Drought episode modulates the response of river biofilms to Triclosan
- Autores
- Proia, L.; Vilches, Carolina; Boninneau, C.; Kantiani, L.; Farré, Maria Marcela; Romaní, Anna M.; Sabater Cortés, Sergi; Guasch, H.
- Año de publicación
- 2013
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- The consequences of global change on rivers include altered flow regime, and entrance of compounds that may be toxic to biota. When water is scarce, a reduced dilution capacity may amplify the effects of chemical pollution. Therefore, studying the response of natural communities to compromised water flow and to toxicants is critical for assessing how global change may affect river ecosystems. This work aims to investigate how an episode of drought might influence the response of river biofilms to pulses of triclosan (TCS). The objectives were to assess the separate and combined effects of simulated drought (achieved through drastic flow alteration) and of TCS exposure on biofilms growing in artificial channels. Thus, three-week-old biofilms were studied under four conditions: Control (normal water flow); Simulated Drought (1 week reduced flow + 2 days interrupted flow); TCS only (normal water flow plus a 48-h pulse of TCS); and Simulated Drought + TCS. All channels were then left for 2 weeks under steady flow conditions, and their responses and recovery were studied. Several descriptors of biofilms were analyzed before and after each step. Flow reduction and subsequent interruption were found to provoke an increase in extracellular phosphatase activity, bacterial mortality and green algae biomass. The TCS pulses severely affected biofilms: they drastically reduced photosynthetic efficiency, the viability of bacteria and diatoms, and phosphate uptake. Latent consequences evidenced significant combined effects caused by the two stressors. The biofilms exposed only to TCS recovered far better than those subjected to both altered flow and subsequent TCS exposure: the latter suffered more persistent consequences, indicating that simulated drought amplified the toxicity of this compound. This finding has implications for river ecosystems, as it suggests that the toxicity of pollutants to biofilms may be exacerbated following a drought.
Fil: Proia, L.. Universidad de Girona; España
Fil: Vilches, Carolina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Luján. Departamento de Ciencias Básicas; Argentina. Universidad de Girona; España
Fil: Boninneau, C.. Universidad de Girona; España
Fil: Kantiani, L.. Instituto Catalán de Investigaciones en Agua; España
Fil: Farré, Maria Marcela. Instituto Catalán de Investigaciones en Agua; España
Fil: Romaní, Anna M..
Fil: Sabater Cortés, Sergi. Universidad de Girona; España. Instituto Catalán de Investigaciones en Agua; España
Fil: Guasch, H.. Universidad de Girona; España - Materia
-
Biofilms
Drought
Triclosan
Recovery
River
Toxicity - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/20924
Ver los metadatos del registro completo
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spelling |
Drought episode modulates the response of river biofilms to TriclosanProia, L.Vilches, CarolinaBoninneau, C.Kantiani, L.Farré, Maria MarcelaRomaní, Anna M.Sabater Cortés, SergiGuasch, H.BiofilmsDroughtTriclosanRecoveryRiverToxicityhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1The consequences of global change on rivers include altered flow regime, and entrance of compounds that may be toxic to biota. When water is scarce, a reduced dilution capacity may amplify the effects of chemical pollution. Therefore, studying the response of natural communities to compromised water flow and to toxicants is critical for assessing how global change may affect river ecosystems. This work aims to investigate how an episode of drought might influence the response of river biofilms to pulses of triclosan (TCS). The objectives were to assess the separate and combined effects of simulated drought (achieved through drastic flow alteration) and of TCS exposure on biofilms growing in artificial channels. Thus, three-week-old biofilms were studied under four conditions: Control (normal water flow); Simulated Drought (1 week reduced flow + 2 days interrupted flow); TCS only (normal water flow plus a 48-h pulse of TCS); and Simulated Drought + TCS. All channels were then left for 2 weeks under steady flow conditions, and their responses and recovery were studied. Several descriptors of biofilms were analyzed before and after each step. Flow reduction and subsequent interruption were found to provoke an increase in extracellular phosphatase activity, bacterial mortality