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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)

Nitzschia amphibia amphibia

Krammer K. & Lange-Bertalot H. (1997): "Susswaserflora von Mitteleuropa", Vol.2, pg.108, Fig.78:14-16; Guide methodologique pour la mise en oeuvre de I'Indice biologique diatomees"(2000), Pl.73;
Nitzschia amphibia var. acutiuscula Grun. in Cl. & Grun. 1880
Ecological Preference:
Valve shape is variable (elliptical, lanceolate, linear-lanceolate, linear) with variable ends; keel raphe has 7-9 fibulae in 10µm; striae appear more-or-less punctate; length is 6-50µm (up to 120µm in the tropics), breadth is 4-6µm; striae count is 13-18 in 10µm
  • Southeast Florida Coastal Mangroves
  • Florida Bay Paleo Project
  • Dosing Project
  • Transect Project

  • Sample localities:
  • Water Conservation Areas (WCAs)