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Title

Detection of community-wide impacts of bottom trawl fishing on deep-sea assemblages using environmental DNA metabarcoding

AuthorsGood, Edward; Holman, Luke E.; Pusceddu, Antonio; Russo, Tommaso; Rius, Marc CSIC ORCID; Lo Iacono, Claudio CSIC ORCID
Keywords18S
Cytochrome c oxidase
Trawling
Taxonomy
Fisheries
Meiofauna
Issue Date2022
PublisherElsevier
CitationMarine Pollution Bulletin 183 : 114062 (2022)
AbstractAlthough considerable research progress on the effects of anthropogenic disturbance in the deep sea has been made in recent years, our understanding of these impacts at community level remains limited. Here, we studied deep-sea assemblages of Sicily (Mediterranean Sea) subject to different intensities of benthic trawling using environmental DNA (eDNA) metabarcoding and taxonomic identification of meiofauna communities. Firstly, eDNA metabarcoding data did not detect trawling impacts using alpha diversity whereas meiofauna data detected a significant effect of trawling. Secondly, both eDNA and meiofauna data detected significantly different communities across distinct levels of trawling intensity when we examined beta diversity. Taxonomic assignment of the eDNA data revealed that Bryozoa was present only at untrawled sites, highlighting their vulnerability to trawling. Our results provide evidence for community-wide impacts of trawling, with different trawling intensities leading to distinct deep-sea communities. Finally, we highlight the need for further studies to unravel understudied deep-sea biodiversity.
DescriptionEste artículo contiene 14 páginas, 7 figuras, 3 tablas.
Publisher version (URL)https://doi.org/10.1016/j.marpolbul.2022.114062
URIhttp://hdl.handle.net/10261/279165
DOI10.1016/j.marpolbul.2022.114062
ISSN0025-326X
E-ISSN1879-3363
Appears in Collections:(CEAB) Artículos
(ICM) Artículos




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