Table S1. List of the taxa identified from the colonization experiments (CHEMECOLI) deployed in the Gulf of Cadiz. Classification according to the World Register of Marine Species (www.marinespecies.org accessed May 2013). The taxa in blue were found only in the external parts of the CHEMECOLI. The occurrence of new records (in bold) and background fauna in the substrata enclosed by the 2mm mesh net is shown for each subregion (El Arraiche, Carbonate Province) and substrate type (wood, alfalfa, carbonate). Each taxon was assigned to one of 20 different trophic groups. Family Species name/code Habit Mode Food type TG EA CP W A C WA C Unassigned Porifera unassigned Ep/S/R Om/Su pom 16 - - - - - U Unassigned Tubiclavoididae Eudendriidae Campanulariidae Tiarannidae Hydrozoa unassigned Tubiclavoides striatum Moura, Cunha & Schuchert, 2007 Eudendrium sp. Clytia sp. Clytia linearis (Thorneley, 1900) Campanulinidae unassigned Campanulina panícula G.O. Sars, 1874 Halecium cf. tenellum Hincks, 1861 Cryptolaria pectinata (Allman, 1888) Filellum serratum (Clarke, 1879) Zygophylax biarmata Billard, 1905 Modeeria rotunda (Quoy & Gaimard,1827) Ep/S/A Ep/S/A Ep/S/A Ep/S/A Ep/S/A Ep/S/A Ep/S/A Ep/S/A Ep/S/A Ep/S/A Ep/S/A Ep/S/A Ca/Su Ca/Su Ca/Su Ca/Su Ca/Su Ca/Su Ca/Su Ca/Su Ca/Su Ca/Su Ca/Su Ca/Su zoo zoo zoo zoo zoo zoo zoo zoo zoo zoo zoo zoo 5 5 5 5 5 5 5 5 5 5 5 5 U R R R L - U R L R L L - U R R - U - - U L R R - Unassigned Actiniaria unassigned Ep/S/A Ca/Su zoo 5 - - - U - Nausithoidae Nausithoe sp. Ep/S/A U Unassigned Nemertea unassigned Ss/M/F Ca/Pr mac 6 U - U - Unassigned Sipuncula unassigned Sr/D/F Om/Dt pom;mic;mac 12 U - - Feeding Major taxa PORIFERA Unassigned CNIDARIA Hydrozoa Unassigned Anthoathecata Leptothecata Campanulinidae Halecidae Lafoeidae Anthozoa Actiniaria - Scyphozoa Coronata U NEMERTEA Unassigned - - SIPUNCULA Unassigned U - U ANNELIDA Oligochaeta Unassigned Unassigned Oligochaeta unassigned Ss/M/F Om/Dt Protodrilidae Amphinomidae Protodrilus sp. Linopherus cf. hemuli (Fauchald, 1972) Pareurythoe cf. borealis (M.Sars,1862) Ophryotrocha sp01 Ophryotrocha sp02 Ophryotrocha sp03 Ophryotrocha sp04 Ophryotrocha sp05 Ophryotrocha sp06 Ophryotrocha sp07 Ophryotrocha sp08 Protodorvillea kefersteini (McIntosh, 1869) Lumbrineridae unassigned Lumbrineriopsis paradoxa (Saint-Joseph,1888) Chrysopetalidae unassigned Glyceridae unassigned Glycera tesselata Grübe, 1840 Hesionidae unassigned cf. Amphiduros sp. Leocrates atlanticus (McIntosh, 1885) Nereimyra sp.