Invasion
Invasion Description
1st Record: Galicia/Spain/Ría de Arousa (1991, Barbara and Cremades 2004; Barbara et al.. 2005)
Geographic Extent
Galicia/Spain/ría de Arousa (1991, Barbara and Cremades 2004; Barbara et al.. 2005); ría de Betanzos (1992, Barbara and Cremades 2004); Galicia/Spain/ría de Pontevedra (1995, Barbara and Cremades 2004); Galicia/Spain/ría de Vigo (1996, Barbara and Cremades 2004); Galicia/Spain/ría de Ortigueira (1997, Barbara and Cremades 2004); Galicia/Spain/ría de Corcubión(1998, Barbara and Cremades 2004); Galicia/Spain/ría de La Coruña (1999, Barbara and Cremades 2004); Spain/Atlantic Ocean (Peña et al. 2014, marl beds); northern Portugal/Atlantic Ocean (1997, Araújo et al. 2003, cited by Barbara et al. 2005; Chainho et al. 2015); port of Viana do Castelo to Port of Figueira do Foz/Portugal/Atlantic Ocean (2007, Araujo et al. 2011); Foz do Douro/Portugal/Atlantic Ocean (Mulas and Bertocci 2015, 41 10 5.7400 N, 08 41 25.3000 W, and 411001.4300 N),
Vectors
| Level | Vector |
|---|---|
| Probable | Oyster Accidental |
| Alternate | Hull Fouling |
| Alternate | Ballast Water |
Regional Impacts
| Ecological Impact | Competition | |
| In experiments at Foz do Douro, Portugal, G. turuturu was most abundant in pools where native canopy-forming seaweeds were continuously removed, compared to controls. In pools where G. turuturu was continuously removed, overall community composition did not differ from controls, suggesting that G. turuturu is a 'passenger' of disturbance, rather than a driver of community change (Mulas and Bertocci 2016). However, individual species responded in idiosyncratic ways, varying with habitat (tidepools vs. exposed rock) and shore level. Among species showng these differens were: Chondrus crispus; articulated coralline algae, Corallina spp.; the crustose sporophyte of the red alga Mastocarpus stellatus, and the mussel, Mytilus galloprovincialis (Freitas et al. 2016). Nutrient fertilization of tidepools promoted the establishment and functional impacts (increased productivity and respiration) by Grateloupia turuturu and Sargassum muticum (Vieira et al. 2017). | ||