Classification of Natural Ponds and Lakes
in the Glaciated Prairie Region
Plate 19
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| Plate 19. Central portion of a large semipermanent pond, moderately brackish, cover type 2 (IV-C-2), duringn severe drought conditions. Deep-marsh zone represented by drawdown bare-soil phase, interspersed with clumps of emergent vegetation composed of hardstem bulrush (Scirpus acutus). August 4, 1961, Stutsman County, N. Dak. |
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