Results 61 to 70 of about 9,177 (246)
Microbial respiration in the mesopelagic zone at Station ALOHA [PDF]
Limnology and Oceanography, 2016 AbstractMeasurements of the temporal and depth variability of microbial community respiration (MCR) in the mesopelagic zone (200–1,000 m) at Station ALOHA were made approximately monthly from November 2011 to October 2012 using the in vivo INT method. MCR in the summed and in each of the 0.2–0.8 µm and >0.8 µm size‐fractions in the upper mesopelagic
openaire +1 more source
Contrasting Drivers of Bacterial Metabolism in the Euphotic and Mesopelagic Zones of Tropical Oligotrophic Oceans [PDF]
Global Biogeochemical CyclesAbstractMicrobial metabolism plays a critical role in global carbon cycling; however, our understanding of bacterial metabolic processes across the full depth of tropical oligotrophic oceans remains incomplete. The South China Sea (SCS) and Western Pacific (WP), as contrasting oligotrophic environments, provide an ideal setting to investigate this ...
Wenxin Fan +10 more
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Novel insights into the Thaumarchaeota in the deepest oceans: their metabolism and potential adaptation mechanisms [PDF]
, 2020 Background: Marine Group I (MGI) Thaumarchaeota, which play key roles in the global biogeochemical cycling of nitrogen and carbon (ammonia oxidizers), thrive in the aphotic deep sea with massive populations.
Lehtovirta-Morley, Laura +8 more
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Frontiers in Marine Science, 2022 Life strategies, ecophysiological performances and diel vertical migration (DVM) of zooplankton key species affect the efficiency and strength of the biological carbon pump (BCP).
Lívia Dias Fernandes de Oliveira +5 more
doaj +1 more source
Evidence for dependency of bacterial growth on enzymatic hydrolysis of particulate organic matter in the mesopelagic ocean [PDF]
, 1993 Organic material entering the oceanic mesopelagic zone may either reenter the euphotic zone or settle into deeper waters. Therefore it is important to know about mechanisms and efficiency of substrate conversion in this water layer.
Ducklow, H. +2 more
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Mountains in the Sea: Fishy Deep-sea Designs [PDF]
In this activity, students will focus on adaptations of fishes living in the mesopelagic and bathypelagic zones of the deep ocean. The students will learn about the physical location of deep water habitats along the Hudson Shelf Valley and in Hudson ...
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Endangered Species Research, 2020 The pelagic thresher shark Alopias pelagicus is an understudied elasmobranch harvested in commercial fisheries of the tropical Indo-Pacific. The species is endangered, overexploited throughout much of its range, and has a decreasing population trend ...
Arostegui, MC +6 more
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Frontiers in Marine Science, 2022 Microplastics (MPs) are ubiquitous contaminants in the ocean. Zooplankton is thus widely exposed to MP ingestion. Here, we use a global coupled physical–biogeochemical model enriched with a 3D representation of MPs to assess the global zooplankton ...
Camille Richon +3 more
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Integrating functional diversity, food web processes, and biogeochemical carbon fluxes into a conceptual approach for modeling the upper ocean in a high-CO2 world [PDF]
, 2005 Marine food webs influence climate by channeling carbon below the permanent pycnocline, where it can be sequestered. Because most of the organic matter exported from the euphotic zone is remineralized within the "upper ocean" (i.e., the water column ...
Legendre, Louis, Rivkin, Richard B.
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The “Dark Side” of Picocyanobacteria: Life as We Do Not Know It (Yet)
Microorganisms, 2022 Picocyanobacteria of the genus Synechococcus (together with Cyanobium and Prochlorococcus) have captured the attention of microbial ecologists since their description in the 1970s.
Cristiana Callieri +2 more
doaj +1 more source