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Fast-spreading green beds of recently introduced Halimeda incrassata invade Mallorca island (NW Mediterranean Sea)
Alós, J.; Tomas, F.; Terrados, J.; Verbruggen, H.; Ballesteros, E. (2016). Fast-spreading green beds of recently introduced Halimeda incrassata invade Mallorca island (NW Mediterranean Sea). Mar. Ecol. Prog. Ser. 558: 153-158. http://dx.doi.org/10.3354/meps11869
In: Marine Ecology Progress Series. Inter-Research: Oldendorf/Luhe. ISSN 0171-8630; e-ISSN 1616-1599, meer
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| Trefwoorden |
Alien species
Fisheries
Sediments
Marien/Kust |
| Author keywords |
Mediterranean Sea; Tropicalization; tufA gene |
| Auteurs | | Top |
- Alós, J.
- Tomas, F.
- Terrados, J.
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- Verbruggen, H., meer
- Ballesteros, E.
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| Abstract |
Mediterranean marine biodiversity is undergoing a tropicalization process. We present the first record and spread dynamics of the tropical green seaweed Halimeda incrassata (Bryopsidales, Chlorophyta) from the Mediterranean Sea. Plants were observed at 2 sites off Mallorca island (NW Mediterranean), and species identification was confirmed molecularly. Since the first observation of this alien seaweed in 2011, it has spread rapidly in the shallow subtidal habitat of a marine protected area located in Palma Bay, which has a depth of up to ca. 20 m. By 2015, this species spread by a factor of 6.75 and extended to an area of 2.7 km2, covering a total of 41% of the monitored area. The dynamics of the invasion suggest rapid colonization and establishment and spreading of the species through shallow sedimentary and rocky habitats. H. incrassata has the potential to strongly alter the ecosystem services and functioning of shallow Mediterranean habitats. We encourage authorities to pay attention to the spread of this alien seaweed at larger scales and determine the positive and negative effects of the invasion in order to facilitate research-driven decision making. |
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