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'.
| one publication added to basket [135680] |
Canopy characteristics of the brown alga Sargassum muticum (Fucales, Phaeophyta) in Lake Grevelingen, Southwest Netherlands
Critchley, A.T.; de Visscher, P.R.M.; Nienhuis, P.H. (1990). Canopy characteristics of the brown alga Sargassum muticum (Fucales, Phaeophyta) in Lake Grevelingen, Southwest Netherlands. Hydrobiologia 204-205: 211-217. https://dx.doi.org/10.1007/BF00040236
In: Hydrobiologia. Springer: The Hague. ISSN 0018-8158; e-ISSN 1573-5117, meer
|  |
| Trefwoorden |
Engineering > Coastal engineering
Marien/Kust |
| Auteurs | | Top |
- Critchley, A.T.
- de Visscher, P.R.M.
- Nienhuis, P.H., meer
|
|
|
| Abstract |
The present distribution of the invasive brown alga Sargassum muticum in the southwest Netherlands is updated. Populations of the alga were found to remain at their 1985 level in Lake Grevelingen, with a small eastward expansion into the Eastern Scheldt estuary. A new population for the brackish, non-tidal Lake Veere is reported. Within Lake Grevelingen S. muticum forms a persistent, extensive canopy of 100% cover (4,442.5 ± 525.6 g fresh wt m-2, 640.3 ± 75.8 g dry wt m-2) that has a marked effect upon the penetration of photosynthetically active radiation (PAR) (reduced by 97% at 0.1 m). Surface sea water temperatures can be elevated by 2.7 °C above water not associated with a Sargassum canopy; furthermore, the dense canopy shades and hence reduces water temperatures below 0.1 m depth. Productivity studies indicate that assimilation occurs in the upper levels of the canopy (57.09 µg C mg dry wt-1 m-2 at a mean PAR rate of 106.7 J cm-2 h-1). Self-shading and a resultant decrease in the rate of assimilation was evident below the canopy. |
IMIS is ontwikkeld en wordt gehost door het VLIZ.
