Diatom-mediated food web functioning under ocean artificial upwelling.
Journal
Scientific reports
ISSN: 2045-2322
Titre abrégé: Sci Rep
Pays: England
ID NLM: 101563288
Informations de publication
Date de publication:
17 Feb 2024
17 Feb 2024
Historique:
received:
27
10
2023
accepted:
12
02
2024
medline:
18
2
2024
pubmed:
18
2
2024
entrez:
17
2
2024
Statut:
epublish
Résumé
Enhancing ocean productivity by artificial upwelling is evaluated as a nature-based solution for food security and climate change mitigation. Fish production is intended through diatom-based plankton food webs as these are assumed to be short and efficient. However, our findings from mesocosm experiments on artificial upwelling in the oligotrophic ocean disagree with this classical food web model. Here, diatoms did not reduce trophic length and instead impaired the transfer of primary production to crustacean grazers and small pelagic fish. The diatom-driven decrease in trophic efficiency was likely mediated by changes in nutritional value for the copepod grazers. Whilst diatoms benefitted the availability of essential fatty acids, they also caused unfavorable elemental compositions via high carbon-to-nitrogen ratios (i.e. low protein content) to which the grazers were unable to adapt. This nutritional imbalance for grazers was most pronounced in systems optimized for CO
Identifiants
pubmed: 38368496
doi: 10.1038/s41598-024-54345-w
pii: 10.1038/s41598-024-54345-w
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
3955Subventions
Organisme : Horizon 2020
ID : 695094
Organisme : Bundesministerium für Bildung und Forschung
ID : 03F0897A
Informations de copyright
© 2024. The Author(s).
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