气候变化领域集成服务门户(CCPortal): Seawater carbon chemistry and growth rate, mortality, fitness of cold-water coral Lophelia pertusa

CCPortal

DOI	https://doi.org/10.1594/PANGAEA.878048
	Seawater carbon chemistry and growth rate, mortality, fitness of cold-water coral Lophelia pertusa
	Büscher; Janina; Form; Armin; Riebesell; Ulf
发布日期	2017-07-21
数据集类型	dataset
英文关键词	Animalia ; Benthic animals ; Benthos ; Cnidaria ; Containers and aquaria (20- 1000 L or &lt ; 1 m**2) ; Deep-sea ; Growth/Morphology ; Laboratory experiment ; Lophelia pertusa ; Mortality/Survival ; North Atlantic ; Other ; Other studied parameter or process ; Single species ; Temperate ; Temperature
英文简介	Cold-water corals are important bioengineers that provide structural habitat for a diverse species community. About 70 % of the presently known scleractinian cold-water corals are expected to be exposed to corrosive waters by the end of this century due to ocean acidification. At the same time, the corals will experience a steady warming of their environment. Studies on the sensitivity of cold-water corals to climate change mainly concentrated on single stressors in short-term incubation approaches, thus not accounting for possible long-term acclimatisation and the interactive effects of multiple stressors. Besides, preceding studies did not test for possible compensatory effects of a change in food availability. In this study a multifactorial long-term experiment (6 months) was conducted with end-of-the-century scenarios of elevated pCO2 and temperature levels in order to examine the acclimatisation potential of the cosmopolitan cold-water coral Lophelia pertusa to future climate change related threats. For the first time multiple ocean change impacts including the role of the nutritional status were tested on L. pertusa with regard to growth, 'fitness', and survival. Our results show that while L. pertusa is capable of calcifying under elevated CO2 and temperature, its condition (fitness) is more strongly influenced by food availability rather than changes in seawater chemistry. Whereas growth rates increased at elevated temperature (+ 4°C), they decreased under elevated CO2 concentrations (800 µatm). No difference in net growth was detected when corals were exposed to the combination of increased CO2 and temperature compared to ambient conditions. A 10-fold higher food supply stimulated growth under elevated temperature, which was not observed in the combined treatment. This indicates that increased food supply does not compensate for adverse effects of ocean acidification and underlines the importance of considering the nutritional status in studies investigating organism responses under environmental changes.
空间范围	Latitude: 63.606670 * Longitude: 9.378330
时间范围	2011-09-01T00:00:00 - 2011-09-30T00:00:00
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/216458
推荐引用方式 GB/T 7714	Büscher,Janina,Form,et al. Seawater carbon chemistry and growth rate, mortality, fitness of cold-water coral Lophelia pertusa.2017-07-21.https://doi.org/10.1594/PANGAEA.878048.