Nutrient supply and bird predation additively control insect herbivory and tree growth in two contrasting forest habitats
- Autores
- Garibaldi, Lucas Alejandro; Kitzberger, Thomas; Mazía, Noemí C.; Chaneton, Enrique J.
- Año de publicación
- 2010
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Fil: Garibaldi, Lucas Alejandro. Universidad Nacional del Comahue. Centro Regional Universitario Bariloche. Laboratorio Ecotono; Argentina.
Fil: Kitzberger, Thomas. Universidad Nacional del Comahue. Centro Regional Universitario Bariloche y INIBIOMA-oCONICET. Laboratorio Ecoton; Argentina.
Fil: Mazía, Noemí C. Universidad de Buenos Aires (UBA). Facultad de Agronomía; Argentina.
Fil: Chaneton, Enrique J. Universidad de Buenos Aires (UBA). Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas vinculadas a la Agricultura (IFEVA)-CONICET; Argentina.
Fil: Garibaldi, Lucas Alejandro. Universidad de Buenos Aires (UBA). Facultad de Agronomía; Argentina.
It has been suggested that bottom–up and top–down forces interactively control food web dynamics. While top–down effects would increase with resource availability to plants, bottom–up effects would be stronger under low predator abundance. These predictions, however, have rarely been tested at contrasting sites while keeping the dominant plant species unchanged. Furthermore, few studies have factorially manipulated both types of forces in forest communities. For two years, we evaluated the effects of fertiliser (NPK) addition and bird exclusion on tree growth, leaf traits, insect abundance, and folivory rates in a dry/warm and a wet/cold Nothofagus pumilio forest in Patagonia, Argentina. Overall, we found no interaction between nutrient supply and bird predation, although the strength of bottom–up and top–down forces differed markedly between forest sites. Treatment effects were generally weak in the wet forest, where tree growth rates and insect herbivory were low relative to the dry forest. In the dry forest, fertilisation increased sapling growth, insect abundance and folivory, whereas bird exclusion increased leaf damage and reduced tree growth. In the wet forest, fertilisation enhanced leaf nutrient contents and folivore abundance but not sapling growth, while bird exclusion had little impact on insects or trees. These results imply that factors other than nutrients and birds were important in controlling tree growth and folivore activity in the wet forest. While treatment effect sizes varied widely among feeding guilds, in general, nutrient effects on folivores were stronger than predator effects. We conclude that, within the time‐frame of this study, tree growth and herbivory were additively affected by soil nutrients and predator presence, as bird exclusion effects did not change with elevated folivore activity on fertilised trees. We also show that both top–down and bottom–up cascades were weaker in a forest site characterised by slow‐growing juvenile trees subjected to low folivore pressure. - Materia
-
Nutrient Supply
Bird Predation
Insect Herbivory - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/4.0/
- Repositorio
- Institución
- Universidad Nacional de Río Negro
- OAI Identificador
- oai:rid.unrn.edu.ar:20.500.12049/3293
Ver los metadatos del registro completo
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Nutrient supply and bird predation additively control insect herbivory and tree growth in two contrasting forest habitatsGaribaldi, Lucas AlejandroKitzberger, ThomasMazía, Noemí C.Chaneton, Enrique J.Nutrient SupplyBird PredationInsect HerbivoryFil: Garibaldi, Lucas Alejandro. Universidad Nacional del Comahue. Centro Regional Universitario Bariloche. Laboratorio Ecotono; Argentina.Fil: Kitzberger, Thomas. Universidad Nacional del Comahue. Centro Regional Universitario Bariloche y INIBIOMA-oCONICET. Laboratorio Ecoton; Argentina.Fil: Mazía, Noemí C. Universidad de Buenos Aires (UBA). Facultad de Agronomía; Argentina.Fil: Chaneton, Enrique J. Universidad de Buenos Aires (UBA). Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas vinculadas a la Agricultura (IFEVA)-CONICET; Argentina.Fil: Garibaldi, Lucas Alejandro. Universidad de Buenos Aires (UBA). Facultad de Agronomía; Argentina.It has been suggested that bottom–up and top–down forces interactively control food web dynamics. While top–down effects would increase with resource availability to plants, bottom–up effects would be stronger under low predator abundance. These predictions, however, have rarely been tested at contrasting sites while keeping the dominant plant species unchanged. Furthermore, few studies have factorially manipulated both types of forces in forest communities. For two years, we evaluated the effects of fertiliser (NPK) addition and bird exclusion on tree growth, leaf traits, insect abundance, and folivory rates in a dry/warm and a wet/cold Nothofagus pumilio forest in Patagonia, Argentina. Overall, we found no interaction between nutrient supply and bird predation, although the strength of bottom–up and top–down forces differed markedly between forest sites. Treatment effects were generally weak in the wet forest, where tree growth rates and insect herbivory were low relative to the dry forest. In the dry forest, fertilisation increased sapling growth, insect abundance and folivory, whereas bird exclusion increased leaf damage and reduced tree growth. In the wet forest, fertilisation enhanced leaf nutrient contents and folivore abundance but not sapling growth, while bird exclusion had little impact on insects or trees. These results imply that factors other than nutrients and birds were important in controlling tree growth and folivore activity in the wet forest. While treatment effect sizes varied widely among feeding guilds, in general, nutrient effects on folivores were stronger than predator effects. We conclude that, within the time‐frame of this study, tree growth and herbivory were additively affected by soil nutrients and predator presence, as bird exclusion effects did not change with elevated folivore activity on fertilised trees. We also show that both top–down and bottom–up cascades were weaker in a forest site characterised by slow‐growing juvenile trees subjected to low folivore pressure.John Wiley & Sons Ltd2010-02-16info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfGaribaldi, Lucas A., Kitzberger, Thomas., Mazía, Noemi C. & Chaneton, Enrique J. (2010). Nutrient supply and bird predation additively control insect herbivory and tree growth in two contrasting forest habitats. John Wiley & Sons Ltd. Oikos; 119 (2); 337-3491600-07060030-1299https://onlinelibrary.wiley.com/doi/abs/10.1111/j.1600-0706.2009.17862.xhttps://rid.unrn.edu.ar/jspui/handle/20.500.12049/329310.1111/j.1600-0706.2009.17862.xeng119Oikosinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/4.0/reponame:RID-UNRN (UNRN)instname:Universidad Nacional de Río Negro2025-10-16T10:06:01Zoai:rid.unrn.edu.ar:20.500.12049/3293instacron:UNRNInstitucionalhttps://rid.unrn.edu.ar/jspui/Universidad públicaNo correspondehttps://rid.unrn.edu.ar/oai/snrdrid@unrn.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:43692025-10-16 10:06:02.093RID-UNRN (UNRN) - Universidad Nacional de Río Negrofalse |
dc.title.none.fl_str_mv |
Nutrient supply and bird predation additively control insect herbivory and tree growth in two contrasting forest habitats |
title |
Nutrient supply and bird predation additively control insect herbivory and tree growth in two contrasting forest habitats |
spellingShingle |
Nutrient supply and bird predation additively control insect herbivory and tree growth in two contrasting forest habitats Garibaldi, Lucas Alejandro Nutrient Supply Bird Predation Insect Herbivory |
title_short |
Nutrient supply and bird predation additively control insect herbivory and tree growth in two contrasting forest habitats |
title_full |
Nutrient supply and bird predation additively control insect herbivory and tree growth in two contrasting forest habitats |
title_fullStr |
Nutrient supply and bird predation additively control insect herbivory and tree growth in two contrasting forest habitats |
title_full_unstemmed |
Nutrient supply and bird predation additively control insect herbivory and tree growth in two contrasting forest habitats |
title_sort |
Nutrient supply and bird predation additively control insect herbivory and tree growth in two contrasting forest habitats |
dc.creator.none.fl_str_mv |
Garibaldi, Lucas Alejandro Kitzberger, Thomas Mazía, Noemí C. Chaneton, Enrique J. |
author |
Garibaldi, Lucas Alejandro |
author_facet |
Garibaldi, Lucas Alejandro Kitzberger, Thomas Mazía, Noemí C. Chaneton, Enrique J. |
author_role |
author |
author2 |
Kitzberger, Thomas Mazía, Noemí C. Chaneton, Enrique J. |
author2_role |
author author author |
dc.subject.none.fl_str_mv |
Nutrient Supply Bird Predation Insect Herbivory |
topic |
Nutrient Supply Bird Predation Insect Herbivory |
dc.description.none.fl_txt_mv |
