讲座题目：Microbial food web structure in a changing Arctic 主讲人：Dr. Tatiana M.Tsagaraki 主持人：Dr. Richard Bellerby 开始时间：2019-09-10 10:00:00 讲座地址：闵行校区河口海岸大楼B101报告厅 主办单位：河口海岸学国家重点实验室
报告人简介： Dr. Tsagaraki’s research interests lie within marine microbial ecology with a focus on understanding the mechanisms that control microbial food web structure and function. Specifically she is interested in predator/ prey interactions and how these shape community dynamics and community elemental composition, what triggers changes in composition and what repercussions these changes have to food web functionality. The driving force of her research is to understand the energy transfer from the microbial food web to higher trophic levels and nutrient cycling. Her research goal is to connect the interactions and processes She study to changing ecosystem health and resilience, and potential cascading effects on society and the environment. She utilize field, experimental and modelling approaches in a wide, collaborative network since believe the challenges presented in multidisciplinary environments create essential, thought provoking ideas with great potential to move science forward. 报告内容： Predicting implications of change in the Arctic requires an understanding of fundamental components of the ecosystem. From our previous work in the Arctic, our working hypothesis is that bacterial consumption of organic carbon is strongly dependent on the standing stock of copepods. The availability of organic substrates and changes in predator pressure are the two major components of this hypothesis, both projected to change the former due to ice melting and riverine input, and the later due to changing migration/advection patterns.The talk will take us through how changes in organic carbon supply and top down control can affect resource allocation, nutrient cycling and community dynamics in microbial food webs. |
