Heterogeneity of nitrogen fixation in the mesopelagic zone of the South China Sea [PDF]
Frontiers in Marine ScienceBiological dinitrogen (N2) fixation, the energetically expensive conversion of N2 gas to ammonia, plays an essential role in balancing the nitrogen budget in the ocean.
Siqi Wu +17 more
doaj +4 more sources
Exploring the Use of Environmental DNA (eDNA) to Detect Animal Taxa in the Mesopelagic Zone
Frontiers in Ecology and Evolution, 2021 Animal biodiversity in the ocean’s vast mesopelagic zone is relatively poorly studied due to technological and logistical challenges. Environmental DNA (eDNA) analyses show great promise for efficiently characterizing biodiversity and could provide new ...
Annette F. Govindarajan +6 more
doaj +4 more sources
The Mesopelagic Scattering Layer: A Hotspot for Heterotrophic Prokaryotes in the Red Sea Twilight Zone [PDF]
Frontiers in Marine Science, 2018 The vast majority of marine dissolved organic carbon (DOC), the largest reservoir of reduced carbon on Earth, is believed to accumulate in the abyssal layers of the ocean over timescales of decades to millennia.
Maria L. Calleja +8 more
doaj +2 more sources
Physical controls on heterogeneous mesopelagic biogeochemistry [PDF]
Communications Earth & EnvironmentThe surface and interior ocean are connected through physical processes that act in three dimensions and on subseasonal timescales. Numerical models and observations both highlight the importance of these eddying dynamics on shaping the biogeochemical ...
Mara A. Freilich +2 more
doaj +2 more sources
Barite Precipitation on Suspended Organic Matter in the Mesopelagic Zone [PDF]
Frontiers in Earth Science, 2020 Mechanisms underlying barite precipitation in seawater and the precise depths of barite precipitation in the water column have been debated for decades.
F. Martinez-Ruiz +7 more
doaj +2 more sources
Global estimate of mesopelagic mesozooplankton biomass [PDF]
Scientific ReportsThe global standing stock of mesozooplankton in the mesopelagic zone was assessed using estimates of particulate organic carbon (POC) and net primary productivity (NPP).
Yulia Egorova +3 more
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Reconstructing the ocean's mesopelagic zone carbon budget: sensitivity and estimation of parameters associated with prokaryotic remineralization [PDF]
Biogeosciences, 2023 Through the constant rain of sinking marine particles in the ocean, carbon (C) trapped within is exported into the water column and sequestered when reaching depths below the mesopelagic zone.
C. Baumas +8 more
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Evidence of temperature control on mesopelagic fish and zooplankton communities at high latitudes
Frontiers in Marine Science, 2022 Across temperate and equatorial oceans, a diverse community of fish and zooplankton occupies the mesopelagic zone, where they are detectable as sound-scattering layers. At high latitudes, extreme day-night light cycles may limit the range of some species,
Julek Chawarski +4 more
doaj +3 more sources
Projected 21st century compression of mesopelagic habitat in the California current [PDF]
Scientific ReportsAlthough the mesopelagic zone occupies a substantial volume of the world’s oceans, our results suggest that the livable portion may compress vertically by ~ 40 m or ~ 39% by the end of the century.
Ilysa S. Iglesias, Jerome Fiechter
doaj +2 more sources
Carbon export and transfer to depth across the Southern Ocean Great Calcite Belt [PDF]
Biogeosciences, 2015 Sequestration of carbon by the marine biological pump depends on the processes that alter, remineralize, and preserve particulate organic carbon (POC) during transit to the deep ocean.
S. Z. Rosengard +6 more
doaj +7 more sources