時 間：2018-11-5 (星期一) 11:40am-1:00pm Seminar starts at 12:00pm
主 講：謝聿原，杰出博士后 Yuyuan Xie
地 點：周隆泉樓A3-206 A3-206 Zhou Long Quan Building
【來訪單位 Institution】：廈門大學近海海洋環境科學國家重點實驗室，中國
【邀請人 Host】：胡建宇 Jianyu Hu 【聯絡人 Contact】：黃迎 Ying Huang 2181571
報告摘要
初級生產力PP又稱基礎生產力，眾所周知非常重要，由初級生產者（主要是浮游植物）所貢獻，是海洋生態系統能量和物質的來源，是食物鏈的基礎。上世紀50年代發明了14C示蹤法測量PP，此后這個方法為海洋科學研究貢獻巨大，使人類認識到海洋生產了地球上一半的有機碳，但所遭受的質疑也是從未間斷過，“14C-PP值能不能代表真實的PP？”是每個人都想問的問題。14C方法被諸多質疑，可謂“毀譽參半”。其中關鍵的點是光合作用不是一個簡單的過程，而是一系列反應的集成，不同條件或不同方法測量的常常是不同位點上的速率，我們可以將它們定義為不同的“通貨”，且“通貨”之間存在著“匯率”。因此我們需要“解剖”PP，研究PP的“解剖學”。對于水柱積分PP而言，也需要進行另一個層面上的“解剖”，才能更好地認識海洋初級生產的時空分布。
Abstract
Phytoplankton contributes most of the primary production (PP) in the sea, which is the foundation of marine ecosystems. The method of using 14C as a tracer to measure the PP has played a critical role in the progress of marine research ever since the method was invented in the 1950s. The seamark achievement is that the ocean has been discovered to produce half of the organic carbon in the earth. But the 14C method is as much blamed as praised. The top criticism is the question “Is the measured 14C-PP the true PP?” almost everyone in the community would ask. The key of the answer to this question is that photosynthesis is a chain of reactions, not only one simple reaction the chemical equation appears. The measured rates are of different reaction sites depending on the environments and the choice of methodology. We may name them as different “currencies” and use the “exchange rate” to link them together. That is what “anatomy of marine primary production” going to address. I’m going to disassemble the phytoplankton photosynthesis. In addition, the depth-integrated PP needs to be disassembled as well, though the analysis is different.
個人簡介
謝聿原的科研生涯從嘗試研究藻類二氧化碳濃縮機制CCM開始，研究生期間主要在CHOICE-C航次中用14C做為tracer測量和研究海洋初級生產力PP，博后期間開始學習一些海色遙感知識，嘗試進入新的研究方向。作為一個海洋人，希望自己在未來的道路上能做到兩點：（1）了解海洋，分享知識；接下來工作將以光和碳的耦合為主線，結合藻類形態、熒光、海色遙感等要素探討浮游植物固碳的奧秘。（2）助力保護藍色海洋的事業；期望能優化生物量和生產力的觀測手段，可以更好地監控海洋環境的質量，保護海洋資源。
