Table S8. Percentage of introduced, endemics and other macrophytobenthic species/infraspecific taxa by phylum and totals

Table S8. Percentage of introduced, endemics and other macrophytobenthic species/infraspecific taxa by phylum and totals

Table S9. Checklist of the phylum Heterokontophyta and comments to the checklist

This list is based in the check-list by Ribera et al. (1992), with some updates and modifications. Particular attention has been devoted to local checklists published after the revision by Ribera et al. (1992): Puglia (Southern Italy) (Cormaci et al. 2001), Tuscany (Northwestern Italy) (Rindi et al. 2002), Morocco (Benhissoune et al. 2002) and Italian coasts (Furnari et al. 2003). Lists of Mediterranean introduced species have also been considered (e.g. Boudouresque & Verlaque 2002; Zenetos et al. 2005, 2008; Verlaque et al. in press) as well as some specific papers (e.g. Cormaci et al. 1994; Ramon 2000; Ribera et al. 2005; Alongi et al. 2007; Taskin et al. 2010). Black Sea is not included.

1. Rull et al. (2007) reported Dictyota ciliolata Sonder ex Kützing from the Northwestern Mediterranean but recent molecular examination of the collected specimens suggests that it is another, still unidentified, species.

2. We follow Algaebase in not considering Ascocyclus orbicularis (J. Agardh) Kjellman as synonym of Myrionema magnusii (Sauvageau) Loiseaux.

3. We prefer to maintain the specific category of Cystoseira balearica Sauvageau awaiting molecular evidences for its inclusion within Cystoseira brachycarpa J. Agardh.

4. We prefer to maintain the specific category of Cystoseira caespitosa Sauvageau awaiting molecular evidences indicating its identity with Cystoseira balearica Sauvageau.

5. Awaiting molecular evidences, we consider Cystoseira compressa (Esper) Gerloff & Nizamuddin var. pustulata Ercegovic (=Cystoseira epiphytica Schiffner ex Gerloff & Nizamuddin) to be a different taxa from Cystoseira humilis Kützing var. humilis.

6. This species is considered here to be a Mediterranean endemics. In our opinion, records from the Indian Ocean (Silva et al. 1996) need reexamination.

7. See Verlaque et al. (1999) for the differences between this species and Cystoseira jabukae Ercegovic.

8. Synonymy between Cystoseira mauritanica Sauvageau and Cystoseira gibraltarica (Sauvageau) Dangeard needs reexamination.

9. Includes Cystoseira sauvageauana var. polyoedematis (Sauvageau) Hamel. C. sauvageauana is considered here as endemic. In our opinion, records from the Atlantic Ocean (Prud'homme van Reine et al. 2005) need reexamination.

10. This species is considered here to be a Mediterranean endemic. In our opinion, records from the Indian Ocean (Silva et al. 1996) need reexamination.
Taxa inquirenda (see also Ribera et al. 1992)
Cystoseira mediterranea var. valiantei Sauvageau: see Verlaque et al. (1999).

Ectocarpus elegans Meneghini ex Ardissone: see Furnari et al. (2003).

Leathesia cervicornis Berthold: see Furnari et al. (2003).

Sphacelaria olivacea (Smith) C. Agardh: see Furnari et al. (2003).
Taxa excludenda (see also Ribera et al. 1992)
Cystoseira myrica (Gmelin) C. Agardh: see Zenetos et al. (2005).

Dictyota ciliolata Sonder ex Kützing: Molecular examination of specimens identified as Dictyota ciliolata in the Northwestern Mediterranean (Rull et al. 2007) suggest that they do not belong to this species (J. Rull, pers. comm.).

Sargassum latifolium (Turner) C. Agardh: unsupported records (Zenetos et al. 2008).

Sorocarpus sp.: Specimens tentatively identified as Sorocarpus sp. correspond to Botrytella parva (Takamatsu) Kim (Zenetos et al. 2008).

Spatoglossum asperum J. Agardh: see Zenetos et al. (2005)
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