Bacterial growth in supercooled cloud droplets

被引:265
作者
Sattler, B
Puxbaum, H
Psenner, R
机构
[1] Univ Innsbruck, Inst Zool & Limnol, A-6020 Innsbruck, Austria
[2] Vienna Univ Technol, Inst Analyt Chem, A-1060 Vienna, Austria
关键词
D O I
10.1029/2000GL011684
中图分类号
P [天文学、地球科学];
学科分类号
07 ;
摘要
It is well known that the atmosphere is a conveyor of microorganisms, and that bacteria can act as ice or cloud condensation nuclei, but clouds have not been considered as a site where organisms can live and reproduce. Here we show that bacteria in cloud droplets collected at high altitudes are actively growing and reproducing at temperatures at or below 0 degreesC. Since similar to 60% of the earth surface is covered by clouds, cloud water should be considered as a microbial habitat.
引用
收藏
页码:239 / 242
页数:4
相关论文
共 40 条
[1]   Community analysis of the bacterial assemblages in the winter cover and pelagic layers of a high mountain lake by in situ hybridization [J].
Alfreider, A ;
Pernthaler, J ;
Amann, R ;
Sattler, B ;
Glockner, FO ;
Wille, A ;
Psenner, R .
APPLIED AND ENVIRONMENTAL MICROBIOLOGY, 1996, 62 (06) :2138-2144
[2]   Groundwater samples do not reflect bacterial densities and activity in subsurface systems [J].
Alfreider, A ;
Krossbacher, M ;
Psenner, R .
WATER RESEARCH, 1997, 31 (04) :832-840
[3]  
[Anonymous], 1978, Microphysics of Clouds and Precipitation, DOI 10.1007/978-94-009-9905-3
[4]  
BRANTNER B, 1994, WATER AIR SOIL POLL, V74, P363
[5]  
BRYANT E, 1997, CLIMATE PROCESS CHAN, P225
[6]   Biological micro-particles in rain water [J].
Casareto, BE ;
Suzuki, Y ;
Okada, K ;
Morita, M .
GEOPHYSICAL RESEARCH LETTERS, 1996, 23 (02) :173-176
[7]   EVIDENCE FOR MORE THAN ONE DIVISION OF BACTERIA WITHIN AIRBORNE PARTICLES [J].
DIMMICK, RL ;
WOLOCHOW, H ;
CHATIGNY, MA .
APPLIED AND ENVIRONMENTAL MICROBIOLOGY, 1979, 38 (04) :642-643
[8]   Biogeochemical controls and feedbacks on ocean primary production [J].
Falkowski, PG ;
Barber, RT ;
Smetacek, V .
SCIENCE, 1998, 281 (5374) :200-206
[9]   HIGHLY-ACTIVE MICROBIAL COMMUNITIES IN THE ICE AND SNOW COVER OF HIGH-MOUNTAIN LAKES [J].
FELIP, M ;
SATTLER, B ;
PSENNER, R ;
CATALAN, J .
APPLIED AND ENVIRONMENTAL MICROBIOLOGY, 1995, 61 (06) :2394-2401
[10]   Fog droplets - An atmospheric source of secondary biological aerosol particles [J].
Fuzzi, S ;
Mandrioli, P ;
Perfetto, A .
ATMOSPHERIC ENVIRONMENT, 1997, 31 (02) :287-290