Grass-shrub coexistence: understanding root distribution in ecological sites of the Semiarid Chaco, Argentina
- Autores
- Ledesma, Roxana Ramona; Bravo, Sandra; Kunst, Carlos Roberto; Elías, Antonio; Godoy, Jose Alberto; Navarrete, Victor Del Carmen
- Año de publicación
- 2021
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- The objective of this study was to analyze the root distribution of grasses and shrubs, at different soil depths, in two ecological sites (ES): highland (forest) and lowland (grassland). The root density (RD) estimation was used as a proxy to test the two-layer hypothesis. Three trenches were dug in both ES and the number of roots m−2 was registered at different depth classes. The roots were classified in categories: (a) life forms (LF), grasses and shrubs and (b) root size (diameter): fine (<0.1 cm), small (0.11–0.5 cm); medium (0.51–1.5 cm) and large (>1.51 cm). Soil bulk density (Bd) was assessed by gravimetric method and its relation with RD was determined by regression analysis. RD was analyzed by using ANOVA with the factors: ES, LF, depth and root size. There were no significant differences in RD between the ES but RD significantly decreased with depth in both ES. In the upper horizons of the forest, there was higher shrubs RD (764 roots m2) than grass RD (128 roots m2) (p < 0.0001). In grassland, grass RD was registered in all the depths. Mean fine root density was greater than the mean of other root size categories. The relationship between RD and Bd was negative and only significant in the forest (p = 0.009). The distribution of roots of both LF in the soil profile of both ES did not respond completely to the two-layer hypothesis since in upper horizons an overlap was observed.
EEA Santiago del Estero
Fil: Ledesma, Roxana Ramona. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santiago del Estero; Argentina
Fil: Bravo, Sandra. Universidad Nacional de Santiago del Estero. Facultad de Ciencias Forestales; Argentina
Fil: Kunst, Carlos Roberto. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santiago del Estero; Argentina
Fil: Elías, Antonio. Universidad Nacional de Santiago del Estero. Facultad de Agronomía y Agroindustrias; Argentina
Fil: Godoy, Jose Alberto. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santiago del Estero; Argentina
Fil: Navarrete, Victor Del Carmen. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santiago del Estero; Argentina - Fuente
- Arid Land Research and Management : 1-13 ( Published online: 28 Dec 2021)
- Materia
-
Gramineas
Arbustos
Raíces
Ecología
Grasses
Shrubs
Roots
Ecology
Región Chaco Semiárido - Nivel de accesibilidad
- acceso restringido
- Condiciones de uso
- Repositorio
- Institución
- Instituto Nacional de Tecnología Agropecuaria
- OAI Identificador
- oai:localhost:20.500.12123/11559
Ver los metadatos del registro completo
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Grass-shrub coexistence: understanding root distribution in ecological sites of the Semiarid Chaco, ArgentinaLedesma, Roxana RamonaBravo, SandraKunst, Carlos RobertoElías, AntonioGodoy, Jose AlbertoNavarrete, Victor Del CarmenGramineasArbustosRaícesEcologíaGrassesShrubsRootsEcologyRegión Chaco SemiáridoThe objective of this study was to analyze the root distribution of grasses and shrubs, at different soil depths, in two ecological sites (ES): highland (forest) and lowland (grassland). The root density (RD) estimation was used as a proxy to test the two-layer hypothesis. Three trenches were dug in both ES and the number of roots m−2 was registered at different depth classes. The roots were classified in categories: (a) life forms (LF), grasses and shrubs and (b) root size (diameter): fine (<0.1 cm), small (0.11–0.5 cm); medium (0.51–1.5 cm) and large (>1.51 cm). Soil bulk density (Bd) was assessed by gravimetric method and its relation with RD was determined by regression analysis. RD was analyzed by using ANOVA with the factors: ES, LF, depth and root size. There were no significant differences in RD between the ES but RD significantly decreased with depth in both ES. In the upper horizons of the forest, there was higher shrubs RD (764 roots m2) than grass RD (128 roots m2) (p < 0.0001). In grassland, grass RD was registered in all the depths. Mean fine root density was greater than the mean of other root size categories. The relationship between RD and Bd was negative and only significant in the forest (p = 0.009). The distribution of roots of both LF in the soil profile of both ES did not respond completely to the two-layer hypothesis since in upper horizons an overlap was observed.EEA Santiago del EsteroFil: Ledesma, Roxana Ramona. