气候变化领域集成服务门户(CCPortal): Nutrient concentration of SPM samples from the eastern tropical North Pacific

CCPortal

DOI	https://doi.org/10.1594/PANGAEA.881432
	Nutrient concentration of SPM samples from the eastern tropical North Pacific
	Sollai; Martina; Hopmans; Ellen C; Schouten; Stefan; Keil; Rick G; Sinninghe Damsté; Jaap S
发布日期	2015-10-04
数据集类型	dataset
英文简介	In the last decade our understanding of the marine nitrogen cycle has improved considerably thanks to the discovery of two novel groups of microorganisms: ammonia- oxidizing archaea (AOA) and anaerobic ammonia-oxidizing (anammox) bacteria. Both groups are important in oxygendeficient zones (ODZs), where they substantially affect the marine N budget. These two groups of microbes are also well known for producing specific membrane lipids, which can be used as biomarkers to trace their presence in the environment. We investigated the occurrence and distribution of AOA and anammox bacteria in the water column of the eastern tropical North Pacific (ETNP) ODZ, one of the most prominent ODZs worldwide. Suspended particulate matter (SPM) was collected at different depths of thewater column in high resolution, at both a coastal and an open-ocean setting. The SPM was analyzed for AOA- and anammox bacteria-specific intact polar lipids (IPLs), i.e., hexose-phosphohexose (HPH)- crenarchaeol and phosphatidylcholine (PC)-monoether ladderane. Comparison with oxygen profiles reveals that both the microbial groups are able to thrive at low (<1µM) concentrations of oxygen. Our results indicate a clear niche segregation of AOA and anammox bacteria in the coastal waters of the ETNP but a partial overlap of the two niches of these microbial species in the open-water setting. The latter distribution suggests the potential for an interaction between the two microbial groups at the open-ocean site, although the nature of this hypothetical interaction (i.e., either competition or cooperation) remains unclear
空间范围	Median Latitude: 18.379583 * Median Longitude: -106.528486 * South-bound Latitude: 16.516330 * West-bound Longitude: -107.149670 * North-bound Latitude: 20.241500 * East-bound Longitude: -105.986330
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/216416
推荐引用方式 GB/T 7714	Sollai,Martina,Hopmans,et al. Nutrient concentration of SPM samples from the eastern tropical North Pacific.2015-10-04.https://doi.org/10.1594/PANGAEA.881432.