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
Picocyanobacteria in the Banda Sea during two diferent monsoons
Zevenboom, W. (1990). Picocyanobacteria in the Banda Sea during two diferent monsoons. Neth. J. Sea Res. 25(4): 513-521
In: Netherlands Journal of Sea Research. Netherlands Institute for Sea Research (NIOZ): Groningen; Den Burg. ISSN 0077-7579; e-ISSN 1873-1406, meer
|  |
| Abstract |
The relative abundance of red-pigmented picocyanobacteria, a recently recognized component of ocean primary productivity, was examined in the Banda Sea during August 1984 (cruise 1, southeast monsoon, upwelling) and February/ March 1985 (cruise 2, northwest monsoon, downwelling). These small-sized (< 1µm) species are rich in the red pigment phycoerythrin (PE) and belong to the Synechococcus-type species that was studied in continuous culture. The cell concentrations were assessed by using the characteristic PE-absorbance peak at 545 nm in the in vivo absorption spectra as tracer and epifluorescence microscopy. Picocyanobacteria were found in relatively high concentrations (104-105 cells·cm-3) at 75% and 96% of the Banda Sea stations of cruise 1 and 2, respectively. The cell-numbers were higher during the first cruise, but their relative importance (as part of the total phytoplankton-biomass) was higher during the second cruise. The species showed a preference for deeper layers where light intensities were low. Their low surface abundance seemed to show a diurnal pattern (i.e. decreasing during the course of the day), correlated with surface irradiance. The occurrence of such a diurnal pattern is discussed in relation with results of light shift experiments with continuous cultures of Synechococcus. |
IMIS is ontwikkeld en wordt gehost door het VLIZ.
