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Pages and Posts Tagged ‘phytoplankton’


Returning to Port

STRAITS OF MAGELLAN-- Today we are arriving in Punta Arenas, Chile at 11am local time. After 8 hours through the Straits of Magellan we have finally finished our 30 day cruise. During the last few… {Read More »}



Primary Production

SOUTHERN OCAEN-- Phytoplankton were active in these waters during this June cruise. Although ten times lower than in the summer, their rates show an active winter community, able to survive the winter and take advantage… {Read More »}



Macronutrients Around the Iceberg

ICEBERG A43K, SOUTHERN OCEAN-- Phytoplankton need dissolved nutrients, such as silicate, phosphate, and nitrate to grow in seawater. Open waters in Antarctica are rich in those nutrients, particularly in winter when plant growth is limited… {Read More »}



The Ocean’s Carbon Content

ICEBERG A43K, SOUTHERN OCEAN-- Carbon sedimentation in the water, from its surface towards the ocean floor, is expected to increase around icebergs as a consequence of the chemical and physical environment conducive to plant and… {Read More »}



Iron-Limited Phytoplankton?

ICEBERG A43K, SOUTHERN OCEAN-- The waters of the Southern Ocean are considered High Nutrient Low Chlorophyll (HNLC) waters. In spite of abundant dissolved nitrogen, phosphorus and silica, plant biomass is not very abundant and the… {Read More »}



Life Around the Iceberg

ICEBERG A43K, SOUTHERN OCEAN-- Many birds, seals and whales are living around Iceberg A43K. We saw several of them as we approached the iceberg two days ago. In comparison, we had fewer sightings at SS-1,… {Read More »}



Our Changing Iceberg

SCOTIA SEA, SOUTHERN OCEAN-- Icebergs in the Southern Ocean are constantly moving and transforming. SS-1, the iceberg we are currently studying, is considered a "medium" iceberg. When we arrived, it was 2.3 nautical miles long… {Read More »}



Floating Communities

SOUTHERN OCEAN-- The main research pursuit behind our group of scientists' travel aboard the N.B. Palmer this month is to see how icebergs influence surrounding organisms. This influence could come directly to the organisms themselves… {Read More »}



Preparing for Antarctica

SAN DIEGO, CALIFORNIA-- On Monday 26 May I will depart for Punta Arenas, Chile, in the tip of South America, on my way to the Weddell Sea in Antarctica. I will be on my way… {Read More »}



The Microbial Loop

The Microbial Biogeochemistry group (B-045) (under the direction of Dr. Hugh Ducklow) is one of the science groups here on board the LM Gould. Our goal is to study the bacteria that live in the… {Read More »}