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After a volcanic eruption spilled lava into North Pacific Ocean waters, a dramatic increase of diatoms (a kind of phytoplankton) near the surface occurred. Scientists assumed the diatoms were thriving on nutrients such as phosphate from the lava, but analysis showed these nutrients weren't present near the surface in forms diatoms can consume. However, there was an abundance of usable nitrate, a nutrient usually found in much deeper water and almost ne ver found in lava. Microbial oceanographer Sonya Dyhrman and colleagues believe that as the lava plunged nearly 300 meters below the surface it dislodged pockets of this nutrient, releasing it to float upward. Given that data shows nitrate levels in the lava-affected area were 3.1 micromoles/L (at 5-45m depth) and 0.4 micromoles/L (at 75-125m depth) compared to <=0.03 micromoles/L and <=0.01 micromoles/L outside the area respectively, which choice most effectively uses data from the table to complete the statement?