Standing Stocks and Production Rates in the Canada, Makarov,and Eurasian Basins of the Arctic Ocean: The Role of Lower Trophic Level Processes in the Arctic Carbon Cycle

9400306惠勒研究由这笔赠款资助，由北极系统科学全球变化研究计划赞助，由海洋科学部和极地方案办公室联合赞助。这项研究将围绕着对北冰洋从未被广泛研究的部分进行一次独特的、密集的、多学科的研究考察。1994年美国/加拿大北冰洋部分是与加拿大的一项合作努力，将有大约60名科学家在1994年夏天在一艘加拿大破冰船和一艘美国破冰船上工作。NSF资助的项目将集中在水文地理学、生物学、古生物和海冰研究上。从北冰洋几个地区收集的数据将是有史以来最早的数据之一，对于增进我们对北极如何成为全球气候条件变化的指标以及它如何影响较温和海洋和地区的物理、化学和生物特征的理解，将具有非常重要的意义。这是俄勒冈州立大学和大学的研究人员之间的合作研究成果。代表着AOS生物学计划的一个重要组成部分。该项目将测量浮游生物和冰藻的现存量和生产率。这些参数将沿着邮轮航道确定，这将是北冰洋部分地区首次进行此类测量。除浮游植物丰度外，还将确定初级生产量、新的和再生的氮生产量、中游动物种群以及颗粒有机物和溶解有机物的空间分布。这些研究将用于评估北极盆地生产力的大小和碳流动的主要途径。这项工作与其他合作努力将使人们更好地理解初级生产的作用、光合作用固定碳的去向，以及自养和异养过程在将颗粒和溶解形式的碳转化和输送到北冰洋系统、在北冰洋系统内和从北冰洋系统转移中的相对重要性。***

9400306 Wheeler Research supported by this grant is under the auspices of the Arctic Systems Science (ARCSS) Global Change Research Program and is jointly sponsored by the Division of Ocean Sciences and the Office of Polar Programs. The research will be centered around a unique and intensive, multidisciplinary research expedition to parts of the Arctic Ocean that have never been extensively studied. The 1994 U.S./Canada Arctic Ocean Section is a collaborative effort with Canada that will involve approximately 60 scientists on a Canadian and a U.S. icebreaker during summer 1994. NSF-funded projects will focus on hydrography, biology, paleo-, and sea-ice studies. Data collected will be amongst the first ever from several regions of the Arctic Ocean and will be highly relevant to improving our understanding of how the Arctic is an indicator of changing global climate conditions and how it affects the physical, chemical, and biological features of the more temperate oceans and regions. This collaborative research effort between investigators at the Oregon State University and Univ. of Washington represents a critical component of the AOS biology program. The project will measure standing stocks and production rates of planktonic and ice-algae. These parameters will be determined along the cruise track and will be the first such measurements from parts of the Arctic Ocean. In addition to phytoplankton abundances, primary production, new and regenerated nitrogen production, mesozooplankton stocks, and spatial distribution of particulate organic matter and dissolved organic matter will be determined. These studies will be used to evaluate the magnitude of Arctic basin productivity and the major pathways for the flow of carbon. This work in conjunction with other collaborative efforts will lead to a greater understanding of the role of primary production, fate of photosynthetically fixed carbon, and the relative importance of autotrophic and heterotrophic processes in transforming and tran sporting particulate and dissolved forms of carbon to, within, and from the Arctic Ocean system. ***