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santiago del Estero; ArgentinaFil: Bravo, Sandra. Universidad Nacional de Santiago del Estero. Facultad de Ciencias Forestales; ArgentinaFil: Kunst, Carlos Roberto. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santiago del Estero; ArgentinaFil: Elías, Antonio. Universidad Nacional de Santiago del Estero. Facultad de Agronomía y Agroindustrias; ArgentinaFil: Godoy, Jose Alberto. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santiago del Estero; ArgentinaFil: Navarrete, Victor Del Carmen. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santiago del Estero; ArgentinaTaylor & Francis2022-04-05T13:18:59Z2022-04-05T13:18:59Z2021-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://hdl.handle.net/20.500.12123/11559https://www.tandfonline.com/doi/abs/10.1080/15324982.2021.20170741532-49821532-4990https://doi.org/10.1080/15324982.2021.2017074Arid Land Research and Management : 1-13 ( Published online: 28 Dec 2021)reponame:INTA Digital (INTA)instname:Instituto Nacional de Tecnología Agropecuariaenginfo:eu-repograntAgreement/INTA/2019-PE-E1-I504-001/2019-PE-E1-I504-001/AR./Tecnologías para el incremento forrajero y la valorización de servicios ecosistémicos en pastizales naturales con uso ganaderoinfo:eu-repograntAgreement/INTA/2019-PE-E1-I514-001/2019-PE-E1-I514-001/AR./Manejo de Bosques con Ganadería Integrada (MBGI)info:eu-repo/semantics/restrictedAccess2025-09-29T13:45:31Zoai:localhost:20.500.12123/11559instacron: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 13:45:31.646INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuariafalse |
dc.title.none.fl_str_mv |
Grass-shrub coexistence: understanding root distribution in ecological sites of the Semiarid Chaco, Argentina |
title |
Grass-shrub coexistence: understanding root distribution in ecological sites of the Semiarid Chaco, Argentina |
spellingShingle |
Grass-shrub coexistence: understanding root distribution in ecological sites of the Semiarid Chaco, Argentina Ledesma, Roxana Ramona Gramineas Arbustos Raíces Ecología Grasses Shrubs Roots Ecology Región Chaco Semiárido |
title_short |
Grass-shrub coexistence: understanding root distribution in ecological sites of the Semiarid Chaco, Argentina |
title_full |
Grass-shrub coexistence: understanding root distribution in ecological sites of the Semiarid Chaco, Argentina |
title_fullStr |
Grass-shrub coexistence: understanding root distribution in ecological sites of the Semiarid Chaco, Argentina |
title_full_unstemmed |
Grass-shrub coexistence: understanding root distribution in ecological sites of the Semiarid Chaco, Argentina |
title_sort |
Grass-shrub coexistence: understanding root distribution in ecological sites of the Semiarid Chaco, Argentina |
dc.creator.none.fl_str_mv |
Ledesma, Roxana Ramona Bravo, Sandra Kunst, Carlos Roberto Elías, Antonio Godoy, Jose Alberto Navarrete, Victor Del Carmen |
author |
Ledesma, Roxana Ramona |
author_facet |
Ledesma, Roxana Ramona Bravo, Sandra Kunst, Carlos Roberto Elías, Antonio Godoy, Jose Alberto Navarrete, Victor Del Carmen |
author_role |
author |
author2 |
Bravo, Sandra Kunst, Carlos Roberto Elías, Antonio Godoy, Jose Alberto Navarrete, Victor Del Carmen |
author2_role |
author author author author author |
dc.subject.none.fl_str_mv |
Gramineas Arbustos Raíces Ecología Grasses Shrubs Roots Ecology Región Chaco Semiárido |
topic |
Gramineas Arbustos Raíces Ecología Grasses Shrubs Roots Ecology Región Chaco Semiárido |
dc.description.none.fl_txt_mv |
The objective of this study was to analyze the root distribution of grasses and shrubs, at different soil depths, in two ecological sites (ES): highland (forest) and lowland (grassland). The root density (RD) estimation was used as a proxy to test the two-layer hypothesis. Three trenches were dug in both ES and the number of roots m−2 was registered at different depth classes. The roots were classified in categories: (a) life forms (LF), grasses and shrubs and (b) root size (diameter): fine (<0.1 cm), small (0.11–0.5 cm); medium (0.51–1.5 cm) and large (>1.51 cm). Soil bulk density (Bd) was assessed by gravimetric method and its relation with RD was determined