Dynamic Imaging Particle Analysis Blog

Rynearson Lab Uses FlowCam Aboard Icebreaker NB Palmer to Capture Phytoplankton Images


Antarctic Phytoplankton Rivals Charismatic Megafauna

Students and postdocs in the Rynearson lab study organisms as tiny as bacteria and as large as Antarctic krill (oh look krill). 


The focus of study in the lab is predominantly diatoms (phytoplankton that generate about 40% of all primary production in the worlds oceans).  Study sites include local Narrangansett Bay waters, the Atlantic, Pacific and Southern Oceans - aboard the NB Palmer Icebreaker.

The Rynearson lab concentrates on understanding how plankton diversity is shaped by both ecological and evolutionary process, with a goal of assessing the impact of those processes on plankton community structure, function and productivity.

Some projects include examining the response of phytoplankton to climate change, understanding the relative roles of dispersal and natural selection in determining the structure and productivity of planktonic communities, and investigating metabolic response to nutrient stress in phytoplankton.

In a recent blog post Tatiana Rynearson shares some photos of scientists using the FlowCam to view samples of Antarctic charismatic organisms.

Capture- Southern Ocean Tatiana Blog.jpg

 Pretty amazing images of Antarctic creatures of the tiniest size.

Follow along their research cruise (Antarctic Plankton in a Changing World) now through January 23rd.

"On this Antarctic cruise, we’ll study how plankton adapt to new environments, particularly those driven by climate change. We’ll measure the genetic diversity of diatoms (a planktonic algae with key roles in marine food webs and biogeochemical cycles) and examine how diatoms respond to changes in water temperature and ocean acidification. This cruise is the first step in a 4 year collaborative project between oceanographers and evolutionary biologists."


 

 

Topics: Marine Algae, phytoplankton,, chlorophyll,, Antarctica