The Caulerpa racemosa invasion: A critical review

Klein, Judith; Verlaque, Marc

doi:10.1016/j.marpolbul.2007.09.043

Cited by 242 publications

(243 citation statements)

References 65 publications

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“…Similarly, a few very invasive macroalgae can dominate algal assemblages creating homogenized microhabitats, greatly impacting native communities. This is the case of the invasive green alga Caulerpa cylindracea, which can easily overgrow and eliminate other macroalgal or invertebrate species and may form compact multilayered mats up to 15 cm thick that trap sediment and may create an anoxic layer underneath (Klein and Verlaque, 2008;Katsanevakis et al, in press). Several biotopes, such as Mediterranean communities of sublittoral algae and coralligenous communities, are affected by C. cylindracea, which smothers indigenous populations, outcompetes native communities, and diminishes the structural complexity and species richness.…”

Section: Frontiers In Marine Science | Marine Ecosystem Ecologymentioning

confidence: 99%

Invading the Mediterranean Sea: biodiversity patterns shaped by human activities

et al. 2014

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Section: Frontiers In Marine Science | Marine Ecosystem Ecologymentioning

confidence: 99%

Invading the Mediterranean Sea: biodiversity patterns shaped by human activities

et al. 2014

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“…Caulerpa cylindracea seems to show a westward directionality of expansion in the Mediterranean, since the first report of the species in Libya in 1990 (Nizamuddin, 1991;Klein & Verlaque, 2008;Rivera-Ingraham & al., 2010). For this fast expansion potential and the vast impact on local biota (e.g.…”

Section: Introductionmentioning

confidence: 98%

“…(Nizamuddin, 1991;Klein &Verlaque, 2008, Rivera-Ingraham & al., 2010, genetically related to populations of southwestern Australia (Verlaque & al., 2003). Formerly this taxon was identified as C. racemosa var.…”

Section: Introductionmentioning

confidence: 99%

First record of Caulerpa cylindracea (Caulerpaceae, Chlorophyta) in Andalusia (Southern Spain)

Altamirano

Andreakis

Souza-Egipsy

et al. 2014

Anal. Jard. Bot. Madr.

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Three different species of Caulerpa (Caulerpaceae, Chlorophyta) cooccur in the Mediterranean Sea: two of them are found at the centraleastern basin and are typically considered non aggressive components of the Lessepsian flora [(C. chemnitzia (Esper) J.V. Lamouroux and C. racemosa var. lamourouxii (Turner) Weber-van Bosse f. requienii (Montagne) Weber van Bosse)]; a third taxon, C. cylindracea Sonder has aggressively expanded its range since its first observation in 1990, and it is nowadays reported from nearly all the Mediterranean countries. We report a population of C. cylindracea from Almería (Andalusia, Southern Iberian Peninsula) at −30 m depth as to be the westernmost record of the invasive variety on the Mediterranean European coast. Therefore, we made use of morphological description and molecular phylogenetics to provide a complete identification of this invasive seaweed in Southern Spain. Our findings are discussed in light of the composition of the receptor communities, such as maërl bed, edges of Posidonia oceanica (Linnaeus) Delile, and their ecology. Our results confirmed the suggested directionality of the invasive pathway to be westward to the Strait of Gibraltar, mainly supported by sea currents and vectors of anthropogenic origin.

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“…Our study focuses particularly on the invading Caulerpa racemosa, which has already been reported in 12 Mediterranean countries: Italy, Greece, Albania, Cyprus, France, Turkey, Malta, Spain, Tunisia, Croatia, Algeria and Libya (Klein and Verlaque, 2008). Caulerpa racemosa spreads in sheltered and exposed areas, colonising all kinds of substrates from 0 to 70 m depth (Argyrou et al, 1999;Piazzi and Cinelli, 1999;Zuljevic et al, 2003).…”

Section: Introductionmentioning

confidence: 91%

Changes in seagrass polychaete assemblages after invasion by Caulerpa racemosa var. cylindracea (Chlorophyta: Caulerpales): community structure, trophic guilds and taxonomic distinctness

2010

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SUMMARY: A two-year study focusing on the associated polychaete assemblages revealed that the degradation of the Posidonia oceanica seagrass meadows, together with the colonisation of rhizomes by invasive Caulerpa racemosa in the Balearic Islands, have produced important changes in the ecosystem functioning, and have therefore affected the benthic faunal communities. The highest abundance and number of species occurred in C. racemosa from August to December. The species composition of the polychaete assemblage in C. racemosa is similar to that of P. oceanica but abundances of shared species differ between Caulerpa and Posidonia. Abundance, number of species and diversity were positively correlated with C. racemosa biomass. The spatial complexity provided by the network of C. racemosa fronds and stolons seemed to combine with that of the remaining seagrass mat to support a well developed polychaete assemblage. Although invaded meadows harboured significantly modified polychaete assemblages when compared with living P. oceanica meadows, the main impacts seem to be non-harmful (i.e. increased abundance and number of species) and mainly affect their seasonal patterns, which is a direct consequence of the corresponding biomass seasonality of C. racemosa.Keywords: Posidonia oceanica, Caulerpa racemosa, Polychaeta, species diversity, trophic guilds, taxonomic distinctness, introduced species, Mediterranean. RESUMEN: Cambios en la comunidad de poliquetos asociados a la invasión de Caulerpa raCemosa var. CylindraCea (Chlorophyta: Caulerpales): estructura de comunidad, estrategias tróficas y distinción taxonómica. -En las Islas Baleares, la degradación de las praderas de Posidonia oceanica junto con la colonización de los restos de rizoma por Caulerpa racemosa conllevan importantes cambios en el funcionamiento del ecosistema, los cuales afectan especialmente a las comunidades de invertebrados. El presente estudio muestra que, a lo largo de dos años, las mayores abundancias y diversidades de poliquetos en rizomas invadidos por C. racemosa se han encontrado en agosto y septiembre. La composición específica en dichos rizomas invadidos es muy similar a la propia de las praderas de P. oceanica, si bien algunas de especies coincidentes difieren claramente en abundancia. La biomasa de C. racemosa muestra una correlación positiva con la abundancia, número de especies y diversidad de poliquetos. La complejidad espacial asociada a los frondes y estolones de C. racemosa se combinan con los restos de rizoma, generando un hábitat capaz de mantener una comunidad de poliquetos bien estructurada. Sin embargo, a pesar de las diferencias encontradas entre las respectivas comunidades de poliquetos, el impacto de la invasión parece no ser negativo (e.g. aumentan la abundancia de algunas especies y la diversidad específica) y afecta principalmente a su pauta estacional, siendo consecuencia directa de la estacionalidad del ciclo vegetativo de C. racemosa.

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The Caulerpa racemosa invasion: A critical review

Cited by 242 publications

References 65 publications

Invading the Mediterranean Sea: biodiversity patterns shaped by human activities

Invading the Mediterranean Sea: biodiversity patterns shaped by human activities

First record of <em>Caulerpa cylindracea</em> (Caulerpaceae, Chlorophyta) in Andalusia (Southern Spain)

Changes in seagrass polychaete assemblages after invasion by <i>Caulerpa racemosa</i> var. <i>cylindracea</i> (Chlorophyta: Caulerpales): community structure, trophic guilds and taxonomic distinctness

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