Mediterranean and Atlantic Algae, a Fraternal Relationship?

Gall, Line Le; Gey, Delphine; Rousseau, Florence

doi:10.1002/9781119476870.ch8

Cited by 3 publications

(1 citation statement)

References 26 publications

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“…A final category of uncertainty in natural vs. human-mediated dispersal mechanisms concerns those non-indigenous species which have been displaced within the study area. The biogeographic history of the Mediterranean Sea biota is closely intertwined with the Northeast Atlantic Ocean to which it is connected by the narrow Strait of Gibraltar (Bianchi & Morri, 2003;Patarnello et al, 2007;Le Gall et al, 2021), which results in a subset of species being shared between both regions. However, several Northeast Atlantic Ocean species have been recently introduced into the Mediterranean Sea, often in lagoons with extensive aquaculture facilities, e.g.…”

Section: Discerning Natural From Human-mediated Dispersalmentioning

confidence: 99%

Non-indigenous seaweeds in the Northeast Atlantic Ocean, the Mediterranean Sea and Macaronesia: a critical synthesis of diversity, spatial and temporal patterns

van der Loos,

Bafort,

Bosch

et al. 2023

European Journal of Phycology

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Section: Discerning Natural From Human-mediated Dispersalmentioning

confidence: 99%

Non-indigenous seaweeds in the Northeast Atlantic Ocean, the Mediterranean Sea and Macaronesia: a critical synthesis of diversity, spatial and temporal patterns

van der Loos,

Bafort,

Bosch

et al. 2023

European Journal of Phycology

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DNA barcoding reveals cryptic diversity, taxonomic conflicts and novel biogeographical insights inCystoseiras.l. (Phaeophyceae)

Neiva

Bermejo

Medrano

et al. 2022

European Journal of Phycology

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Non-indigenous seaweeds in the Northeast Atlantic Ocean, the Mediterranean Sea and Macaronesia: a critical synthesis of diversity, spatial and temporal patterns

van der Loos,

Bafort,

Bosch

et al. 2023

Preprint

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Effective monitoring and combatting the effect of non-indigenous seaweeds relies on a solid confirmation of the non-indigenous status of the 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.

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Mediterranean and Atlantic Algae, a Fraternal Relationship?

Cited by 3 publications

References 26 publications

Non-indigenous seaweeds in the Northeast Atlantic Ocean, the Mediterranean Sea and Macaronesia: a critical synthesis of diversity, spatial and temporal patterns

Non-indigenous seaweeds in the Northeast Atlantic Ocean, the Mediterranean Sea and Macaronesia: a critical synthesis of diversity, spatial and temporal patterns

DNA barcoding reveals cryptic diversity, taxonomic conflicts and novel biogeographical insights inCystoseiras.l. (Phaeophyceae)

Non-indigenous seaweeds in the Northeast Atlantic Ocean, the Mediterranean Sea and Macaronesia: a critical synthesis of diversity, spatial and temporal patterns

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