Academic Journal
Out of the blue: the independent activity of sulfur-oxidizers and diatoms mediate the sudden color shift of a tropical river
| العنوان: | Out of the blue: the independent activity of sulfur-oxidizers and diatoms mediate the sudden color shift of a tropical river |
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| المؤلفون: | Alejandro Arce-Rodríguez, Eduardo Libby, Erick Castellón, Roberto Avendaño, Juan Carlos Cambronero, Maribel Vargas, Dietmar H. Pieper, Stefan Bertilsson, Max Chavarría, Fernando Puente-Sánchez |
| المصدر: | Environmental Microbiome, Vol 18, Iss 1, Pp 1-14 (2023) |
| بيانات النشر: | BMC, 2023. |
| سنة النشر: | 2023 |
| المجموعة: | LCC:Environmental sciences LCC:Microbiology |
| مصطلحات موضوعية: | Geobiology, Hydroxyaluminosilicates, Hydrothermal, Sulfur oxidizing bacteria, Diatoms, Río Celeste, Environmental sciences, GE1-350, Microbiology, QR1-502 |
| الوصف: | Abstract Background Río Celeste (“Sky-Blue River”) is a river located in the Tenorio National Park (Costa Rica) that has become an important hotspot for eco-tourism due to its striking sky-blue color. A previous study indicated that this color is not caused by dissolved chemical species, but by formation of light-scattering aluminosilicate particles at the mixing point of two colorless streams, the acidic Quebrada Agria and the neutral Río Buenavista. Results We now present microbiological information on Río Celeste and its two tributaries, as well as a more detailed characterization of the particles that occur at the mixing point. Our results overturn the previous belief that the light scattering particles are formed by the aggregation of smaller particles coming from Río Buenavista, and rather point to chemical formation of hydroxyaluminosilicate colloids when Quebrada Agria is partially neutralized by Río Buenavista, which also contributes silica to the reaction. The process is mediated by the activities of different microorganisms in both streams. In Quebrada Agria, sulfur-oxidizing bacteria generate an acidic environment, which in turn cause dissolution and mobilization of aluminum and other metals. In Río Buenavista, the growth of diatoms transforms dissolved silicon into colloidal biogenic forms which may facilitate particle precipitation. Conclusions We show how the sky-blue color of Río Celeste arises from the tight interaction between chemical and biological processes, in what constitutes a textbook example of emergent behavior in environmental microbiology. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2524-6372 44997728 |
| Relation: | https://doaj.org/toc/2524-6372 |
| DOI: | 10.1186/s40793-023-00464-2 |
| URL الوصول: | https://doaj.org/article/4e9a5de41d544f5e80d1a44997728fc1 |
| رقم الانضمام: | edsdoj.4e9a5de41d544f5e80d1a44997728fc1 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 25246372 44997728 |
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| DOI: | 10.1186/s40793-023-00464-2 |