Figure from Photosynthetic characteristics of cyanobacteria in permanent ice covers on lakes in the McMurdo Dry Valleys, Antarctica

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Figure 1. Profiles of chlorophyll-a concentrations in the ice covers from seven lakes throughout the McMurdo Dry Valleys. Profiles of sediments (data not shown) show the same vertical distributions as chlorophyll-a. (mgl-1 denotes micrograms per liter.)