British and Canadian scientists produced the estimates by two independent methods, as part of a study of the role played by fish in the marine carbon cycle, which is changing as carbon dioxide, added to the atmosphere by human activities, dissolves in sea water.
作为鱼类在海洋碳循环中所发挥作用的研究的一部分，英国和加拿大科学家运用两种独立的方法做出了上述估算。随着大气中由于人类活动增加的二氧化碳溶解在海水中，海洋碳循环也在不断改变。
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