Full-text resources of PSJD and other databases are now available in the new Library of Science.
Visit https://bibliotekanauki.pl
Preferences help
Polish version English version Language
enabled [disable] Abstract
Number of results

Results found: 1

Number of results on page
first rewind previous Page / 1 next fast forward last

Search results

help Sort By:

help Limit search:
first rewind previous Page / 1 next fast forward last
1

Short-term fluctuations of chlorophyll alpha fluorescence versus diurnal variations of solar radiation in the surface water of the Gdansk Basin

100%
Magulski R., Falkowska L., Dunajska D., Pryputniewicz D., Sikorowicz S.
|
2004
|
issue 3
57-68
EN
Measurements of chlorophyll alpha fluorescence accompanied by solar radiation measurements were carried out during two spring cruises in the region of the Gdansk Basin. Chlorophyll alpha fluorescence, similarly to that of chlorophyll alpha concentration in the seawater, showed considerable diurnal variability. The measurements provided statistically significant negative correlation coefficients that indicated that chlorophyll a fluorescence is inhibited as solar PAR and UV radiation intensity increases. The approximate range of radiation intensity that corresponded to a clearly marked decline in chlorophyll a fluorescence and chlorophyll alpha concentration was determined. It was revealed that the decline in chlorophyll alpha concentration in the surface water layer resulted from the photodegradation of chlorophyll alpha as well as phytoplankton grazing. In both cases, the resulting observation was an increase of pheophytine a concentration. The vertical migration of phytoplankton was identified as an additional process induced by high radiation levels.
first rewind previous Page / 1 next fast forward last
JavaScript is turned off in your web browser. Turn it on to take full advantage of this site, then refresh the page.