Morphological abnormalities of diatom silica walls in relation to heavy metal contamination and artificial growth conditions

Teratological forms of diatoms are non-adaptive phenotypic abnormalities caused by various environmental stresses. Heavy metal contamination and artificial growth conditions are the best known causes. In fact, the recording of abnormal cells in a diatom population or community can give both a temporal and quantitative indication of heavy metal contamination of water bodies. Moreover, long-term cultures generally present a high percentage of abnormal cells due to the scarcity of nutrients, presence of waste products and osmotic pressure. The aim of this paper is to classify and provide photographic documentation and descriptions of all known teratologies occurring in the most widespread freshwater diatom genera.

• Publication year

  2009

• Venue

  Water SA

• Publication date

  2009-10-01

• Fields of study

  Biology, Chemistry, Environmental Science

• Identifiers
  DOI 10.4314/WSA.V35I5.49185
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

• No claims are published for this paper.

• No concepts are published for this paper.

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