dc.contributor |
Universitat de Vic - Universitat Central de Catalunya. CT BETA |
|
dc.contributor |
Universitat de Vic - Universitat Central de Catalunya. Centre d'Estudis dels Rius Mediterranis (CERM) |
|
dc.contributor.author |
Espinosa, Carme |
|
dc.contributor.author |
Abril, Meritxell |
|
dc.contributor.author |
Ponsá Salas, Sergio |
|
dc.contributor.author |
Ricart, Marta |
|
dc.contributor.author |
Vendrell Puigmitjà, Lidia |
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dc.contributor.author |
Ordeix i Rigo, Marc |
|
dc.contributor.author |
Llenas, Laia |
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dc.contributor.author |
Proia, Lorenzo |
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dc.date.accessioned |
2021-04-26T10:14:49Z |
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dc.date.available |
2021-04-26T10:14:49Z |
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dc.date.created |
2021 |
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dc.date.issued |
2021 |
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dc.identifier.citation |
Espinosa, C., Abril, M., Ricart, M., Vendrell-Puigmitja, L., Ordeix, M., Llenas, L. & Proia, Lorenzo (2021) Effects of the interaction between nutrient concentration and DIN:SRP ratio on geosmin production by freshwater biofilms. Science of Total Environment. 768: 144473. https://doi.org/10.1016/j.scitotenv.2020.144473 |
es |
dc.identifier.issn |
0048-9697 |
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dc.identifier.uri |
http://hdl.handle.net/10854/6610 |
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dc.description.abstract |
The global increase of cyanobacterial blooms occurrence has been associated with the
presence of compounds that generate earthy and musty odour in freshwater systems,
among which geosmin stands out. The lack of information on the factors associated to
geosmin production by benthic organisms has driven the development of this study,
whose main goal is to determine the effects of nutrient concentration and DIN:SRP
ratio on geosmin formation and release.
The experiment was performed in 18 microcosms under controlled conditions for 21
days, using a natural biofilm suspension from Ter river (NE, Spain) to promote biofilm
settlement. Six treatments were set crossing three DIN:SRP ratios (A = 4:1, B = 16:1
and C = 64:1) with two nutrient concentrations (Low and High).
After 7 days of experiment, geosmin was detected in biofilm, being higher under high
nutrient concentration and low DIN:SRP ratio conditions. In this treatment, geosmin in
biofilm reached its maximum concentration at day 16 (3.8 ± 0.9 ng/mg), decreasing at
the end of the experiment (21d) due to cyanobacteria detachment and geosmin
release into the water (136 ± 6 ng/L).
Overall, this experimental study showed that high nutrient concentration and low
DIN:SRP ratio favoured the Oscillatoria genus development within biofilm
communities, generating the optimal conditions for geosmin production. The interaction
between these two factors was demonstrated to be a potential driver of benthic
geosmin production and release, and should be monitored and controlled in rivers
exploited for drinking water purposes. |
es |
dc.description.sponsorship |
We would like to acknowledge the water utilities Aigües de Vic S.A. and Aigües d'Osona S.A. (Catalonia, Spain), for their funding support in the study presented in this publication. We also want to thank the help provided by Dr. Helena Guasch and Ms. Núria Pou in identifying the algal community present in the biofilm samples, and the help provided by Dr. Victoria Osorio and Dr. Joan Colon in the development of the analytical method for geosmin. The research leading to these results has received funding from the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation program – H2020 INTCATCH (grant agreement n° 689341 ). LP has received funding from the Postdoctoral Fellowships Programme Beatriu de Pinós, funded by the Secretary of Universities and Research (Government of Catalonia) and by the Horizon 2020 Programme of Research and Innovation of the European Union under the Marie Skłodowska-Curie Grant Agreement No. 801370 |
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dc.format |
application/pdf |
es |
dc.format.extent |
58 p. |
es |
dc.language.iso |
eng |
es |
dc.publisher |
Elsevier |
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dc.rights |
Aquest document està subjecte a aquesta llicència Creative Commons |
es |
dc.rights.uri |
https://creativecommons.org/licenses/by-nc-nd/4.0/deed.ca |
es |
dc.subject.other |
Rius -- Qualitat |
es |
dc.subject.other |
Nutrients |
es |
dc.subject.other |
Biofilms |
es |
dc.title |
Effects of the interaction between nutrient concentration and DIN:SRP ratio on geosmin production by freshwater biofilms |
es |
dc.type |
info:eu-repo/semantics/article |
es |
dc.embargo.terms |
12 mesos |
es |
dc.identifier.doi |
https://doi.org/10.1016/j.scitotenv.2020.144473 |
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dc.rights.accessRights |
info:eu-repo/semantics/embargoedAccess |
es |
dc.type.version |
info:eu-repo/acceptedVersion |
es |
dc.indexacio |
Indexat a WOS/JCR |
es |
dc.indexacio |
Indexat a SCOPUS |
es |