Sediment archives reveal irreversible shifts in plankton communities after World War II and agricultural pollution
To evaluate the stability and resilience1 of coastal ecosystem communities to perturbations that occurred during the Anthropocene,2 pre-industrial biodiversity baselines inferred from paleoarchives are needed.3,4 The study of ancient DNA (aDNA) from sediments (sedaDNA)5 has provided valuable informa...
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Online Access: | https://archimer.ifremer.fr/doc/00690/80195/95791.pdf https://doi.org/10.1016/j.cub.2021.03.079 https://archimer.ifremer.fr/doc/00690/80195/ |
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ftarchimer:oai:archimer.ifremer.fr:80195 2023-05-15T17:41:35+02:00 Sediment archives reveal irreversible shifts in plankton communities after World War II and agricultural pollution Siano, Raffaele Lassudrie Duchesne, Malwenn Cuzin, Pierre Briant, Nicolas Loizeau, Veronique Schmidt, Sabine Ehrhold, Axel Mertens, Kenneth Lambert, Clément Quintric, Laure Noël, Cyril Latimier, Marie Quéré, Julien Durand, Patrick Penaud, Aurélie 2021-06 application/pdf https://archimer.ifremer.fr/doc/00690/80195/95791.pdf https://doi.org/10.1016/j.cub.2021.03.079 https://archimer.ifremer.fr/doc/00690/80195/ eng eng Elsevier BV https://archimer.ifremer.fr/doc/00690/80195/95791.pdf doi:10.1016/j.cub.2021.03.079 https://archimer.ifremer.fr/doc/00690/80195/ info:eu-repo/semantics/openAccess restricted use Current Biology (0960-9822) (Elsevier BV), 2021-06 , Vol. 31 , N. 12 , P. 2682-2689.e7 text Publication info:eu-repo/semantics/article 2021 ftarchimer https://doi.org/10.1016/j.cub.2021.03.079 2022-09-06T22:50:27Z To evaluate the stability and resilience1 of coastal ecosystem communities to perturbations that occurred during the Anthropocene,2 pre-industrial biodiversity baselines inferred from paleoarchives are needed.3,4 The study of ancient DNA (aDNA) from sediments (sedaDNA)5 has provided valuable information about past dynamics of microbial species6, 7, 8 and communities9, 10, 11, 12, 13, 14, 15, 16, 17, 18 in relation to ecosystem variations. Shifts in planktonic protist communities might significantly affect marine ecosystems through cascading effects,19, 20, 21 and therefore the analysis of this compartment is essential for the assessment of ecosystem variations. Here, sediment cores collected from different sites of the Bay of Brest (northeast Atlantic, France) allowed ca. 1,400 years of retrospective analyses of the effects of human pollution on marine protists. Comparison of sedaDNA extractions and metabarcoding analyses with different barcode regions (V4 and V7 18S rDNA) revealed that protist assemblages in ancient sediments are mainly composed of species known to produce resting stages. Heavy-metal pollution traces in sediments were ascribed to the World War II period and coincided with community shifts within dinoflagellates and stramenopiles. After the war and especially from the 1980s to 1990s, protist genera shifts followed chronic contaminations of agricultural origin. Community composition reconstruction over time showed that there was no recovery to a Middle Ages baseline composition. This demonstrates the irreversibility of the observed shifts after the cumulative effect of war and agricultural pollutions. Developing a paleoecological approach, this study highlights how human contaminations irreversibly affect marine microbial compartments, which contributes to the debate on coastal ecosystem preservation and restoration. Article in Journal/Newspaper Northeast Atlantic Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) Current Biology 31 12 2682 2689.e7 |
institution |
Open Polar |
collection |
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) |
op_collection_id |
ftarchimer |
language |
English |
description |