(juveniles) Nereimyra punctata (Muller, 1788) Eunereis longíssima Johnston, 1840 Nicon sínica Wu & Sun, 1979 Phyllodoce madeirensis Langerhans, 1880 Harmothoe evei Kirkegaard, 1980 Subadyte pellucida (Ehlers, 1864) Pholoides dorsipapillatus (Marenzeller, 1893) Sthenelais cf. boa (Johnston,1833) Eusyllinae unassigned Exogoninae unassigned Sr/M/F Ss/M/F Ss/M/F Sr/M/F Sr/M/F Sr/M/F Sr/M/F Sr/M/F Sr/M/F Sr/M/F Sr/M/F Ss/M/F Ss/M/F Ss/M/F Sr/M/F Ss/M/F Ss/M/F Ss/M/F Sr/M/F Ss/M/F Ss/M/F Ss/M/F Ss/D/T Sr/D/T Sr/M/F Sr/M/F Ss/M/F Ss/M/F Ss/M/F Ss/M/F Sr/M/F Mc/Gr Ca/Pr Ca/Pr Om/Sc;Gr Om/Sc;Gr Om/Sc;Gr Om/Sc;Gr Om/Sc;Gr Om/Sc;Gr Om/Sc;Gr Om/Sc;Gr Ca/Pr Ca/Pr Ca/Pr Ca/Pr Ca/Pr Ca/Pr Ca/Pr Ca/Pr;Sc Ca/Pr Ca/Pr Ca/Pr Om/De Om/Dt;Pr Ca/Pr;Sc Ca/Pr Ca/Pr Ca/Pr Ca/Pr Ca/Pr Mc/Gr pom;mic 1 mic mac mac pom;mic;mei pom;mic;mei pom;mic;mei pom;mic;mei pom;mic;mei pom;mic;mei pom;mic;mei pom;mic;mei mei mei;mac mei;mac mei;mac mac mac mac mac mac mac mac sed;pom;mic pom;mic;mei mac mac mac mac mac mei mic 11 6 6 2 2 2 2 2 2 2 2 8 8 8 9 6 6 6 4 6 6 6 13 2 4 7 6 6 6 8 10 Polychaeta Incerate sedis Aciculata Dorvilleidae Lumbrineridae Chrysopetalidae Glyceridae Hesionidae Nereididae Phyllodocidae Polynoidae Sigalionidae Syllidae R N N N N N U U N L N L R R L U U N N N R L - N R L - N N R N N N N N L U N L N R R U U N N N N N U N N L N R U L - Canalipalpata Sabellidae Sabellidae Siboglinidae Spionidae Acrocirridae Ampharetidae Ctenodrilidae Terebellidae Scolecida Capitellidae Maldanidae Orbiniidae Paraonidae Sabellidae unassigned Serpulidae unassigned Siboglinum sp. Polydora sp. Prionospio sp01 Prionospio sp02 Prionospio cf. aluta Maciolek, 1985 Prionospio steenstrupi Malmgren,1867 Macrochaeta sp. Amage sp. Melinnopsis sp. Raricirrus beryli Petersen & George, 1991 Terebellidae unassigned cf. Amphitrite sp. Neoamphitrite affinis (Malmgren,1866) Nicolea cf. venustula (Montagu, 1818) Polycirrus norvegicus Wollebaek, 1912 Capitellidae sp01 Capitellidae sp02 Capitellidae sp03 Capitellidae sp04 Capitellidae sp05 Maldanidae unassigned Euclymene cf. oerstedi (Claparède, 1863) Orbiniidae unasssigned Leitoscoloplos cf. mammosus Mackie, 1987 Aricidea suecica meridionalis Laubier & Ramos,1974 Levinsenia gracilis (Tauber, 1879) Paradoneis lyra (Southern, 1914) Scalibregmatidae unassigned Ep/S/T Ep/S/T Ss/S/T Sr/D/T Sr/D/T Sr/D/T Sr/D/T Sr/D/T Sr/M/F Sr/D/T Sr/D/T Sr/M/F Sr/D/T Sr/D/T Sr/D/T Sr/D/T Sr/D/T Ss/D/F Ss/D/F Ss/D/F Ss/D/F Ss/D/F Ss/D/T Ss/D/T Ss/M/F Ss/M/F Sr/D/B Sr/D/B Sr/D/B Ss/M/B Om/Su Om/Su Ch Om/De;Su Om/De;Su Om/De;Su Om/De;Su Om/De;Su Om/De Om/De Om/De Mc/Gr Om/De Om/De Om/De Om/De Om/De Om/De Om/De Om/De Om/De Om/De Om/De Om/De Om/De Om/De Om/De Om/De Om/De Om/De Eulimidae unassigned Rissoidae unassigned cf. Alvania sp. Sr/M/X Sr/M/F Sr/M/F Ca/Sp Mc/Gr Mc/Gr pom pom sed;pom;mic sed;pom;mic sed;pom;mic sed;pom;mic sed;pom;mic sed;pom;mic sed;pom;mic sed;pom;mic mic sed;pom;mic sed;pom;mic sed;pom;mic sed;pom;mic sed;pom;mic sed;pom;mic sed;pom;mic sed;pom;mic sed;pom;mic sed;pom;mic sed;pom;mic sed;pom;mic sed;pom;mic sed;pom;mic sed;pom;mic sed;pom;mic sed;pom;mic sed;pom;mic 16 16 20 14 14 14 14 14 14 14 14 10 14 14 14 14 14 13 13 13 13 13 13 13 13 13 14 14 14 13 U L L L N U R L U U U U U L - mac