DOI: 10.1038/ngeo2790
论文题名: Substantial role of macroalgae in marine carbon sequestration
作者: Krause-Jensen D. ; Duarte C.M.
刊名: Nature Geoscience
ISSN: 17520894
出版年: 2016
卷: 9, 期: 10 起始页码: 737
结束页码: 742
语种: 英语
Scopus关键词: carbon sequestration
; coastal zone
; deep sea
; macroalga
; mangrove
; marine environment
; marine sediment
; seagrass meadow
; source-sink dynamics
; Magnoliophyta
; Rhizophoraceae
英文摘要: Vegetated coastal habitats have been identified as important carbon sinks. In contrast to angiosperm-based habitats such as seagrass meadows, salt marshes and mangroves, marine macroalgae have largely been excluded from discussions of marine carbon sinks. Macroalgae are the dominant primary producers in the coastal zone, but they typically do not grow in habitats that are considered to accumulate large stocks of organic carbon. However, the presence of macroalgal carbon in the deep sea and sediments, where it is effectively sequestered from the atmosphere, has been reported. A synthesis of these data suggests that macroalgae could represent an important source of the carbon sequestered in marine sediments and the deep ocean. We propose two main modes for the transport of macroalgae to the deep ocean and sediments: macroalgal material drifting through submarine canyons, and the sinking of negatively buoyant macroalgal detritus. A rough estimate suggests that macroalgae could sequester about 173 TgC yr â '1 (with a range of 61-268 TgC yr â '1) globally. About 90% of this sequestration occurs through export to the deep sea, and the rest through burial in coastal sediments. This estimate exceeds that for carbon sequestered in angiosperm-based coastal habitats. © 2016 Macmillan Publishers Limited, part of Springer Nature. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/105914
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: Department of Bioscience, Aarhus University, VejlsØvej 25, Silkeborg, Denmark; Arctic Research Centre, Department of Bioscience, Aarhus University, Ny Munkegade 114, Arhus C, Denmark; King Abdullah University of Science and Technology (KAUST), Red Sea Research Center, Thuwal, Saudi Arabia
Recommended Citation:
Krause-Jensen D.,Duarte C.M.. Substantial role of macroalgae in marine carbon sequestration[J]. Nature Geoscience,2016-01-01,9(10)