SciELO - Scientific Electronic Library Online

vol.35 número5The influence of land use on water quality and diatom community structures in urban and agriculturally stressed riversConveyance estimation in channels with emergent bank vegetation índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Servicios Personalizados



Links relacionados

  • En proceso de indezaciónCitado por Google
  • En proceso de indezaciónSimilares en Google


Water SA

versión On-line ISSN 1816-7950
versión impresa ISSN 0378-4738


FALASCO, Elisa et al. Morphological abnormalities of diatom silica walls in relation to heavy metal contamination and artificial growth conditions. Water SA [online]. 2009, vol.35, n.5, pp.595-606. ISSN 1816-7950.

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.

Palabras clave : aquatic ecosystem health; diatoms; teratological forms.

        · texto en Inglés     · Inglés ( pdf )