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首页> 外文期刊>Oceanology >Comparative role of bacteria and phytoplankton in the pelagic organic carbon cycle in the eastern bering sea (pribilor islands area)
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Comparative role of bacteria and phytoplankton in the pelagic organic carbon cycle in the eastern bering sea (pribilor islands area)

机译：细菌和浮游植物在东白海（优势岛地区）的上层有机碳循环中的比较作用

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摘要

The structural and functional parameters of bacterioplankton and their dynamics were evaluated in different oceanographic domains of the Eastern Bering Sea in the late spring and summer. The number of bacteria varied from 0.5 X 10~6 to 3.9 X 10~6 cells/ml, the bacterial biomass ranged from 7 to 110 mg C/m~3, and the bacterial production varied from 0.32 to 27.4 mg C/m~2 per day. The minimum values of the bacterial abundance and production were observed during the termination of the photoplankton spring bloom, and the maximum values were found at the end of July, i.e. one and half months later. The intense growth of bacterioplankton in late July was basically defined by the significant concentrations of the substrate rather than by the temperature conditions. The ratio of bacterial carbon to phytoplankton carbon ranged from 6 to 15% during the decline of the phytoplankton bloom and increased up to 250-800% (in specific cases up to more than 2000%) in the period of the bacterial maximum. The respective changes in the ratio of bacterial production to primary production were from 0.5 to 61 (98)%. The share of the primary production involved in the bacterial food web varied from 1-4% in the time of the spring bloom termination to 27-308% during the bacterial peak. In this period, primary production provided from 5 to 50% of the bacterial production and bacterioplankton consumed the organic mater accumulated in the pelagic zone during the time before the bacterial peak.
机译：在春季和夏季的晚些时候，在白令东海的不同海洋域中评估了浮游细菌的结构和功能参数及其动力学。细菌数量在0.5 X 10〜6至3.9 X 10〜6细胞/ ml之间，细菌生物量在7至110 mg C / m〜3之间，细菌产量在0.32至27.4 mg C / m〜之间变化每天2次。在浮游植物春季开花结束期间观察到细菌丰度和产生的最小值，并且在7月底，即一个半月后发现最大值。 7月下旬浮游细菌的强烈生长基本上是由底物的高浓度决定的，而不是由温度条件决定的。在浮游植物水华减少期间，细菌碳与浮游植物碳的比例在6％至15％之间，在细菌最大时期则增加至250-800％（在特定情况下高达2000％以上）。细菌生产与初级生产的比率的相应变化为0.5％至61（98）％。细菌食物网中涉及的初级生产的份额从春季开花终止时的1-4％到细菌高峰期的27-308％不等。在此期间，初级生产占细菌产量的5％至50％，浮游细菌消耗了细菌高峰之前这段时间在浮游带中积累的有机物质。

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