Biological Invasion: The Thau Lagoon, a Japanese Biological Island in the Mediterranean Sea

Boudouresque, Charles–François; Klein, Judith; Ruitton, Sandrine; Verlaque, Marc

doi:10.1007/978-90-481-8630-3_27

Cited by 37 publications

(46 citation statements)

References 8 publications

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“…Biodiversity patterns are substantially modified, and locally the induced change in species composition, abundance and richness can be even more marked. For example, in the Thau Lagoon (Figure 4) at least 58 introduced macrophytes have been identified, representing 32% of the species diversity and 48-99% of the macrophyte biomass on hard substrates (Boudouresque et al, 2011). In several hotspot areas, alien species now constitute a substantial part of the communities and have in many cases caused a shift to novel habitats, with an entirely modified ecosystem functioning (Katsanevakis et al, in press).…”

Section: Discussionmentioning

confidence: 99%

“…In derogation of the random sampling approach, we included the Venice and the Thau lagoons, as these sites have been well-studied and highlighted in the literature as hotspots of alien species (Occhipinti Ambrogi, 2000;Boudouresque et al, 2011). For each site (considered to be a 10 × 10 km quadrat), the list of recorded alien species was retrieved from EASIN (presence/absence data).…”

Section: Methodsmentioning

confidence: 99%

“…This species alone can have much greater impact than dozens of other non-invasive alien macrophytes, which again is not evident in an alien species richness indicator. The ecosystems of many regions of the Mediterranean Sea have been substantially modified (Boudouresque et al, 2011;Sala et al, 2011;Edelist et al, 2013). Especially Lessepsian migration is considered as the most significant biogeographic change currently underway worldwide (Bianchi et al, 2012).…”

Section: Frontiers In Marine Science | Marine Ecosystem Ecologymentioning

confidence: 99%

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Invading the Mediterranean Sea: biodiversity patterns shaped by human activities

et al. 2014

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Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Frontiers In Marine Science | Marine Ecosystem Ecologymentioning

confidence: 99%

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Invading the Mediterranean Sea: biodiversity patterns shaped by human activities

et al. 2014

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“…It is worth noting the dominance of macrophytes among NIS in the ADRIA and the WMED, where they reach 26-30% of all aliens, whereas in the EMED they hardly add up to 10% of the introductions. This pattern is related to the introduction of macrophytes in coastal lagoons (Boudouresque et al, 2011). Many macroalgae have expanded considerably their distribution range within the whole Mediterranean Sea.…”

Section: B Distribution Of Aliens Across the Mediterraneanmentioning

confidence: 98%

“…Their pattern of introduction is different in the four MSFD subregions. Among NIS, they dominate the benthic ecosystems in the WMED reaching more than 58 species in the French lagoon of Thau (a Japanese biological enclave in the Mediterranean Sea), which represent 32% of the species diversity and 48-99% of the macrophyte biomass on hard substrates (Boudouresque et al, 2011). The situation in the ADRIA is similar: the increasing naval exchanges with extra-Mediterranean countries, for the import of fish products or aquaculture activities, introduce new species every year, mainly macroalgae (Sfriso & Curiel, 2007;Cecere et al, 2009).…”

Section: Trends In Introduction Ratesmentioning

confidence: 99%

Alien species in the Mediterranean Sea by 2012. A contribution to the application of European Union’s Marine Strategy Framework Directive (MSFD). Part 2. Introduction trends and pathways

et al. 2012

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More than 60 marine non-indigenous species (NIS) have been removed from previous lists and 84 species have been added, bringing the total to 986 alien species in the Mediterranean [775 in the eastern Mediterranean (EMED), 249 in the central Mediterranean (CMED), 190 in the Adriatic Sea (ADRIA) and 308 in the western Mediterranean (WMED)]. There were 48 new entries since 2011 which can be interpreted as approximately one new entry every two weeks. The number of alien species continues to increase, by 2-3 species per year for macrophytes, molluscs and polychaetes, 3-4 species per year for crustaceans, and 6 species per year for fish. The dominant group among alien species is molluscs (with 215 species), followed by crustaceans (159) and polychaetes (132). Macrophytes are the leading group of NIS in the ADRIA and the WMED, reaching 26-30% of all aliens, whereas in the EMED they barely constitute 10% of the introductions. In the EMED, molluscs are the most species-rich group, followed by crustaceans, fish and polychaetes. More than half (54%) of the marine alien species in the Mediterranean were probably introduced by corridors (mainly Suez). Shipping is blamed directly for the introduction of only 12 species, whereas it is assumed to be the most likely pathway of introduction (via ballasts or fouling) of another 300 species. For approximately 100 species shipping is a probable pathway along with the Suez Canal and/or aquaculture. Approximately 20 species have been introduced with certainty via aquaculture, while >50 species (mostly macroalgae), occurring in the vicinity of oyster farms, are assumed to be introduced accidentally as contaminants of imported species. A total of 18 species are assumed to have been introduced by the aquarium trade. Lessepsian species decline westwards, while the reverse pattern is evident for ship-mediated species and for those introduced with aquaculture. There is an increasing trend in new introductions via the Suez Canal and via shipping.

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Patterns of genetic diversity of the cryptogenic red alga Polysiphonia morrowii (Ceramiales, Rhodophyta) suggest multiple origins of the Atlantic populations

Geoffroy

Destombe

Kim

et al. 2016

Ecology and Evolution

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The red alga Polysiphonia morrowii, native to the North Pacific (Northeast Asia), has recently been reported worldwide. To determine the origin of the French and Argentine populations of this introduced species, we compared samples from these two areas with samples collected in Korea and at Hakodate, Japan, the type locality of the species. Combined analyses of chloroplastic (rbcL) and mitochondrial (cox1) DNA revealed that the French and Argentine populations are closely related and differ substantially from the Korean and Japanese populations. The genetic structure of P. morrowii populations from South Atlantic and North Atlantic, which showed high haplotype diversity compared with populations from the North Pacific, suggested the occurrence of multiple introduction events from areas outside of the so‐called native regions. Although similar, the French and Argentine populations are not genetically identical. Thus, the genetic structure of these two introduced areas may have been modified by cryptic and recurrent introduction events directly from Asia or from other introduced areas that act as introduction relays. In addition, the large number of private cytoplasmic types identified in the two introduced regions strongly suggests that local populations of P. morrowii existed before the recent detection of these invasions. Our results suggest that the most likely scenario is that the source population(s) of the French and Argentine populations was not located only in the North Pacific and/or that P. morrowii is a cryptogenic species.

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Biological Invasion: The Thau Lagoon, a Japanese Biological Island in the Mediterranean Sea

Cited by 37 publications

References 8 publications

Invading the Mediterranean Sea: biodiversity patterns shaped by human activities

Invading the Mediterranean Sea: biodiversity patterns shaped by human activities

Alien species in the Mediterranean Sea by 2012. A contribution to the application of European Union’s Marine Strategy Framework Directive (MSFD). Part 2. Introduction trends and pathways

Patterns of genetic diversity of the cryptogenic red alga Polysiphonia morrowii (Ceramiales, Rhodophyta) suggest multiple origins of the Atlantic populations

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