Precipitation is the key determinant of topsoil δ15N values in southern Patagonia’s semiarid rangelands

Autores
Peri, Pablo Luis; Duarte Guardia, Sandra; Amelung, Wulf; Ladd, Brenton
Año de publicación
2022
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Nitrogen (N) cycling in rangeland soils could potentially be controlled by water supply, stocking rates, or a range of other variables, such as ecosystem N stocks. To gauge the relative importance and elucidate possible interactions among these factors, we measured many abiotic variables to identify first-order controls of δ15N for Patagonia’s rangeland soils under contrasting historical grazing intensities. The results showed that δ15N values declined as water availability increased. The effects of precipitation and stocking rate on soil δ15N values were additive, and the effect of precipitation far outweighed the effects of grazing pressure. The soil N stock was a weak predictive variable for modeling variation in δ15N of the soil. Earlier assumptions about an inflection point for N cycling and δ15N values related to aridity were not confirmed. We conclude that variation in water availability drives variation in δ15N values irrespective of grazing intensity. We also conclude that meaningful interpretation of δ15N in soil will require a better mechanistic understanding of the interactions between water and N in the vadose zone than we currently possess.
EEA Santa Cruz
Fil: Peri, Pablo Luis. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santa Cruz; Argentina.
Fil: Peri, Pablo Luis. Universidad Nacional de la Patagonia Austral; Argentina.
Fil: Peri, Pablo Luis. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.
Fil: Duarte Guardia, Sandra. Universidad Nacional de la Patagonia Austral; Argentina.
Fil: Duarte Guardia, Sandra. Instituto Nacional de Innovación Agraria (INIA). Laboratorio Nacional de Suelos, Aguas y Foliares-LABSAF; Perú.
Fil: Amelung, Wulf. University of Bonn. Institute of Crop Science and Resource Conservation (INRES). Soil Science and Soil Ecology; Alemania
Fil: Ladd, Brenton. Universidad Científica del Sur. Escuela de Agroforestería; Perú.
Fuente
Vadose Zone Journal 21: e20183. (First published: 11 February 2022)
Materia
Nitrogen
Precipitation
Soil
Rangelands
Semiarid Zones
Abiotic Factors
Water Availability
Grazing Intensity
Interactions
Shrubs
Nitrógeno
Precipitación Atmosférica
Suelo
Tierras de Pastos
Zona Semiárida
Factores Abióticos
Disponibilidad del Agua
Intensidad de Pastoreo
Interacciones
Santa Cruz (Argentina)
Arbustos
PEBANPA Network
Tussock
Short grasses
Red PEBANPA
Región Patagónica
Pasto
Pastos Cortos
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
INTA Digital (INTA)
Institución
Instituto Nacional de Tecnología Agropecuaria
OAI Identificador
oai:localhost:20.500.12123/11351
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oai_identifier_str oai:localhost:20.500.12123/11351
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network_name_str INTA Digital (INTA)
spelling Precipitation is the key determinant of topsoil δ15N values in southern Patagonia’s semiarid rangelandsPeri, Pablo LuisDuarte Guardia, SandraAmelung, WulfLadd, BrentonNitrogenPrecipitationSoilRangelandsSemiarid ZonesAbiotic FactorsWater AvailabilityGrazing IntensityInteractionsShrubsNitrógenoPrecipitación AtmosféricaSueloTierras de PastosZona SemiáridaFactores AbióticosDisponibilidad del AguaIntensidad de PastoreoInteraccionesSanta Cruz (Argentina)ArbustosPEBANPA NetworkTussockShort grassesRed PEBANPARegión PatagónicaPastoPastos CortosNitrogen (N) cycling in rangeland soils could potentially be controlled by water supply, stocking rates, or a range of other variables, such as ecosystem N stocks. To gauge the relative importance and elucidate possible interactions among these factors, we measured many abiotic variables to identify first-order controls of δ15N for Patagonia’s rangeland soils under contrasting historical grazing intensities. The results showed that δ15N values declined as water availability increased. The effects of precipitation and stocking rate on soil δ15N values were additive, and the effect of precipitation far outweighed the effects of grazing pressure. The soil N stock was a weak predictive variable for modeling variation in δ15N of the soil. Earlier assumptions about an inflection point for N cycling and δ15N values related to aridity were not confirmed. We conclude that variation in water availability drives variation in δ15N values irrespective of grazing intensity. We also conclude that meaningful interpretation of δ15N in soil will require a better mechanistic understanding of the interactions between water and N in the vadose zone than we currently possess.EEA Santa CruzFil: Peri, Pablo Luis. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santa Cruz; Argentina.Fil: Peri, Pablo Luis. Universidad Nacional de la Patagonia Austral; Argentina.Fil: Peri, Pablo Luis. