Arid
DOI10.3389/fmars.2018.00012
Vibrio Population Dynamics in Mid-Atlantic Surface Waters during Saharan Dust Events
Westrich, Jason R.1,2; Griffin, Dale W.3; Westphal, Douglas L.4; Lipp, Erin K.1
通讯作者Lipp, Erin K.
来源期刊FRONTIERS IN MARINE SCIENCE
EISSN2296-7745
出版年2018
卷号5
英文摘要

Vibrio is a cosmopolitan genus of marine bacteria, highly investigated in coastal and estuarine environments. Vibrio have also been isolated from pelagic waters, yet very little is known about the ecology of these oligotrophic species. In this study we examined the relative change in bacterial abundance and more specifically the dynamics of Vibrio in the tropical North Atlantic in response to the arrival of pulses of Saharan dust aerosols, a major source of biologically important nutrients for downwind marine surface waters. Aerosol and surface water samples were collected over 1 month coinciding with at least two distinct dust events. Total bacterial counts increased by 1.6-fold correlating with the arrival of Saharan dust (r = 0.76; p = 0.001). Virus-like particles (VLP) also followed this trend and were correlated with bacterial counts (r = 0.67; p = 0.01). Vibrio specific qPCR targeting the 16S rRNA gene ranged from below detection limits to a high of 9,145 gene copies ml(-1) with the arrival of dust. This increase equated to 6.5 x 10(2)-1.5 x 10(3) individual genome equivalents ml(-1) based on the known range of 16S rRNA copies among this genus. Vibrio exhibited bloom-bust cycles potentially attributed to selective viral lysis or bloom depletion of organic carbon. This work is one of the few studies to examine the open ocean ecology of Vibrio, a conditionally rare taxon, whose bloom-bust lifestyle likely is a contributing factor in the flow of nutrients and energy in pelagic ecosystems.


英文关键词conditionally rare taxa oligotrophic conditions aerosols desert dust Vibrio marine ecology
类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:000456919200001
WOS关键词MARINE BACTERIUM ; DESERT DUST ; IRON ; DIFFERENTIATION ; VIRUSES ; GROWTH
WOS类目Environmental Sciences ; Marine & Freshwater Biology
WOS研究方向Environmental Sciences & Ecology ; Marine & Freshwater Biology
来源机构United States Geological Survey
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/209417
作者单位1.Univ Georgia, Dept Environm Hlth Sci, Athens, GA 30602 USA;
2.Univ Georgia, Odum Sch Ecol, Athens, GA 30602 USA;
3.US Geol Survey, St Petersburg, FL USA;
4.Naval Res Lab, Marine Meteorol Div, Monterey, CA USA
推荐引用方式
GB/T 7714
Westrich, Jason R.,Griffin, Dale W.,Westphal, Douglas L.,et al. Vibrio Population Dynamics in Mid-Atlantic Surface Waters during Saharan Dust Events[J]. United States Geological Survey,2018,5.
APA Westrich, Jason R.,Griffin, Dale W.,Westphal, Douglas L.,&Lipp, Erin K..(2018).Vibrio Population Dynamics in Mid-Atlantic Surface Waters during Saharan Dust Events.FRONTIERS IN MARINE SCIENCE,5.
MLA Westrich, Jason R.,et al."Vibrio Population Dynamics in Mid-Atlantic Surface Waters during Saharan Dust Events".FRONTIERS IN MARINE SCIENCE 5(2018).
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