The French yacht Tara left yesterday on the second leg of a three-year voyage across the world’s oceans to chart the effects of climate change on microorganisms that produce half our oxygen.
The 36m schooner departed from Cape Town a year after leaving Lorient in western France to head across the Atlantic and Pacific oceans for New Zealand in August next year as part of a 150,000km journey.
The plankton-studying boat will sail to Ascension Island, the expedition’s longest crossing since leaving France, before it heads for Brazil, Argentina and further south to Antarctica.
The crew are collecting samples that are frozen onboard and sent to laboratories every month to map out a baseline for future climate studies.
“We know that some of the tiny plankton are threatened ... and we know that tiny animals or these tiny plants are very very important in controlling the balance in the ocean,” Philippe Koubbi, the chief scientist on board, told reporters
A bio-bank is being created from the research, ranging from viruses and bacteria to fish larvae, and more than 100 scientists are involved in the project. Plankton ecosystems are little known, but the microorganisms absorb half of the world’s carbon production and produce as much oxygen as forests.
“This is really what this expedition is really about — is really to look at this planktonic life, which is really in the open ocean, really controlling everything,” Koubbi said.
A 13-person team left Cape Town, South Africa, where the yacht spent time in dry-dock, with early spring making weather the main challenge and not threats such as sea pirates, which were the main concern in the first leg.
The return to ice will be familiar territory for the 1989-built vessel — now on its eighth scientific voyage — which was previously named Antarctica and ended a 507-day Arctic trip in 2008.
Next year, Tara will also sail via Chile, Easter Island, the Galapagos Islands, the Clipperton Islands, the Marquesas Islands and Papeete.
The first leg crossed the Atlantic, Mediterranean, Red Sea, Arabian Sea and Indian Ocean.
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