and green algae biomass. The TCS pulses severely affected biofilms: they drastically reduced photosynthetic efficiency, the viability of bacteria and diatoms, and phosphate uptake. Latent consequences evidenced significant combined effects caused by the two stressors. The biofilms exposed only to TCS recovered far better than those subjected to both altered flow and subsequent TCS exposure: the latter suffered more persistent consequences, indicating that simulated drought amplified the toxicity of this compound. This finding has implications for river ecosystems, as it suggests that the toxicity of pollutants to biofilms may be exacerbated following a drought.Fil: Proia, L.. Universidad de Girona; EspañaFil: Vilches, Carolina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Luján. Departamento de Ciencias Básicas; Argentina. Universidad de Girona; EspañaFil: Boninneau, C.. Universidad de Girona; EspañaFil: Kantiani, L.. Instituto Catalán de Investigaciones en Agua; EspañaFil: Farré, Maria Marcela. Instituto Catalán de Investigaciones en Agua; EspañaFil: Romaní, Anna M..Fil: Sabater Cortés, Sergi. Universidad de Girona; España. Instituto Catalán de Investigaciones en Agua; EspañaFil: Guasch, H.. Universidad de Girona; EspañaElsevier Science2013-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/20924Proia, L.; Vilches, Carolina; Boninneau, C.; Kantiani, L.; Farré, Maria Marcela; et al.; Drought episode modulates the response of river biofilms to Triclosan; Elsevier Science; Aquatic Toxicology; 127; 2-2013; 36-450166-445XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0166445X12000197info:eu-repo/semantics/altIdentifier/doi/10.1016/j.aquatox.2012.01.006info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:35:47Zoai:ri.conicet.gov.ar:11336/20924instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:35:48.263CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Drought episode modulates the response of river biofilms to Triclosan |
title |
Drought episode modulates the response of river biofilms to Triclosan |
spellingShingle |
Drought episode modulates the response of river biofilms to Triclosan Proia, L. Biofilms Drought Triclosan Recovery River Toxicity |
title_short |
Drought episode modulates the response of river biofilms to Triclosan |
title_full |
Drought episode modulates the response of river biofilms to Triclosan |
title_fullStr |
Drought episode modulates the response of river biofilms to Triclosan |
title_full_unstemmed |
Drought episode modulates the response of river biofilms to Triclosan |
title_sort |
Drought episode modulates the response of river biofilms to Triclosan |
dc.creator.none.fl_str_mv |
Proia, L. Vilches, Carolina Boninneau, C. Kantiani, L. Farré, Maria Marcela Romaní, Anna M. Sabater Cortés, Sergi Guasch, H. |
author |
Proia, L. |
author_facet |
Proia, L. Vilches, Carolina Boninneau, C. Kantiani, L. Farré, Maria Marcela Romaní, Anna M. Sabater Cortés, Sergi Guasch, H. |
author_role |
author |
author2 |
Vilches, Carolina Boninneau, C. Kantiani, L. Farré, Maria Marcela Romaní, Anna M. Sabater Cortés, Sergi Guasch, H. |
author2_role |
author author author author author author author |
dc.subject.none.fl_str_mv |
Biofilms Drought Triclosan Recovery River Toxicity |
topic |
Biofilms Drought Triclosan Recovery River Toxicity |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
The consequences of global change on rivers include altered flow regime, and entrance of compounds that may be toxic to biota. When water is scarce, a reduced dilution capacity may amplify the effects of chemical pollution. Therefore, studying the response of natural communities to compromised water flow and to toxicants is critical for assessing how global change may affect river ecosystems. This work aims to investigate how an episode of drought might influence the response of river biofilms to pulses of triclosan (TCS). The objectives were to assess the separate and combined effects of simulated drought (achieved through drastic flow alteration) and of TCS exposure on biofilms growing in artificial channels. Thus, three-week-old biofilms were studied under four conditions: Control (normal water flow); Simulated Drought (1 week reduced flow + 2 days interrupted flow); TCS only (normal water flow plus a 48-h pulse of TCS); and Simulated Drought + TCS. All channels were then left for 2 weeks under steady flow conditions, and their responses and recovery were studied. Several descriptors of biofilms were analyzed before and after each step. Flow reduction and subsequent interruption were found to provoke an increase in extracellular phosphatase