Australia pushes for ocean 'fertilisation' ban

May 16, 2013
Image taken on January 27, 2011 shows the sun rising in Indonesia's Wakatobi archipelago. Australia said it was pushing for a ban Thursday of any commercial use of a pioneering technique to reduce the impacts of climate change by "fertilising" the world's oceans with iron, warning of significant risks.

Australia said it was pushing for a ban Thursday of any commercial use of a pioneering technique to reduce the impacts of climate change by "fertilising" the world's oceans with iron, warning of significant risks.

Environment Minister Tony Burke said Australia had worked with Nigeria and South Korea on an amendment to the London Protocol governing waste dumping at sea which would prohibit commercial fertilisation activities.

"The amendment seeks to put mandatory regulation in place around the practice of ocean fertilisation," Burke said.

"It prohibits commercial ocean fertilisation activities, while allowing for legitimate scientific research to identify potential benefits and ways to safely manage the process."

Fertilisation works by dispersing small amounts of trace iron into the ocean to stimulate the growth of phytoplankton, microscopic plant-like organisms fundamental to the .

Phytoplankton absorb carbon dioxide from the atmosphere via photosynthesis and essentially sequester the gas by taking the CO2 to the when they die and sink.

Burke said the unwanted byproducts of fertilisation could be "severe" and include ocean acidification, , depletion of oxygen in or other and impacts to human health.

Australian Environment Minister Tony Burke speaks to the media in Sydney on November 16, 2012. He said Australia had worked with Nigeria and South Korea on an amendment to the London Protocol governing waste dumping at sea which would prohibit commercial fertilisation activities.

Parties to the London Protocol issued a statement of concern late last year regarding a deliberate fertilisation off west Canada by a salmon restoration corporation hoping to boost stocks of phytoplankton—a key fish food.

Australian, French and other researchers are examining fertilisation as a possible mechanism for reducing , focusing on the nutrient-rich Southern Ocean. It is yet to be proven on a significant scale.

Burke said Australia was "leading the world" in research of the method but it was important at this early stage to keep fertilisation from becoming widespread, particularly when its potential side-effects were unknown.

"The London Protocol and convention has been concerned about this issue for some time, and in 2008 adopted a voluntary resolution prohibiting ocean fertilisation activities other than legitimate scientific research" he said.

"Adoption of Australia's proposed amendment would mean that the 42 parties to the London Protocol would take a precautionary approach while more research is undertaken."

Australia's proposed ban will come before a meeting of the parties in October in London.

Explore further: Coastal defences could contribute to flooding with sea-level rise

add to favorites email to friend print save as pdf

Related Stories

Researchers analyse 'rock dissolving' method of geoengineering

Jan 21, 2013

(Phys.org)—The benefits and side effects of dissolving particles in our ocean's surfaces to increase the marine uptake of carbon dioxide (CO2), and therefore reduce the excess amount of it in the atmosphere, have been analysed ...

Recommended for you

Tracking giant kelp from space

9 hours ago

Citizen scientists worldwide are invited to take part in marine ecology research, and they won't have to get their feet wet to do it. The Floating Forests project, an initiative spearheaded by scientists ...

Heavy metals and hydroelectricity

11 hours ago

Hydraulic engineering is increasingly relied on for hydroelectricity generation. However, redirecting stream flow can yield unintended consequences. In the August 2014 issue of GSA Today, Donald Rodbell of ...

What's wiping out the Caribbean corals?

12 hours ago

Here's what we know about white-band disease: It has already killed up to 95 percent of the Caribbean's reef-building elkhorn and staghorn corals, and it's caused by an infectious bacteria that seems to be ...

User comments : 1

Adjust slider to filter visible comments by rank

Display comments: newest first

gregor1
1 / 5 (3) May 16, 2013
We are fertilising the ocean already with extra Co2