Periphyton Responses to non-point Pollution in Eutrophic-Humic Environments: An Experimental Study

Autores
Vilches, Carolina; Giorgi, Adonis David Nazareno; Rodríguez Castro, María Carolina; Casco, Maria Adela
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We proposed to use artificial channels in laboratory assays to expose periphyton to substances released in rural environments in order to test the following hypotheses 1) a high concentration of humic substances decreases the biofilm biomass and alters its metabolism; 2) periphyton biomass and metabolism increase in response to nutrient addition in spite of the previous high nutrient concentration; 3) periphyton response to nutrient addition is smaller in the presence of humic acids. Nutrient loading associated with nonpoint pollution often occurs both during and after signiûcant precipitation events. Humic acids also increase their levels after rain. This may limit the availability of light and thus, the development of the autotrophic. However, the influence of these pollutants on periphyton in eutrophic environments may be either modest or too difficult to detect using traditional endpoints. We found that in short exposures: 1) humic substances do not decrease the biomass of periphyton nor alter its metabolism; 2) periphyton biomass and metabolism increase in response to the addition of fertilizer but not to the addition of a single nutrient; 3) periphyton response to nutrient addition is smaller in the presence of humic acids. These finding have implications for river ecosystems as they suggest that changes produced by nutrient inputs into the eutrophic stream could be fast and clearly affect periphyton algae and other related organisms such as grazers and decomposers. In addition, the presence of humic acids decreases these responses.
Fil: Vilches, Carolina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Luján. Departamento de Ciencias Básicas; Argentina
Fil: Giorgi, Adonis David Nazareno. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Luján. Departamento de Ciencias Básicas; Argentina
Fil: Rodríguez Castro, María Carolina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Luján. Departamento de Ciencias Básicas; Argentina
Fil: Casco, Maria Adela. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de la Plata. Facultad de Ciencias Naturales y Museo. Division Ficología; Argentina
Materia
Non-Point Pollution
Eutrophic Environment
Nutrient
Humic Acid
Artificial Channels
Algae
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/32654
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Periphyton Responses to non-point Pollution in Eutrophic-Humic Environments: An Experimental StudyVilches, CarolinaGiorgi, Adonis David NazarenoRodríguez Castro, María CarolinaCasco, Maria AdelaNon-Point PollutionEutrophic EnvironmentNutrientHumic AcidArtificial ChannelsAlgaehttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1We proposed to use artificial channels in laboratory assays to expose periphyton to substances released in rural environments in order to test the following hypotheses 1) a high concentration of humic substances decreases the biofilm biomass and alters its metabolism; 2) periphyton biomass and metabolism increase in response to nutrient addition in spite of the previous high nutrient concentration; 3) periphyton response to nutrient addition is smaller in the presence of humic acids. Nutrient loading associated with nonpoint pollution often occurs both during and after signiûcant precipitation events. Humic acids also increase their levels after rain. This may limit the availability of light and thus, the development of the autotrophic. However, the influence of these pollutants on periphyton in eutrophic environments may be either modest or too difficult to detect using traditional endpoints. We found that in short exposures: 1) humic substances do not decrease the biomass of periphyton nor alter its metabolism; 2) periphyton biomass and metabolism increase in response to the addition of fertilizer but not to the addition of a single nutrient; 3) periphyton response to nutrient addition is smaller in the presence of humic acids. These finding have implications for river ecosystems as they suggest that changes produced by nutrient inputs into the eutrophic stream could be fast and clearly affect periphyton algae and other related organisms such as grazers and decomposers. In addition, the presence of humic acids decreases these responses.Fil: Vilches, Carolina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Luján. Departamento de Ciencias Básicas; ArgentinaFil: Giorgi, Adonis David Nazareno. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Luján. Departamento de Ciencias Básicas; ArgentinaFil: Rodríguez Castro, María Carolina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Luján. Departamento de Ciencias Básicas; ArgentinaFil: Casco, Maria Adela. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de la Plata. Facultad de Ciencias Naturales y Museo. Division Ficología; ArgentinaUniv Tehran2014-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/32654Vilches, Carolina; Giorgi, Adonis David Nazareno; Rodríguez Castro, María Carolina; Casco, Maria Adela; Periphyton Responses to non-point Pollution in Eutrophic-Humic Environments: An Experimental Study; Univ Tehran; International Journal Of Environmental Research; 8; 3; 6-2014; 523-5301735-6865CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.22059/IJER.2014.746info:eu-repo/semantics/altIdentifier/url/https://ijer.ut.ac.ir/article_746.htmlinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:45:28Zoai:ri.conicet.gov.ar:11336/32654instacron: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:34982025-09-03 09:45:29.026CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Periphyton Responses to non-point Pollution in Eutrophic-Humic Environments: An Experimental Study
title Periphyton Responses to non-point Pollution in Eutrophic-Humic Environments: An Experimental Study
spellingShingle Periphyton Responses to non-point Pollution in Eutrophic-Humic Environments: An Experimental Study
Vilches, Carolina
Non-Point Pollution
Eutrophic Environment
Nutrient
Humic Acid
