气候变化领域集成服务门户(CCPortal): Relative abundances and microbial numbers of organisms from water sample station GeoB15704-2

CCPortal

DOI	https://doi.org/10.1594/PANGAEA.846188
	Relative abundances and microbial numbers of organisms from water sample station GeoB15704-2
	Thiele; Stefan; Fuchs; Bernhard M; Amann; Rudolf; Iversen; Morten Hvitfeldt; Wommack; K Eric
发布日期	2015-05-12
数据集类型	dataset
英文简介	Due to sampling difficulties, little is known about microbial communities associated with sinking marine snow in the twilight zone. A drifting sediment trap was equipped with a viscous cryogel and deployed to collect intact marine snow from depths of 100 and 400 m off Cape Blanc (Mauritania). Marine snow aggregates were fixed and washed in situ to prevent changes in microbial community composition and to enable subsequent analysis using catalyzed reporter deposition fluorescence in situ hybridization (CARD-FISH). The attached microbial communities collected at 100 m were similar to the free-living community at the depth of the fluorescence maximum (20 m) but different from those at other depths (150, 400, 550, and 700 m). Therefore, the attached microbial community seemed to be "inherited" from that at the fluorescence maximum. The attached microbial community structure at 400 m differed from that of the attached community at 100 m and from that of any free-living community at the tested depths, except that collected near the sediment at 700 m. The differences between the particle-associated communities at 400 m and 100 m appeared to be due to internal changes in the attached microbial community rather than de novo colonization, detachment, or grazing during the sinking of marine snow. The new sampling method presented here will facilitate future investigations into the mechanisms that shape the bacterial community within sinking marine snow, leading to better understanding of the mechanisms which regulate biogeochemical cycling of settling organic matter.
空间范围	Latitude: 20.585500 * Longitude: -18.005500
时间范围	2011-05-01T00:57:00 - 2011-05-01T00:57:00
语种	英语
国家	国际
学科大类	气候变化
学科子类	气候变化
文献类型	数据集
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/215454
推荐引用方式 GB/T 7714	Thiele,Stefan,Fuchs,et al. Relative abundances and microbial numbers of organisms from water sample station GeoB15704-2.2015-05-12.https://doi.org/10.1594/PANGAEA.846188.