Table 1 Presence of species recorded at the ten locations of the study area and assignment of species to their respective functional group (acc. Steneck and Dethier 1994)

Acrosorium ciliolatum

+

+

+

+

+

Corticated foliose

Ahnfeltia plicata

+

+

Corticated

Ahnfeltiopsis devoniensis

+

+

+

+

+

+

+

+

+

Corticated

Apoglossum ruscifolium

+

Corticated foliose

Boergeseniella fruticulosa

+

+

+

+

+

+

Corticated filamentous

Calliblepharis jubata

+

+

+

Corticated

Callithamnion granulatum

+

+

Filamentous

Callithamnion tetricum

+

+

+

+

+

Filamentous

Caulacanthus ustulatus

+

+

Corticated

Ceramium botryocarpum

+

+

+

+

+

+

+

+

+

+

Corticated filamentous

Ceramium ciliatum

+

+

Corticated filamentous

Ceramium diaphanum

+

+

+

+

Corticated filamentous

Ceramium echionotum

+

+

+

+

+

+

Corticated filamentous

Ceramium gaditanum

+

+

+

Corticated filamentous

Ceramium pallidum

+

+

+

+

+

+

+

Corticated filamentous

Champia parvula

+

Corticated

Chondracanthus acicularis

+

+

+

+

+

+

+

+

+

Corticated

Chondracanthus teedei

+

+

+

+

+

+

+

+

+

+

Corticated

Chondria coerulescens

+

+

+

+

+

Corticated filamentous

Chondrus crispus

+

+

+

+

+

Corticated

Corallina officinalis

+

+

+

+

+

+

+

+

+

+

Articulated calcareous

Erythroglossum laciniatum

+

Corticated foliose

Gastroclonium ovatum

+

+

+

+

Corticated

Gelidium spinosum

+

+

Corticated

Gelidium pulchellum

+

+

+

+

+

+

+

+

Corticated

Gelidium pusillum

+

+

Corticated

Gigartina pistillata

+

+

+

+

+

Corticated

Grateloupia dichotoma

+

Corticated

Grateloupia turuturu

+

+

+

Corticated foliose

Gymnogongrus crenulatus

+

+

+

+

+

+

+

Corticated

Gymnogongrus griffithsiae

+

Corticated

Halurus equisetifolius

+

+

+

Corticated filamentous

Heterosiphonia plumosa

+

Corticated filamentous

Hypoglossum hypoglossoides

+

+

+

+

Corticated foliose

Laurencia obtusa

+

+

+

Corticated

Lomentaria articulata

+

+

+

+

+

+

+

+

+

Corticated

Lomentaria clavellosa

+

Corticated

Mastocarpus stellatus

+

+

+

+

+

+

Corticated

Osmundea pinnatifida

+

+

+

+

+

+

+

+

+

+

Corticated

Plocamium cartilagineum

+

+

+

+

+

+

Corticated

Porphyra spp.

+

+

+

+

+

+

+

+

Foliose

Pterocladiella capillacea

+

+

Corticated

Pterosihonia ardreana

+

+

+

+

+

+

+

+

+

+

Corticated filamentous

Pterosiphonia complanata

+

+

+

+

+

+

+

+

Corticated filamentous

Ptilothamnion sphaericum

+

Corticated filamentous

Polysiphonia atlantica

+

Corticated filamentous

Polysiphonia brodiei

+

+

+

+

+

+

Corticated filamentous

Polysiphonia denudata

+

+

+

+

+

+

+

+

Corticated filamentous

Polysiphonia fucoides

+

+

+

+

+

+

+

+

+

+

Corticated filamentous

Polysiphonia nigra

+

Corticated filamentous

Rhodothamniella floridula

+

Filamentous

Rhodymenia holmesii

+

Corticated foliose

Rhodymenia pseudopalmata

+

Corticated foliose

Scinaia furcellata

+

+

+

Corticated

Bifurcaria bifurcata

+

+

+

+

Leathery macrophytes

Cladostephus spongiosus

+

+

+

Corticated

Dictyota dichotoma

+

+

+

+

+

+

+

+

+

+

Corticated foliose

Dictyopteris menbranacea

+

+

Corticated foliose

Ectocarpus siliculosus

+

Filamentous

Fucus serratus

+

Leathery macrophytes

Fucus spiralis

+

+

Leathery macrophytes

Himanthalia elongata

+

Leathery macrophytes

Saccorhiza polyschides

+

+

+

+

Leathery macrophytes

Sargassum muticum

+

+

+

Leathery macrophytes

Petalonia fascia

+

Corticated foliose

Spongonema tomentosum

+

Filamentous

Stypocaulon scoparium

+

+

+

+

+

+

Corticated

Acrosiphonia arcta

+

Filamentous

Cladophora hutchinsiae

+

+

+

+

+

+

+

Filamentous

Codium tomentosum

+

+

+

+

+

+

+

+

+

Corticated

Ulva clathrata

+

+

+

Foliose

Ulva compressa

+

+

+

+

+

Foliose

Ulva spp.

+

+

+

+

+

+

+

+

+

+

Foliose

Ulvaria obscura

+

+

+

+

+

+

+

+

+

+

Foliose