求是海洋学术论坛2025年10期（总74期）——Exploring algal lipid metabolism for a sustainable bioeconomy & Antarctic Surface Water Intrusion Triggering Seasonal Rapid Basal Melting of Drygalski Ice Tongue, East Antarctica
一、时间：2025年4月22日（周二）14:00
二、地点：舟山校区海科楼342
三、主持人：浙江大学海洋学院 傅维琦研究员
报告一
主讲人：艾克斯-马赛大学Yonghua Li教授
报告题目：Exploring algal lipid metabolism for a sustainable bioeconomy
报告摘要：
Microalgae are fast-growing microorganisms that have developed efficient mechanisms to harvest and transform solar energy into energy-rich molecules such as lipids. They are thus potentially great renewable cell factories for the production of fuels and biomaterials for the chemical industries. However, a central issue is the inverse relationship observed between cell growth and cellular lipid content, i.e., conditions favoring a higher oil content per cell often compromise cell growth and, therefore, lipid productivity. What makes the matter worse is that oil contents fluctuate in response to environmental cues. To find solutions to overcome these issues, we studied lipid metabolism and investigated the genetic, biochemical as well as environmental regulation of lipid metabolism in the model microalga Chlamydomonas reinhardtii. In this talk, I will present our current knowledge on the role of lipid metabolism in adaptation to a changing environment and discuss the exploration of this natural capacity for human benefit.
主讲人简介：
Yonghua Li，博士毕业于英国赫尔大学，并先后在英国牛津大学和美国密西根州立大学进行博士后研究。现任法国科学院、法国原子能与新能源研究所以及艾克斯-马赛大学联合创办的再生能源研究院环境生物能源和藻类-植物课题组长、高级研究员，并担任The Plant Cell、mSphere等期刊编辑和New Phytologist期刊编委。她的研究重点是碳中和背景下的微藻代谢、生理学和生物技术，在Science、Nature、Plant Cell、PNAS、National Science Review等期刊上发表100余篇论文。
报告二
主讲人：上海交通大学海洋学院 王显威副教授
报告题目：Antarctic Surface Water Intrusion Triggering Seasonal Rapid Basal Melting of Drygalski Ice Tongue, East Antarctica
报告摘要：
Antarctic glaciers are losing ice rapidly to the ocean through basal melting of ice shelves/tongues. To better predict future sea level rise, it is urgent to detect the rapid basal melting of ice shelves/tongues as well as ocean’s role in this process. In this study, basal melting of Drygalski Ice Tongue (DIT), the seaward extension of David Glacier in Northern Victoria Land, East Antarctica has been detected using a surface deployed Autonomous Phase-sensitive Radio-Echo-Sounder (ApRES). The ocean water changes adjacent to DIT front have been revealed using an ocean mooring. The ApRES observations suggest a rapid basal melting > 10 m/a close to DIT front in February and mooring data shows a synchronous ocean warming in austral summer, indicating Antarctic Surface Water intrusion to the base of DIT. The mooring data has been used to simulate the basal melting of DIT front, which coincides with ApRES measurements. We conclude that rapid basal melting close to the tongue front was likely triggered by intrusion of Antarctica Surface Water in austral summer. Glacier-ocean interactions, such as glacier basal melting, can be detected from spaceborne, terrestrial and oceanic observations and are important processes to predict future sea level changes. To better understand the driving forces of glacier changes, multi-disciplinary observation and numerical modeling are required.
主讲人简介：
王显威，上海市海外高层次人才引进计划，国家自然科学基金优秀青年基金（海外）项目入选者。先后在北京师范大学、俄亥俄州立大学和纽约大学阿布扎比分校开展与极地冰川变化相关的研究。主要研究遥感在地球科学研究中的应用，尤其关注极地冰川变化及冰川-海洋交互作用。利用光学、雷达遥感和高度计数据探测南极和格陵兰岛典型冰川的三维立体变化，并结合冰川实地测量、海洋观测数据以及冰川-海洋模型等进行冰川-海洋相互作用研究。分别参加过四次南极和格陵兰岛考察，具有丰富的极地科学考察经验，在Cryosphere、Remote Sensing of Environment等期刊发表文章28篇。