Grasses have larger response than shrubs to increased nitrogen availability: A fertilization experiment in the Patagonian Steppe
- Autores
- Yahdjian, María Laura; Gherardi, Laureano; Sala, Osvaldo Esteban
- Año de publicación
- 2014
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Nitrogen limits plant growth in almost all terrestrial ecosystems, even in low-precipitation ecosystems. Vegetation in arid ecosystems is usually composed of two dominant plant-functional types, grasses and shrubs, which have different rooting and water acquisition patterns. These plant-functional types may respond differently to N availability because they have different strategies to absorb and retranslocate N. We hypothesized that grasses are more N limited than shrubs, and consequently will show higher responses to N addition. To test this hypothesis, we added 50 Kg N.Ha-1.year-1 as NH4NO3 during two years in the Patagonian steppe, Argentina, and we evaluated the responses of aboveground net primary production and N concentration of green leaves of the dominant grass and shrub species. Grass biomass significantly (P=0.007) increased with increased N availability whereas shrub biomass did not change after two years of N addition. Shrubs have higher nitrogen concentration in green leaves than grasses, particularly the leguminous Adesmia volkmani, and showed no response to N addition whereas foliar N concentration of grasses significantly increased with N fertilization (P<0.05). Grasses may have a larger response to increase N availability than shrubs because they have a more open N economy absorbing up to 30% of their annual requirement from the soil. In contrast, shrubs have a closer N cycle, absorbing between 7 to 16% of their annual N requirement from the soil. Consequently shrubs depend less on soil N availability and are less responsive to increases in soil N.
Fil: Yahdjian, María Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura; Argentina
Fil: Gherardi, Laureano. Arizona State University; Estados Unidos
Fil: Sala, Osvaldo Esteban. Arizona State University; Estados Unidos - Materia
-
Arid Ecosystems
Grasses
Manipulative Experiments
Fertilization - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/4176
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Grasses have larger response than shrubs to increased nitrogen availability: A fertilization experiment in the Patagonian SteppeYahdjian, María LauraGherardi, LaureanoSala, Osvaldo EstebanArid EcosystemsGrassesManipulative ExperimentsFertilizationhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Nitrogen limits plant growth in almost all terrestrial ecosystems, even in low-precipitation ecosystems. Vegetation in arid ecosystems is usually composed of two dominant plant-functional types, grasses and shrubs, which have different rooting and water acquisition patterns. These plant-functional types may respond differently to N availability because they have different strategies to absorb and retranslocate N. We hypothesized that grasses are more N limited than shrubs, and consequently will show higher responses to N addition. To test this hypothesis, we added 50 Kg N.Ha-1.year-1 as NH4NO3 during two years in the Patagonian steppe, Argentina, and we evaluated the responses of aboveground net primary production and N concentration of green leaves of the dominant grass and shrub species. Grass biomass significantly (P=0.007) increased with increased N availability whereas shrub biomass did not change after two years of N addition. Shrubs have higher nitrogen concentration in green leaves than grasses, particularly the leguminous Adesmia volkmani, and showed no response to N addition whereas foliar N concentration of grasses significantly increased with N fertilization (P<0.05). Grasses may have a larger response to increase N availability than shrubs because they have a more open N economy absorbing up to 30% of their annual requirement from the soil. In contrast, shrubs have a closer N cycle, absorbing between 7 to 16% of their annual N requirement from the soil. Consequently shrubs depend less on soil N availability and are less responsive to increases in soil N.Fil: Yahdjian, María Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura; ArgentinaFil: Gherardi, Laureano. Arizona State University; Estados UnidosFil: Sala, Osvaldo Esteban. Arizona State University; Estados UnidosElsevier2014-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/4176Yahdjian, María Laura; Gherardi, Laureano; Sala, Osvaldo Esteban; Grasses have larger response than shrubs to increased nitrogen availability: A fertilization experiment in the Patagonian Steppe; Elsevier; Journal of Arid Environments; 102; 1-2014; 17-200140-1963enginfo:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0140196313002097info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jaridenv.2013.11.002info:eu-repo/semantics/altIdentifier/issn/0140-1963info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:24:30Zoai:ri.conicet.gov.ar:11336/4176instacron: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 10:24:30.664CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Grasses have larger response than shrubs to increased nitrogen availability: A fertilization experiment in the Patagonian Steppe |
title |
Grasses have larger response than shrubs to increased nitrogen availability: A fertilization experiment in the Patagonian Steppe |
spellingShingle |
Grasses have larger response than shrubs to increased nitrogen availability: A fertilization experiment in the Patagonian Steppe Yahdjian, María Laura Arid Ecosystems Grasses Manipulative Experiments Fertilization |
title_short |
Grasses have larger response than shrubs to increased nitrogen availability: A fertilization experiment in the Patagonian Steppe |
