Researchers crack the ice to study the Arctic marine food web -- Science Nation
Researchers crack the ice to study the Arctic marine food web
Scientists traveled to a town near the top of the world to study a creature at the bottom of the marine food chain--microscopic sea ice algae. Welcome to Barrow, Alaska, where a team of marine ecologists gears up to hit the sea ice--desolate terrain that is actually teaming with marine life.
With support from the National Science Foundation, Craig Aumack of Columbia University and a team have come here to investigate how algae in the sea ice contributes to the underlying marine ecosystems, and which marine organisms depend on the algae for nutrition. Some algae live dormant in the ice all winter, bloom when the spring sunshine kick-starts a growth cycle, and, eventually, migrate down to the bottom of the ice and enter the water column where they provide a nutritious dietary food source to many marine organisms.
Going forward, the changing climate could mean disruptions to the sea ice community, as well as loss of the ice habitat itself, likely affecting a near shore Arctic marine food web that begins with algae and ends with much larger creatures, such as whales and polar bears. Aumack says the algae could be considered a "canary in the coal mine" for climate change in the Arctic.
Original air date: November 17, 2014
Credit: National Science Foundation
Images and other media in the National Science Foundation Multimedia Gallery are available for use in print and electronic material by NSF employees, members of the media, university staff, teachers and the general public. All media in the gallery are intended for personal, educational and nonprofit/non-commercial use only.
Videos credited to the National Science Foundation, an agency of the U.S. Government, may be distributed freely. However, some materials within the videos may be copyrighted. If you would like to use portions of NSF-produced programs in another product, please contact the Video Team in the Office of Legislative and Public Affairs at the National Science Foundation.
Additional information about general usage can be found in Conditions.