A Preliminary Assessment of the Influence of Ice Cover on Microbial Carbon and Energy Acquisition during the Antarctic Winter-spring Seasonal Transition

南极冬春季节转换期间冰盖对微生物碳和能量获取影响的初步评估

• 批准号: 1656344
• 负责人: Jeff Bowman
• 金额: $ 14.32万
• 依托单位: University of California-San Diego Scripps Inst of Oceanography
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2016
• 资助国家: 美国
• 起止时间: 2016-08-01 至 2018-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1656344&HistoricalAwards=false
• 关键词: Preliminary; Assessment; Influence; Ice; Cover

This EAGER project will compare gene expression patterns in the planktonic communities under ice covers that form in coastal embayment's in the Antarctic Peninsula. Previous efforts taking advantage of unique ice conditions in November and December of 2015 allowed researchers to conduct an experiment to examine the role of sea ice cover on microbial carbon and energy transfer during the winter-spring transition. The EAGER effort will enable the researchers to conduct the "omics" analyses of the phytoplankton to determine predominant means by which energy is acquired and used in these settings. This EAGER effort will apply new expertise to fill an existing gap in ecological observations along the West Antarctic Peninsula. The principle product of the proposed work will be a novel dataset to be analyzed and by an early career researcher from an underserved community (veteran). The critical baseline data contained in this dataset enable a comparison of eukaryotic and prokaryotic gene expression patterns to establish the relative importance of chemoautotrophy, heterotrophy, mixotrophy, and phototrophy during the experiments. this information and data will be made immediately available to the broader scientific community, and will enable the development of further hypotheses on ecosystem change as sea ice cover changes in the region. Very little gene expression data is currently available for the Antarctic marine environment, and no gene expression data is available during the ecologically critical winter to spring transition. Moreover, ice cover in bays is common along the West Antarctic Peninsula yet the opportunity to study cryptophyte phytoplankton physiology beneath such ice conditions in coastal embayments is rare.

这个急切的项目将比较在南极半岛沿海胚胎中形成的冰块下浮游群落中的基因表达模式。 以前的努力在2015年11月和12月利用独特的冰条件，使研究人员能够进行实验，以检查海冰覆盖在冬季春季过渡期间微生物碳和能量转移的作用。急切的努力将使研究人员能够对浮游植物进行“幻象”分析，以确定在这些环境中获取和使用能量的主要手段。 这项渴望的努力将采用新的专业知识来填补南极半岛西部生态观察的现有空白。拟议工作的主要产品将是一个新颖的数据集，并由服务不足的社区（老将）的早期职业研究员进行分析。 本数据集中包含的临界基线数据可以比较真核和原核基因表达模式，以确定实验过程中化学自由营养，杂质，混合营养和光营养的相对重要性。 这些信息和数据将立即提供给更广泛的科学界，并将随着该地区的海冰覆盖的变化而开发有关生态系统变化的进一步假设。目前，几乎没有基因表达数据可用于南极海洋环境，并且在春季过渡到生态关键的冬季至关重要的基因表达数据。 此外，海湾中的冰盖很常见于南极半岛，但在沿海胚胎的这种冰条件下，在这种冰条件下研究隐藻植物生理学的机会很少。