Trends in ocean colour and chlorophyll concentration from 1889 to 2000, worldwide.

PLoS One · 2013 · PMC3680421 · PMID 23776435

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closest p · 0.0× alpha

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a significant trendp<0.0001actually significant

For the five oceans under investigation a significant trend was found (p<0.0001, significance level of 0.05).

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highly significantno p-value reported

Indeed, for the clearest oceanic waters ( FU = 1 to 4), where algal pigments are the dominant factor of light absorption, a highly significant exponential relation was found between the FU index and chlorophyll concentration ( Figure 8A ).

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