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Greater functional similarity in mobile compared to sessile assemblages colonizing artificial coastal habitats

Abstract : Among anthropogenic habitats built in the marine environment, floating and non-floating structures can be colonized by distinct assemblages. However, there is little knowledge whether these differences are also reflected in the functional structure. This study compared the functional diversity of sessile and mobile invertebrate assemblages that settle over three months on floating vs. non-floating artificial habitats, in two Chilean ports. Using morphological, trophic, behavioral, and life history traits, we found differences between mobile and sessile assemblages regarding the effect of the type of habitat on the functional diversity. Compared to sessile assemblages, a greater functional similarity was observed for mobile assemblages, which suggests that their dispersal capacity enables them to balance the reduced connectivity between settlement structures. No traits, prevailing or selected in one or the other habitat type, was however clearly identified; a result warranting for further studies focusing on more advanced stages of community development.
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https://hal.archives-ouvertes.fr/hal-03321975
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Submitted on : Wednesday, August 18, 2021 - 4:29:45 PM
Last modification on : Friday, October 22, 2021 - 2:58:33 PM

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Naily Nashira Figueroa, Antonio Brante, Frédérique Viard, Jean-Charles Leclerc. Greater functional similarity in mobile compared to sessile assemblages colonizing artificial coastal habitats. Marine Pollution Bulletin, Elsevier, 2021, 172, pp.112844. ⟨10.1016/j.marpolbul.2021.112844⟩. ⟨hal-03321975⟩

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