[Vision2020] Superb Radio Australia Lecture Aired Today: Professor Roberts: "The coming crisis for the oceans"

Ted Moffett starbliss at gmail.com
Wed Jun 26 17:00:56 PDT 2013


University of York bio on the lecturer:

http://www.york.ac.uk/environment/our-staff/callum-roberts/

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This lecture can be listened to off the following website:
http://www.abc.net.au/radionational/programs/scienceshow/the-coming-crisis-for-the--oceans/4735314
The coming crisis for the oceans

Saturday 22 June 2013 12:05PM

The world’s oceans are getting hotter, higher, more acidic, and more
polluted. On one hand it’s happening slowly. On the other hand it’s fast.
Incredibly fast. The oceans have warmed more than half a degree in fifty
years. Corals don’t like hot water. They expel their symbiotic algae
resulting in bleaching, and coral death. The oceans are 30% more acidic
compared with pre-industrial times. Animals with shells will struggle and
disappear with the changed water chemistry. And so will the fish that feed
upon them.

Fish are fleeing the heat. They are moving polewards. This is leading to
loss of diversity in tropical waters, and increased competition in polar
waters. The warmer water reduces productivity and rates of growth. This is
happening as we expect to take more from the sea for a human population not
expected to peak until mid-century.

In this address given at the University of Sydney in 2013, Callum Roberts
describes the pressures on the world’s oceans and their ominous future. He
says the world’s oceans have changed more in the past thirty years than
during the whole of human history.

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Vision2020 Post: Ted Moffett
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