Diatoms | Ice Stories: Dispatches From Polar Scientists

Tour the JOIDES Resolution

By Rob Dunbar · March 2, 2010 ·

ABOARD THE JOIDES RESOLUTION, OFF THE COAST OF WILKES LAND, ANTARCTICA– In this video, Christina and I lead you on a brief tour of the JOIDES Resolution... {Read More »}

The Scene Outside: Lots of birds

By Rob Dunbar · February 10, 2010 ·

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ABOARD THE JOIDES RESOLUTION, OFF THE COAST OF WILKES LAND, ANTARCTICA– Our ship is constantly surrounded by Albatrosses, Petrels, and Skuas. Sometimes we see more than 100 birds surrounding the ship. They swoop and dive, looking for food in the water... {Read More »}

Welcome Aboard!

By Rob Dunbar · January 18, 2010 ·

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ABOARD THE JOIDES RESOLUTION, EN ROUTE TO THE WILKES LAND MARGIN, ANTARCTICA-- Welcome to IODP Expedition 318. It's been nine days since we set sail from Wellington, New Zealand... {Read More »}

Video Tour of the JR

By Doug LaVigne · August 9, 2009 ·

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ABOARD THE JOIDES RESOLUTION, ON THE BERING SEA-- Drilling is going very smoothly on site U1343. We are almost done with hole C at this site. If things continue... {Read More »}

Experiments with Phytoplankton Growing Close to Icebergs

By Maria Vernet · April 24, 2009 ·

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ABOARD THE RVIB N. B. PALMER, ON THE SOUTHERN OCEAN– We are experimenting with iron additions to phytoplankton populations to see possible effects of icebergs as a source of iron... {Read More »}

A Trip to the Ice Edge

By Maria Vernet · April 16, 2009 ·

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ABOARD THE RVIB N. B. PALMER, ON THE SOUTHERN OCEAN– After a four day trek looking for other icebergs we might want to study, we came back to continue studying iceberg C18A... {Read More »}

Reproduction in Antarctic Diatoms

By Maria Vernet · April 13, 2009 ·

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ABOARD THE RVIB N. B. PALMER, ON THE SOUTHERN OCEAN– As most unicellular phytoplankton algae, diatoms usually reproduce by division. One cell becomes two after mitosis; the two new algae are called “daughter cells”. Once in a long while diatoms go through sexual reproduction. What brings this phenomenon? {Read More »}

Diatoms Can Be Toxic

By Maria Vernet · April 9, 2009 ·

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ABOARD THE RVIB N. B. PALMER, ON THE SOUTHERN OCEAN– Phytoplankton cells can become toxic under certain conditions. Still a mystery to scientists why they produce toxins, there has been a proliferation of large concentrations of toxic cells, or blooms, also called red tides, during the last 20 years... {Read More »}

Our First Iceberg

By Maria Vernet · April 1, 2009 ·

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ABOARD THE RVIB N. B. PALMER, ON THE SOUTHERN OCEAN-- C18A is a large iceberg, rectangular, shaped almost like a surf board, 18 km long and 6 km wide. It takes us about 4 hours at 11 knots to navigate around it... {Read More »}

All Kinds of Diatoms

By Maria Vernet · March 31, 2009 ·

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ABOARD THE RVIB N. B. PALMER, ON THE SOUTHERN OCEAN-- After 4 days in transit we arrived at Clarence Island near the South Shetlands. It is too windy to test our new instruments here. So we turn northeast and after 8 more hours we arrive at the C18A iceberg... {Read More »}

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