Recent Warming, Rather than Industrial Emissions of Bioavailable Nutrients, Is the Dominant Driver of Lake Primary Production Shifts across the Athabasca Oil Sands Region.

PLoS One · 2016 · PMC4852901 · PMID 27135946

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a decreasing trendno p-value reported

Similarly, RAMP 226 shows a decreasing trend from the late-1990s to the late-2000s with a subsequent return to early-1990s concentrations by 2011.

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