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EAGER项目将比较南极半岛沿海海湾冰盖下的南极群落的基因表达模式。 之前的努力利用了2015年11月和12月独特的冰条件，使研究人员能够进行一项实验，以研究海冰覆盖对冬春过渡期间微生物碳和能量转移的作用。EAGER的努力将使研究人员能够对浮游植物进行“组学”分析，以确定在这些环境中获取和使用能量的主要方式。 EAGER的这一努力将应用新的专业知识，以填补沿着西南极半岛生态观测的现有空白。拟议工作的主要产品将是一个新的数据集进行分析，并由来自服务不足社区（退伍军人）的早期职业研究人员。 该数据集中包含的关键基线数据能够比较真核和原核基因表达模式，以确定实验期间化学自养、异养、兼养和光养的相对重要性。 这些信息和数据将立即提供给更广泛的科学界，并将有助于随着该区域海冰覆盖面的变化，就生态系统变化提出进一步的假设。目前南极海洋环境的基因表达数据非常少，在生态关键的冬季到春季过渡期间也没有基因表达数据。 此外，冰覆盖在海湾是常见的沿着西南极半岛，但机会，以研究隐藻浮游植物的生理下，这种冰条件下，在沿海海湾是罕见的。