气候变化领域集成服务门户(CCPortal): Environmental controls on the Emiliania huxleyi calcite mass

CCPortal

DOI	https://doi.org/10.1594/PANGAEA.832340
	Environmental controls on the Emiliania huxleyi calcite mass
	Horigome; Mariana Tatsumi; Ziveri; Patrizia; Grelaud; Michaël; Baumann; Karl-Heinz; Marino; Gianluca; Mortyn; P G
发布日期	2014-05-07
数据集类型	dataset
英文关键词	Calcification/Dissolution ; Chromista ; Emiliania huxleyi ; Field observation ; Haptophyta ; Indian Ocean ; Open ocean ; Pelagos ; Phytoplankton ; Single species ; South Atlantic ; Temperate ; Tropical
英文简介	Although ocean acidification is expected to impact (bio)calcification by decreasing the seawater carbonate ion concentration, [CO3]2-, there exists evidence of non-uniform response of marine calcifying plankton to low seawater [CO3]2-. This raises questions on the role of environmental factors other than acidification and on the complex physiological responses behind calcification. Here we investigate the synergistic effect of multiple environmental parameters, including temperature, nutrient (nitrate and phosphate) availability, and seawater carbonate chemistry on the coccolith calcite mass of the cosmopolitan coccolithophore Emiliania huxleyi, the most abundant species in the world ocean. We use a suite of surface (late Holocene) sediment samples from the South Atlantic and southwestern Indian Ocean taken from depths lying well above the modern lysocline. The coccolith calcite mass in our results presents a latitudinal distribution pattern that mimics the main oceanographic features, thereby pointing to the potential importance of phosphorus and temperature in determining coccolith mass by affecting primary calcification and possibly driving the E. huxleyi morphotype distribution. This evidence does not necessarily argue against the potentially important role of the rapidly changing seawater carbonate chemistry in the future, when unabated fossil fuel burning will likely perturb ocean chemistry beyond a critical point. Rather our study highlights the importance of evaluating the combined effect of several environmental stressors on calcifying organisms to project their physiological response(s) in a high CO2 world and improve interpretation of paleorecords.
空间范围	Median Latitude: -28.808414 * Median Longitude: 2.909865 * South-bound Latitude: -53.220000 * West-bound Longitude: -24.248300 * North-bound Latitude: 1.790000 * East-bound Longitude: 40.868333
时间范围	1989-03-13T00:00:00 - 2004-01-05T00:00:00
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/217499
推荐引用方式 GB/T 7714	Horigome,Mariana Tatsumi,Ziveri,et al. Environmental controls on the Emiliania huxleyi calcite mass.2014-05-07.https://doi.org/10.1594/PANGAEA.832340.