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Welcome to the Diatom Image Database! The Periphyton Group at Florida International University created and maintains the Diatom Image Database, which includes over 980 diatom taxa found in the greater Everglades region of south Florida. Please send questions or comments about the Diatom Image Database to Franco Tobias .

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Map of south Florida Loxahatchee (LOX) WCA 2A WCA 3A Biscayne Bay Shark River Slough (SRS) Taylor Slough (TS) Florida Bay Everglades National Park (ENP) Everglades National Park (ENP)

Rhopalodia pacifica

Witkowski et al. (2000):"Iconographia Diatomologica (Vol.VII). Diatom flora of marine coast I", pg.411, Pl.214:3,4
Rhopalodia gibberula var. protracta sensu Fricke in A. Schmidt Atlas
Ecological Preference:
Valve is strongly dorsi-ventral, lunate with convex dorsal margin and concave to almost straight, narrowed towards rostrate obtusely to acutely rounded apices; raphe keel is weakly developed and marginal, with very coarse fibulae on ventral margin (40-70 in 10µ); distinctly punctae transapical striae (18-27 punctae in 10µm); length is 14-78µm, breadth is 5-12µm; striae count is 15-18 in 10µm
  • Southeast Florida Coastal Mangroves
  • Florida Bay Paleo Project
  • Transect Project

  • Sample localities:
  • Water Conservation Area 2A (WCA 2A)