activity, bacterial mortality and green algae biomass. The TCS pulses severely affected biofilms: they drastically reduced photosynthetic efficiency, the viability of bacteria and diatoms, and phosphate uptake. Latent consequences evidenced significant combined effects caused by the two stressors. The biofilms exposed only to TCS recovered far better than those subjected to both altered flow and subsequent TCS exposure: the latter suffered more persistent consequences, indicating that simulated drought amplified the toxicity of this compound. This finding has implications for river ecosystems, as it suggests that the toxicity of pollutants to biofilms may be exacerbated following a drought. Fil: Proia, L.. Universidad de Girona; España Fil: Vilches, Carolina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Luján. Departamento de Ciencias Básicas; Argentina. Universidad de Girona; España Fil: Boninneau, C.. Universidad de Girona; España Fil: Kantiani, L.. Instituto Catalán de Investigaciones en Agua; España Fil: Farré, Maria Marcela. Instituto Catalán de Investigaciones en Agua; España Fil: Romaní, Anna M.. Fil: Sabater Cortés, Sergi. Universidad de Girona; España. Instituto Catalán de Investigaciones en Agua; España Fil: Guasch, H.. Universidad de Girona; España |
description |
The consequences of global change on rivers include altered flow regime, and entrance of compounds that may be toxic to biota. When water is scarce, a reduced dilution capacity may amplify the effects of chemical pollution. Therefore, studying the response of natural communities to compromised water flow and to toxicants is critical for assessing how global change may affect river ecosystems. This work aims to investigate how an episode of drought might influence the response of river biofilms to pulses of triclosan (TCS). The objectives were to assess the separate and combined effects of simulated drought (achieved through drastic flow alteration) and of TCS exposure on biofilms growing in artificial channels. Thus, three-week-old biofilms were studied under four conditions: Control (normal water flow); Simulated Drought (1 week reduced flow + 2 days interrupted flow); TCS only (normal water flow plus a 48-h pulse of TCS); and Simulated Drought + TCS. All channels were then left for 2 weeks under steady flow conditions, and their responses and recovery were studied. Several descriptors of biofilms were analyzed before and after each step. Flow reduction and subsequent interruption were found to provoke an increase in extracellular phosphatase activity, bacterial mortality and green algae biomass. The TCS pulses severely affected biofilms: they drastically reduced photosynthetic efficiency, the viability of bacteria and diatoms, and phosphate uptake. Latent consequences evidenced significant combined effects caused by the two stressors. The biofilms exposed only to TCS recovered far better than those subjected to both altered flow and subsequent TCS exposure: the latter suffered more persistent consequences, indicating that simulated drought amplified the toxicity of this compound. This finding has implications for river ecosystems, as it suggests that the toxicity of pollutants to biofilms may be exacerbated following a drought. |
publishDate |
2013 |
dc.date.none.fl_str_mv |
2013-02 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/20924 Proia, L.; Vilches, Carolina; Boninneau, C.; Kantiani, L.; Farré, Maria Marcela; et al.; Drought episode modulates the response of river biofilms to Triclosan; Elsevier Science; Aquatic Toxicology; 127; 2-2013; 36-45 0166-445X CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/20924 |
identifier_str_mv |
Proia, L.; Vilches, Carolina; Boninneau, C.; Kantiani, L.; Farré, Maria Marcela; et al.; Drought episode modulates the response of river biofilms to Triclosan; Elsevier Science; Aquatic Toxicology; 127; 2-2013; 36-45 0166-445X CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0166445X12000197 info:eu-repo/semantics/altIdentifier/doi/10.1016/j.aquatox.2012.01.006 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Elsevier Science |
publisher.none.fl_str_mv |
Elsevier Science |
dc.source.none.fl_str_mv |
reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
reponame_str |
CONICET Digital (CONICET) |
collection |
CONICET Digital (CONICET) |
instname_str |
Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.name.fl_str_mv |
CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.mail.fl_str_mv |
dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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1844614377540419584 |
score |
13.070432 |