mic mic 17 10 10 - U - - U L L U U - U U L U U L L - U L R R N U U - R R N U U - R N - - - R R - - - MOLLUSCA Gastropoda Caenogastropoda Eulimidae Rissoidae Cocculiniformia Heterobranchia Neomphalina Vetigastropoda Columbellidae Marginellidae Muricidae Cocculinidae Unassigned Cimidae Xylodisculidae Melanodrymiidae Pseudococculinidae Larocheidae Unassigned Calliotropidae Unassigned Skeneidae Alvania cimicoides (Forbes, 1844) Alvania cf. zylensis Gofas & Warén, 1982 cf. Obtusella sp. Pseudosetia spD Amphissa acutecostata (Philippi, 1844) Marginellidae spA Pagodula echinata (Kiener, 1840) Coccopigya sp. Nudibranchia unassigned Cima cuteculata Warén, 1993 Graphis gracilis (Monterosato, 1874) Xylodiscula sp. cf. Leptogyra sp. Copulabyssia sp Bathyxylophila sp. nov Moelleriopsis messanensis (Seguenza,1876) Putzeysia cf. wiseri (Clacara, 1842) Vetigastropoda (skeneimorph) Cirsonella romettensis (Granata-Grillo, 1877) cf. Lissospira sp. Sr/M/F Sr/M/F Sr/M/F Sr/M/F Sr/M/F Sr/M/F Sr/M/F Sr/M/F Sr/M/F Sr/M/F Sr/M/F Sr/M/F Sr/M/F Sr/M/F Sr/M/F Sr/M/F Sr/M/F Sr/M/F Sr/M/F Sr/M/F Mc/Gr Mc/Gr Mc/Gr Mc/Gr Ca/Pr Ca/Pr Ca/Pr Mc/Gr Ca/Pr Mc/Gr U Mc/Gr Mc/Gr Mc/Gr Mc/Gr Mc/Gr Mc/Gr U U U Bivalvia unassigned (juveniles) Cuspidaria sp. Xylophaga dorsalis (Turton, 1819) Xyloredo sp. Kelliella sp. (juveniles) Neilonella latior (Jeffreys, 1876) Yoldiella sp.(juveniles) Ennucula bushae (Dollfus, 1898) Solemyidae (juveniles) Idas modiolaeformis (Sturany, 1896) Delectopecten vitreus (Gmelin, 1791) Propeamussium sp. U Sr/D/F Sr/S/Z Sr/S/Z Ss/D/F Ss/D/F Ss/D/B Ss/M/F Ss/D/F Ep/D/A Ep/D/F Ep/D/F U Ca/Pr Om/Hs;Su Om/Hs;Su Om/De;Su Om/De Om/De Om/De Ch Om/Ch;Su Om/Su Om/Su mic mic mic mic mac mac mac mic mei;mac mic mic mic mic mic mic mic 10 10 10 10 7 7 7 11 7 11 U 11 10 11 11 10 10 U U U R N N N N - N L N N - - N N N N N - R N L N N N N R U L L - U 9 19 19 13 13 13 13 20 20 16 16 U N L R L N - L N - N L - U N N L N - N R L N - - Bivalvia Unassigned Heterodonta Protobranchia Pteriomorphia ARTHROPODA Maxillopoda Unassigned Cuspidariidae Pholadidae Kelliellidae Neilonellidae Yoldiidae Nuculidae Solemyidae Mytilidae Pectinidae Propeamussidae zoo;mei pom;ter pom;ter sed;pom;mic sed;mic sed;pom;mic sed;pom;mic pom pom pom Cirripedia Verrucidae Verruca sp. Ep/S/R Om/Su Unassigned Alpheidae Stenopodidae Leucosiidae Xanthidae Dendrobrachiata unassigned Alpheus sp. Richardina sp. Ebalia nux A. Milne-Edwards, 1883 Monodaeus couchii (Couch, 1851) Meganyctiphanes cf.norvegica (M. Sars, 1857) Nebalia spA Nebalia spB Amphipoda unassigned Aoridae unassigned Leptamphopus sp122 Leptamphopus sp123 Phtisica sp. nov.? Dulichiopsis nordlandica (Boeck, 1870) Eusirus longipes Boeck, 1861 Idunella sp. Liljeborgia cf. dellavalei Stebbing, 1906 Lysianassidae spD Ensayara cf. carpinei Bellan-Santini, 1974 Normanion ruffoi Diviacco & Vader, 1988 Orchomene grimaldii Chevreux, 