气候变化领域集成服务门户(CCPortal): Secondary calcification and dissolution respond differently to future ocean conditions

CCPortal

DOI	https://doi.org/10.1594/PANGAEA.846682
	Secondary calcification and dissolution respond differently to future ocean conditions
	Silbiger; N J; Donahue; M J
发布日期	2015-06-03
数据集类型	dataset
英文关键词	Benthos ; Calcification/Dissolution ; Coast and continental shelf ; Containers and aquaria (20- 1000 L or &lt ; 1 m**2) ; Entire community ; Laboratory experiment ; North Pacific ; Primary production/Photosynthesis ; Rocky-shore community ; Temperature ; Tropical
英文简介	Climate change threatens both the accretion and erosion processes that sustain coral reefs. Secondary calcification, bioerosion, and reef dissolution are integral to the structural complexity and long-term persistence of coral reefs, yet these processes have received less research attention than reef accretion by corals. In this study, we use climate scenarios from RCP 8.5 to examine the combined effects of rising ocean acidity and sea surface temperature (SST) on both secondary calcification and dissolution rates of a natural coral rubble community using a flow-through aquarium system. We found that secondary reef calcification and dissolution responded differently to the combined effect of pCO2 and temperature. Calcification had a non-linear response to the combined effect of pCO2 and temperature: the highest calcification rate occurred slightly above ambient conditions and the lowest calcification rate was in the highest temperature-pCO2 condition. In contrast, dissolution increased linearly with temperature-pCO2 . The rubble community switched from net calcification to net dissolution at +271 µatm pCO2 and 0.75 °C above ambient conditions, suggesting that rubble reefs may shift from net calcification to net dissolution before the end of the century. Our results indicate that (i) dissolution may be more sensitive to climate change than calcification and (ii) that calcification and dissolution have different functional responses to climate stressors; this highlights the need to study the effects of climate stressors on both calcification and dissolution to predict future changes in coral reefs.
空间范围	Latitude: 21.433000 * Longitude: -157.786000
时间范围	2011-03-31T00:00:00 - 2012-04-10T00:00:00
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/217101
推荐引用方式 GB/T 7714	Silbiger,N J,Donahue,et al. Secondary calcification and dissolution respond differently to future ocean conditions.2015-06-03.https://doi.org/10.1594/PANGAEA.846682.