气候变化领域集成服务门户(CCPortal): Seawater carbonate chemistry and fatty acid content of plankton

CCPortal

DOI	https://doi.org/10.1594/PANGAEA.890803
	Seawater carbonate chemistry and fatty acid content of plankton
	Wang; Tifeng; Tong; Shanying; Liu; Nana; Li; Futian; Wells; Mark L; Gao; Kunshan
发布日期	2018-06-07
数据集类型	dataset
英文关键词	Behaviour ; Biomass/Abundance/Elemental composition ; Coast and continental shelf ; Entire community ; Field experiment ; Mesocosm or benthocosm ; North Pacific ; North Pacific ; Pelagos ; Temperate
英文简介	Ocean Acidification (OA) effects on marine plankton are most often considered in terms of inorganic carbon chemistry, but decreasing pH may influence other aspects of cellular metabolism. Here we present the effects of OA on the fatty acid (FA) content and composition of an artificial phytoplankton community (Phaeodactylum tricornutum, Thalassiosira weissflogii, and Emiliania huxleyi) in a fully replicated, 4 m**3 mesocosm study in subtropical coastal waters (Wuyuan Bay, China, 24.52°N, 117.18°E) at present day (400 μatm) and elevated (1000 μatm) pCO2 concentrations. Phytoplankton growth occurred in three phases during the 33-day experiment: an initial exponential growth leading to senescence and a subsequent decline phase. Phytoplankton sampled from these mesocosms were fed to mesozooplankton collected by net haul from Wuyuan Bay. Concentrations of saturated fatty acids (SFA) in both phytoplankton and mesozooplankton remained high under acidified and non-acidified conditions. However, polyunsaturated fatty acids (PUFA) and monounsaturated fatty acids (MUFA) increased significantly more under elevated pCO2 during the late exponential phase (Day 13), indicating increased nutritional value for zooplankton and higher trophic levels. Indeed, uptake rates of the essential FA docosahexaenoic acid (C20:5n3, DHA) increased in mesozooplankton under acidified conditions. However, mesozooplankton grazing rates decreased overall with elevated pCO2. Our findings show that these selected phytoplankton species have a relatively high tolerance to acidification in terms of FA production, and local mesozooplankton in these subtropical coastal waters can maintain their FA composition under end of century ocean acidification conditions.
空间范围	Latitude: 24.520000 * Longitude: 118.200000
时间范围	2013-06-15T00:00:00 - 2013-06-15T00:00:00
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/216154
推荐引用方式 GB/T 7714	Wang,Tifeng,Tong,et al. Seawater carbonate chemistry and fatty acid content of plankton.2018-06-07.https://doi.org/10.1594/PANGAEA.890803.