Global pressures, specific responses: effects of nutrient enrichment in streams from different biomes

Autores
Artigas, Joan; García Berthou, Emili; Bauer, Delia Elena; Castro, María I.; Cochero, Joaquín; Colautti, Darío César; Cortelezzi, Agustina; Donato, John C.; Elosegi, Arturo; Feijoó, Claudia Silvina; Giorgi, Adonis David Nazareno; Gómez, Nora; Leggieri, Leonardo Ramón; Muñoz, Isabel; Rodrigues Capítulo, Alberto; Romaní, Anna M.; Sabater Cortés, Sergi
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We assessed the effects of nutrient enrichment on three stream ecosystems running through distinct biomes (Mediterranean, Pampean and Andean). We increased the concentrations of N and P in the stream water 1.6–4-fold following a before–after control–impact paired series (BACIPS) design in each stream, and evaluated changes in the biomass of bacteria, primary producers, invertebrates and fish in the enriched (E) versus control (C) reaches after nutrient addition through a predictive-BACIPS approach. The treatment produced variable biomass responses (2–77% of explained variance) among biological communities and streams. The greatest biomass response was observed for algae in the Andean stream (77% of the variance), although fish also showed important biomass responses (about 9–48%). The strongest biomass response to enrichment (77% in all biological compartments) was found in the Andean stream. The magnitude and seasonality of biomass responses to enrichment were highly site specific, often depending on the basal nutrient concentration and on windows of ecological opportunity (periods when environmental constraints other than nutrients do not limit biomass growth). The Pampean stream, with high basal nutrient concentrations, showed a weak response to enrichment (except for invertebrates), whereas the greater responses of Andean stream communities were presumably favored by wider windows of ecological opportunity in comparison to those from the Mediterranean stream. Despite variation among sites, enrichment globally stimulated the algal-based food webs (algae and invertebrate grazers) but not the detritus-based food webs (bacteria and invertebrate shredders). This study shows that nutrient enrichment tends to globally enhance the biomass of stream biological assemblages, but that its magnitude and extent within the food web are complex and are strongly determined by environmental factors and ecosystem structure.
Instituto de Limnología "Dr. Raúl A. Ringuelet"
Materia
Zoología
Biomes
Fish
Invertebrates
Microbial biomass
Nutrient enrichment
Stream ecosystems
Windows of opportunity
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/3.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/98999

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repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Global pressures, specific responses: effects of nutrient enrichment in streams from different biomesArtigas, JoanGarcía Berthou, EmiliBauer, Delia ElenaCastro, María I.Cochero, JoaquínColautti, Darío CésarCortelezzi, AgustinaDonato, John C.Elosegi, ArturoFeijoó, Claudia SilvinaGiorgi, Adonis David NazarenoGómez, NoraLeggieri, Leonardo RamónMuñoz, IsabelRodrigues Capítulo, AlbertoRomaní, Anna M.Sabater Cortés, SergiZoologíaBiomesFishInvertebratesMicrobial biomassNutrient enrichmentStream ecosystemsWindows of opportunityWe assessed the effects of nutrient enrichment on three stream ecosystems running through distinct biomes (Mediterranean, Pampean and Andean). We increased the concentrations of N and P in the stream water 1.6–4-fold following a before–after control–impact paired series (BACIPS) design in each stream, and evaluated changes in the biomass of bacteria, primary producers, invertebrates and fish in the enriched (E) versus control (C) reaches after nutrient addition through a predictive-BACIPS approach. The treatment produced variable biomass responses (2–77% of explained variance) among biological communities and streams. The greatest biomass response was observed for algae in the Andean stream (77% of the variance), although fish also showed important biomass responses (about 9–48%). The strongest biomass response to enrichment (77% in all biological compartments) was found in the Andean stream. The magnitude and seasonality of biomass responses to enrichment were highly site specific, often depending on the basal nutrient concentration and on windows of ecological opportunity (periods when environmental constraints other than nutrients do not limit biomass growth). The Pampean stream, with high basal nutrient concentrations, showed a weak response to enrichment (except for invertebrates), whereas the greater responses of Andean stream communities were presumably favored by wider windows of ecological opportunity in comparison to those from the Mediterranean stream. Despite variation among sites, enrichment globally stimulated the algal-based food webs (algae and invertebrate grazers) but not the detritus-based food webs (bacteria and invertebrate shredders). This study shows that nutrient enrichment tends to globally enhance the biomass of stream biological assemblages, but that its magnitude and extent within the food web are complex and are strongly determined by environmental factors and ecosystem structure.Instituto de Limnología "Dr. Raúl A. Ringuelet"2013-01-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf1-13http://sedici.unlp.edu.ar/handle/10915/98999enginfo:eu-repo/semantics/altIdentifier/url/https://ri.conicet.gov.ar/11336/18466info:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.1088/1748-9326/8/1/014002/metainfo:eu-repo/semantics/altIdentifier/issn/1748-9326info:eu-repo/semantics/altIdentifier/doi/10.1088/1748-9326/8/1/014002info:eu-repo/semantics/altIdentifier/hdl/11336/18466info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/3.0/Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported (CC BY-NC-SA 3.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:19:56Zoai:sedici.unlp.edu.ar:10915/98999Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:19:56.309SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Global pressures, specific responses: effects of nutrient enrichment in streams from different biomes
title Global pressures, specific responses: effects of nutrient enrichment in streams from different biomes
spellingShingle Global pressures, specific responses: effects of nutrient enrichment in streams from different biomes
Artigas, Joan
Zoología
Biomes
Fish
Invertebrates
Microbial biomass
Nutrient enrichment
Stream ecosystems
Windows of opportunity
title_short Global pressures, specific responses: effects of nutrient enrichment in streams from different biomes
title_full Global pressures, specific responses: effects of nutrient enrichment in streams from different biomes
title_fullStr Global pressures, specific responses: effects of nutrient enrichment in streams from different biomes
title_full_unstemmed Global pressures, specific responses: effects of nutrient enrichment in streams from different biomes
title_sort Global pressures, specific responses: effects of nutrient enrichment in streams from different biomes
dc.creator.none.fl_str_mv Artigas, Joan
García Berthou, Emili
Bauer, Delia Elena
Castro, María I.
