Photobiology of Sea Ice Microalgal Species

南大洋的初级生产主要来自微藻 光合作用在水柱和海冰中。 虽然生产在 开放的沃茨似乎很低，边缘冰区的产量似乎 嗨起来。 最近的证据表明，海冰的产生可能是 为南大洋生态系统生产的很大一部分。 这 基于成就的更新提案将继续海冰藻类 沙利文博士和他的团队进行的生产力研究。 他们的 结果和其他人的结果表明，冰藻的生产力是 受光照和温度的限制，而不是养分 空房的 这个项目将集中在个人的光生物学 使用高分辨率显微光度计的海冰微藻种类 技术，高效液相色谱技术，以及 径迹显微放射自显影 实验室工作将表征 光合参数的个别物种占主导地位， 南极海冰系统的各种微生境。 这将 为发展海冰模型提供必要的数据集 生态系统生产力

Southern Ocean primary production derives largely from microalgal photosynthesis in the water column and in sea ice. While production in open waters appears low, production in the marginal ice zones appears to be high. Recent evidence suggests that sea ice production may account for a substantial fraction of Southern Ocean ecosystem production. This Accomplishment-Based Renewal proposal will continue the sea-ice algal productivity studies carried out by Dr. Sullivan and his team. Their results and those of others suggest that ice algal productivity is limited by light availability and temperature rather than nutrient availability. This project will focus on the photobiology of individual sea ice microalgal species using high resolution microphotometric techniques, high performance liquid chromatographic techniques, and track microautoradiography. Laboratory efforts will characterize the photosynthetic parameters for the individual species which dominate in various microhabitats of the Antarctic sea ice system. This will provide the data set necessary for the development of models of sea ice ecosystem productivity.