Ozone Diminution, Ultraviolet Radiation and Phytoplankton Biology in Antarctic Waters

紫外线（UV）增加的生物后果 由于南极臭氧层而到达地球表面的辐射 最近有记录显示。基于直接原位 紫外线辐射和初级生产力的测量， 据估计，臭氧对浮游植物造成的损害 至少减少了6%到12%， 南部边缘冰区的初级生产力 海洋本项目将通过开发 入射和穿透光谱的时空气候学 南大洋的辐射。此外，规模和 有机碳和UV依赖性生产的动力学 将确定光损伤。这些数据将在 初级生产力的生物光学模型。结果 将大大有助于预测变化的能力， 在浮游植物群落中， 辐射，并为开发模型提供经验基础 试图评估更高营养水平的后果 在南极食物网中。

The biological consequences of increased ultraviolet (UV) radiation reaching the Earth's surface due to the Antarctic Ozone Hole has recently been documented. Based on direct in situ measurements of ultraviolet radiation and primary productivity, it was estimated that ozone-related damage to phytoplankton resulted in a minimum of six to twelve per cent reduction in primary productivity within the marginal ice zone of the Southern Ocean. This project will further examine this topic by developing a space and time climatology of incident and penetrating spectral irradiance for the Southern Ocean. Also, the magnitude and kinetics of UV dependent production of organic carbon and UV photodamage will be determined. The data will be examined in the context of a bio-optical model of primary productivity. Results will contribute significantly to abilities to predict changes within phytoplankton communities experiencing enhanced UV radiation and provide an empirical basis for developing models attempting to assess the consequences for higher trophic levels in the Antarctic food web.