{"id":211105,"date":"2022-10-04T16:37:30","date_gmt":"2022-10-04T20:37:30","guid":{"rendered":"http:\/\/www.montclair.edu\/csam\/?p=211105"},"modified":"2022-10-04T16:37:30","modified_gmt":"2022-10-04T20:37:30","slug":"professor-is-part-of-nature-communication-study-on-ancient-marine-dna-in-antarctic-sediment","status":"publish","type":"post","link":"https:\/\/www.montclair.edu\/csam\/2022\/10\/04\/professor-is-part-of-nature-communication-study-on-ancient-marine-dna-in-antarctic-sediment\/","title":{"rendered":"Professor is part of Nature Communication study on ancient marine DNA in Antarctic sediment"},"content":{"rendered":"

麻豆传媒在线 Acting Vice Provost for Research and Professor of Earth and Environmental Studies, Dr. Stefanie Brachfeld<\/a>, is co-author on a new study published in Nature Communications<\/a>. The study was led by Dr. Linda Armbrecht<\/a> at the University of Tasmania Institute for Marine and Antarctic Studies<\/a>, and was conducted using sediment cores recovered during International Ocean Discovery Program (IODP) Expedition 382 to the Scotia Sea, immediately north of the Weddell Sea sector of Antarctica. Dr. Brachfeld sailed on the 2019 marine expedition and was part of the shipboard team that constructed the magnetostratigraphy, a tool for determining the age of the sediment via its ability to record past reversals of the Earth\u2019s magnetic field.<\/p>\n

The fragments are the oldest authenticated marine sedaDNA discovered to date \u2013 and these have been preserved due to factors like very low temperatures and oxygen concentrations, and an absence of UV radiation\u2026To analyze these fragments, we use a new technique called sedaDNA analysis, which can help us decipher what has lived in the ocean in the past and when, across multiple ice-age cycles. With this knowledge, we can better predict how marine life around Antarctica will respond to ongoing climate change.<\/p>\n