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Aragonite saturation state in a tropical coastal embayment dominated by phytoplankton blooms (Guanabara Bay - Brazil).
| Content Provider | Semantic Scholar |
|---|---|
| Author | Cotovicz, Luiz Carlos Knoppers, Bastiaan Adriaan Brandini, Nilva Poirier, Dominique Santos, Suzan J. Costa Abril, Gwenäel |
| Copyright Year | 2018 |
| Abstract | The dynamics of the aragonite saturation state (Ωarag) were investigated in the eutrophic coastal waters of Guanabara Bay (RJ-Brazil). Large phytoplankton blooms stimulated by a high nutrient enrichment promoted the production of organic matter with strong uptake of dissolved inorganic carbon (DIC) in surface waters, lowering the concentrations of dissolved carbon dioxide (CO2aq), and increasing the pH, Ωarag and carbonate ion (CO32-), especially during summer. The increase of Ωarag related to biological activity was also evident comparing the negative relationship between the Ωarag and the apparent utilization of oxygen (AOU), with a very close behavior between the slopes of the linear regression and the Redfield ratio. The lowest values of Ωarag were found at low-buffered waters in regions that receive direct discharges from domestic effluents and polluted rivers, with episodic evidences of corrosive waters (Ωarag<1). This study showed that the eutrophication controlled the variations of Ωarag in Guanabara Bay. |
| Starting Page | 729 |
| Ending Page | 739 |
| Page Count | 11 |
| File Format | PDF HTM / HTML |
| DOI | 10.1016/j.marpolbul.2017.10.064 |
| Alternate Webpage(s) | https://borea.mnhn.fr/sites/default/files/pdfs/Cotovicz_Jr_et_al_2018_MarPolBull.pdf |
| PubMed reference number | 29102070 |
| Alternate Webpage(s) | https://doi.org/10.1016/j.marpolbul.2017.10.064 |
| Journal | Medline |
| Volume Number | 129 |
| Issue Number | 2 |
| Journal | Marine pollution bulletin |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