Fil: Garibaldi, Lucas Alejandro. Universidad Nacional del Comahue. Centro Regional Universitario Bariloche. Laboratorio Ecotono; Argentina. Fil: Kitzberger, Thomas. Universidad Nacional del Comahue. Centro Regional Universitario Bariloche y INIBIOMA-oCONICET. Laboratorio Ecoton; Argentina. Fil: Mazía, Noemí C. Universidad de Buenos Aires (UBA). Facultad de Agronomía; Argentina. Fil: Chaneton, Enrique J. Universidad de Buenos Aires (UBA). Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas vinculadas a la Agricultura (IFEVA)-CONICET; Argentina. Fil: Garibaldi, Lucas Alejandro. Universidad de Buenos Aires (UBA). Facultad de Agronomía; Argentina. It has been suggested that bottom–up and top–down forces interactively control food web dynamics. While top–down effects would increase with resource availability to plants, bottom–up effects would be stronger under low predator abundance. These predictions, however, have rarely been tested at contrasting sites while keeping the dominant plant species unchanged. Furthermore, few studies have factorially manipulated both types of forces in forest communities. For two years, we evaluated the effects of fertiliser (NPK) addition and bird exclusion on tree growth, leaf traits, insect abundance, and folivory rates in a dry/warm and a wet/cold Nothofagus pumilio forest in Patagonia, Argentina. Overall, we found no interaction between nutrient supply and bird predation, although the strength of bottom–up and top–down forces differed markedly between forest sites. Treatment effects were generally weak in the wet forest, where tree growth rates and insect herbivory were low relative to the dry forest. In the dry forest, fertilisation increased sapling growth, insect abundance and folivory, whereas bird exclusion increased leaf damage and reduced tree growth. In the wet forest, fertilisation enhanced leaf nutrient contents and folivore abundance but not sapling growth, while bird exclusion had little impact on insects or trees. These results imply that factors other than nutrients and birds were important in controlling tree growth and folivore activity in the wet forest. While treatment effect sizes varied widely among feeding guilds, in general, nutrient effects on folivores were stronger than predator effects. We conclude that, within the time‐frame of this study, tree growth and herbivory were additively affected by soil nutrients and predator presence, as bird exclusion effects did not change with elevated folivore activity on fertilised trees. We also show that both top–down and bottom–up cascades were weaker in a forest site characterised by slow‐growing juvenile trees subjected to low folivore pressure. |
description |
Fil: Garibaldi, Lucas Alejandro. Universidad Nacional del Comahue. Centro Regional Universitario Bariloche. Laboratorio Ecotono; Argentina. |
publishDate |
2010 |
dc.date.none.fl_str_mv |
2010-02-16 |
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 |
Garibaldi, Lucas A., Kitzberger, Thomas., Mazía, Noemi C. & Chaneton, Enrique J. (2010). Nutrient supply and bird predation additively control insect herbivory and tree growth in two contrasting forest habitats. John Wiley & Sons Ltd. Oikos; 119 (2); 337-349 1600-0706 0030-1299 https://onlinelibrary.wiley.com/doi/abs/10.1111/j.1600-0706.2009.17862.x https://rid.unrn.edu.ar/jspui/handle/20.500.12049/3293 10.1111/j.1600-0706.2009.17862.x |
identifier_str_mv |
Garibaldi, Lucas A., Kitzberger, Thomas., Mazía, Noemi C. & Chaneton, Enrique J. (2010). Nutrient supply and bird predation additively control insect herbivory and tree growth in two contrasting forest habitats. John Wiley & Sons Ltd. Oikos; 119 (2); 337-349 1600-0706 0030-1299 10.1111/j.1600-0706.2009.17862.x |
url |
https://onlinelibrary.wiley.com/doi/abs/10.1111/j.1600-0706.2009.17862.x https://rid.unrn.edu.ar/jspui/handle/20.500.12049/3293 |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
119 Oikos |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/4.0/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-sa/4.0/ |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
John Wiley & Sons Ltd |
publisher.none.fl_str_mv |
John Wiley & Sons Ltd |
dc.source.none.fl_str_mv |
reponame:RID-UNRN (UNRN) instname:Universidad Nacional de Río Negro |
reponame_str |
RID-UNRN (UNRN) |
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RID-UNRN (UNRN) |
instname_str |
Universidad Nacional de Río Negro |
repository.name.fl_str_mv |
RID-UNRN (UNRN) - Universidad Nacional de Río Negro |
repository.mail.fl_str_mv |
rid@unrn.edu.ar |
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score |
12.712165 |