Non-indigenous seaweeds in the Northeast Atlantic Ocean, the Mediterranean Sea and Macaronesia: a critical synthesis of diversity, spatial and temporal patterns
| Type | Article | ||||||||||||||||
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| Acceptance Date | 2023-11-28 IN PRESS | ||||||||||||||||
| Language | English | ||||||||||||||||
| Author(s) | Van Der Loos Luna M. 1, Bafort Quinten1, Bosch Samuel1, Ballesteros Enric2, Bárbara Ignacio3, Berecibar Estibaliz4, Blanfuné Aurélie5, Bogaert Kenny1, Bouckenooghe Silke1, Boudouresque Charles-François5, Brodie Juliet6, Cecere Ester7, Díaz-Tapia Pilar3, 8, Engelen Aschwin H.4, Gunnarson Karl9, Shabaka Soha Hamdy10, Hoffman Razy11, Husa Vivian12, Israel Álvaro13, Karremans Mart14, Knoop Jessica1, Le Gall Line15, Maggs Christine A.16, Mineur Frederic1, 5, 16, Parente Manuela17, Perk Frank14, Petrocelli Antonella7, Rodríguez-Prieto Conxi18, Ruitton Sandrine5, Sansón Marta19, Serrão Ester A.4, Sfriso Adriano20, Sjøtun Kjersti21, Stiger-Pouvreau Valerie22, Surget Gwladys22, Taşkin Ergün23, Thibaut Thierry5, Tsiamis Konstantinos24, Van De Weghe Lotte1, Verlaque Marc5, Viard Frédérique25, Vranken Sofie1, Leliaert Frederik26, de Clerck Olivier1 |
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| Affiliation(s) | 1 : Phycology Research Group and Center for Molecular Phylogenetics and Evolution, Ghent University, Ghent 9000, Belgium 2 : Marine Ecology, Centre d’Estudis Avançats de Blanes-CSIC, Blanes/ Girona 17300, Spain 3 : Coastal Biology Research Group, Faculty of Sciences and Centre for Advanced Scientific Research (CICA), University of A Coruña, A Coruña 15071, Spain 4 : CCMAR-Centre of Marine Sciences, CIMAR, University of Algarve, Faro 8005-139, Portugal 5 : CNRS, IRD, Mediterranean Institute of Oceanography (MIO), Aix Marseille University and Université de Toulon, Marseille UM 110, France 6 : Natural History Museum, Research, Cromwell Road, London SW7 5BD, UK 7 : Institute of Water Research (IRSA) - C.N.R., via Roma 3, Taranto 74123, Italy 8 : Centro Oceanográfico de A Coruña (IEO, CSIC), Paseo Marítimo Alcalde Francisco Vázquez 10, A Coruña 15001, Spain 9 : Marine and Freshwater Research Institute, Fornubúðir 5, 230 Hafnarfjörður, Iceland 10 : Marine Environment Division, National Institute of Oceanography and Fisheries (NIOF), Cairo 11516, Egypt 11 : The Steinhardt Museum of Natural History, Israel National Center for Biodiversity Studies, Tel Aviv University, Tel Aviv 69978, Israel 12 : Institute of Marine Research, Nordnesgaten 50, Bergen 5005, Norway 13 : National Institute of Oceanography, Israel Oceanographic & Limnological Research, Ltd., 8030, 31080 Haifa, Israel 14 : ANEMOON Foundation, 2129 AA, Bennebroek, the Netherlands 15 : Institut de Systématique, Évolution, Biodiversité (ISYEB), Muséum national d’Histoire naturelle, CNRS, Sorbonne Université, EPHE, Université des Antilles, Paris 75005, France 16 : School of Biological Sciences, Queen’s University Belfast, Belfast BT9 5DL, Northern Ireland 17 : InBIO Associate Laboratory, CIBIO, Research Center in Biodiversity and Genetic Resources, University of the Azores, Ponta Delgada 9501-801, Portugal 18 : Facultat de Ciències, Universitat de Girona, Ma Aurèlia Capmany 69, Girona 17003, Spain 19 : Departamento de Botánica, Ecología y Fisiología Vegetal, Universidad de La Laguna, Canary Islands 38200, Spain 20 : Department of Environmental Sciences, Informatics & Statistics, University Ca’ Foscari, Mestre (Venice) 30172, Italy 21 : Department of Biological Sciences, University of Bergen, Bergen 5006, Norway 22 : University of Brest, CNRS, IRD, Ifremer, LEMAR, Plouzane F-29280, France 23 : Department of Biology, Faculty of Arts and Sciences, Manisa Celal Bayar University, Muradiye, Manisa 45140, Türkiye 24 : Vroutou 12, Athens 11141, Greece 25 : ISEM, University of Montpellier, CNRS, IRD, Montpellier 34090, France 26 : Meise Botanic Garden, Meise 1860, Belgium |
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| Source | European Journal of Phycology (0967-0262) (Informa UK Limited) In Press | ||||||||||||||||
| DOI | 10.1080/09670262.2023.2256828 | ||||||||||||||||
| Keyword(s) | Biodiversity, Chlorophyta, Europe, invasive alien species, non-indigenous species, Phaeophyceae, Rhodophyta | ||||||||||||||||
| Abstract | 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. |
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