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dc.contributor.author
Irisarri, Jorge Gonzalo Nicolás
dc.contributor.author
Oesterheld, Martin
dc.contributor.author
Golluscio, Rodolfo
dc.contributor.author
Paruelo, José
dc.date.available
2016-02-04T20:33:13Z
dc.date.issued
2014-02-26
dc.identifier.citation
Irisarri, Jorge Gonzalo Nicolás; Oesterheld, Martin; Golluscio, Rodolfo; Paruelo, José; Effects of animal husbandry on secondary production and trophic efficiency at a regional scale; Springer; Ecosystems; 17; 4; 26-2-2014; 738-749
dc.identifier.issn
1432-9840
dc.identifier.uri
http://hdl.handle.net/11336/4035
dc.description.abstract
Agricultural systems are expected to have higher net secondary production (NSP) than natural systems as a result of higher trophic efficiency and lower interannual variability. These differences, however, have not been quantified across regional gradients. We compiled a dataset of herbivore biomass, consumption, NSP, annual precipitation, and aboveground net primary production (ANPP) for extensive livestock farms across a wide precipitation gradient in Argentina. We compared these data with world-wide published studies of natural systems. In a double-logarithmic scale, NSP of agricultural systems increased with ANPP from semiarid to subhumid systems and decreased from subhumid to humid systems, a response that contrasted with the linear positive increase of natural systems. Compared to natural systems dominated by homeotherms, and in semiarid areas, agricultural systems Etroph (NSP:ANPP) was 8 times higher, due to a 2 times higher Econsump (Consumption:ANPP), and a 4 times higher Eprod (NSP:Consumption). In subhumid areas, Etroph was 46 times higher, due to a 13.7 times higher Econsump, and a 3.3 times higher Eprod. In humid areas, Etroph was 5 times higher, due to a 2.5 times higher Econsump, and a 2 times higher Eprod. The interannual variation of herbivore biomass, a major determinant of NSP, was 60% lower in agricultural than in natural systems dominated by homeotherms, and was decoupled from the variability of precipitation. Agricultural systems reaches higher NSP by (1) diverting a major proportion of ANPP from the detritus to the grazing chain, (2) converting more efficiently consumption into NSP, and (3) stabilizing herbivore biomass across years.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Springer
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Aboveground Net Primary Production
dc.subject
Herbivores
dc.subject
Poikilotherm
dc.subject
Homeotherm
dc.subject
Interannual Variation
dc.subject
Consumption
dc.subject.classification
Ciencias Medioambientales
dc.subject.classification
Ciencias de la Tierra y relacionadas con el Medio Ambiente
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.subject.classification
Ciencias de las Plantas, Botánica
dc.subject.classification
Ciencias Biológicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Effects of animal husbandry on secondary production and trophic efficiency at a regional scale
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2016-03-30 10:35:44.97925-03
dc.journal.volume
17
dc.journal.number
4
dc.journal.pagination
738-749
dc.journal.pais
Alemania
dc.journal.ciudad
Berlin
dc.description.fil
Fil: Irisarri, Jorge Gonzalo Nicolás. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura; Argentina
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; Argentina
dc.description.fil
Fil: Golluscio, Rodolfo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura; 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; Argentina
dc.journal.title
Ecosystems
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://link.springer.com/article/10.1007%2Fs10021-014-9756-6
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://dx.doi.org/10.1007/s10021-014-9756-6
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/issn/1432-9840


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  • Articulos(IFEVA) [505]
    Articulos de INST.D/INV.FISIOLOGICAS Y ECO.VINCULADAS A L/AGRIC

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