An effect-analysis method for species-dependent coral health status in temperature and ammonia: a case study of Acropora sp., Turbinaria sp., and Porites sp.

• Main Authors: Bussapakorn U, Petchporn C, Sompop R
• Format: Article
• Language: English
• Published: EDP Sciences 2019-01-01
• Series: E3S Web of Conferences
• Online Access: https://www.e3s-conferences.org/articles/e3sconf/pdf/2019/19/e3sconf_cgeee2018_01002.pdf

This research aimed to study the effects of temperature and ammonia on the health status of Acropora sp., Turbinaria sp., and Porites sp. by using acute toxicity testing (50% Lethal Concentration: LC50). The acute effects were monitored at temperatures of 30°C and 33°C at 24 and 48 hrs. The concentrations of ammonia varied at 0 0.05 0.07 and 0.1 mgN/L, respectively. The active polyp percentages of Acropora sp. was analyzed with comparison to the health status percentages. According to the findings at 30°C (24 and 48 hrs) and 33°C (24 hrs), the LC50 could not be investigated because the mortality percentages was not below 50%. On the other hand, at 33°C (48 hrs), the LC50 could be evaluated because the mortality percentages exceeded 50%. Therefore, the LC50 at 48 hrs of Acropora sp., Turbinaria sp., and Porites sp. were equal to 0.043, 0.075 and 0.054 mgN/L, respectively.