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dc.contributor.author
Blanco, Lisandro Javier
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dc.contributor.author
Paruelo, José
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dc.contributor.author
Oesterheld, Martin
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dc.contributor.author
Agüero, Walter Damián
dc.date.available
2023-10-10T18:14:13Z
dc.date.issued
2022-03
dc.identifier.citation
Blanco, Lisandro Javier; Paruelo, José; Oesterheld, Martin; Agüero, Walter Damián; Radiation use efficiency of the herbaceous layer of dry Chaco shrublands and woodlands: Spatial and temporal patterns; Wiley Blackwell Publishing, Inc; Applied Vegetation Science; 25; 1; 3-2022; 1-14
dc.identifier.issn
1402-2001
dc.identifier.uri
http://hdl.handle.net/11336/214760
dc.description.abstract
Aims: Monitoring rangeland above-ground net primary production (ANPP) requires information on the variation of radiation use efficiency (RUE). We studied the spatial and temporal variations of RUE of the herbaceous layer (RUEH) in woodlands and shrublands and its association with grazing regime, environmental, and vegetation variables. Location: We worked in the Arid Chaco (Argentina), an ecotone region between the Chaco and Monte phytogeographic provinces. Woody and herbaceous species coexist in variable proportions in relation to a regional precipitation gradient and local edaphic variations. Methods and results: Over eight growing seasons, we estimated RUEH at 12 sites, each with two contrasting grazing regimes (moderate and severe). To do this, we related estimated ANPPH from biomass harvests and APARH (absorbed photosynthetically active radiation of the herbaceous layer) calculated from the MODIS normalized difference vegetation index (NDVI). Then we linked the RUEH with precipitation, physiognomy, soil, and landscape data. Most of the spatial variability of RUEH was accounted for by the grazing regime. Moderately grazed areas had a three times greater RUEH than severely grazed ones (0.507 and 0.180 g MJ−1 respectively). They also exhibited different proportions of herbaceous functional types. Physiognomic characteristics of the woody layer explained a significant proportion of the spatial variation of RUEH not explained by grazing regime. RUEH was between 30 and 150% greater in woodlands than in shrublands depending on whether the sites were under moderate or severe grazing respectively. Conclusion: Grazing regime and woody physiognomy accounted for most of the variation in herbaceous radiation use efficiency. Our results show that RUEH may be predicted with greater accuracy from a combination of vegetation maps and information on grazing regime. Thus, our models could be incorporated into web platforms that provide ANPPH (forage) monitoring services based on satellite data, in order to improve their estimates in woodlands, shrublands and savanna ecosystems.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Wiley Blackwell Publishing, Inc
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dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
ARIDITY
dc.subject
GRASS FORAGE
dc.subject
GRAZING
dc.subject
NDVI
dc.subject
PRIMARY PRODUCTION
dc.subject
REMOTE SENSING
dc.subject
SATELLITE MONITORING
dc.subject
WOODY ECOSYSTEM
dc.subject.classification
Ganadería
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dc.subject.classification
Producción Animal y Lechería
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dc.subject.classification
CIENCIAS AGRÍCOLAS
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dc.title
Radiation use efficiency of the herbaceous layer of dry Chaco shrublands and woodlands: Spatial and temporal patterns
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2023-07-28T10:28:49Z
dc.journal.volume
25
dc.journal.number
1
dc.journal.pagination
1-14
dc.journal.pais
Reino Unido
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dc.journal.ciudad
Londres
dc.description.fil
Fil: Blanco, Lisandro Javier. Instituto Nacional de Tecnologia Agropecuaria. Centro Regional Catamarca-la Rioja. Estacion Experimental Agropecuaria la Rioja. Agencia de Extension Rural Chamical.; Argentina
dc.description.fil
Fil: Paruelo, José. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura; Argentina. Instituto Nacional de Investigacion Agropecuaria;
dc.description.fil
Fil: Oesterheld, Martin. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura; Argentina
dc.description.fil
Fil: Agüero, Walter Damián. Instituto Nacional de Tecnologia Agropecuaria. Centro Regional Catamarca-la Rioja. Estacion Experimental Agropecuaria la Rioja. Agencia de Extension Rural Chamical.; Argentina
dc.journal.title
Applied Vegetation Science
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/10.1111/avsc.12653
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1111/avsc.12653
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