Distribution of calcifying and silicifying phytoplankton in relation to environmental and biogeochemical parameters during the late stages of the 2005 North East Atlantic Spring Bloom

CORC > 海洋研究所 > 中国科学院海洋研究所 > 海洋生态与环境科学重点实验室

	Distribution of calcifying and silicifying phytoplankton in relation to environmental and biogeochemical parameters during the late stages of the 2005 North East Atlantic Spring Bloom
	Leblanc, K.1,2,3,4; Hare, C. E.5; Feng, Y.6; Berg, G. M.7; DiTullio, G. R.8; Neeley, A.9; Benner, I.10,11; Sprengel, C.10; Beck, A.12; Sanudo-Wilhelmy, S. A.13
刊名	BIOGEOSCIENCES
	2009
卷号	6 期号:10 页码:2155-2179
关键词	Transparent Exopolymer Particles Marine-phytoplankton Emiliania-huxleyi Increased Pco(2) Northeastern Atlantic Coccolithophore Bloom Spatial Variability Particulate Matter Upwelling Regime Oceanic Waters
ISSN号	1726-4170
文献子类	Article
英文摘要	The late stage of the North East Atlantic (NEA) spring bloom was investigated during June 2005 along a transect section from 45 to 66 degrees N between 15 and 20 degrees W in order to characterize the contribution of siliceous and calcareous phytoplankton groups and describe their distribution in relation to environmental factors. We measured several biogeochemical parameters such as nutrients, surface trace metals, algal pigments, biogenic silica (BSi), particulate inorganic carbon (PIC) or calcium carbonate, particulate organic carbon, nitrogen and phosphorus (POC, PON and POP, respectively), as well as transparent exopolymer particles (TEP). Results were compared with other studies undertaken in this area since the JGOFS NABE program. Characteristics of the spring bloom generally agreed well with the accepted scenario for the development of the autotrophic community. The NEA seasonal diatom bloom was in the late stages when we sampled the area and diatoms were constrained to the northern part of our transect, over the Icelandic Basin (IB) and Icelandic Shelf (IS). Coccolithophores dominated the phytoplankton community, with a large distribution over the Rockall-Hatton Plateau (RHP) and IB. The Porcupine Abyssal Plain (PAP) region at the southern end of our transect was the region with the lowest biomass, as demonstrated by very low Chla concentrations and a community dominated by picophytoplankton. Early depletion of dissolved silicic acid (DSi) and increased stratification of the surface layer most likely triggered the end of the diatom bloom, leading to coccolithophore dominance. The chronic Si deficiency observed in the NEA could be linked to moderate Fe limitation, which increases the efficiency of the Si pump. TEP closely mirrored the distribution of both biogenic silica at depth and prymnesiophytes in the surface layer suggesting the sedimentation of the diatom bloom in the form of aggregates, but the relative contribution of diatoms and coccolithophores to carbon export in this area still needs to be resolved.; The late stage of the North East Atlantic (NEA) spring bloom was investigated during June 2005 along a transect section from 45 to 66 degrees N between 15 and 20 degrees W in order to characterize the contribution of siliceous and calcareous phytoplankton groups and describe their distribution in relation to environmental factors. We measured several biogeochemical parameters such as nutrients, surface trace metals, algal pigments, biogenic silica (BSi), particulate inorganic carbon (PIC) or calcium carbonate, particulate organic carbon, nitrogen and phosphorus (POC, PON and POP, respectively), as well as transparent exopolymer particles (TEP). Results were compared with other studies undertaken in this area since the JGOFS NABE program. Characteristics of the spring bloom generally agreed well with the accepted scenario for the development of the autotrophic community. The NEA seasonal diatom bloom was in the late stages when we sampled the area and diatoms were constrained to the northern part of our transect, over the Icelandic Basin (IB) and Icelandic Shelf (IS). Coccolithophores dominated the phytoplankton community, with a large distribution over the Rockall-Hatton Plateau (RHP) and IB. The Porcupine Abyssal Plain (PAP) region at the southern end of our transect was the region with the lowest biomass, as demonstrated by very low Chla concentrations and a community dominated by picophytoplankton. Early depletion of dissolved silicic acid (DSi) and increased stratification of the surface layer most likely triggered the end of the diatom bloom, leading to coccolithophore dominance. The chronic Si deficiency observed in the NEA could be linked to moderate Fe limitation, which increases the efficiency of the Si pump. TEP closely mirrored the distribution of both biogenic silica at depth and prymnesiophytes in the surface layer suggesting the sedimentation of the diatom bloom in the form of aggregates, but the relative contribution of diatoms and coccolithophores to carbon export in this area still needs to be resolved.
学科主题	Ecology ; Geosciences, Multidisciplinary
语种	英语
WOS记录号	WOS:000271354900014
公开日期	2010-12-22
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/2613]
专题	海洋研究所_海洋生态与环境科学重点实验室
作者单位	1.Univ Aix Marseille, F-13288 Marseille 09, France 2.CNRS, F-13288 Marseille 09, France 3.LOPB, UMR 6535, F-13288 Marseille 09, France 4.OSU Ctr Oceanol Marseille, UMR 6535, F-13288 Marseille 09, France 5.Woods Hole Grp Inc, Dover, DE 19901 USA 6.Chinese Acad Sci, Inst Oceanol, Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China 7.Stanford Univ, Dept Environm Earth Syst Sci, Stanford, CA 94305 USA 8.Coll Charleston, Hollings Marine Lab, Charleston, SC 29412 USA 9.NASA SSAI BWTech, Halethorpe, MD 21227 USA 10.Alfred Wegener Inst Polar & Marine Res, D-27570 Bremerhaven, Germany
推荐引用方式 GB/T 7714	Leblanc, K.,Hare, C. E.,Feng, Y.,et al. Distribution of calcifying and silicifying phytoplankton in relation to environmental and biogeochemical parameters during the late stages of the 2005 North East Atlantic Spring Bloom[J]. BIOGEOSCIENCES,2009,6(10):2155-2179.
APA	Leblanc, K..,Hare, C. E..,Feng, Y..,Berg, G. M..,DiTullio, G. R..,...&Hutchins, D. A..(2009).Distribution of calcifying and silicifying phytoplankton in relation to environmental and biogeochemical parameters during the late stages of the 2005 North East Atlantic Spring Bloom.BIOGEOSCIENCES,6(10),2155-2179.
MLA	Leblanc, K.,et al."Distribution of calcifying and silicifying phytoplankton in relation to environmental and biogeochemical parameters during the late stages of the 2005 North East Atlantic Spring Bloom".BIOGEOSCIENCES 6.10(2009):2155-2179.