DOI: 10.1029/2019GB006258
论文题名: Phaeodaria: An Important Carrier of Particulate Organic Carbon in the Mesopelagic Twilight Zone of the North Pacific Ocean
作者: Ikenoue T. ; Kimoto K. ; Okazaki Y. ; Sato M. ; Honda M.C. ; Takahashi K. ; Harada N. ; Fujiki T.
刊名: Global Biogeochemical Cycles
ISSN: 0886-6236
EISSN: 1944-9224
出版年: 2019
卷: 33, 期: 8 语种: 英语
英文关键词: biological pump
; carbon cycle
; euphotic zone
; flux measurement
; marine environment
; mesopelagic zone
; particulate organic carbon
; sediment trap
; twilight
; zooplankton
; Pacific Ocean
; Pacific Ocean (North)
; Eukaryota
; Phaeodarea
学科: biological carbon pump
; carbon cycle
; mesopelagic twilight zone
; particulate organic carbon
; phaeodaria
; sediment trap
中文摘要: Phaeodaria, which comprise one group of large, single-celled eukaryotic zooplankton, have been largely ignored by past marine biological studies because Phaeodaria and their delicate skeletons are liable to collapse. As a result, collection and quantification of specimens are difficult, and seasonal changes of phaeodarian abundance have not been thoroughly studied. The transport of biogenic elements by sinking phaeodarians has been estimated for only a few representative species. Sinking particles >1 mm in size and swimmers have traditionally been excluded when estimating sinking particle fluxes. The focus of this study is the large number of phaeodarians among the >1-mm sinking particles collected in the western North Pacific from June 2014 to July 2015. Careful sorting by microscopic examination and chemical analyses revealed that phaeodarians accounted for up to about 10% of the organic carbon in all sinking particles and accounted for a mean of 33% of the organic carbon in the >1-mm sinking particles. The high-standing stocks of phaeodarians at depths of 150–1,000 m in the mesopelagic twilight zone suggested that particles sinking from the euphotic zone as aggregates and fecal pellets can be efficiently exported to the deep sea by the ballasting effect of large phaeodarian particles rich in organic carbon. © 2019. The Authors. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/160108
Appears in Collections: 气候变化与战略
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作者单位: Central Laboratory, Marine Ecology Research Institute, Chiba, Japan; Research and Development Center for Global Change, JAMSTEC, Yokosuka, Japan; Department of Earth and Planetary Sciences, Graduate School of Science, Kyushu University, Fukuoka, Japan
Recommended Citation:
Ikenoue T.,Kimoto K.,Okazaki Y.,et al. Phaeodaria: An Important Carrier of Particulate Organic Carbon in the Mesopelagic Twilight Zone of the North Pacific Ocean[J]. Global Biogeochemical Cycles,2019-01-01,33(8)