A Look Into the Ocean’s Future - Discussion of a NY Times article -

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Presentation transcript:

A Look Into the Ocean’s Future - Discussion of a NY Times article - Session 1 Joost den Haan PhD student University of Amsterdam

“The oceans are approaching irreversible potentially catastrophic change” But why?

The ‘Deadly trio’ Global warming Ocean acidification Anoxia (ocean dead zones) Currently conditions are created associated with every previous major extinction of species in the ocean’s history

Anoxia Red tide - California

What is causing this deadly trio? Many different natural and human impacts, directly or indirectly…

Human impacts

Natural impacts

Example of recent human impact All species of scombrids and billfishes are on the IUCN Red List of Threatened Species (July 2011)

Natural & human? In 1998, 16% of the worlds tropical coral reefs died due to a single mass bleaching event

Multiple stressors acting together… This is when it get’s really serious Oil spills Sun Coastal develop. Hurricane Nutrients Thrawling CO2 Blasting Recreation Garbage Temperature Overfishing Chemical waste Invasive species

Multiple stressors acting together… This is when it get’s really serious Oil spills Sun Can seriously decrease the ocean’s resilience, making it more vulnerable Coastal develop. Hurricane Nutrients Thrawling CO2 Blasting Recreation Garbage Temperature Overfishing Chemical waste Invasive species

Example of resilience: a coral reef start Reef health “Abuse”/ pollution

Conclusion from article Immediate reduction of CO2 emissions Marine Conservation Areas Protection of ocean life internationally Rather generaly statements…

What is our role as Marine Scientists? Curaçao, Southern Caribbean

Environmental decision-making Managers Scientists Politicians Social interests Ethics Economists

Environmental decision-making

What is our role as Scientists? Be objective Provide important information for managers and policymakers Being able to communicate when making decisions about the management of natural resources

What is our role as Scientists? We cannot forget why we do science and how important it is for our oceans!