To evaluate the stability and resilience1 of coastal ecosystem communities to perturbations that occurred during the Anthropocene,2 pre-industrial biodiversity baselines inferred from paleoarchives are needed.3,4 The study of ancient DNA (aDNA) from sediments (sedaDNA)5 has provided valuable information about past dynamics of microbial species6, 7, 8 and communities9, 10, 11, 12, 13, 14, 15, 16, 17, 18 in relation to ecosystem variations. Shifts in planktonic protist communities might significantly affect marine ecosystems through cascading effects,19, 20, 21 and therefore the analysis of this compartment is essential for the assessment of ecosystem variations. Here, sediment cores collected from different sites of the Bay of Brest (northeast Atlantic, France) allowed ca. 1,400 years of retrospective analyses of the effects of human pollution on marine protists. Comparison of sedaDNA extractions and metabarcoding analyses with different barcode regions (V4 and V7 18S rDNA) revealed that protist assemblages in ancient sediments are mainly composed of species known to produce resting stages. Heavy-metal pollution traces in sediments were ascribed to the World War II period and coincided with community shifts within dinoflagellates and stramenopiles. After the war and especially from the 1980s to 1990s, protist genera shifts followed chronic contaminations of agricultural origin. Community composition reconstruction over time showed that there was no recovery to a Middle Ages baseline composition. This demonstrates the irreversibility of the observed shifts after the cumulative effect of war and agricultural pollutions. Developing a paleoecological approach, this study highlights how human contaminations irreversibly affect marine microbial compartments, which contributes to the debate on coastal ecosystem preservation and restoration. |
format |
Article in Journal/Newspaper |
author |
Siano, Raffaele Lassudrie Duchesne, Malwenn Cuzin, Pierre Briant, Nicolas Loizeau, Veronique Schmidt, Sabine Ehrhold, Axel Mertens, Kenneth Lambert, Clément Quintric, Laure Noël, Cyril Latimier, Marie Quéré, Julien Durand, Patrick Penaud, Aurélie |
spellingShingle |
Siano, Raffaele Lassudrie Duchesne, Malwenn Cuzin, Pierre Briant, Nicolas Loizeau, Veronique Schmidt, Sabine Ehrhold, Axel Mertens, Kenneth Lambert, Clément Quintric, Laure Noël, Cyril Latimier, Marie Quéré, Julien Durand, Patrick Penaud, Aurélie Sediment archives reveal irreversible shifts in plankton communities after World War II and agricultural pollution |
author_facet |
Siano, Raffaele Lassudrie Duchesne, Malwenn Cuzin, Pierre Briant, Nicolas Loizeau, Veronique Schmidt, Sabine Ehrhold, Axel Mertens, Kenneth Lambert, Clément Quintric, Laure Noël, Cyril Latimier, Marie Quéré, Julien Durand, Patrick Penaud, Aurélie |
author_sort |
Siano, Raffaele |
title |
Sediment archives reveal irreversible shifts in plankton communities after World War II and agricultural pollution |
title_short |
Sediment archives reveal irreversible shifts in plankton communities after World War II and agricultural pollution |
title_full |
Sediment archives reveal irreversible shifts in plankton communities after World War II and agricultural pollution |
title_fullStr |
Sediment archives reveal irreversible shifts in plankton communities after World War II and agricultural pollution |
title_full_unstemmed |
Sediment archives reveal irreversible shifts in plankton communities after World War II and agricultural pollution |
title_sort |
sediment archives reveal irreversible shifts in plankton communities after world war ii and agricultural pollution |
publisher |
Elsevier BV |
publishDate |
2021 |
url |
https://archimer.ifremer.fr/doc/00690/80195/95791.pdf https://doi.org/10.1016/j.cub.2021.03.079 https://archimer.ifremer.fr/doc/00690/80195/ |
genre |
Northeast Atlantic |
genre_facet |
Northeast Atlantic |
op_source |
Current Biology (0960-9822) (Elsevier BV), 2021-06 , Vol. 31 , N. 12 , P. 2682-2689.e7 |
op_relation |
https://archimer.ifremer.fr/doc/00690/80195/95791.pdf doi:10.1016/j.cub.2021.03.079 https://archimer.ifremer.fr/doc/00690/80195/ |
op_rights |
info:eu-repo/semantics/openAccess restricted use |
op_doi |
https://doi.org/10.1016/j.cub.2021.03.079 |
container_title |
Current Biology |
container_volume |
31 |
container_issue |
12 |
container_start_page |
2682 |
op_container_end_page |
2689.e7 |
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1766143222534373376 |