H
Hans-Otto Pörtner
Researcher at Alfred Wegener Institute for Polar and Marine Research
Publications - 348
Citations - 27627
Hans-Otto Pörtner is an academic researcher from Alfred Wegener Institute for Polar and Marine Research. The author has contributed to research in topics: Climate change & Population. The author has an hindex of 76, co-authored 332 publications receiving 24435 citations. Previous affiliations of Hans-Otto Pörtner include University of Bremen & Max Planck Society.
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Journal ArticleDOI
Climate change affects marine fishes through the oxygen limitation of thermal tolerance.
Hans-Otto Pörtner,Rainer Knust +1 more
TL;DR: It is shown in the eelpout, Zoarces viviparus, a bioindicator fish species for environmental monitoring from North and Baltic Seas, that thermally limited oxygen delivery closely matches environmental temperatures beyond which growth performance and abundance decrease, which will be the first process to cause extinction or relocation to cooler waters.
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Climate variations and the physiological basis of temperature dependent biogeography: systemic to molecular hierarchy of thermal tolerance in animals.
TL;DR: The present study suggests that the capacity of oxygen delivery is set to a level just sufficient to meet maximum oxygen demand between the average highs and lows of environmental temperatures.
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Oxygen- and capacity-limitation of thermal tolerance: a matrix for integrating climate-related stressor effects in marine ecosystems.
TL;DR: The conceptual analysis suggests that the relationships between energy turnover, the capacities of activity and other functions and the width of thermal windows may lead to an integrative understanding of specialization on climate and, as a thermal matrix, of sensitivity to climate change and the factors involved.
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Climate change and temperature-dependent biogeography: oxygen limitation of thermal tolerance in animals.
TL;DR: The capacity of oxygen delivery matches full aerobic scope only within the thermal optimum and at temperatures outside this range, only time-limited survival is supported by residual aerobic scope, then anaerobic metabolism and finally molecular protection by heat shock proteins and antioxidative defence.
Journal ArticleDOI
Contrasting futures for ocean and society from different anthropogenic CO2 emissions scenarios
Jean-Pierre Gattuso,Jean-Pierre Gattuso,Alexandre K. Magnan,Raphaël Billé,William W. L. Cheung,Ella L. Howes,Fortunat Joos,D. Allemand,Laurent Bopp,Sarah R. Cooley,C. M. Eakin,Ove Hoegh-Guldberg,Ryan P. Kelly,Hans-Otto Pörtner,Alex Rogers,John M. Baxter,D. Laffoley,D. Osborn,Aleksandar Rankovic,Julien Rochette,Ussif Rashid Sumaila,Sébastien Treyer,Carol Turley +22 more
TL;DR: The physics, chemistry, and ecology of the oceans might be affected based on two CO2 emission trajectories: one business as usual and one with aggressive reductions, consistent with the Copenhagen Accord of keeping mean global temperature increase below 2°C in the 21st century.