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首页> 外文期刊>Oceanology >Phaeocystis pouchetii at the Eastern Bering Sea Shelf
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Phaeocystis pouchetii at the Eastern Bering Sea Shelf

机译：东白令海架上的Phaeocystis pouchetii

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During the three spring-summer seasons of 1992-1994, the distribution of Phaeocystis pouchetti was studied in the middle and outer domains of the southeastern Bering Sea shelf, in the deepwater areas adjacent to the continental slope, and in the coastal zone of the Pribilof Islands. The P.pouchetti blooms were encountered in the late spring (June 1993) and in the summer (July 1994) seasons at a water temperature of 4-8 deg C. The duration of blooms varied from two to four weeks and longer. In the course of the blooms, the maximum number of P. pouchetti colonies reached ten thousand per liter, and the peak abundance of solitary cells was as high as a few million per liter. Along with P. pouchetti, other phytoplankton species, mainly from diatoms, were abundant too. Degradation of the Phaeocystis blooms at the shelf was accompanied by an increase in the abundance of bacterioplankton, geterotrophic nano-and microplankton, in particular, and choanoflagellates. A great biomass of the Phaeocystis colonies under degradation in the shallow coastal zones of the islands and in some parts of the middle shelf sinks down to the bottom and is involved in the benthic foodweb. At the outer shelf, in the pat of the domain of the middle shelf, and in the deepwater areas adjecent to the continental slope, most of the Phaeocystis biomass is utilized in the pelagic foodweb, to a great extent, through the bacterial trophic chain.
机译：在1992-1994年的三个春夏季节期间，研究了白藻袋囊在白令海东南部中部和外域，与大陆斜坡相邻的深水区域以及Pribilof沿海地区的分布。岛屿。 P.pouchetti花朵在春季的春季（1993年6月）和夏季的夏天（1994年7月）在水温4-8摄氏度时遇到。花朵的持续时间从两周到四周不等，甚至更长。在开花过程中，Pouchetti菌落的最大数量达到每公升一万个，单生细胞的峰值丰度高达每公升几百万个。除P. pouchetti外，其他主要来自硅藻的浮游植物种类也很丰富。架子上的囊藻水华的降解伴随着浮游细菌，特别是营养营养的纳米和微浮游生物，尤其是鞭毛藻的丰度增加。在岛屿的浅海沿岸地区和中部架子的某些区域，退化中的巨大囊藻菌落大量生物沉没到底部，并与底栖食物网有关。在外层架，中层架域的区域以及与大陆坡相邻的深水区，大部分Phaeocystis生物量在很大程度上通过细菌的营养链被用于中上层食物网。

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