Zoeken
Zoeken kan via de modus 'eenvoudig zoeken' (één veld) of uitgebreid via 'geavanceerd zoeken' (meerdere velden). Zo kan je bv. zoeken op een combinatie van een auteursnaam (auteur), een jaartal (jaar) en een documenttype.
Boekenmand
Nuttige resultaten kan je aanvinken en toevoegen aan een mandje. De inhoud hiervan kan je exporteren of afdrukken (naar bv. PDF).
RSS
Op de hoogte blijven van nieuw toegevoegde publicaties binnen uw interessegebied? Dit kan door een RSS-feed (?) te maken van jouw zoekopdracht.
nieuwe zoekopdracht
Abundance and salt tolerance of obligately aerobic, phototrophic bacteria in a marine microbial mat
Yurkov, V.V.; van Gemerden, H. (1993). Abundance and salt tolerance of obligately aerobic, phototrophic bacteria in a marine microbial mat. Neth. J. Sea Res. 31(1): 57-62
In: Netherlands Journal of Sea Research. Netherlands Institute for Sea Research (NIOZ): Groningen; Den Burg. ISSN 0077-7579; e-ISSN 1873-1406, meer
|  |
| Auteurs | | Top |
- Yurkov, V.V.
- van Gemerden, H.
|
|
|
| Abstract |
Data have been collected on the abundance of obligately aerobic,bacteriochlorophyll-a-containing bacteria in a marine microbial mat on the West Frisian Island of Texel, the Netherlands. Plate counts on media rich in organic matter revealed average numbers of 3*105·cm-3 sediment in the top 10 mm of the mat; the number of purple non-sulphur bacteria was of the same magnitude. Due to the relatively small dimensions of obligately aerobic anoxygenic phototrophic bacteria and purple non-sulphur bacteria, compared to those of purple sulphur bacteria, the contributions of either of the two former groups to the biomass of Bchl-a-containing organisms was approximately 3%. The Specific Bchl-a-content of the isolated obligately aerobic phototrophs was very low (0.8 to 1.0 µg·mg-1 protein) compared to that of purple non-sulphur bacteria (16 to 20 µg·mg-1 protein), and purple sulphur bacteria (27 to 30 µg·mg-1). As a consequence, the relative contribution to the total Bchl a concentration of the two former groups (0.1% and 2.1%, respectively) was negligible, compared to that of the purple sulphur bacteria (97.8%). Salinities <50 had little effect on growth rate and yield of isolates; at salinities between 50 and 100 the doubling time increased progressively with a concomitant decrease in yield; no growth occurred at salinities >140. |
IMIS is ontwikkeld en wordt gehost door het VLIZ.
