3-7 September 2018
Audimax | Kiel University
Europe/Berlin timezone

Ocean deoxygenation overrules ocean warming and acidification impacts in marine biota

5 Sep 2018, 15:30
Audimax-Hörsaal-A (Kiel University)


Kiel University

Oral 06 Physiological Effects of Oxygen & Interactions with Multiple Stressors 06 Physiological Effects of Oxygen & Interactions with Multiple Stressors


Dr Rui Rosa (MARE - University of Lisbon)


Man-induced global climate changes are leading to severe modifications on the ocean’s physicochemistry, with far-reaching consequences for marine life. While CO2 emissions are warming and acidifying seawater masses, oxygen content is diminishing due to decreased oxygen-solubility, increased stratification, augmented microbial respiration, and other abiotic/biotic processes. Following well-established theoretical model predictions, we performed hierarchical mixed-model meta-analyses testing the effects of climate change-related stressors (ocean acidification, warming, both aforesaid stressors combined, and hypoxia) across different biological responses, taxonomic groups, ontogenic life stages and climate regions (i.e. moderators). Overall, and within tested moderators, hypoxia affected marine life to a starkly greater extent than the other stressors. Thus, decreased mean oxygen content, and consequent expansion/forming of oceanic hypoxic areas, are likely to become a primary deterrent for life in future oceans.

Email Address rrosa@fc.ul.pt
Affiliation MARE – University of Lisbon
Position Senior Scientist
Are you a SFB 754 / Future Ocean member? No

Primary authors

Dr Rui Rosa (MARE - University of Lisbon) Dr Inês Rosa (MARE- University of Lisbon) Dr Verónica Ferreira (MARE - University of Coimbra) Dr Hans-Otto Portner (Alfred-Wegener-Institute (AWI)) Dr Carlos Duarte (King Abdullah University of Science and Technology (KAUST)) Lisa Levin Mr Eduardo Sampaio (MARE- University of Lisbon)

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