title_full |
Grasses have larger response than shrubs to increased nitrogen availability: A fertilization experiment in the Patagonian Steppe |
title_fullStr |
Grasses have larger response than shrubs to increased nitrogen availability: A fertilization experiment in the Patagonian Steppe |
title_full_unstemmed |
Grasses have larger response than shrubs to increased nitrogen availability: A fertilization experiment in the Patagonian Steppe |
title_sort |
Grasses have larger response than shrubs to increased nitrogen availability: A fertilization experiment in the Patagonian Steppe |
dc.creator.none.fl_str_mv |
Yahdjian, María Laura Gherardi, Laureano Sala, Osvaldo Esteban |
author |
Yahdjian, María Laura |
author_facet |
Yahdjian, María Laura Gherardi, Laureano Sala, Osvaldo Esteban |
author_role |
author |
author2 |
Gherardi, Laureano Sala, Osvaldo Esteban |
author2_role |
author author |
dc.subject.none.fl_str_mv |
Arid Ecosystems Grasses Manipulative Experiments Fertilization |
topic |
Arid Ecosystems Grasses Manipulative Experiments Fertilization |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
Nitrogen limits plant growth in almost all terrestrial ecosystems, even in low-precipitation ecosystems. Vegetation in arid ecosystems is usually composed of two dominant plant-functional types, grasses and shrubs, which have different rooting and water acquisition patterns. These plant-functional types may respond differently to N availability because they have different strategies to absorb and retranslocate N. We hypothesized that grasses are more N limited than shrubs, and consequently will show higher responses to N addition. To test this hypothesis, we added 50 Kg N.Ha-1.year-1 as NH4NO3 during two years in the Patagonian steppe, Argentina, and we evaluated the responses of aboveground net primary production and N concentration of green leaves of the dominant grass and shrub species. Grass biomass significantly (P=0.007) increased with increased N availability whereas shrub biomass did not change after two years of N addition. Shrubs have higher nitrogen concentration in green leaves than grasses, particularly the leguminous Adesmia volkmani, and showed no response to N addition whereas foliar N concentration of grasses significantly increased with N fertilization (P<0.05). Grasses may have a larger response to increase N availability than shrubs because they have a more open N economy absorbing up to 30% of their annual requirement from the soil. In contrast, shrubs have a closer N cycle, absorbing between 7 to 16% of their annual N requirement from the soil. Consequently shrubs depend less on soil N availability and are less responsive to increases in soil N. Fil: Yahdjian, María Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura; Argentina Fil: Gherardi, Laureano. Arizona State University; Estados Unidos Fil: Sala, Osvaldo Esteban. Arizona State University; Estados Unidos |
description |
Nitrogen limits plant growth in almost all terrestrial ecosystems, even in low-precipitation ecosystems. Vegetation in arid ecosystems is usually composed of two dominant plant-functional types, grasses and shrubs, which have different rooting and water acquisition patterns. These plant-functional types may respond differently to N availability because they have different strategies to absorb and retranslocate N. We hypothesized that grasses are more N limited than shrubs, and consequently will show higher responses to N addition. To test this hypothesis, we added 50 Kg N.Ha-1.year-1 as NH4NO3 during two years in the Patagonian steppe, Argentina, and we evaluated the responses of aboveground net primary production and N concentration of green leaves of the dominant grass and shrub species. Grass biomass significantly (P=0.007) increased with increased N availability whereas shrub biomass did not change after two years of N addition. Shrubs have higher nitrogen concentration in green leaves than grasses, particularly the leguminous Adesmia volkmani, and showed no response to N addition whereas foliar N concentration of grasses significantly increased with N fertilization (P<0.05). Grasses may have a larger response to increase N availability than shrubs because they have a more open N economy absorbing up to 30% of their annual requirement from the soil. In contrast, shrubs have a closer N cycle, absorbing between 7 to 16% of their annual N requirement from the soil. Consequently shrubs depend less on soil N availability and are less responsive to increases in soil N. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-01 |
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/11336/4176 Yahdjian, María Laura; Gherardi, Laureano; Sala, Osvaldo Esteban; Grasses have larger response than shrubs to increased nitrogen availability: A fertilization experiment in the Patagonian Steppe; Elsevier; Journal of Arid Environments; 102; 1-2014; 17-20 0140-1963 |
url |
http://hdl.handle.net/11336/4176 |
identifier_str_mv |
Yahdjian, María Laura; Gherardi, Laureano; Sala, Osvaldo Esteban; Grasses have larger response than shrubs to increased nitrogen availability: A fertilization experiment in the Patagonian Steppe; Elsevier; Journal of Arid Environments; 102; 1-2014; 17-20 0140-1963 |
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/S0140196313002097 info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jaridenv.2013.11.002 info:eu-repo/semantics/altIdentifier/issn/0140-1963 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-nd/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Elsevier |
publisher.none.fl_str_mv |
Elsevier |
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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1844614242028748800 |
score |
13.070432 |