Physical and biological factors influencing the spatial distribution of age-0 walleye pollock (Theragra chalcogramma) around the Pribilof Islands, Bering Sea

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• 作者：Ciannelli ; Lorenzo ; Brodeur ; Richard D. ; Swartzman ; Gordon L. ; Salo ; Sigrid
• 刊名：Deep Sea Research Part II: Topical Studies in Oceanography
• 出版年：2002
• 出版时间：December, 2002
• 年：2002
• 卷：49
• 期：26
• 页码：6109-6126
• 全文大小：449 K

文摘

The waters around the Pribilof Islands, in the southeast Bering Sea, are a main nursery area for age-0 pollock. Each summer, the islands are surrounded by a well-mixed inshore region, separated from a stratified offshore region by a frontal zone. To study the spatial distribution of age-0 pollock around this frontal structure in relation to physical and biological factors that are likely to influence it, such as advection, age-0 pollock feeding, and predation, samples were collected during September of four consecutive years, 1994–97, along two transects. Samples collected included water column hydrography and currents, acoustic backscatter, and groundfish predator density.