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Seasonal drivers of productivity and calcification in the coral Platygyra carnosa in a subtropical reef

التفاصيل البيبلوغرافية
العنوان: Seasonal drivers of productivity and calcification in the coral Platygyra carnosa in a subtropical reef
المؤلفون: Walter Dellisanti, Jeffery T. H. Chung, Sam K. F. Yiu, Ryan Ho Leung Tsang, Put Ang, Yip Hung Yeung, Jian-Wen Qiu, Shelby E. McIlroy, Mark L. Wells, Jiajun Wu, Leo Lei Chan
المصدر: Frontiers in Marine Science, Vol 10 (2023)
بيانات النشر: Frontiers Media S.A., 2023.
سنة النشر: 2023
المجموعة: LCC:Science
LCC:General. Including nature conservation, geographical distribution
مصطلحات موضوعية: coral physiology, metabolic performance, metabolic rates, phenotypic plasticity, subtropical corals, Science, General. Including nature conservation, geographical distribution, QH1-199.5
الوصف: Scleractinian corals are increasingly subjected to local stressors combined with global changes. In subtropical areas, corals exhibit metabolic plasticity and resilience in response to variability and extremes in local temperature, salinity, and light; however, the physiological mechanisms by which corals acclimate or adapt to these changing conditions remain disputed. We assessed the physiological status of the coral Platygyra carnosa during a two-year in situ monitoring survey. To obtain metabolic rates (respiration and photosynthesis), photochemical efficiency (Fv / Fm), and biocalcification measurements, non-invasive techniques such as underwater respirometry, Pulse Amplitude Modulated (PAM) fluorometry, total alkalinity measurements, and digital photography were used. Our findings show clear seasonality in water quality parameters, which affected coral health. Elevated temperatures during the summer were below the maximum monthly mean < 31°C) but reduced the energetic productivity of corals (-44% relative to winter). Fluctuations in salinity (25–38 ppt) and pH (7.65–8.44) were linked to rainfall and reduced calcification rates. The conditions during the spring were favorable for coral metabolism and calcification (+20% relative to summer). Overall, our research demonstrates that the metabolic plasticity of P. carnosa in response to shifts in seawater quality allows this species to survive ongoing environmental change. Our in situ observations provide fundamental insights into coral response mechanisms under changing environmental conditions and contribute to projections of coral health under future scenarios of global change.
نوع الوثيقة: article
وصف الملف: electronic resource
اللغة: English
تدمد: 2296-7745
Relation: https://www.frontiersin.org/articles/10.3389/fmars.2023.994591/full; https://doaj.org/toc/2296-7745
DOI: 10.3389/fmars.2023.994591
URL الوصول: https://doaj.org/article/04f38868e70a42b4a24e1b99186f7ff7
رقم الأكسشن: edsdoj.04f38868e70a42b4a24e1b99186f7ff7
قاعدة البيانات: Directory of Open Access Journals
الوصف
تدمد:22967745
DOI:10.3389/fmars.2023.994591