The 'oxygen'in oxygen minimum zones

DE Canfield, B Kraft - Environmental microbiology, 2022 - Wiley Online Library
Aerobic processes require oxygen, and anaerobic processes are typically hindered by it. In
many places in the global ocean, oxygen is completely removed at mid‐water depths …

Organic matter supply and utilization in oxygen minimum zones

A Engel, R Kiko, M Dengler - Annual Review of Marine Science, 2022 - annualreviews.org
Organic matter (OM) plays a significant role in the formation of oxygen minimum zones
(OMZs) and associated biogeochemical cycling. OM supply processes to the OMZ include …

Dissolved oxygen disturbs nitrate transformation by modifying microbial community, co-occurrence networks, and functional genes during aerobic-anoxic transition

X Liu, S Hu, R Sun, Y Wu, Z Qiao, S Wang… - Science of the Total …, 2021 - Elsevier
No consensus has been achieved among researchers on the effect of dissolved oxygen
(DO) on nitrate (NO 3−-N) transformation and the microbial community, especially during …

Nutrients in overlying water affect the environmental behavior of heavy metals in coastal sediments

X Liu, Q Liu, Y Sheng - Environmental Research, 2023 - Elsevier
Excessive nutrients in aquatic ecosystems are the main driving factors for eutrophication and
water quality deterioration. However, the influence of nutrients in overlying water on …

Interacting bioenergetic and stoichiometric controls on microbial growth

A Chakrawal, S Calabrese, AM Herrmann… - Frontiers in …, 2022 - frontiersin.org
Microorganisms function as open systems that exchange matter and energy with their
surrounding environment. Even though mass (carbon and nutrients) and energy exchanges …

Changing microbiome community structure and functional potential during permafrost thawing on the Tibetan Plateau

X Tang, M Zhang, Z Fang, Q Yang… - FEMS Microbiology …, 2023 - academic.oup.com
Large amounts of carbon sequestered in permafrost on the Tibetan Plateau (TP) are
becoming vulnerable to microbial decomposition in a warming world. However, knowledge …

Substantial oxygen consumption by aerobic nitrite oxidation in oceanic oxygen minimum zones

JM Beman, SM Vargas, JM Wilson… - Nature …, 2021 - nature.com
Oceanic oxygen minimum zones (OMZs) are globally significant sites of biogeochemical
cycling where microorganisms deplete dissolved oxygen (DO) to concentrations< 20 µM …

How low can they go? Aerobic respiration by microorganisms under apparent anoxia

JS Berg, S Ahmerkamp, P Pjevac… - FEMS Microbiology …, 2022 - academic.oup.com
Oxygen (O2) is the ultimate oxidant on Earth and its respiration confers such an energetic
advantage that microorganisms have evolved the capacity to scavenge O2 down to …

Redox-informed models of global biogeochemical cycles

EJ Zakem, MF Polz, MJ Follows - Nature communications, 2020 - nature.com
Microbial activity mediates the fluxes of greenhouse gases. However, in the global models of
the marine and terrestrial biospheres used for climate change projections, typically only …

Biogeochemical feedbacks may amplify ongoing and future ocean deoxygenation: a case study from the Peruvian oxygen minimum zone

K Wallmann, YS José, MJ Hopwood, CJ Somes… - Biogeochemistry, 2022 - Springer
A new box model is employed to simulate the oxygen-dependent cycling of nutrients in the
Peruvian oxygen minimum zone (OMZ). Model results and data for the present state of the …