Intertwined ocean and climate: implications for international climate negotiations

Key Messages: Climate and ocean are inseparable: the ocean moderates anthropogenic climate change by absorbing significant proportions of the heat and CO2 that accumulate in the atmosphere, as well as by receiving all water from melting ice. This climate-regulating function happens at the cost of profound alterations of the ocean’s physics and chemistry, leading to ocean warming and acidification, as well as to sea level rise. These changes significantly affect the ocean’s ecology (organisms and ecosystems) and eventually marine and coastal human activities (fisheries, aquaculture, tourism, health…). As atmospheric CO2 increases, possible human responses become fewer and less effective. This […]

Contrasting futures for ocean and society from different anthropogenic CO2 emissions scenarios

Gattuso J.-P., Magnan A., Billé R., Cheung W. W. L., Howes E. L., Joos F., Allemand D., Bopp L., Cooley S., Eakin C. M., Hoegh-Guldberg O., Kelly R. P., Pörtner H.-O., Rogers A. D., Baxter J. M., Laffoley D., Osborn D., Rankovic A., Rochette J., Sumaila U. R., Treyer S. & Turley C., 2015. Contrasting futures for ocean and society from different anthropogenic CO2 emissions scenarios. Science 349: aac4722. BACKGROUND Although the ocean moderates anthropogenic climate change, this has great impacts on its fundamental physics and chemistry, with important consequences for ecosystems and people. Yet, despite the ocean’s critical role […]

Ocean acidification impacts on fisheries and aquaculture

Executive Summary impacts of Ocean Acidification (OA) on fisheries and aquaculture are highly diverse and complex many impacts are difficult to quantify causing a major knowledge and awareness gap investment in knowledge needs to be action orientated adaptation priorities, cost of actions, costs of inaction need to be grounded in consensus science processes to manage the Ocean Acidification agenda need to be mapped and targeted to specific actio