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Physical controls on heterogeneous mesopelagic biogeochemistry [PDF]

Communications Earth & Environment
The 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, Lilian A. Dove, Katarina Merk   +2 more
doaj   +2 more sources

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, Thor A. Klevjer, David Coté, Maxime Geoffroy, Maxime Geoffroy   +4 more
doaj   +3 more sources

Global estimate of mesopelagic mesozooplankton biomass [PDF]

Scientific Reports
The 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, Gabriel Reygondeau, William W. L. Cheung, Evgeny A. Pakhomov   +3 more
doaj   +2 more sources

Projected 21st century compression of mesopelagic habitat in the California current [PDF]

Scientific Reports
Although 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

Heterogeneity of nitrogen fixation in the mesopelagic zone of the South China Sea

Frontiers in Marine Science
Biological 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, Siqi Wu, Xianhui Sean Wan, Xianhui Sean Wan, Moge Du, Moge Du, Xirong Chen, Corday R. Selden, Mar Benavides, Mar Benavides, Mar Benavides, Sophie Bonnet, Carolin R. Löscher, Carolin R. Löscher, M. Robert Hamersley, Margaret R. Mulholland, Xiuli Yan, Shuh-Ji Kao   +17 more
doaj   +3 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, Rene D. Francolini, J. Michael Jech, Andone C. Lavery, Joel K. Llopiz, Peter H. Wiebe, Weifeng (Gordon) Zhang   +6 more
doaj   +3 more sources

Bioprospecting cultivable bacteria associated with deep sea (mesopelagic) fish of the North Atlantic Ocean [PDF]

Natural Products and Bioprospecting
The microbiota associated with fish is increasingly recognized as a valuable source of bioactive metabolites for pharmaceutical application. The mesopelagic zone, a deep and unique ecosystem with a diverse biological community, is among the least studied
Ernest Oppong-Danquah, Jana Heumann, Hannah Moosbauer, Martina Blümel, Arlette Wenzel-Storjohann, Deniz Tasdemir   +5 more
doaj   +2 more sources

Giant viruses specific to deep oceans show persistent presence and activity [PDF]

mSystems
Giant viruses (GVs) of the phyla Nucleocytoviricota and Mirusviricota are large double-stranded DNA viruses that infect diverse eukaryotic hosts and impact biogeochemical cycles.
Wenwen Liu, Komei Nagasaka, Junyi Wu, Hiroki Ban, Ethan Mimick, Lingjie Meng, Russell Y. Neches, Mohammad Moniruzzaman, Takashi Yoshida, Yosuke Nishimura, Hisashi Endo, Yusuke Okazaki, Hiroyuki Ogata   +12 more
doaj   +2 more sources

Methane filtration and metabolic cooperation of microbial communities in cold seep water columns from South China Sea [PDF]

Communications Biology
Microbes in cold seep water columns are essential for methane sequestration and biogeochemical cycling, yet their structures and ecological functions, particularly at the bottom water interface (BWI), are poorly understood. Here, we performed metagenomic
Yanjun Liu, Huan Zhang, Lei Cao, Lulu Fu, Chao Lian, Yang Guo, Zhaoshan Zhong, Inge Seim, Minxiao Wang, Chaolun Li   +9 more
doaj   +2 more sources

Divergent patterns of zooplankton connectivity in the epipelagic and mesopelagic zones of the eastern North Pacific

Ecology and Evolution, 2023
Due to historical under‐sampling of the deep ocean, the distributional ranges of mesopelagic zooplankton are not well documented, leading to uncertainty about the mechanisms that shape midwater zooplankton community composition.
Stephanie A. Matthews, Leocadio Blanco‐Bercial   +1 more
doaj   +1 more source