干旱区生态环境知识资源中心(Arid): Saharan dust deposition initiates successional patterns among marine microbes in the Western Atlantic

Arid

DOI	10.1002/lno.11291
	Saharan dust deposition initiates successional patterns among marine microbes in the Western Atlantic
	Borchardt, Trace 1; Fisher, Kelsey, V 2; Ebling, Alina M.3; Westrich, Jason R.4; Xian, Peng 5; Holmes, Christopher D.3; Landing, William M.3; Lipp, Erin K.4; Wetz, Michael S.6; Ottesen, Elizabeth A.1
通讯作者	Ottesen, Elizabeth A.
来源期刊	LIMNOLOGY AND OCEANOGRAPHY
ISSN	0024-3590
EISSN	1939-5590
出版年	2020
卷号	65 期号:1 页码:191-203
英文摘要	Deposition of aerosolized desert dust can affect marine microbial community structure and function through pulsed addition of limiting micro- and macronutrients. However, few studies have captured responses to dust deposition in situ following trans-oceanic transport. We conducted a 26-d time series evaluating biogeochemical and microbial community response to Saharan dust deposition in surface waters in the subtropical western Atlantic (Florida Keys National Marine Sanctuary, U.S.A.). Following periods of elevated atmospheric dust concentrations, particulate and dissolved iron concentrations increased in surface waters. Autotrophic picoeukaryote abundance increased rapidly, followed by increases in the abundance of heterotrophic bacteria and Synechococcus. Concomitant to cell count changes, we observed successional shifts in bacterial community composition. The relative abundances of Prochlorococcus and Pelagibacter declined with dust arrival, while relative abundance of heterotrophic bacteria increased, beginning with Vibrionales and followed sequentially by Chrysophyceae, Rhodobacteriaceae, and Flavobacteriaceae. Finally, a peak in Synechococcus cyanobacteria was observed. These results provide new insight into microbial community succession in response to Saharan dust deposition, their association with temporal dynamics in surface water dissolved and particulate iron concentrations, and a potential role for bioprocessing of dust particles in shaping marine microbial responses to deposition events.
类型	Article
语种	英语
国家	USA
开放获取类型	hybrid
收录类别	SCI-E
WOS记录号	WOS:000480094800001
WOS关键词	RNA GENE DATABASE ; MESOCOSM EXPERIMENT ; AFRICAN DUST ; DYNAMICS ; AEROSOLS ; COMMUNITY ; ECOSYSTEM ; IMPACT ; GROWTH ; VIBRIO
WOS类目	Limnology ; Oceanography
WOS研究方向	Marine & Freshwater Biology ; Oceanography
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/217508
作者单位	1.Univ Georgia, Dept Microbiol, Athens, GA 30602 USA; 2.Texas A&M Univ Corpus Christi, Dept Life Sci, Corpus Christi, TX USA; 3.Florida State Univ, Dept Earth Ocean & Atmospher Sci, Tallahassee, FL 32306 USA; 4.Univ Georgia, Dept Environm Hlth Sci, Athens, GA 30602 USA; 5.US Naval Res Lab, Washington, DC USA; 6.Texas A&M Univ Corpus Christi, Harte Res Inst Gulf Mexico Studies, Corpus Christi, TX USA
推荐引用方式 GB/T 7714	Borchardt, Trace,Fisher, Kelsey, V,Ebling, Alina M.,et al. Saharan dust deposition initiates successional patterns among marine microbes in the Western Atlantic[J],2020,65(1):191-203.
APA	Borchardt, Trace.,Fisher, Kelsey, V.,Ebling, Alina M..,Westrich, Jason R..,Xian, Peng.,...&Ottesen, Elizabeth A..(2020).Saharan dust deposition initiates successional patterns among marine microbes in the Western Atlantic.LIMNOLOGY AND OCEANOGRAPHY,65(1),191-203.
MLA	Borchardt, Trace,et al."Saharan dust deposition initiates successional patterns among marine microbes in the Western Atlantic".LIMNOLOGY AND OCEANOGRAPHY 65.1(2020):191-203.