DOI: 10.1007/s13131-020-1548-6
论文题名: Response of coralline algae Porolithon onkodes to elevated seawater temperature and reduced pH
作者: Lei X. ; Jiang L. ; Zhang Y. ; Zhou G. ; Lian J. ; Huang H.
刊名: Acta Oceanologica Sinica
ISSN: 0253505X
出版年: 2020
卷: 39, 期: 2 语种: 英语
英文关键词: crustose coralline algae
; effects
; elevated temperature
; reduced pH
; response
英文摘要: Coralline algae (CA), a type of primary calcifying producer presented in coastal ecosystems, are considered one of the highly sensitive organisms to marine environmental change. However, experimental studies on coralline algae responses to elevated seawater temperature and reduced pH have documented either contradictory or opposite results. In this study, we analysed the growth and physiological responses of coralline algae Porolithon onkodes to the elevated temperature (30.8°C) and reduced pH (7.8). The aim of this analysis was to observe the direct and combined effects, while elucidating the growth and photosynthesis in this response. It was demonstrated that the algae thallus growth rate and photosynthesis under elevated temperature were depressed by 21.5% and 14.9% respectively. High pCO2 enhanced the growth and photosynthesis of the thallus at ambient temperature, while they were deceased when both temperature and pCO2 were elevated. CA is among the most sensitive organisms to ocean acidification (OA) because of their precipitate high Mg-calcite. We hypothesize that coralline algae could increase their calcification rate in order to counteract the effects of moderate acidification, but offset by the effect of elevated temperature. Accordingly, our results also support the conclusion that global warming (GW) is a stronger threat to algal performance than OA. Our findings are also proposed that coralline algae may be more resilient under OA than GW. © 2020, Chinese Society for Oceanography and Springer-Verlag GmbH Germany, part of Springer Nature. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/159924
Appears in Collections: 气候变化与战略
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作者单位: CAS Key Laboratory of Tropical Marine Bio-resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, 510301, China; Innovation Academy of South China Sea Ecology and Environmental Engineering, Chinese Academy of Sciences, Guangzhou, 510301, China; CAS Tropical Marine Biological Research Station in Hainan, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Sanya, 572000, China
Recommended Citation:
Lei X.,Jiang L.,Zhang Y.,et al. Response of coralline algae Porolithon onkodes to elevated seawater temperature and reduced pH[J]. Acta Oceanologica Sinica,2020-01-01,39(2)