FN Archimer Export Format PT J TI Non-indigenous seaweeds in the Northeast Atlantic Ocean, the Mediterranean Sea and Macaronesia: a critical synthesis of diversity, spatial and temporal patterns BT AF van der Loos, Luna M. Bafort, Quinten Bosch, Samuel Ballesteros, Enric Bárbara, Ignacio Berecibar, Estibaliz Blanfuné, Aurélie Bogaert, Kenny Bouckenooghe, Silke Boudouresque, Charles-François Brodie, Juliet Cecere, Ester Díaz-Tapia, Pilar Engelen, Aschwin H. Gunnarson, Karl Shabaka, Soha Hamdy Hoffman, Razy Husa, Vivian Israel, Álvaro Karremans, Mart Knoop, Jessica Le Gall, Line Maggs, Christine A. Mineur, Frederic Parente, Manuela Perk, Frank Petrocelli, Antonella Rodríguez-Prieto, Conxi Ruitton, Sandrine Sansón, Marta Serrão, Ester A. Sfriso, Adriano Sjøtun, Kjersti Stiger-Pouvreau, Valerie Surget, Gwladys Taşkin, Ergün Thibaut, Thierry Tsiamis, Konstantinos Van De Weghe, Lotte Verlaque, Marc Viard, Frédérique Vranken, Sofie Leliaert, Frederik De Clerck, Olivier AS 1:1;2:1;3:1;4:2;5:3;6:4;7:5;8:1;9:1;10:5;11:6;12:7;13:3,8;14:4;15:9;16:10;17:11;18:12;19:13;20:14;21:1;22:15;23:16;24:1,5,16;25:17;26:14;27:7;28:18;29:5;30:19;31:4;32:20;33:21;34:22;35:22;36:23;37:5;38:24;39:1;40:5;41:25;42:1;43:26;44:1; FF 1:;2:;3:;4:;5:;6:;7:;8:;9:;10:;11:;12:;13:;14:;15:;16:;17:;18:;19:;20:;21:;22:;23:;24:;25:;26:;27:;28:;29:;30:;31:;32:;33:;34:;35:;36:;37:;38:;39:;40:;41:;42:;43:;44:; C1 Phycology Research Group and Center for Molecular Phylogenetics and Evolution, Ghent University, Ghent 9000, Belgium Marine Ecology, Centre d’Estudis Avançats de Blanes-CSIC, Blanes/ Girona 17300, Spain Coastal Biology Research Group, Faculty of Sciences and Centre for Advanced Scientific Research (CICA), University of A Coruña, A Coruña 15071, Spain CCMAR-Centre of Marine Sciences, CIMAR, University of Algarve, Faro 8005-139, Portugal CNRS, IRD, Mediterranean Institute of Oceanography (MIO), Aix Marseille University and Université de Toulon, Marseille UM 110, France Natural History Museum, Research, Cromwell Road, London SW7 5BD, UK Institute of Water Research (IRSA) - C.N.R., via Roma 3, Taranto 74123, Italy Centro Oceanográfico de A Coruña (IEO, CSIC), Paseo Marítimo Alcalde Francisco Vázquez 10, A Coruña 15001, Spain Marine and Freshwater Research Institute, Fornubúðir 5, 230 Hafnarfjörður, Iceland Marine Environment Division, National Institute of Oceanography and Fisheries (NIOF), Cairo 11516, Egypt The Steinhardt Museum of Natural History, Israel National Center for Biodiversity Studies, Tel Aviv University, Tel Aviv 69978, Israel Institute of Marine Research, Nordnesgaten 50, Bergen 5005, Norway National Institute of Oceanography, Israel Oceanographic & Limnological Research, Ltd., 8030, 31080 Haifa, Israel ANEMOON Foundation, 2129 AA, Bennebroek, the Netherlands Institut de Systématique, Évolution, Biodiversité (ISYEB), Muséum national d’Histoire naturelle, CNRS, Sorbonne Université, EPHE, Université des Antilles, Paris 75005, France School of Biological Sciences, Queen’s University Belfast, Belfast BT9 5DL, Northern Ireland InBIO Associate Laboratory, CIBIO, Research Center in Biodiversity and Genetic Resources, University of the Azores, Ponta Delgada 9501-801, Portugal Facultat de Ciències, Universitat de Girona, Ma Aurèlia Capmany 69, Girona 17003, Spain Departamento de Botánica, Ecología y Fisiología Vegetal, Universidad de La Laguna, Canary Islands 38200, Spain Department of Environmental Sciences, Informatics & Statistics, University Ca’ Foscari, Mestre (Venice) 30172, Italy Department of Biological Sciences, University of Bergen, Bergen 5006, Norway University of Brest, CNRS, IRD, Ifremer, LEMAR, Plouzane F-29280, France