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.Fil: Duarte Guardia, Sandra. Universidad Nacional de la Patagonia Austral; Argentina.Fil: Duarte Guardia, Sandra. Instituto Nacional de Innovación Agraria (INIA). Laboratorio Nacional de Suelos, Aguas y Foliares-LABSAF; Perú.Fil: Amelung, Wulf. University of Bonn. Institute of Crop Science and Resource Conservation (INRES). Soil Science and Soil Ecology; AlemaniaFil: Ladd, Brenton. Universidad Científica del Sur. Escuela de Agroforestería; Perú.American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America2022-03-09T13:34:43Z2022-03-09T13:34:43Z2022-02-11info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://hdl.handle.net/20.500.12123/11351https://acsess.onlinelibrary.wiley.com/doi/full/10.1002/vzj2.20183Peri P.L.; Duarte-Guardia S.; Amelung W.; Ladd B. (2022) Precipitation is the key determinant of topsoil δ15N values in southern Patagonia’s semiarid rangelands. Vadose Zone Journal 21: e20183. DOI: 10.1002/vzj2.20183.1539-1663https://doi.org/10.1002/vzj2.20183Vadose Zone Journal 21: e20183. (First published: 11 February 2022)reponame:INTA Digital (INTA)instname:Instituto Nacional de Tecnología Agropecuariaenginfo:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)2025-10-16T09:30:26Zoai:localhost:20.500.12123/11351instacron:INTAInstitucionalhttp://repositorio.inta.gob.ar/Organismo científico-tecnológicoNo correspondehttp://repositorio.inta.gob.ar/oai/requesttripaldi.nicolas@inta.gob.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:l2025-10-16 09:30:27.741INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuariafalse
dc.title.none.fl_str_mv Precipitation is the key determinant of topsoil δ15N values in southern Patagonia’s semiarid rangelands
title Precipitation is the key determinant of topsoil δ15N values in southern Patagonia’s semiarid rangelands
spellingShingle Precipitation is the key determinant of topsoil δ15N values in southern Patagonia’s semiarid rangelands
Peri, Pablo Luis
Nitrogen
Precipitation
Soil
Rangelands
Semiarid Zones
Abiotic Factors
Water Availability
Grazing Intensity
Interactions
Shrubs
Nitrógeno
Precipitación Atmosférica
Suelo
Tierras de Pastos
Zona Semiárida
Factores Abióticos
Disponibilidad del Agua
Intensidad de Pastoreo
Interacciones
Santa Cruz (Argentina)
Arbustos
PEBANPA Network
Tussock
Short grasses
Red PEBANPA
Región Patagónica
Pasto
Pastos Cortos
title_short Precipitation is the key determinant of topsoil δ15N values in southern Patagonia’s semiarid rangelands
title_full Precipitation is the key determinant of topsoil δ15N values in southern Patagonia’s semiarid rangelands
title_fullStr Precipitation is the key determinant of topsoil δ15N values in southern Patagonia’s semiarid rangelands
title_full_unstemmed Precipitation is the key determinant of topsoil δ15N values in southern Patagonia’s semiarid rangelands
title_sort Precipitation is the key determinant of topsoil δ15N values in southern Patagonia’s semiarid rangelands
dc.creator.none.fl_str_mv Peri, Pablo Luis
Duarte Guardia, Sandra
Amelung, Wulf
Ladd, Brenton
author Peri, Pablo Luis
author_facet Peri, Pablo Luis
Duarte Guardia, Sandra
Amelung, Wulf
Ladd, Brenton
author_role author
author2 Duarte Guardia, Sandra
Amelung, Wulf
Ladd, Brenton
author2_role author
author
author
dc.subject.none.fl_str_mv Nitrogen
Precipitation
Soil
Rangelands
Semiarid Zones
Abiotic Factors
Water Availability
Grazing Intensity
Interactions
Shrubs
Nitrógeno
Precipitación Atmosférica
Suelo
Tierras de Pastos
Zona Semiárida
Factores Abióticos
Disponibilidad del Agua
Intensidad de Pastoreo
Interacciones
Santa Cruz (Argentina)
Arbustos
PEBANPA Network
Tussock
Short grasses
Red PEBANPA
Región Patagónica
Pasto
Pastos Cortos
topic Nitrogen
Precipitation
Soil
Rangelands
Semiarid Zones
Abiotic Factors
Water Availability
Grazing Intensity
Interactions
Shrubs
Nitrógeno
Precipitación Atmosférica
Suelo
Tierras de Pastos
Zona Semiárida
Factores Abióticos
Disponibilidad del Agua
Intensidad de Pastoreo
Interacciones
Santa Cruz (Argentina)
Arbustos
PEBANPA Network
Tussock
Short grasses
Red PEBANPA
Región Patagónica
Pasto
Pastos Cortos
dc.description.none.fl_txt_mv Nitrogen (N) cycling in rangeland soils could potentially be controlled by water supply, stocking rates, or a range of other variables, such as ecosystem N stocks. To gauge the relative importance and elucidate possible interactions among these factors, we measured many abiotic variables to identify first-order controls of δ15N for Patagonia’s rangeland soils under contrasting historical grazing intensities. The results showed that δ15N values declined as water availability increased. The effects of precipitation and stocking rate on soil δ15N values were additive, and the effect of precipitation far outweighed the effects of grazing pressure. The soil N stock was a weak predictive variable for modeling variation in δ15N of the soil. Earlier assumptions about an inflection point for N cycling and δ15N values related to aridity were not confirmed. We conclude that variation in water availability drives variation in δ15N values irrespective of grazing intensity. We also conclude that meaningful interpretation of δ15N in soil will require a better mechanistic understanding of the interactions between water and N in the vadose zone than we currently possess.
