Over het archief
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.
Dit archief wordt uitgebouwd en beheerd volgens de principes van de Open Access Movement, en het daaruit ontstane Open Archives Initiative.
Basisinformatie over ‘Open Access to scholarly information'.
Mats of colourless sulphur bacteria. 2. structure, composition of biota and successional patterns
Bernard, C.; Fenchel, T. (1995). Mats of colourless sulphur bacteria. 2. structure, composition of biota and successional patterns. Mar. Ecol. Prog. Ser. 128: 171-179
In: Marine Ecology Progress Series. Inter-Research: Oldendorf/Luhe. ISSN 0171-8630; e-ISSN 1616-1599, meer
|   |
| Auteurs | | Top |
- Bernard, C.
- Fenchel, T., meer
|
|
|
| Abstract |
Mats of colourless sulphur bacteria from a relatively exposed shallow water sediment and from a deeper, more protected sediment were studied. In the exposed habitat, patches of white sulphur bacteria had a limited lifetime and displayed a characteristic succession in which small sulphur bacteria (Thiospira, Macromonas) dominated at first followed by Thiovulum, which was eventually displaced by Beggiatoa; during summer phototrophic organisms dominated. Thiovulum films were only ~0.2 mm thick and the projected area of the cells covered only 7 to 36% of the sediment surface while mats of filamentous bacteria were thicker and represented a higher biomass. In the protected locality the Beggiatoa mats were ~0.6 mm thick and represented a 10-fold higher biovolume than those from the exposed habitat. The projected area of the filaments covered 2 to 3x the surface area of the sediment and had a combined length of 10 to 70 m cm-2. The mats had a porosity of 90 to 95% and did not contain a mucous matrix. Phototrophs (mainly filamentous cyanobacteria and diatoms) were always present. Protozoan biota included more than 80 species and represented a high cell density (corresponding to 104-105 ciliates ml-1 in addition to flagellates and lobose amoebae). Many species depended on sulphur bacteria for food. The mats sometimes also harboured several representatives of meio- and macrofauna. |
IMIS is ontwikkeld en wordt gehost door het VLIZ.
