Ecophysiological response of Jania rubens (Corallinaceae) to ocean acidification
| Autor: | Chiara Amitrano, Maurizio Lorenti, Maria Cristina Buia, Carmen Arena, Lucia Porzio, Ermenegilda Vitale |
|---|---|
| Přispěvatelé: | Porzio, L., Buia, M. C., Lorenti, M., Vitale, Ermenegilda, Amitrano, Chiara, Arena, C. |
| Rok vydání: | 2018 |
| Předmět: |
Bleaching
Carbonate content Low-pH/high-pCO2 photochemistry Polyphenols Stress response 0106 biological sciences geography geography.geographical_feature_category 010504 meteorology & atmospheric sciences biology Ecology 010604 marine biology & hydrobiology Jania rubens Corallinaceae Coralline algae Ocean acidification biology.organism_classification 01 natural sciences chemistry.chemical_compound chemistry Benthic zone General Earth and Planetary Sciences Environmental science Ecosystem Phycobilin General Agricultural and Biological Sciences Reef 0105 earth and related environmental sciences General Environmental Science |
| Zdroj: | Rendiconti Lincei. Scienze Fisiche e Naturali. 29:543-546 |
| ISSN: | 1720-0776 2037-4631 |
| Popis: | Coralline algae (Rhodophyta) play a key role in promoting settlement of other benthic organisms, being the food source for herbivores, being involved in the stabilization of reef networks, and in carbonate production. They are considered a vulnerable group to ocean acidification due to the potential dissolution of their high-Mg calcite skeleton at lower pH. Nevertheless, different species of coralline algae showed different responses to low-pH/high-pCO2 environment. Here, we studied the physiological response of Jania rubens to the pH condition predicted for the year 2100. We used a natural CO2 vent system as natural laboratory to transplant J. rubens from pH 8.1–7.5 for 3 weeks. Maximal PSII photochemical efficiency showed a significant reduction in transplanted thalli at low pH (7.5-T) compared to other conditions; consistent with that result, also the pigments involved in the light-harvesting spectrum of J. rubens (i.e., chlorophylls, carotenoids, and phycobilins), exhibited a significant decrease under water acidification, highlighting the strong sensitivity of this species to the environmental change. A major understanding of the response of coralline algae at high CO2 will go through the impact of OA on benthic ecosystems in the next future. This contribution is the written, peer-reviewed version of a paper presented at the Conference “Changes and Crises in the Mediterranean Sea” held at Accademia Nazionale dei Lincei in Rome on October 17, 2017. © 2018 Accademia Nazionale dei Lincei |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink