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

9400256列文研究项目由北极系统科学（ARCSS）全球变化研究项目资助，由海洋科学部和极地项目办公室联合主办。研究将围绕一个独特的和密集的，多学科的研究考察北冰洋的部分，从未被广泛研究过。1994年美国/加拿大北冰洋科是与加拿大的一项合作努力，1994年夏季将有大约60名科学家乘坐加拿大和美国的破冰船。nsf资助的项目将集中于水文、生物学、古和海冰研究。从北冰洋的几个地区收集的数据将是有史以来的首批数据之一，这些数据将与提高我们对北极如何成为全球气候条件变化的一个指标，以及它如何影响更温和的海洋和地区的物理、化学和生物特征的理解高度相关。华盛顿大学和俄勒冈州立大学的研究人员之间的合作研究是AOS生物学项目的重要组成部分。该项目将测量浮游藻类和冰藻的存量和产量。这些参数将沿着巡航轨道确定，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，还将确定初级产量、新氮产量和再生氮产量、中浮游动物储量以及颗粒有机质和溶解有机质的空间分布。这些研究将用于评估北极盆地生产力的大小和碳流的主要途径。这项工作与其他合作努力相结合，将使人们更好地了解初级生产的作用、光合作用固定碳的命运，以及自养和异养过程在将颗粒和溶解形式的碳转化和运输到北冰洋系统、在北冰洋系统内部和从北冰洋系统中转移和运输中的相对重要性。＊＊＊

9400256 Lewin 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 ofchanging 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 Univ. of Washington and Oregon State University 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 transpo rting particulate and dissolved forms of carbon to, within, and from the Arctic Ocean system. ***