First insights into the meiofauna community of a maerl bed in the Bay of Brest (Brittany)

Primeros conocimientos sobre la comunidad meiofáunica del lecho de maerl en la bahía de Brest (Bretaña)

Type Article
Date 2022-03
Language English, Spanish
Author(s) Rebecchi FedericaORCID1, 2, 3, 4, Zeppilli DanielaORCID1, Baldrighi ElisaORCID1, 4, Di Cosmo AnnaORCID2, Polese GianlucaORCID2, Pisaniello AlessandroORCID1, 2, 3, 4, 5, Grall JacquesORCID3
Affiliation(s) 1 : Laboratoire Environnement Profond, Institut Français de Recherche pour l’Exploitation de la Mer (IFREMER), Centre Brest, REM/EEP/LEP, ZI de la Pointe du Diable, CS10070, 29280, Plouzané, France
2 : Departement of Biology, University of Naples Federico II, MSA campus, Via Cinthia, 80126 Naples, Italy
3 : Laboratoire des Sciences de l’Environnement Marin (UMS 3113), Institut Universitaire Européen de la Mer/Université de Bretagne Occidentale, Technopôle Brest-Iroise, rue Dumont D’Urville, 29280 Plouzané, France.
4 : Institute for Biological Resources and Marine Biotechnologies (IRBIM), Italian National Research Council (CNR), Largo Fiera della Pesca 2, 60125 Ancona, Italy
5 : School of Biological Sciences, University of Auckland, Private Bag 92019, Auckland, New Zealand.
Source Scientia Marina (0214-8358) (Editorial CSIC), 2022-03 , Vol. 86 , N. 1 , P. e024 (17p.)
DOI 10.3989/scimar.05230.024
WOS© Times Cited 1
Keyword(s) rhodolith beds, Bay of Brest, meiobenthos, Nematoda, biodiversity, taxonomy
Abstract

Maerl beds, particularly those of Brittany, are important, structurally complex biogenic coastal habitats that form a unique ecosystem with high benthic biodiversity. Although they are relatively well studied throughout Europe, several faunal groups of maerl beds, such as those belonging to the meiofauna, have received little attention. We investigated the meiofaunal abundance, distribution and community structure, with a focus on nematode biomass and diversity, in a maerl area in the Bay of Brest, Brittany, compared with that on a sandy beach (Anse de Dinan, Brittany). Meiofauna was five times more abundant on the maerl bed than on the sandy beach, and 1.5 times more diversified (12 vs. 8 taxa, respectively). Nematode diversity was more than three times higher on the maerl bed than on the sandy beach and showed a distinctive nematode community that was absent from the sandy beach. Maerl beds create more heterogeneous microhabitats and promote a higher diversification of meiofauna and nematode communities than sandy beaches.

Abstract <p>Los lechos de maerl y, en particular, los de Breta&ntilde;a, son un importante h&aacute;bitat costero biog&eacute;nico y estructuralmente complejo, que forma un ecosistema &uacute;nico con una alta biodiversidad bent&oacute;nica. A pesar de que varios grupos faun&iacute;sticos son relativamente bien estudiados en toda Europa, aquellos pertenecientes a la meiofauna han recibido poca atenci&oacute;n. Hemos investigado la abundancia, distribuci&oacute;n y estructura de la comunidad de la meiofauna, con especial atenci&oacute;n a la biomasa y diversidad de nematodos de un &aacute;rea de maerl en la bah&iacute;a de Brest (Breta&ntilde;a), en comparaci&oacute;n con la de una playa de arena (Anse de Dinan, Breta&ntilde;a). La meiofauna del maerl fue cinco veces m&aacute;s abundante que la de la playa arenosa, y 1,5 veces m&aacute;s diversificada (12 taxones frente a 8 respectivamente). La diversidad de nematodos del maerl fue m&aacute;s de tres veces mayor que la de la playa arenosa y mostr&oacute; un &uacute;nico nematodo que, a su vez, result&oacute; ausente en la playa arenosa. Los lechos de maerl crean microh&aacute;bitats m&aacute;s heterog&eacute;neos y promueven una mayor diversificaci&oacute;n de la meiofauna y las comunidades de nematodos que los h&aacute;bitats de playas arenosas.</p>
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How to cite 

Rebecchi Federica, Zeppilli Daniela, Baldrighi Elisa, Di Cosmo Anna, Polese Gianluca, Pisaniello Alessandro, Grall Jacques (2022). First insights into the meiofauna community of a maerl bed in the Bay of Brest (Brittany) / Primeros conocimientos sobre la comunidad meiofáunica del lecho de maerl en la bahía de Brest (Bretaña). Scientia Marina, 86(1), e024 (17p.). Publisher's official version : https://doi.org/10.3989/scimar.05230.024 , Open Access version : https://archimer.ifremer.fr/doc/00765/87656/