Detection of community-wide impacts of bottom trawl fishing on deep-sea assemblages using environmental DNA metabarcoding
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Detection of community-wide impacts of bottom trawl fishing on deep-sea assemblages using environmental DNA metabarcoding. / Good, Edward; Holman, Luke E.; Pusceddu, Antonio; Russo, Tommaso; Rius, Marc; Iacono, Claudio Lo.
In: Marine Pollution Bulletin, Vol. 183, 114062, 2022.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Detection of community-wide impacts of bottom trawl fishing on deep-sea assemblages using environmental DNA metabarcoding
AU - Good, Edward
AU - Holman, Luke E.
AU - Pusceddu, Antonio
AU - Russo, Tommaso
AU - Rius, Marc
AU - Iacono, Claudio Lo
N1 - Publisher Copyright: © 2022 The Authors
PY - 2022
Y1 - 2022
N2 - Although 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.
AB - Although 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.
KW - 18S
KW - Cytochrome c oxidase
KW - Fisheries
KW - Meiofauna
KW - Taxonomy
KW - Trawling
U2 - 10.1016/j.marpolbul.2022.114062
DO - 10.1016/j.marpolbul.2022.114062
M3 - Journal article
C2 - 36075115
AN - SCOPUS:85137278164
VL - 183
JO - Marine Pollution Bulletin
JF - Marine Pollution Bulletin
SN - 0025-326X
M1 - 114062
ER -
ID: 320747873