1890 Tryphosella simillima Ruffo, 1985 Eriopisa elongata (Bruzelius, 1859) Melphidippella macra (Norman, 1869) Oedicerotidae unassigned Pardaliscidae unassigned Pardaliscoides sp. Photis longicaudata (Bate & Westwood, 1862) Harpinia sp. Primno macropa Guérin-Méneville, 1836 Pleustidae spA cf. Pleusymtes mediterraneus (Ledoyer, 1986) Seba aloe Karaman, 1971 Sr/M/F Sr/M/F Sr/M/F Sr/M/F Sr/M/F Ep/M/F Sr/M/F Sr/M/F U Sr/D/T Ep/M/F Ep/M/F Sr/M/F Sr/M/T Ep/M/F U U Sr/M/F Sr/M/F Sr/M/F Sr/M/F Sr/M/F Sr/M/F Ep/M/F Ss/M/F Ep/M/F Ep/M/F Sr/D/T Sr/M/B Ep/M/F Sr/M/F Sr/M/F Sr/M/F Om/Dt;Pr;Sc Om/Dt;Pr;Sc Om/Dt;Pr;Sc Om/Dt;Pr;Sc Om/Dt;Pr;Sc U Ca/Sc Ca/Sc U Om/Su Ca/Pr Ca/Pr Mc/Gr Mc/Gr Ca/Pr U U Ca/Sc Om/Dt;Pr;Sc Om/Dt;Pr;Sc Om/Dt;Pr;Sc Ca/Sc Om/Dt Om/Su Ca/Pr Ca/Pr Ca/Pr Om/Su Ca/Pr U Ca/Pr Ca/Pr Mc/Gr pom 16 - - - - - - pom;mic pom;mic;mei pom;mic,mei pom;mic;mei pom;mic;mei 2 2 2 2 2 U 4 4 U 15 5 5 10 10 5 U U 4 3 3 3 4 12 16 8 5 5 15 9 U 7 7 10 L L - L L L - L - - L - - L N N U - N L N N R L U - L - L N N L U - Malacostraca Decapoda Euphausiacea Nebaliacea Amphipoda Unassigned Aoridae Calliopidae Caprellidae Dulichiidae Eusiridae Liljeborgiidae Lysianassidae Melitidae Melphidippidae Oedicerotidae Pardaliscidae Photidae Phoxocephalidae Phrosinidae Pleustidae Sebidae mac mac pom;mic zoo zoo mic mic zoo mac mac mac mac mac pom pom;zoo mei zoo zoo pom;mic mei mac mac mic Cumacea Isopoda Stenothoidae Leuconidae Nannastacidae Desmossomatidae Gnathiidae Janiridae Munnidae Munnopsidae Mysida Tanaidacea Apseudidae Unassigned Leptocheliidae pom pom pom 7 10 16 1 1 1 18 12 12 12 12 12 U 12 12 12 L L R - L R - L L - R L L R R L R L L Om/Dt Om/Dt pom pom 12 12 - - - - - - Sr/D/T Om/Dt pom 12 - - - - - - Sr/D/T Om/Dt pom 12 - - - - - - Ophiurida unassigned (juv.) Crinoidea unassigned (juv.) Sr/D/F Sr/S/A Om/Su;De U pom;mic;zoo 15 U R - R R R R R - - - - U Bryozoa unassigned Ep/S/R Om/Su pom 16 - U - Stenothoe sp. Leucon sp. Nannastacidae unassigned Desmossomatidae unassigned Chelator sp. Prochelator sp. Gnathia sp. Austrofilius cf. mediterraneus Castello, 2002 Janira maculosa Leach, 1814 Munna sp. Disconectes sp. Ilyarachna sp. Mysida unassigned Apseudes setiferus Bacescu, 1981 Tanaidomorpha unassigned Mesotanais pinguiculus Blazewicz-Paszkowycz, Bamber Sr/M/F Sr/M/F Ep/M/F Ss/M/F Ss/M/F Ss/M/F Ep/M/X Sr/M/F Sr/M/F Sr/M/F Sr/M/F Sr/M/F U Sr/D/F Sr/D/T Sr/D/T Ca/Pr Mc/Gr Om/Su Om/Dt Om/Dt Om/Dt Ca/Sp Om/Dt Om/Dt Om/Dt Om/Dt Om/Dt U Om/Dt Om/Dt Om/Dt mac mic pom pom;mic pom;mic pom;mic fis pom;mic pom pom pom;mic pom;mic Sr/D/T Sr/D/T & Cunha, 2011 Leptognathiidae Pseudotanaidae Tanaellidae ECHINODERMATA Unassigned Ophiuroidea Unassigned Crinoidea BRYOZOA Unassigned Unassigned Leptognathia sp. Pseudotanais tympanobaculum BłażewiczPaszkowycz, Bamber & Cunha, 2011 Araphura macrobelone Błażewicz-Paszkowycz, Bamber & Cunha, 2011 Tanaella