EEA Santa Cruz
Fil: Peri, Pablo Luis. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santa Cruz; Argentina.
Fil: Peri, Pablo Luis. Universidad Nacional de la Patagonia Austral; Argentina.
Fil: Peri, Pablo Luis. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.
Fil: Duarte Guardia, Sandra. Universidad Nacional de la Patagonia Austral; Argentina.
Fil: Duarte Guardia, Sandra. Instituto Nacional de Innovación Agraria (INIA). Laboratorio Nacional de Suelos, Aguas y Foliares-LABSAF; Perú.
Fil: Amelung, Wulf. University of Bonn. Institute of Crop Science and Resource Conservation (INRES). Soil Science and Soil Ecology; Alemania
Fil: Ladd, Brenton. Universidad Científica del Sur. Escuela de Agroforestería; Perú.
description Nitrogen (N) cycling in rangeland soils could potentially be controlled by water supply, stocking rates, or a range of other variables, such as ecosystem N stocks. To gauge the relative importance and elucidate possible interactions among these factors, we measured many abiotic variables to identify first-order controls of δ15N for Patagonia’s rangeland soils under contrasting historical grazing intensities. The results showed that δ15N values declined as water availability increased. The effects of precipitation and stocking rate on soil δ15N values were additive, and the effect of precipitation far outweighed the effects of grazing pressure. The soil N stock was a weak predictive variable for modeling variation in δ15N of the soil. Earlier assumptions about an inflection point for N cycling and δ15N values related to aridity were not confirmed. We conclude that variation in water availability drives variation in δ15N values irrespective of grazing intensity. We also conclude that meaningful interpretation of δ15N in soil will require a better mechanistic understanding of the interactions between water and N in the vadose zone than we currently possess.
publishDate 2022
dc.date.none.fl_str_mv 2022-03-09T13:34:43Z
2022-03-09T13:34:43Z
2022-02-11
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/20.500.12123/11351
https://acsess.onlinelibrary.wiley.com/doi/full/10.1002/vzj2.20183
Peri P.L.; Duarte-Guardia S.; Amelung W.; Ladd B. (2022) Precipitation is the key determinant of topsoil δ15N values in southern Patagonia’s semiarid rangelands. Vadose Zone Journal 21: e20183. DOI: 10.1002/vzj2.20183.
1539-1663
https://doi.org/10.1002/vzj2.20183
url http://hdl.handle.net/20.500.12123/11351
https://acsess.onlinelibrary.wiley.com/doi/full/10.1002/vzj2.20183
https://doi.org/10.1002/vzj2.20183
identifier_str_mv Peri P.L.; Duarte-Guardia S.; Amelung W.; Ladd B. (2022) Precipitation is the key determinant of topsoil δ15N values in southern Patagonia’s semiarid rangelands. Vadose Zone Journal 21: e20183. DOI: 10.1002/vzj2.20183.
1539-1663
dc.language.none.fl_str_mv eng
language eng
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America
publisher.none.fl_str_mv American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America
dc.source.none.fl_str_mv Vadose Zone Journal 21: e20183. (First published: 11 February 2022)
reponame:INTA Digital (INTA)
instname:Instituto Nacional de Tecnología Agropecuaria
reponame_str INTA Digital (INTA)
collection INTA Digital (INTA)
instname_str Instituto Nacional de Tecnología Agropecuaria
repository.name.fl_str_mv INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuaria
repository.mail.fl_str_mv tripaldi.nicolas@inta.gob.ar
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score 12.712165

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