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Locations and trophic status of lakes used in this study.

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posted on 10.01.2011 by Bronwyn E. Keatley, Elena M. Bennett, Graham K. MacDonald, Zofia E. Taranu, Irene Gregory-Eaves

These results are based on diatom-inferred total phosphorus estimates (DI-TP). Estimated trophic status for 43 lakes in North America ca. 1900 CE (A), and ca. 1990 CE (B) ; Estimated trophic status for 24 lakes in Europe ca. 1900 CE (C), and ca. 1990 CE (D). Lakes are classified as follows: ultraoligotrophic (dark blue); oligotrophic (medium blue); mesotrophic (light blue); eutrophic (light green); hypereutrophic (dark green).

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