Natural Fe Fertilization and Bioactive Metal Dynamics on the Western Antarctic Peninsula Shelf

南极半岛西部的大陆架水域具有初级生产力高的特点，但其西部和北部受到明显的铁限制的南极环极流的限制。生物可利用铁修正的自然来源被认为多种多样，包括大气沉积、大陆架上上涌的极地深水浅滩、冰川和冰山融化，甚至来自下伏的浅层大陆架沉积物。作为正在进行的Palmer LTER（长期生态研究）计划的一部分，对水柱分布、生物吸收研究以及各种形式的铁和其他生物活性元素的动力学的综合研究将用于为WAP的物理和生物地球化学模型提供信息。南极半岛西部是近年来气候变化迅速的地区，也是监测极地海洋从大气中吸收碳的重要时间序列站点。目前在Palmer LTER站点的背景下研究的生态过程如何适应变暖的海洋是科学教育界、公众和整个社会对从海洋健康到全球海平面上升等问题感兴趣的。

The shelf waters off the Western Antarctic Peninsula characteristically show high primary productivity, yet are bounded to the west and north by an apparently iron limited Antarctic Circumpolar Current. Natural sources of bioavailable Fe amendments are thought variously to arise from atmospheric deposition, upwelled Circumpolar Deep Water shoaling over the continental shelf, glacier and iceberg melting or even inputs from underlying shallow shelf sediments. As part of the ongoing Palmer LTER (Long-Term Ecological Research) program, a comprehensive study of the water column distribution, bio-uptake studies and the dynamics of various forms of Fe and other bioactive elements will be used to inform physical and biogeochemical models of the WAP. The Western Antarctic Peninsula is a region of recent rapid climate change and also an important time series site for monitoring carbon uptake from the atmosphere, by the polar ocean. How ecological processes currently being studied in the context of the Palmer LTER site are adapting to a warming ocean is of interest to the science education community, the public, and society at large on issues ranging from the health of the oceans to global sea level rise.