Nutrients and primary production along the eastern Aleutian Island Archipelago
Nutrients and primary production along the eastern Aleutian Island Archipelago
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DOI：
10.1111/j.1365-2419.2005.00364.x
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发表时间：
2005-11
影响因子：
2.6
通讯作者：
C. Mordy;P. Stabeno;C. Ladd;S. Zeeman;D. Wisegarver;S. Salo;G. Hunt
中科院分区：
文献类型：
--
作者：
C. Mordy;P. Stabeno;C. Ladd;S. Zeeman;D. Wisegarver;S. Salo;G. Hunt
研究了阿留申群岛中部和东部海域营养盐（硝酸盐、磷酸盐和植酸）、叶绿素和初级生产力的分布。这些数据是从系泊（温度，盐度，硝酸盐，和电流）和两个水文研究巡航（2001年6月和2002年5月至6月）。在水文考察期间，测量了阿留申海峡东部和中部及其周围的盐度、温度、营养物质、叶绿素和初级生产。营养盐净输送是通过通道向北，它是相对较低的东部通道相比，中央的通行证。在较浅的东部通道，来自太平洋的水源是营养贫乏的阿拉斯加沿岸流，而在较深的中央通道，则是营养丰富的阿拉斯加流。在通道内，强烈的潮汐混合导致丰富的表面浓度，特别是在中央通道。叶绿素切片和卫星合成物从夏季表明高叶绿素东Samsartan通行证和非常低的叶绿素Samsartan和Seguam通行证之间。除了Seguam Pass的北方端和白令海东南部的陆架边缘附近，整个研究区域的产量相对较低。生产和叶绿素浓度最低的深通行证。这些结果表明，在通行证，深度混合抑制新的生产，但大量的开花可能会发生下游的通行证随后分层。北京华宇出版有限公司
The distribution of nutrients (nitrate, phosphate, and silicic acid), chlorophyll and primary productivity were examined in the central and eastern Aleutian Archipelago. The data were collected from moorings (temperature, salinity, nitrate, and currents) and two hydrographic research cruises (June 2001 and May-June 2002). During the hydrographic cruises salinity, temperature, nutrients, chlorophyll and primary production were measured in and around the eastern and central Aleutian Passes. The net nutrient transport through the passes was northward, and it was relatively low in the eastern passes compared to the central passes. In the shallow eastern passes the source water from the Pacific was the nutrient-poor Alaska Coastal Current, while in the deeper central passes it was the nutrient-rich Alaskan Stream. Within the passes, vigorous tidal mixing resulted in enriched surface concentrations, especially in the central passes. Chlorophyll sections and satellite composites from summer indicate high chlorophyll east of Samalga Pass and very low chlorophyll between Samalga and Seguam Passes. Production was relatively low across the study area, except at the northern end of Seguam Pass and in the vicinity of the shelf edge in the southeastern Bering Sea. Production and chlorophyll concentrations were lowest in the deep passes. These results suggest that, within the passes, deep mixing inhibits new production, but substantial blooms may occur downstream of the passes subsequent to stratification. © 2005 Blackwell Publishing Ltd.