by
Dr Thierry Chopin
In my October 2019 column, I reported that we (19 researchers and policy
analysts) published the report “The Ocean as a Solution to Climate Change: Five
Opportunities for Action” for the High Level Panel for a Sustainable Ocean
Economy (HLPSOE). Our publication was endorsed by the panel’s 14 serving heads
of state and government members at the United Nations Secretary-General’s
Climate Action Summit in New York, on September 23rd, 2019.
We believe that, through five opportunities for action, the Ocean could be a
substantial solution to climate change. It could deliver up to 21 percent
(11.82 GtCO2e/year) of the annual greenhouse gas (GHG) emissions cuts needed by
2050 to keep global temperature rises below 1.5°C.
In my November 2019 column, I developed one of the opportunities for action
that should be of interest to the readers of International Aquafeed and the
aquaculture sector: investing in nature-based actions and seaweed farming.
In this column, I will look at the potential mitigation impact of reducing the
carbon footprint of ocean-derived food production (wild capture fisheries and
aquaculture) and the potential reductions from shifting diets to include more
low-carbon sources of ocean-based proteins, if those seafood options can be
provided on a sustainable basis.
Reducing emissions from wild capture fisheriesDifferent types of food, harvested and produced in different places by
different means, can vary by more than an order of magnitude in the total
greenhouse gas (GHGs) they emit across their full life cycle.
It is estimated that global wild capture fisheries account for roughly four percent
of global food system production emissions.
Reductions in emissions from wild-capture fisheries can be achieved in ways
ranging from technological advances in engine efficiency or hull design to
changes in skipper behaviour, such as speed reductions and willingness to fish
in poor conditions. However, while technological changes, such as gear design
and engine retrofits, have been demonstrated to influence fuel-use rates in
individual vessels, the effects of such changes at the fleet level are unclear
and can be overshadowed by variation in stock abundances or structural changes
to the fisheries.
Read more, HERE.
The Aquaculturists
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