef ecosystem
Miyajima, T.; Morimoto, N.; Nakamura, T.; Yamamoto, T.; Watanabe, A.; Nadaoka, K. (2016). Atmospheric deposition of reactive nitrogen as a regional-scale eutrophication stress on the coral reef ecosystem, in: Kayanne, H. (Ed.) Coral reef science: Strategy for ecosystem symbiosis and coexistence with humans under multiple stresses. Coral Reefs of the World, 5: pp. 95-101. http://dx.doi.org/10.1007/978-4-431-54364-0_8
In: Kayanne, H. (Ed.) (2016). Coral reef science: Strategy for ecosystem symbiosis and coexistence with humans under multiple stresses. Coral Reefs of the World, 5. Springer: Tokyo. ISBN 978-4-431-54363-3; e-ISBN 978-4-431-54364-0. ix, 101 pp. https://dx.doi.org/10.1007/978-4-431-54364-0, more
In: Coral Reefs of the World. Springer: Dordrecht. ISSN 2213-719X, more
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| Keywords |
Reefs > Biogenic deposits > Coral reefs
Temporal variations > Periodic variations > Seasonal variations
Marine/Coastal |
| Author keywords |
Atmospheric deposition; Reactive nitrogen |
| Authors | | Top |
- Miyajima, T.
- Morimoto, N.
- Nakamura, T.
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- Yamamoto, T.
- Watanabe, A.
- Nadaoka, K.
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| Abstract |
Long-range transport and deposition of atmospheric pollutants from mid-latitude industrial regions to low-latitude seas have the potential to degrade coral reefs. We investigated the atmospheric wet deposition of dissolved inorganic nitrogen (DIN) and phosphorus (DIP) to coral reef sites around the Ishigaki and Iriomote Islands in the subtropical western North Pacific. The deposition rate of DIN was higher in autumn and winter than in summer. The annual N deposition was 3–8 times higher than rates previously observed at subtropical North Atlantic reef sites and was almost as large as the cyanobacterial N2 fixation rate previously estimated for Ishigaki reefs. A backward trajectory analysis of an air mass suggested that the dominant remote emission source for atmospheric nitrate in winter was coastal industrial areas in continental China. A comparison with previous reports suggested that the influence of transboundary pollution on the N budget at the study site had significantly increased during the first decade of the twenty-first century. |
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