Rio +20: Reflecting on progress for fisheries and aquaculture

Stephen Hall -

Large Tilapia cages near Alexandria, Egypt. Photo by Graeme Macfadyen (Poseidon), 2011

On the 20th Anniversary of the first Rio Earth Summit it is time to reflect on our progress in putting fisheries and aquaculture on sustainable footings and the lessons we have learnt so far

In 1987 the Brundtland Commission articulated perhaps the central global challenge of our age – how do we achieve development outcomes that meet the needs of the present without compromising the ability of future generations to meet their own needs?

Acidifying oceans and the future of molluscs: implications for food security?

Stephen Hall -

Documenting ocean acidification and coral decay in the Pacific. Photo by Jamie Oliver.

Some of the threats posed by climate change can appear rather esoteric or abstract. One of these is ocean acidification – it is not immediately obvious why we should care. A recent paper by Sara Cooley and colleagues give a good example of why the threat of changing ocean chemistry matters.

More fish – surely we just need to farm the sea?

Stephen Hall -

Molluscs are the principal farmed marine product: giant clam exclosure, Solomon Islands. Photo by Mike McCoy

Some of the threats posed by climate change can appear rather esoteric or abstract. One of these is ocean acidification – it is not immediately obvious why we should care. A recent paper by Sara Cooley and colleagues give a good example of why the threat of changing ocean chemistry matters.