French science vessel sails again on climate voyage

The French yacht Tara left yesterday on the second leg of a three-year expedition across the world’s oceans to chart the effects of climate change on micro-organisms which produce half our oxygen. The 36-metre schooner sailed from Cape Town a year after leaving Lorient in western France to head across the Atlantic and Pacific oceans for New Zealand next August as part of a 150,000-kilometre journey. “We are going to Ascension Island – we’ll be there in one month and then in Rio in the middle of October,” said captain Olivier Marien shortly ahead of the yacht’s departure.

“We have a busy schedule on the way so we will make several stops. Tomorrow will be the first sampling off the South African waters.”

The plankton-studying boat will then sail to Argentina and further south to Antarctica.

The crew are collecting samples which are frozen onboard and sent to laboratories every month to map out a baseline for future climate studies.

“We know now that the planet is changing, and the ocean is changing, and we expect much from the ocean to counterbalance what the humans are doing on the planet,” Philippe Koubbi, the chief scientist on board said.

“We know that some of the tiny plankton are threatened... and we know that tiny animals or these tiny plants are very important in controlling the balance in the ocean.”

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.