Climate-Forced Variability of Ocean Hypoxia

  title={Climate-Forced Variability of Ocean Hypoxia},
  author={Curtis A. Deutsch and Holger Brix and Takamitsu Ito and Hartmut Frenzel and Lu Anne Thompson},
  pages={336 - 339}
The spatial extent of ocean hypoxic zones, which are uninhabitable by many marine organisms, is very sensitive to dioxygen content. Oxygen (O2) is a critical constraint on marine ecosystems. As oceanic O2 falls to hypoxic concentrations, habitability for aerobic organisms decreases rapidly. We show that the spatial extent of hypoxia is highly sensitive to small changes in the ocean’s O2 content, with maximum responses at suboxic concentrations where anaerobic metabolisms predominate. In model… 
Reversal of Increasing Tropical Ocean Hypoxia Trends With Sustained Climate Warming
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Large Projected Decline in Dissolved Oxygen in a Eutrophic Estuary Due to Climate Change
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Pressures on the marine environment and the changing climate of ocean biogeochemistry
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  • Environmental Science
    Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences
  • 2012
The challenge, within the next few decades, for the marine science community, is to elucidate the scope and extent that biological processes can adapt or acclimatize to a changing chemical and physical marine environment.
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Olympic oxygen minimum zones have expanded over the past 50 years, and this expansion is predicted to continue as the climate warms worldwide, and shoaling of the upper boundaries of the OMZs accompanies OMZ expansion.
Oxygen and indicators of stress for marine life in multi-model global warming projections
Decadal-to-century scale trends for a range of marine environmental variables in the upper mesopelagic layer (UML, 100–600 m) are investigated using results from seven Earth System Models forced by a
Patterns of deoxygenation: sensitivity to natural and anthropogenic drivers
Observational estimates and numerical models both indicate a significant overall decline in marine oxygen levels over the past few decades. Spatial patterns of oxygen change, however, differ
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What Changes in the Carbonate System, Oxygen, and Temperature Portend for the Northeastern Pacific Ocean: A Physiological Perspective
Analysis of the effects of stressors on physiological processes common to many marine taxa may contribute to the development of models and other decision-support tools to assist resource managers and policymakers in anticipating and addressing global change–driven alterations in marine populations and ecosystems.


A conceptual model for the temporal spectrum of oceanic oxygen variability
Changes in dissolved O2 observed across the world oceans in recent decades have been interpreted as a response of marine biogeochemistry to climate change. Little is known however about the spectrum
Ocean deoxygenation in a warming world.
The potential for larger O2 declines in the future suggests the need for an improved observing system for tracking ocean 02 changes, and an important consequence may be an expansion in the area and volume of so-called oxygen minimum zones.
The oceanic fixed nitrogen and nitrous oxide budgets: Moving targets as we enter the anthropocene?*
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The change in oceanic O2 inventory associated with recent global warming
  • R. KeelingH. Garcia
  • Environmental Science
    Proceedings of the National Academy of Sciences of the United States of America
  • 2002
An independent argument is presented here in support of this prediction based on observational evidence of the ocean's biogeochemical response to natural warming, indicating that most of the O2 exchange is biologically mediated through links between heating and stratification.
Climate-induced oceanic oxygen fluxes: Implications for the contemporary carbon budget
Atmospheric O2 concentrations have been used to estimate the ocean and land sinks of fossil fuel CO2. In previous work, it has been assumed that the oceans have no long‐term influence on atmospheric
Climate-related variations in denitrification in the Arabian Sea from sediment 15N/14N ratios
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Oxygen in the Southern California Bight: Multidecadal trends and implications for demersal fisheries
Reports of hypoxic conditions (oxygen <1.5 ml L−1) off the U.S. west coast over the last two decades led us to investigate hypoxia in the Southern California Bight (SCB) and its potential impacts on
Denitrification and N2 fixation in the Pacific Ocean
We establish the fixed nitrogen budget of the Pacific Ocean based on nutrient fields from the recently completed World Ocean Circulation Experiment (WOCE). The budget includes denitrification in the