Global pressures, specific responses: effects of nutrient enrichment in streams from different biomes
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 strea...
| Main Authors: | , , , , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2013-01-01
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| Series: | Environmental Research Letters |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/1748-9326/8/1/014002 |
| _version_ | 1797748448383991808 |
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| author | Joan Artigas Emili García-Berthou Delia E Bauer Maria I Castro Joaquín Cochero Darío C Colautti Agustina Cortelezzi John C Donato Arturo Elosegi Claudia Feijoó Adonis Giorgi Nora Gómez Leonardo Leggieri Isabel Muñoz Alberto Rodrigues-Capítulo Anna M Romaní Sergi Sabater |
| author_facet | Joan Artigas Emili García-Berthou Delia E Bauer Maria I Castro Joaquín Cochero Darío C Colautti Agustina Cortelezzi John C Donato Arturo Elosegi Claudia Feijoó Adonis Giorgi Nora Gómez Leonardo Leggieri Isabel Muñoz Alberto Rodrigues-Capítulo Anna M Romaní Sergi Sabater |
| author_sort | Joan Artigas |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-03-12T16:05:53Z |
| format | Article |
| id | doaj.art-bc9f928a8564407f90ed0a773d826a20 |
| institution | Directory Open Access Journal |
| issn | 1748-9326 |
| language | English |
| last_indexed | 2024-03-12T16:05:53Z |
| publishDate | 2013-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Environmental Research Letters |
| spelling | doaj.art-bc9f928a8564407f90ed0a773d826a202023-08-09T14:23:39ZengIOP PublishingEnvironmental Research Letters1748-93262013-01-018101400210.1088/1748-9326/8/1/014002Global pressures, specific responses: effects of nutrient enrichment in streams from different biomesJoan Artigas0Emili García-Berthou1Delia E Bauer2Maria I Castro3Joaquín Cochero4Darío C Colautti5Agustina Cortelezzi6John C Donato7Arturo Elosegi8Claudia Feijoó9Adonis Giorgi10Nora Gómez11Leonardo Leggieri12Isabel Muñoz13Alberto Rodrigues-Capítulo14Anna M Romaní15Sergi Sabater16Clermont Université, Université Blaise Pascal, Laboratoire Microorganismes: Génome et Environnement , BP 10448, F-63000 Clermont-Ferrand, France; CNRS, UMR 6023, LMGE , F-63177 Aubière, FranceInstitute of Aquatic Ecology, University of Girona , E-17071 Girona, SpainInstitute of Limnology Dr R A Ringuelet—ILPLA , Florencio Varela, Buenos Aires, ArgentinaDepartment of Biology, National University of Colombia , Bogotá DC, ColombiaInstitute of Limnology Dr R A Ringuelet—ILPLA , Florencio Varela, Buenos Aires, ArgentinaBiotechnology Research Institute, National University of San Martin , Buenos Aires, ArgentinaInstitute of Limnology Dr R A Ringuelet—ILPLA , Florencio Varela, Buenos Aires, ArgentinaDepartment of Biology, National University of Colombia , Bogotá DC, ColombiaFaculty of Science and Technology, The University of the Basque Country , Bilbao E-48080, SpainINEDES and Department of Basic Sciences, National University of Luján , 6700 Luján, ArgentinaINEDES and Department of Basic Sciences, National University of Luján , 6700 Luján, ArgentinaInstitute of Aquatic Ecology, University of Girona , E-17071 Girona, SpainINEDES and Department of Basic Sciences, National University of Luján , 6700 Luján, ArgentinaDepartment of Ecology, University of Barcelona , Barcelona E-08028, SpainInstitute of Limnology Dr R A Ringuelet—ILPLA , Florencio Varela, Buenos Aires, ArgentinaInstitute of Aquatic Ecology, University of Girona , E-17071 Girona, SpainInstitute of Aquatic Ecology, University of Girona , E-17071 Girona, Spain; Catalan Institute for Water Research (ICRA), Scientific and Technological Park of the University of Girona , Girona E-17003, SpainWe 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.https://doi.org/10.1088/1748-9326/8/1/014002biomesfishinvertebratesmicrobial biomassnutrient enrichmentstream ecosystems |
| spellingShingle | Joan Artigas Emili García-Berthou Delia E Bauer Maria I Castro Joaquín Cochero Darío C Colautti Agustina Cortelezzi John C Donato Arturo Elosegi Claudia Feijoó Adonis Giorgi Nora Gómez Leonardo Leggieri Isabel Muñoz Alberto Rodrigues-Capítulo Anna M Romaní Sergi Sabater Global pressures, specific responses: effects of nutrient enrichment in streams from different biomes Environmental Research Letters biomes fish invertebrates microbial biomass nutrient enrichment stream ecosystems |
| title | 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_short | 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 |
| topic | biomes fish invertebrates microbial biomass nutrient enrichment stream ecosystems |
| url | https://doi.org/10.1088/1748-9326/8/1/014002 |
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