Autumn Ecology of the Pack Ice Biota

浮冰生物群的秋季生态

• 批准号: 9117794
• 负责人: Marcia Gowing
• 金额: $ 9.12万
• 依托单位: University of California-Santa Cruz
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-01-01 至 1995-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9117794&HistoricalAwards=false
• 关键词: Autumn; Ecology; Pack; Ice; Biota

Seasonal drifting pack ice covers vast regions of the Southern Ocean. The biota in pack ice are found throughout the ice floes, and this has been attributed to the harvesting and concentration of organisms from the water during frazil ice formation. The frequent formation of frazil ice and the concentration of organisms in newly-forming ice is one of the fundamental differences between the pack ice and the land fast ice habitats. During the autumn to winter transitional light levels and atmospheric temperatures decrease and a considerable amount of seasonal sea ice forms. Organisms incorporated into ice floes during this season will be subjected to low temperature, high in situ salinities and low light. This project will examine the process of the incorporation of organisms into ice to determine if selection occurs, if organisms survive and if some organisms form resting stages as a means for insuring overwinter survival. This is part of an international, multidisciplinary study of the pack ice system. This project will be a key part of the collaboration, which focuses on biological, physical and chemical processes during the autumn ice-forming season.

季节性浮冰覆盖南大洋的广大地区。 浮冰中的生物群遍布整个浮冰，这归因于碎冰形成过程中从水中收集和浓缩生物体。 碎冰的频繁形成和新形成的冰中生物的集中是浮冰和陆地固定冰栖息地之间的根本区别之一。 在秋季到冬季的过渡期间，光照水平和大气温度降低，并形成大量季节性海冰。 在这个季节融入浮冰的生物将遭受低温、高盐度和低光照的影响。 该项目将检查生物体融入冰的过程，以确定是否发生选择、生物体是否存活以及某些生物体是否形成休眠阶段作为确保越冬生存的手段。 这是浮冰系统国际多学科研究的一部分。 该项目将是合作的关键部分，重点关注秋季结冰季节的生物、物理和化学过程。