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
Alien macroalgae in Denmark - a broad-scale national perspective
Thomsen, M.S.; Wernberg, T.; Stææhr, P.; Krause-Jensen, D.; Risgaard-Petersen, N.; Silliman, B.R. (2007). Alien macroalgae in Denmark - a broad-scale national perspective. Mar. Biol. Res. 3(2): 61-72. https://dx.doi.org/10.1080/17451000701213413
In: Marine Biology Research. Taylor & Francis: Oslo; Basingstoke. ISSN 1745-1000; e-ISSN 1745-1019
|  |
| Trefwoorden |
|
| Author keywords |
Alien macroalgae, Large-scale monitoring |
| Auteurs | | Top |
- Thomsen, M.S.
- Wernberg, T.
- Stææhr, P.
|
- Krause-Jensen, D.
- Risgaard-Petersen, N.
- Silliman, B.R.
|
|
| Abstract |
Most studies documenting the importance of alien macroalgae relative to native species are based on smaller-scale sampling programmes. Between 1989 and 2003, a Danish monitoring programme collected data on the percentage cover of macroalgae at more than 600 locations throughout the country. We examined this data set to estimate the relative abundance of alien species in the algal flora on large spatiotemporal scales, i.e. across depth ranges, regions and years. Of the 10 alien macroalgal species known to inhabit Danish coastal waters, nine were found in the survey. Most of the alien species were only present in low quantities (<1% of the entire flora). In contrast, the two most common alien species, Sargassum muticum and Bonnemaisonia hamifera, constituted 2-7% of the assemblages, depending on depth, region and year. Sargassum muticum was abundant from 0 to 5 m in the northwestern region, where salinity and species richness are highest, whereas B. hamifera was abundant in several regions in deeper waters, where the native flora is species-poor. Based on their relatively high abundance, we hypothesize that these two aliens have had the largest impact on the native communities. Of some concern is the recent introduction of Gracilaria vermiculophylla. This species has traits that match the conditions of Danish estuaries and may become widespread with potential negative impacts on native biota. |
IMIS is ontwikkeld en wordt gehost door het VLIZ.
