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Concern about the spread of the invader seaweed Caulerpa taxifolia var. distichophylla (Chlorophyta: Caulerpales) towards the West Mediterranean

Musco, Luigi; Andaloro, Franco; Mikac, Barbara; Mirto, S.; Vega Fernandez, T.; Badalamenti, Fabio (2014) Concern about the spread of the invader seaweed Caulerpa taxifolia var. distichophylla (Chlorophyta: Caulerpales) towards the West Mediterranean. Mediterranean Marine Science, 15 (3). pp. 532-538. ISSN 1108-393X

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Abstract

The new Australian alien seaweed Caulerpa taxifolia var. distichophylla, after being established along the Turkish Mediterranean coast in 2006, was recorded in Southern Sicily in 2007. Since then local fishermen claimed support to counteract the effects of entanglement of large amounts of the alien strain wrack in their trammel nets, causing the gear to become ineffective. The further northward and westward spread of the new alien strain is supposed to be limited by winter temperature. We present novel data confirming that the new alien strain is fully naturalized in Central Mediterranean and is expanding its range beyond such limit (i.e. the 15°C February isotherm), thus becoming potentially able to colonize the western basin. By means of a preliminary estimation of effects on native polychaete assemblages, and considering some peculiarities of Sicily (mostly linked to its geographical position in the Mediterranean Sea), the risk linked to the increasing range of distribution of the invasive algae is highlighted.

Item Type: Article
Uncontrolled Keywords: Mediterranean sea; alien species; benthic assemblages; invasive; posidonia oceanica; polychaetes
Subjects: NATURAL SCIENCES > Interdisciplinary Natural Sciences > Marine Science
NATURAL SCIENCES > Interdisciplinary Natural Sciences > Environmental Science
Divisions: Center for Marine Research
Depositing User: Barbara Mikac
Date Deposited: 14 Jul 2016 12:14
Last Modified: 14 Jul 2016 12:14
URI: http://fulir.irb.hr/id/eprint/2962
DOI: 10.12681/mms.742

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