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
- Institución
- Instituto Nacional de Tecnología Agropecuaria
- OAI Identificador
- oai:localhost:20.500.12123/11351
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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)2025-09-29T13:45:29Zoai: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:l2025-09-29 13:45:30.081INTA 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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1844619162680295424 |
score |
12.559606 |