unguicillata Norman & Stebbing, 1886 - Feeding habit. Source of food: epibenthic (Ep); seafloor surface (Sr); subsurface (Ss). Motility: mobile (M); discretely motile, movement not necessary for feeding (D); sessile (S). Habit: free living or active burrower (F); tubiculous (T); sedentary, living in burrow (B); encrusting, requiring large area of attachment (R); attached, requiring one point of attachment (A); parasitic (X); unassigned (U). Feeding mode. Type of symbiosis: chemotophic (Ch); heterotrophic (Hs). Diet: carnivorous (Ca), omnivorous (Om), feeding on microbes (Mc). Mode: deposit feeder, ingest sediment (De); detritus feeder, ingests particulate matter (Dt); suspension, filter feeder , strains particles from the water (Su); grazer, feeds by scraping (Gr); predator, eats living animals (Pr); scavenger, eats carrion (Sc); suctorial parasite (Sp); symbiotic (Sym); unassigned (U). Food type and size. Sediment (sed), - - particulate organic matter (pom); wood and other terrestrial or coastal plant material (ter); single celled organisms (mic); meiofauna (mei); macrofauna (mac); zooplankton (zoo); fish (fis); unassigned (U). The trophic scheme is based on Macdonald et al. [1]. Trophic information was obtained from stable isotope data (mostly unpublished) and from the literature for each individual species wherever possible; if the feeding behaviour of a particular species was unknown, it was assumed to feed in a similar manner to congeneric or confamilial species, or species within the same major group. Trophic guilds. For simplification we established 20 different trophic guilds based on source of food, feeding mode and diet: 1. Omnivores on subsurface items; 2. Omnivores on surface small items; 3. Omnivores on surface large items; 4. Scavengers; 5. Predators on zooplankton; 6. Predators on subsurface macrofauna; 7. Predators on surface macrofauna; 8. Predators on subsurface meiofauna; 9. Predators on surface meiofauna; 10. Microbial grazers; 11. Microbial grazers, wood specialists; 12. Detritivores; 13. Subsurface deposit feeders; 14. Surface deposit feeders; 15. Suspension feeders on surface items; 16. Suspension feeders on epibenthic items; 17. Suctorial parasites on macrofauna; 18. Suctorial parasites on fish; 19. Heterotrophic symbiosis; 20. Chemotrophic symbiosis; U. unassigned. Sub-regions: El Arraiche, Mercator MV (EA); Carbonate Province, Meknès and Darwin MV (CP). Type of substrate: wood (W); alfalfa (A); carbonate (C). Occurrence: new occurrences (N); taxa previously recorded in the region (R); taxa previously recorded in the study site (L); unassigned taxa (U). Reference: 1. Macdonald TA, Burd BJ, Macdonald VI, van Roodselaar A (2010) Taxonomic and feeding guild classification for the marine benthic macroinvertebrates of the Strait of Georgia, British Columbia. Can Tech Rep Fish Aquat Sci 2874: iv + 63 p.