Dynamics of phytoplankton community structure in the South China Sea in response to the East Asian aerosol input

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

	Dynamics of phytoplankton community structure in the South China Sea in response to the East Asian aerosol input
	Guo, C.1; Yu, J.2,3; Ho, T. -Y.4; Wang, L.5 ; Song, S.6; Kong, L.1; Liu, H.1
刊名	BIOGEOSCIENCES
	2012
卷号	9 期号:4 页码:1519-1536
关键词	ATMOSPHERIC NITROGEN DEPOSITION NORTHWEST PACIFIC-OCEAN SUB-ARCTIC PACIFIC ATLANTIC-OCEAN MARINE-PHYTOPLANKTON SAHARAN DUST BIOLOGICAL PRODUCTION EQUATORIAL PACIFIC MEDITERRANEAN SEA IRON ENRICHMENT
ISSN号	1726-4170
通讯作者	Liu, H (reprint author), Hong Kong Univ Sci & Technol, Div Life Sci, Hong Kong, Hong Kong, Peoples R China.
英文摘要	Recent studies have demonstrated atmospheric deposition as an important source of bioreactive compounds to the ocean. The South China Sea (SCS), where aerosol loading is among the highest in the world, however, is poorly studied, particularly on the in situ response of phytoplankton community structures to atmospheric deposition. By conducting a series of microcosm bioassays at different hydrographical locations and simulating different aerosol event scales, we observed both positive and negative responses to the input of East Asian (EA) aerosol with high nitrogen (N) and trace metal contents, in terms of biomass, composition and physiological characteristics of phytoplankton communities. High levels of aerosol loading relieved phytoplankton nitrogen and trace metal limitations in SCS, and thus increased total phytoplankton biomass, enhanced their physiological indicators (e.g. photosynthetic efficiency) and shifted phytoplankton assemblages from being dominated by picoplankton to microphytoplanton, especially diatoms. However, under low levels of aerosol loading, the composition shift and biomass accumulation were not apparent, suggesting that the stimulation effects might be counterbalanced by enhanced grazing mortality indicated by increased abundance of protist grazers. Trace metal toxicity of the aerosols might also be the reason for the reduction of picocyanobacteria when amended with high EA aerosols. The magnitude and duration of the deposition event, as well as the hydrographical and trophic conditions of receiving waters are also important factors when predicting the influence of an aerosol deposition event. Our results demonstrated different responses of phytoplankton and microbial food web dynamics to different scales of atmospheric input events in SCS and highlighted the need for achieving an accurate comprehension of atmospheric nutrient on the biogeochemical cycles of the oceans.
学科主题	Ecology ; Geosciences, Multidisciplinary
收录类别	SCI
原文出处	10.5194/bg-9-1519-2012
语种	英语
WOS记录号	WOS:000304049800018
公开日期	2013-09-24
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/12423]
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.Hong Kong Univ Sci & Technol, Div Life Sci, Hong Kong, Hong Kong, Peoples R China 2.Hong Kong Univ Sci & Technol, Div Environm, Hong Kong, Hong Kong, Peoples R China 3.Hong Kong Univ Sci & Technol, Dept Chem, Hong Kong, Hong Kong, Peoples R China 4.Acad Sinica, Res Ctr Environm Changes, Taipei 115, Taiwan 5.Xiamen Univ, State Key Lab Marine Environm Sci, Xiamen, Peoples R China 6.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Ecol & Environm Sci, Qingdao, Peoples R China
推荐引用方式 GB/T 7714	Guo, C.,Yu, J.,Ho, T. -Y.,et al. Dynamics of phytoplankton community structure in the South China Sea in response to the East Asian aerosol input[J]. BIOGEOSCIENCES,2012,9(4):1519-1536.
APA	Guo, C..,Yu, J..,Ho, T. -Y..,Wang, L..,Song, S..,...&Liu, H..(2012).Dynamics of phytoplankton community structure in the South China Sea in response to the East Asian aerosol input.BIOGEOSCIENCES,9(4),1519-1536.
MLA	Guo, C.,et al."Dynamics of phytoplankton community structure in the South China Sea in response to the East Asian aerosol input".BIOGEOSCIENCES 9.4(2012):1519-1536.