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Marine primary production in the Canadian Arctic, 1956, 1961-1963

机译:1956年,1961-1963年,加拿大北极地区的海洋初级生产

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Marine primary productivity studies pursued in the Canadian Arctic in 1961-1963, using standard techniques (oxygen and carbon-14) of the time, showed that maximum production developed rapidly in July at 5-m depth under very low light intensities and under intact but melting sea ice. The time of maximum production was correlated with depths of snow in spring. Low production levels were found in August in those years and estimated in 1956. Nitrate exhaustion occurred before maximum production and was followed by rapid sinking of chlorophyll and productivity and reduction of assimilation numbers. Gross production values greatly exceeded net production values in 1961-1963, and gross production in 2 years was about double that of a third year, which may be due to different initial conditions of nutrient concentrations in the euphotic zone. Interannual variability in primary production may be the result of changes in water masses in the surface layer, as driven by atmospheric pressure patterns.
机译:1961-1963年,加拿大航海采用当时的标准技术(氧气和碳14)进行了海洋初级生产力研究,结果表明,在极低的光照强度和原封不动的情况下,7月份在5米深度迅速达到了最大产量。海冰融化。最高产量的时间与春季积雪的深度有关。在那年的八月发现低水平的生产,并在1956年进行了估算。硝酸盐的消耗在最大产量之前发生,随后叶绿素迅速下沉,生产力下降,同化数量减少。总产值大大超过了1961-1963年的净产值,两年内的总产值大约是第三年的两倍,这可能是由于富营养区养分浓度的初始条件不同所致。初级生产中的年际变化可能是由于大气压力模式驱动下表层水质变化的结果。

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