This paper describes the distribution and patterns of spread of the red alga Lophocladia lallemandii in the Tuscan Archipelago (NW Mediterranean Sea). Lophocladia lallemandii is recorded from three islands of the archipelago. Invasive traits were only detected at Pianosa Island where the affected stretch of coast has increased from 1.2 km in 2008 to 10.7 km in 2010. The abundance of the alga was found to increase with depth and strong differences among habitats were found in shallow stands. The presence of populations of Cystoseira spp. seemed to facilitate the spread of the alga. In Cystoseira assemblages, the biomass of L. lallemandii could represent up to 44 % of the biomass of Cystoseira spp. and epiphytes. The ability of L. lallemandii to colonize canopy species exposes habitats ecologically important to be invaded, and contradicts the classic concept of ecosystem resistance to biological invasions.
You have requested a machine translation of selected content from our databases. This functionality is provided solely for your convenience and is in no way intended to replace human translation. Neither BioOne nor the owners and publishers of the content make, and they explicitly disclaim, any express or implied representations or warranties of any kind, including, without limitation, representations and warranties as to the functionality of the translation feature or the accuracy or completeness of the translations.
Translations are not retained in our system. Your use of this feature and the translations is subject to all use restrictions contained in the Terms and Conditions of Use of the BioOne website.
Vol. 32 • No. 4