by regression analysis. RD was analyzed by using ANOVA with the factors: ES, LF, depth and root size. There were no significant differences in RD between the ES but RD significantly decreased with depth in both ES. In the upper horizons of the forest, there was higher shrubs RD (764 roots m2) than grass RD (128 roots m2) (p < 0.0001). In grassland, grass RD was registered in all the depths. Mean fine root density was greater than the mean of other root size categories. The relationship between RD and Bd was negative and only significant in the forest (p = 0.009). The distribution of roots of both LF in the soil profile of both ES did not respond completely to the two-layer hypothesis since in upper horizons an overlap was observed. EEA Santiago del Estero Fil: Ledesma, Roxana Ramona. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santiago del Estero; Argentina Fil: Bravo, Sandra. Universidad Nacional de Santiago del Estero. Facultad de Ciencias Forestales; Argentina Fil: Kunst, Carlos Roberto. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santiago del Estero; Argentina Fil: Elías, Antonio. Universidad Nacional de Santiago del Estero. Facultad de Agronomía y Agroindustrias; Argentina Fil: Godoy, Jose Alberto. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santiago del Estero; Argentina Fil: Navarrete, Victor Del Carmen. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santiago del Estero; Argentina |
description |
The objective of this study was to analyze the root distribution of grasses and shrubs, at different soil depths, in two ecological sites (ES): highland (forest) and lowland (grassland). The root density (RD) estimation was used as a proxy to test the two-layer hypothesis. Three trenches were dug in both ES and the number of roots m−2 was registered at different depth classes. The roots were classified in categories: (a) life forms (LF), grasses and shrubs and (b) root size (diameter): fine (<0.1 cm), small (0.11–0.5 cm); medium (0.51–1.5 cm) and large (>1.51 cm). Soil bulk density (Bd) was assessed by gravimetric method and its relation with RD was determined by regression analysis. RD was analyzed by using ANOVA with the factors: ES, LF, depth and root size. There were no significant differences in RD between the ES but RD significantly decreased with depth in both ES. In the upper horizons of the forest, there was higher shrubs RD (764 roots m2) than grass RD (128 roots m2) (p < 0.0001). In grassland, grass RD was registered in all the depths. Mean fine root density was greater than the mean of other root size categories. The relationship between RD and Bd was negative and only significant in the forest (p = 0.009). The distribution of roots of both LF in the soil profile of both ES did not respond completely to the two-layer hypothesis since in upper horizons an overlap was observed. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-12 2022-04-05T13:18:59Z 2022-04-05T13:18:59Z |
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/20.500.12123/11559 https://www.tandfonline.com/doi/abs/10.1080/15324982.2021.2017074 1532-4982 1532-4990 https://doi.org/10.1080/15324982.2021.2017074 |
url |
http://hdl.handle.net/20.500.12123/11559 https://www.tandfonline.com/doi/abs/10.1080/15324982.2021.2017074 https://doi.org/10.1080/15324982.2021.2017074 |
identifier_str_mv |
1532-4982 1532-4990 |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repograntAgreement/INTA/2019-PE-E1-I504-001/2019-PE-E1-I504-001/AR./Tecnologías para el incremento forrajero y la valorización de servicios ecosistémicos en pastizales naturales con uso ganadero info:eu-repograntAgreement/INTA/2019-PE-E1-I514-001/2019-PE-E1-I514-001/AR./Manejo de Bosques con Ganadería Integrada (MBGI) |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/restrictedAccess |
eu_rights_str_mv |
restrictedAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Taylor & Francis |
publisher.none.fl_str_mv |
Taylor & Francis |
dc.source.none.fl_str_mv |
Arid Land Research and Management : 1-13 ( Published online: 28 Dec 2021) reponame:INTA Digital (INTA) instname:Instituto Nacional de Tecnología Agropecuaria |
reponame_str |
INTA Digital (INTA) |
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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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1844619163346141184 |
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12.559606 |