Liu Zhanfei

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Liu
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Zhanfei
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  • Article
    Analytical and computational advances, opportunities, and challenges in marine organic biogeochemistry in an era of "Omics"
    (Frontiers Media, 2020-09-02) Steen, Andrew D. ; Kusch, Stephanie ; Abdulla, Hussain A. ; Cakić, Nevenka ; Coffinet, Sarah ; Dittmar, Thorsten ; Fulton, James M. ; Galy, Valier ; Hinrichs, Kai-Uwe ; Ingalls, Anitra ; Koch, Boris P. ; Kujawinski, Elizabeth B. ; Liu, Zhanfei ; Osterholz, Helena ; Rush, Darci ; Seidel, Michael ; Sepulveda, Julio ; Wakeham, Stuart G.
    Advances in sampling tools, analytical methods, and data handling capabilities have been fundamental to the growth of marine organic biogeochemistry over the past four decades. There has always been a strong feedback between analytical advances and scientific advances. However, whereas advances in analytical technology were often the driving force that made possible progress in elucidating the sources and fate of organic matter in the ocean in the first decades of marine organic biogeochemistry, today process-based scientific questions should drive analytical developments. Several paradigm shifts and challenges for the future are related to the intersection between analytical progress and scientific evolution. Untargeted “molecular headhunting” for its own sake is now being subsumed into process-driven targeted investigations that ask new questions and thus require new analytical capabilities. However, there are still major gaps in characterizing the chemical composition and biochemical behavior of macromolecules, as well as in generating reference standards for relevant types of organic matter. Field-based measurements are now routinely complemented by controlled laboratory experiments and in situ rate measurements of key biogeochemical processes. And finally, the multidisciplinary investigations that are becoming more common generate large and diverse datasets, requiring innovative computational tools to integrate often disparate data sets, including better global coverage and mapping. Here, we compile examples of developments in analytical methods that have enabled transformative scientific advances since 2004, and we project some challenges and opportunities in the near future. We believe that addressing these challenges and capitalizing on these opportunities will ensure continued progress in understanding the cycling of organic carbon in the ocean.
  • Dataset
    Hurricane Harvey impacts on biogeochemistry of sediments assessed using samples collected in Mission-Aransas Estuary in south Texas from June 2017 to March 2019
    (Biological and Chemical Oceanography Data Management Office (BCO-DMO). Contact: bco-dmo-data@whoi.edu, 2021-03-05) Liu, Zhanfei ; Hardison, Amber ; Xue, Jianhong
    The impact of Hurricane Harvey on sediment biogeochemistry was assessed using sediment samples collected from June 2017 to March 2019 in Mission-Aransas Estuary in south Texas. Sediment core samples were sectioned and analyzed for mineral grain size, organic carbon and nitrogen, stable isotopic composition, pigments, plus sediment alkane and polycyclic aromatic hydrocarbons. For a complete list of measurements, refer to the full dataset description in the supplemental file 'Dataset_description.pdf'. The most current version of this dataset is available at: https://www.bco-dmo.org/dataset/839436
  • Dataset
    Hurricane Harvey impacts on biogeochemistry of water assessed using samples collected in Mission-Aransas Estuary in south Texas from June 2017 to March 2019
    (Biological and Chemical Oceanography Data Management Office (BCO-DMO). Contact: bco-dmo-data@whoi.edu, 2021-03-05) Liu, Zhanfei ; Hardison, Amber ; Xue, Jianhong
    The impact of Hurricane Harvey on the chemical composition of water was assessed using samples collected from June 2017 to March 2019 at Mission-Aransas Estuary in south Texas. Hydrographic measurements including temperature, salinity, dissolved oxygen, and pH were collected on site using a YSI sonde. Water samples were obtained from both surface and bottom depths at 19 sites, and later analyzed for dissolved nutrients, organic carbon and nitrogen, and pigments. For a complete list of measurements, refer to the full dataset description in the supplemental file 'Dataset_description.pdf'. The most current version of this dataset is available at: https://www.bco-dmo.org/dataset/839385