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Fig. 4


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Proportion of the phytolittoral area covered by charophyte communities (%Chara) in lake-surveys classified into high (H), good (G), moderate (M), poor (P) and bad (B) ecological status classes based on the Ecological Status Macrophyte Index (n = 739 lake-surveys); box-plots represent quartile range (box) with median (line), non-outlying range (whiskers), extreme (circles) and outlying (star) values.

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