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Phytoplankton Composition and Photosynthetic Properties Associated with Water Masses in the George V Region of Antarctica

南极洲乔治五世地区与水体相关的浮游植物组成和光合特性

基本信息

批准号：
0105104
负责人：
Raymond Sambrotto
金额：
$ 3.93万
依托单位：
Columbia University
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2001
资助国家：
美国
起止时间：
2001-02-15 至 2002-01-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=0105104&HistoricalAwards=false
关键词：
Phytoplankton Composition Photosynthetic Properties Associated

项目摘要

The George V Coast (140 - 150 degrees E) is an understudied coastal region of Antarctica. This Small Grant for Exploratory Research adds a biological component to a project focusing on the shelf and bottom water formation along the coast. This research will determine basic information on the biological oceanography of the region and in particular, how its productivity is related to the local hydrographic fields. The specific goals are 1) to map the chlorophyll a distribution and the photosynthetic capacity of the phytoplankton of the regions, 2) to characterize the phytoplankton and microzooplankton populations in the region by direct microscopic analysis, and 3) to measure nitrate and silicate levels in the various water masses. These goals will provide information on to what extent biological production relates to regional water masses, on the biological nature of the local production and the association between function groups of plankon and the water masses of the region, and on the interaction between phytoplankton growth and nutrient draw-down. Results from the study can be used as the basis for more extensive hypotheses about the biological production and flux in the region and are likely to catalyze further research in the understudied Southern Ocean.

乔治五世海岸(东经140-150度)是南极洲一个未被充分研究的沿海地区。这项用于探索性研究的小额赠款为一个专注于沿海陆架和底层水域形成的项目增加了一个生物成分。这项研究将确定关于该区域生物海洋学的基本信息，特别是其生产力与当地水文场的关系。具体目标是：1)绘制该区域的叶绿素a分布和浮游植物的光合作用能力图；2)通过直接显微镜分析确定该区域的浮游植物和微型浮游动物种群的特征；以及3)测量不同水团中的硝酸盐和硅酸盐水平。这些目标将提供关于生物生产在多大程度上与区域水团有关、当地生产的生物学性质、浮游生物功能组与区域水团之间的联系以及浮游植物生长和营养物质消耗之间的相互作用的信息。这项研究的结果可作为关于该区域生物生产和通量的更广泛假设的基础，并有可能促进对未得到充分研究的南大洋的进一步研究。