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Het OWA, het open archief van het Waterbouwkundig Laboratorium heeft tot doel alle vrij toegankelijke onderzoeksresultaten van dit instituut in digitale vorm aan te bieden. Op die manier wil het de zichtbaarheid, verspreiding en gebruik van deze onderzoeksresultaten, alsook de wetenschappelijke communicatie maximaal bevorderen.

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Local versus global diversity of microorganisms: cryptic diversity of ciliated protozoa Fenchel, T.; Esteban, G.; Finlay, B.J. (1997). Local versus global diversity of microorganisms: cryptic diversity of ciliated protozoa. Oikos (Kbh.) 80(2): 220-225 In: Oikos (København). Munksgaard: Copenhagen. ISSN 0030-1299; e-ISSN 1600-0706, meer

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Beschikbaar in	Auteurs
VLIZ: Non-open access 282591 [ aanvragen ]

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Trefwoorden

Composition > Community composition Geography > Biogeography Sediments Species diversity Protozoa [WoRMS] Marien/Kust; Zoet water

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Auteurs		Top
Fenchel, T., meer Esteban, G. Finlay, B.J.

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Abstract

Microbial species diversity, both global and local, is still poorly understood. In this study all species of ciliated protozoa were recorded microscopically from similar to 1 cm2 sediment collected from a small lake and from a marine shallow-water bay. Additional adjacent sediment samples (together representing <50 cm2)) were then incubated under a variety of culture conditions to reveal "cryptic species" that are present as resting cysts or are too rare to be found microscopically. About 85 and 57% of the total number of observed species from the limnic and marine sediment, respectively, were such cryptic species. In both cases the number of species found in <50 cm2 of sediment represented about 75% of all ciliate species ever recorded from these two previously well-studied habitats, and about 8% of all named free-living ciliates. These observations support the assumption that in the case of microorganisms "everything is everywhere" and that their global species diversity is relatively limited.

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