Metabolic performance and thermal and salinity tolerance of the coral Platygyra carnosa in Hong Kong waters.
Mar Pollut Bull
; 153: 111005, 2020 Apr.
Article
em En
| MEDLINE
| ID: mdl-32275553
ABSTRACT
Stress-tolerant coral species, such as Platygyra spp., are considered to be well adapted to survive in marginal reefs, but their physiological response to short term exposure to abnormally high temperature and lowered salinity remains poorly understood. Using non-invasive techniques to quantitatively assess the health of Platygyra carnosa (e.g. respiration, photosynthesis, biocalcification and whiteness), we identified the plasticity of its energetics and physiological limits. Although these indicators suggest that it can survive to increasing temperature (25-32 °C), its overall energetics were seriously diminished at temperatures >30 °C. In contrast, it was well adapted to hyposaline waters (31-21 psu) but with reduced biocalcification, indicating short term adaptation for expected future changes in salinity driven by increased amounts and intensities of precipitation. Our findings provide useful insights to the effect of these climate drivers on P. carnosa metabolism and thus better forecast changes in their health status under future climate change scenarios.
Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Antozoários
/
Tolerância ao Sal
Tipo de estudo:
Prognostic_studies
Limite:
Animals
País como assunto:
Asia
Idioma:
En
Ano de publicação:
2020
Tipo de documento:
Article