nieuwe zoekopdracht
[ meld een fout in dit record ]mandje (1): toevoegen | toon Print deze pagina

one publication added to basket [12829]
Biomassa en produktie van macro-algen
Goedheer, P.F. (1977). Biomassa en produktie van macro-algen. Interne verslagen Nederlands Instituut voor Onderzoek der Zee, 1977(11). NIOZ: Texel. 52 pp.
Deel van: Interne verslagen Nederlands Instituut voor Onderzoek der Zee. Nederlands Insituut voor Onderzoek der Zee. , meer

Beschikbaar in  Auteur 

Trefwoord
    Marien/Kust

Auteur  Top 
  • Goedheer, P.F.

Abstract
    Although data for primary production of phytoplankton and microphytobenthos in the Dutch Wadden Sea are available, macro- phytobenthos data are still lacking. Therefore field-observations of biomass and primary production were started in 1976 on different tidal stations near Texel. Biomass was estimated by sampling at regular intervals near fixed stations and by a "line-transect" method. Average biomass value for 37 stations in the Mokbaai during the top of the growing season was 11.2 g dry weight/m². Maximum observed values were 2.5 g, 23.3 g and 55.0 g dry weight/m² for respectively tube-dwelling diatoms, Enteromorpha and Ulva. Primary production was measured with the 14C method, it varied from 8.4-75.7 mgC/g dry weight/day. Biomass/m² and primary production/dry weight.day were used to calculate primary production/m² for the different days. Annual primary production of macroalgae amounts to 5-26 gC/m².year i.e. considerable lower than values observed both for phytoplankton and microphytobenthos in the Dutch Wadden Sea (about 100 gC/m².year). Transport of macroalgae from where they start growing plays an important role in the Wadden Sea. Some idea of its importance could be gained from the estimation of a "potential biomass" of macroalgae, using biomass at the beginning of the growing season and the measured primary production/dry weight during the season. This "potential biomass" was 1-100 times higher than the observed biomass. This indicates the importance of factors decreasing biomass of which transport will be the most important.

Alle informatie in het Integrated Marine Information System (IMIS) valt onder het VLIZ Privacy beleid Top | Auteur 
IMIS is ontwikkeld en wordt gehost door het VLIZ, voor meer informatie contacteer .