气候变化领域集成服务门户(CCPortal): Ocean acidification rapidly reduces dinitrogen fixation associated with the hermatypic coral Seriatopora hystrix

CCPortal

DOI	https://doi.org/10.1594/PANGAEA.843730
	Ocean acidification rapidly reduces dinitrogen fixation associated with the hermatypic coral Seriatopora hystrix
	Rädecker; Nils; Meyer; Friedrich Wilhelm; Bednarz; Vanessa N; Cardini; Ulisse; Wild; Christian
发布日期	2014-03-06
数据集类型	dataset
英文关键词	Animalia ; Benthic animals ; Benthos ; Bottles or small containers/Aquaria ( 20 L) ; Calcification/Dissolution ; Cnidaria ; Coast and continental shelf ; Growth/Morphology ; Laboratory experiment ; Other metabolic rates ; Seriatopora hystrix ; Single species ; South Pacific ; Tropical
英文简介	Since productivity and growth of coral-associated dinoflagellate algae is nitrogen (N)-limited, dinitrogen (N2) fixation by coral-associated microbes is likely crucial for maintaining the coral-dinoflagellate symbiosis. It is thus essential to understand the effects future climate change will have on N2 fixation by the coral holobiont. This laboratory study is the first to investigate short-term effects of ocean acidification on N2 fixation activity associated with the tropical, hermatypic coral Seriatopora hystrix using the acetylene reduction assay in combination with calcification measurements. Findings reveal that simulated ocean acidification ( pCO2 1080 µatm) caused a rapid and significant decrease (53%) in N2 fixation rates associated with S. hystrix compared to the present day scenario ( pCO2 486 µatm). In addition, N2 fixation associated with the coral holobiont showed a positive exponential relationship with its calcification rates. This suggests that even small declines in calcification rates of hermatypic corals under high CO2 conditions may result in decreased N2 fixation activity, since these 2 processes may compete for energy in the coral holobiont. Ultimately, an intensified N limitation in combination with a decline in skeletal growth may trigger a negative feedback loop on coral productivity exacerbating the negative long-term effects of ocean acidification.
语种	英语
国家	国际
学科大类	气候变化
学科子类	气候变化
文献类型	数据集
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/217171
推荐引用方式 GB/T 7714	Rädecker,Nils,Meyer,et al. Ocean acidification rapidly reduces dinitrogen fixation associated with the hermatypic coral Seriatopora hystrix.2014-03-06.https://doi.org/10.1594/PANGAEA.843730.