气候变化领域集成服务门户(CCPortal): Hydrochemistry measured on water bottle samples during Sarmiento de Gamboa BEO 2011 cruise

CCPortal

DOI	https://doi.org/10.1594/PANGAEA.868928
	Hydrochemistry measured on water bottle samples during Sarmiento de Gamboa BEO 2011 cruise
	Vidal; Montserrat; Aspillaga; Eneko; Teixidor-Toneu; Irene; Delgado-Huertas; Antonio
发布日期	2016-11-30
数据集类型	dataset
英文简介	The ability of the subtropical North Atlantic to sustain export production despite the lack of available nutrients is fascinating. Subtropical gyres are expected to expand under a global warming scenario, so it is important to understand the mechanisms supplying the required nutrients. Current issues for the region concern the nutrient and metabolic balance, the origin of excess nitrogen and phosphorus shortage, and the maintenance of nitrogen fixation. We report data on the allocation of nitrogen and phosphorus in dissolved and suspended pools, the isotopic δ15N of suspended nitrogen, and the lability of dissolved organic phosphorus (DOP) along a section crossing the eastern seasonally stratified North Atlantic (SSNA) and the western subtropical North Atlantic (NASW). We find extreme P-deficiency in the NASW, with the highest dissolved inorganic N:P ratios located within the upper-thermocline isopycnals (σϴ = 26.3-26.8). Our data indicate an important role of the mid-latitude northeast SSNA bringing dissolved organic matter (DOM) to the thermocline of the North Atlantic. The mineralisation of N-rich DOM contributes to the N excess (P deficit) of the upper-thermocline of NASW. We find lower concentrations of more reactive DOP in the western than in the eastern part of the transect, indicating an active role of DOP in the nutrition of microbial communities. Our results support recent hypotheses concerning the environmental controls of marine nitrogen fixation identifying the key role of DOP utilisation.
空间范围	Median Latitude: 33.338812 * Median Longitude: -41.439801 * South-bound Latitude: 20.883500 * West-bound Longitude: -64.681500 * North-bound Latitude: 41.571170 * East-bound Longitude: -14.733670
时间范围	2011-03-25T16:08:00 - 2011-04-08T10:25:00
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/216706
推荐引用方式 GB/T 7714	Vidal,Montserrat,Aspillaga,et al. Hydrochemistry measured on water bottle samples during Sarmiento de Gamboa BEO 2011 cruise.2016-11-30.https://doi.org/10.1594/PANGAEA.868928.