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Scientists uncover extreme life inside the Arctic ice

In brief Researchers studied single-celled algae, called diatoms, from the Arctic that were previously assumed to be hibernating in the ice and found they were actually quite active. This activity, which continued when temperatures dropped to -15 C, is the coldest-ever movement recorded for a eukaryotic cell. The diatoms move through a type of gliding, which is enabled by a combination of mucus and molecular motors that are similar to systems seen in human muscles. Given how abundant these di

Scientists Stunned as Tiny Algae Keep Moving Inside Arctic Ice

Scientists know that microbial life can survive under some extreme conditions—including, hopefully, harsh Martian weather. But new research suggests that one particular microbe, an algal species found in Arctic ice, isn’t as immobile as it was previously believed. They’re surprisingly active, gliding across—and even within—their frigid stomping grounds. In a Proceedings of the National Academy of Sciences paper published September 9, researchers explained that ice diatoms—single-celled algae wi

Shifts in diatom and dinoflagellate biomass in the North Atlantic over 6 decades

Abstract The North Atlantic Ocean has large seasonal blooms rich in diatoms and dinoflagellates which can contribute disproportionately relative to other primary producers to export production and transfer of resources up the food web. Here we analyze data from the Continuous Plankton Recorder to reconstruct variation in the surface ocean diatom and dinoflagellate community biomass over 6 decades across the North Atlantic. We find: 1) diatom and dinoflagellate biomass has decreased up to 2% per