Artificial Channels
Algae
title_short Periphyton Responses to non-point Pollution in Eutrophic-Humic Environments: An Experimental Study
title_full Periphyton Responses to non-point Pollution in Eutrophic-Humic Environments: An Experimental Study
title_fullStr Periphyton Responses to non-point Pollution in Eutrophic-Humic Environments: An Experimental Study
title_full_unstemmed Periphyton Responses to non-point Pollution in Eutrophic-Humic Environments: An Experimental Study
title_sort Periphyton Responses to non-point Pollution in Eutrophic-Humic Environments: An Experimental Study
dc.creator.none.fl_str_mv Vilches, Carolina
Giorgi, Adonis David Nazareno
Rodríguez Castro, María Carolina
Casco, Maria Adela
author Vilches, Carolina
author_facet Vilches, Carolina
Giorgi, Adonis David Nazareno
Rodríguez Castro, María Carolina
Casco, Maria Adela
author_role author
author2 Giorgi, Adonis David Nazareno
Rodríguez Castro, María Carolina
Casco, Maria Adela
author2_role author
author
author
dc.subject.none.fl_str_mv Non-Point Pollution
Eutrophic Environment
Nutrient
Humic Acid
Artificial Channels
Algae
topic Non-Point Pollution
Eutrophic Environment
Nutrient
Humic Acid
Artificial Channels
Algae
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv We proposed to use artificial channels in laboratory assays to expose periphyton to substances released in rural environments in order to test the following hypotheses 1) a high concentration of humic substances decreases the biofilm biomass and alters its metabolism; 2) periphyton biomass and metabolism increase in response to nutrient addition in spite of the previous high nutrient concentration; 3) periphyton response to nutrient addition is smaller in the presence of humic acids. Nutrient loading associated with nonpoint pollution often occurs both during and after signiûcant precipitation events. Humic acids also increase their levels after rain. This may limit the availability of light and thus, the development of the autotrophic. However, the influence of these pollutants on periphyton in eutrophic environments may be either modest or too difficult to detect using traditional endpoints. We found that in short exposures: 1) humic substances do not decrease the biomass of periphyton nor alter its metabolism; 2) periphyton biomass and metabolism increase in response to the addition of fertilizer but not to the addition of a single nutrient; 3) periphyton response to nutrient addition is smaller in the presence of humic acids. These finding have implications for river ecosystems as they suggest that changes produced by nutrient inputs into the eutrophic stream could be fast and clearly affect periphyton algae and other related organisms such as grazers and decomposers. In addition, the presence of humic acids decreases these responses.
Fil: Vilches, Carolina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Luján. Departamento de Ciencias Básicas; Argentina
Fil: Giorgi, Adonis David Nazareno. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Luján. Departamento de Ciencias Básicas; Argentina
Fil: Rodríguez Castro, María Carolina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Luján. Departamento de Ciencias Básicas; Argentina
Fil: Casco, Maria Adela. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de la Plata. Facultad de Ciencias Naturales y Museo. Division Ficología; Argentina
description We proposed to use artificial channels in laboratory assays to expose periphyton to substances released in rural environments in order to test the following hypotheses 1) a high concentration of humic substances decreases the biofilm biomass and alters its metabolism; 2) periphyton biomass and metabolism increase in response to nutrient addition in spite of the previous high nutrient concentration; 3) periphyton response to nutrient addition is smaller in the presence of humic acids. Nutrient loading associated with nonpoint pollution often occurs both during and after signiûcant precipitation events. Humic acids also increase their levels after rain. This may limit the availability of light and thus, the development of the autotrophic. However, the influence of these pollutants on periphyton in eutrophic environments may be either modest or too difficult to detect using traditional endpoints. We found that in short exposures: 1) humic substances do not decrease the biomass of periphyton nor alter its metabolism; 2) periphyton biomass and metabolism increase in response to the addition of fertilizer but not to the addition of a single nutrient; 3) periphyton response to nutrient addition is smaller in the presence of humic acids. These finding have implications for river ecosystems as they suggest that changes produced by nutrient inputs into the eutrophic stream could be fast and clearly affect periphyton algae and other related organisms such as grazers and decomposers. In addition, the presence of humic acids decreases these responses.
publishDate 2014
dc.date.none.fl_str_mv 2014-06
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/11336/32654
Vilches, Carolina; Giorgi, Adonis David Nazareno; Rodríguez Castro, María Carolina; Casco, Maria Adela; Periphyton Responses to non-point Pollution in Eutrophic-Humic Environments: An Experimental Study; Univ Tehran; International Journal Of Environmental Research; 8; 3; 6-2014; 523-530
1735-6865
CONICET Digital
CONICET
url http://hdl.handle.net/11336/32654
identifier_str_mv Vilches, Carolina; Giorgi, Adonis David Nazareno; Rodríguez Castro, María Carolina; Casco, Maria Adela; Periphyton Responses to non-point Pollution in Eutrophic-Humic Environments: An Experimental Study; Univ Tehran; International Journal Of Environmental Research; 8; 3; 6-2014; 523-530
1735-6865
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.22059/IJER.2014.746
info:eu-repo/semantics/altIdentifier/url/https://ijer.ut.ac.ir/article_746.html
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
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Univ Tehran
publisher.none.fl_str_mv Univ Tehran
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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score 13.13397

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