Cochero, Joaquín
Colautti, Darío César
Cortelezzi, Agustina
Donato, John C.
Elosegi, Arturo
Feijoó, Claudia Silvina
Giorgi, Adonis David Nazareno
Gómez, Nora
Leggieri, Leonardo Ramón
Muñoz, Isabel
Rodrigues Capítulo, Alberto
Romaní, Anna M.
Sabater Cortés, Sergi
author Artigas, Joan
author_facet Artigas, Joan
García Berthou, Emili
Bauer, Delia Elena
Castro, María I.
Cochero, Joaquín
Colautti, Darío César
Cortelezzi, Agustina
Donato, John C.
Elosegi, Arturo
Feijoó, Claudia Silvina
Giorgi, Adonis David Nazareno
Gómez, Nora
Leggieri, Leonardo Ramón
Muñoz, Isabel
Rodrigues Capítulo, Alberto
Romaní, Anna M.
Sabater Cortés, Sergi
author_role author
author2 García Berthou, Emili
Bauer, Delia Elena
Castro, María I.
Cochero, Joaquín
Colautti, Darío César
Cortelezzi, Agustina
Donato, John C.
Elosegi, Arturo
Feijoó, Claudia Silvina
Giorgi, Adonis David Nazareno
Gómez, Nora
Leggieri, Leonardo Ramón
Muñoz, Isabel
Rodrigues Capítulo, Alberto
Romaní, Anna M.
Sabater Cortés, Sergi
author2_role author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Zoología
Biomes
Fish
Invertebrates
Microbial biomass
Nutrient enrichment
Stream ecosystems
Windows of opportunity
topic Zoología
Biomes
Fish
Invertebrates
Microbial biomass
Nutrient enrichment
Stream ecosystems
Windows of opportunity
dc.description.none.fl_txt_mv We assessed the effects of nutrient enrichment on three stream ecosystems running through distinct biomes (Mediterranean, Pampean and Andean). We increased the concentrations of N and P in the stream water 1.6–4-fold following a before–after control–impact paired series (BACIPS) design in each stream, and evaluated changes in the biomass of bacteria, primary producers, invertebrates and fish in the enriched (E) versus control (C) reaches after nutrient addition through a predictive-BACIPS approach. The treatment produced variable biomass responses (2–77% of explained variance) among biological communities and streams. The greatest biomass response was observed for algae in the Andean stream (77% of the variance), although fish also showed important biomass responses (about 9–48%). The strongest biomass response to enrichment (77% in all biological compartments) was found in the Andean stream. The magnitude and seasonality of biomass responses to enrichment were highly site specific, often depending on the basal nutrient concentration and on windows of ecological opportunity (periods when environmental constraints other than nutrients do not limit biomass growth). The Pampean stream, with high basal nutrient concentrations, showed a weak response to enrichment (except for invertebrates), whereas the greater responses of Andean stream communities were presumably favored by wider windows of ecological opportunity in comparison to those from the Mediterranean stream. Despite variation among sites, enrichment globally stimulated the algal-based food webs (algae and invertebrate grazers) but not the detritus-based food webs (bacteria and invertebrate shredders). This study shows that nutrient enrichment tends to globally enhance the biomass of stream biological assemblages, but that its magnitude and extent within the food web are complex and are strongly determined by environmental factors and ecosystem structure.
Instituto de Limnología "Dr. Raúl A. Ringuelet"
description We assessed the effects of nutrient enrichment on three stream ecosystems running through distinct biomes (Mediterranean, Pampean and Andean). We increased the concentrations of N and P in the stream water 1.6–4-fold following a before–after control–impact paired series (BACIPS) design in each stream, and evaluated changes in the biomass of bacteria, primary producers, invertebrates and fish in the enriched (E) versus control (C) reaches after nutrient addition through a predictive-BACIPS approach. The treatment produced variable biomass responses (2–77% of explained variance) among biological communities and streams. The greatest biomass response was observed for algae in the Andean stream (77% of the variance), although fish also showed important biomass responses (about 9–48%). The strongest biomass response to enrichment (77% in all biological compartments) was found in the Andean stream. The magnitude and seasonality of biomass responses to enrichment were highly site specific, often depending on the basal nutrient concentration and on windows of ecological opportunity (periods when environmental constraints other than nutrients do not limit biomass growth). The Pampean stream, with high basal nutrient concentrations, showed a weak response to enrichment (except for invertebrates), whereas the greater responses of Andean stream communities were presumably favored by wider windows of ecological opportunity in comparison to those from the Mediterranean stream. Despite variation among sites, enrichment globally stimulated the algal-based food webs (algae and invertebrate grazers) but not the detritus-based food webs (bacteria and invertebrate shredders). This study shows that nutrient enrichment tends to globally enhance the biomass of stream biological assemblages, but that its magnitude and extent within the food web are complex and are strongly determined by environmental factors and ecosystem structure.
publishDate 2013
dc.date.none.fl_str_mv 2013-01-09
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info:eu-repo/semantics/altIdentifier/doi/10.1088/1748-9326/8/1/014002
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