Highly variable iron content modulates iceberg-ocean fertilisation and potential carbon export
نویسندگان
چکیده
منابع مشابه
Iron defecation by sperm whales stimulates carbon export in the Southern Ocean.
The iron-limited Southern Ocean plays an important role in regulating atmospheric CO(2) levels. Marine mammal respiration has been proposed to decrease the efficiency of the Southern Ocean biological pump by returning photosynthetically fixed carbon to the atmosphere. Here, we show that by consuming prey at depth and defecating iron-rich liquid faeces into the photic zone, sperm whales (Physete...
متن کاملCarbon export in the naturally iron-fertilized Kerguelen area of the Southern Ocean
Introduction Conclusions References
متن کاملDissolved organic carbon pools and export from the coastal ocean
The distribution of dissolved organic carbon (DOC) concentration across coastal waters was characterized based on the compilation of 3510 individual estimates of DOC in coastal waters worldwide. We estimated the DOC concentration in the coastal waters that directly exchange with open ocean waters in two different ways, as the DOC concentration at the edge of the shelf break and as the DOC conce...
متن کاملSmall phytoplankton and carbon export from the surface ocean.
Autotrophic picoplankton dominate primary production over large oceanic regions but are believed to contribute relatively little to carbon export from surface layers. Using analyses of data from the equatorial Pacific Ocean and Arabian Sea, we show that the relative direct and indirect contribution of picoplankton to export is proportional to their total net primary production, despite their sm...
متن کاملIroning out carbon export to the deep ocean.
In PNAS, Lopes et al. (1) present a novel approach to quantifying the efficiency of the biological carbon pump as Earth’s climate warmed from the ice bound glacial episode (26,000–18,000 y before present) to the equable climate of the present interglacial (10,000 y BP until present). The biological carbon pump begins with atmospheric CO2 transformation into chemical energy by marine photosynthe...
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ژورنال
عنوان ژورنال: Nature Communications
سال: 2019
ISSN: 2041-1723
DOI: 10.1038/s41467-019-13231-0