DOI: 10.1038/ngeo2818
论文题名: Substantial energy input to the mesopelagic ecosystem from the seasonal mixed-layer pump
作者: Dall'Olmo G. ; Dingle J. ; Polimene L. ; Brewin R.J.W. ; Claustre H.
刊名: Nature Geoscience
ISSN: 17520894
出版年: 2016
卷: 9, 期: 11 起始页码: 820
结束页码: 823
语种: 英语
Scopus关键词: Argo
; biological pump
; carbon flux
; ecosystem dynamics
; fish
; global change
; mesopelagic zone
; mixed layer
; particulate organic carbon
; satellite altimetry
; spatial distribution
英文摘要: The ocean region known as the mesopelagic zone, which is at depths of about 100-1,000 m, harbours one of the largest ecosystems and fish stocks on the planet. Life in this region is believed to rely on particulate organic carbon supplied by the biological carbon pump. Yet this supply appears insufficient to meet mesopelagic metabolic demands. An additional organic carbon source to the mesopelagic zone could be provided by the seasonal entrainment of surface waters in deeper layers, a process known as the mixed-layer pump. Little is known about the magnitude and spatial distribution of this process globally or its potential to transport carbon to the mesopelagic zone. Here we combine mixed-layer depth data from Argo floats with satellite estimates of particulate organic carbon concentrations to show that the mixed-layer pump supplies an important seasonal flux of organic carbon to the mesopelagic zone. We estimate that this process is responsible for a global flux of 0.1-0.5 Pg C yr-1. In high-latitude regions where the mixed layer is usually deep, this flux amounts on average to 23% of the carbon supplied by fast sinking particles, but it can be greater than 100%. We conclude that the seasonal mixed-layer pump is an important source of organic carbon for the mesopelagic zone. © 2016 Macmillan Publishers Limited, part of Springer Nature. All rights reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/105897
Appears in Collections: 气候减缓与适应 科学计划与规划
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作者单位: Plymouth Marine Laboratory, Prospect Place, Hoe, Plymouth, United Kingdom; National Centre for Earth Observations, Plymouth Marine Laboratory, Prospect Place, Hoe, Plymouth, United Kingdom; Hjort Centre for Marine Ecosystem Dynamics, PO Box 1870, Nordnes, Bergen, Norway; Sorbonne Universités, UPMC Université Paris 06, UMR 7093, Laboratoire D'Océanographie de Villefranche, Villefranche-sur-Mer, France
Recommended Citation:
Dall'Olmo G.,Dingle J.,Polimene L.,et al. Substantial energy input to the mesopelagic ecosystem from the seasonal mixed-layer pump[J]. Nature Geoscience,2016-01-01,9(11)