Department of Biology, Faculty of Arts and Sciences, Manisa Celal Bayar University, Muradiye, Manisa 45140, Türkiye Vroutou 12, Athens 11141, Greece ISEM, University of Montpellier, CNRS, IRD, Montpellier 34090, France Meise Botanic Garden, Meise 1860, Belgium C2 UNIV GHENT, BELGIUM CSIC, SPAIN UNIV CORUNA, SPAIN UNIV ALGARVE, PORTUGAL CNRS, FRANCE NHM, UK CNR IRSA, ITALY IEO CSIC, SPAIN MFRI, ICELAND NIOF, EGYPT STEINHARDT NHM, ISRAEL IMR (BERGEN), NORWAY IOLR, ISRAEL ANEMOON FND, NETHERLANDS MNHN, FRANCE UNIV QUEENS BELFAST, UK UNIV AZORES, PORTUGAL UNIV GIRONA, SPAIN UNIV LA LAGUNA, SPAIN UNIV VENICE, ITALY UNIV BERGEN, NORWAY UBO, FRANCE UNIV MANISA CELAL BAYAR, TÜRKIYE Vroutou 12, Athens 11141, Greece UNIV MONTPELLIER, FRANCE MEISE BOTANIC GARDEN, BELGIUM SI BREST SE PDG-RBE-PHYTNESS UM LEMAR IF 2.4 TC 0 UR https://archimer.ifremer.fr/doc/00865/97652/107351.pdf LA English DT Article DE ;Biodiversity;Chlorophyta;Europe;invasive alien species;non-indigenous species;Phaeophyceae;Rhodophyta AB Effective monitoring of non-indigenous seaweeds and combatting their effects relies on a solid confirmation of the non-indigenous status of the respective species. We critically analysed the status of presumed non-indigenous seaweed species reported from the Mediterranean Sea, the Northeast Atlantic Ocean and Macaronesia, resulting in a list of 140 species whose non-indigenous nature is undisputed. For an additional 87 species it is unclear if they are native or non-indigenous (cryptogenic species) or their identity requires confirmation (data deficient species). We discuss the factors underlying both taxonomic and biogeographic uncertainties and outline recommendations to reduce uncertainty about the non-indigenous status of seaweeds. Our dataset consisted of over 19,000 distribution records, half of which can be attributed to only five species (Sargassum muticum, Bonnemaisonia hamifera, Asparagopsis armata, Caulerpa cylindracea and Colpomenia peregrina), while 56 species (40%) are recorded no more than once or twice. In addition, our analyses revealed considerable variation in the diversity of non-indigenous species between the geographic regions. The Eastern Mediterranean Sea is home to the largest fraction of non-indigenous seaweed species, the majority of which have a Red Sea or Indo-Pacific origin and have entered the Mediterranean Sea mostly via the Suez Canal. Non-indigenous seaweeds with native ranges situated in the Northwest Pacific make up a large fraction of the total in the Western Mediterranean Sea, Lusitania and Northern Europe, followed by non-indigenous species with a presumed Australasian origin. Uncertainty remains, however, regarding the native range of a substantial fraction of non-indigenous seaweeds in the study area. In so far as analyses of first detections can serve as a proxy for the introduction rate of non-indigenous seaweeds, these do not reveal a decrease in the introduction rate, indicating that the current measures and policies are insufficient to battle the introduction and spread of non-indigenous species in the study area. HIGHLIGHTS Non-indigenous seaweed species in the Northeast Atlantic Ocean, the Mediterranean Sea and Macaronesia are critically reanalysed. > 19,000 distribution records revealed considerable variation in diversity of non-indigenous seaweed species in the study area. Taxonomic and biogeographic uncertainties hamper a critical evaluation of the non-indigenous status of many seaweed species. PY 2023 PD NOV SO European Journal of Phycology SN 0967-0262 PU Informa UK Limited VL 59 IS 2 BP 127 EP 156 DI 10.1080/09670262.2023.2256828 ID 97652 ER EF