Registro completo de metadatos
| Campo DC | Valor | Lengua/Idioma |
|---|---|---|
| dc.creator | Marone, Luis | - |
| dc.creator | Olmedo, Matías | - |
| dc.creator | Valdés, Daniela Y. | - |
| dc.creator | Zarco, Agustín | - |
| dc.creator | Lopez de Casenave, Javier Nestor | - |
| dc.creator | Pol, Rodrigo Gabriel | - |
| dc.date | 2018-04-26T20:50:42Z | - |
| dc.date | 2018-04-26T20:50:42Z | - |
| dc.date | 2017-08 | - |
| dc.date | 2018-04-16T14:06:27Z | - |
| dc.date.accessioned | 2019-04-29T15:48:22Z | - |
| dc.date.available | 2019-04-29T15:48:22Z | - |
| dc.date.issued | 2017-08 | - |
| dc.identifier | Marone, Luis; Olmedo, Matías; Valdés, Daniela Y.; Zarco, Agustín; Lopez de Casenave, Javier Nestor; et al.; Diet switching of seed-eating birds wintering in grazed habitats of the central Monte Desert, Argentina; Cooper Ornithological Society; The Condor; 119; 4; 8-2017; 673-682 | - |
| dc.identifier | 0010-5422 | - |
| dc.identifier | http://hdl.handle.net/11336/43621 | - |
| dc.identifier | CONICET Digital | - |
| dc.identifier | CONICET | - |
| dc.identifier.uri | http://rodna.bn.gov.ar:8080/jspui/handle/bnmm/302527 | - |
| dc.description | Although bird population declines associated with land degradation are common, the initial response of organisms to rapid human-induced environmental change is usually behavioral. Reductions in seed availability due to cattle grazing may trigger diet switching in seed-eating birds, but empirical examples of such behavior are lacking. We asked whether cattle grazing changed the composition and reduced the size of seed reserves, and whether seed shortage caused diet shifts in 4 species of seed-eating birds wintering in the central Monte Desert, Argentina. We assessed the soil seed bank composition and the granivorous fraction of each species? diet. Digestive tract or crop contents were obtained by using the flushing method on individuals captured with mist nets, and seeds were sorted and assigned to 1 of 3 functional groups (small grass seeds, large and medium-sized grass seeds, or forb seeds). Cattle grazing reduced the abundance of the preferred large and medium-sized grass seeds by 60?90%. The grass-seed specialists Manycolored Chaco Finch (Saltatricula multicolor) and Ringed Warbling-Finch (Microspingus torquatus) did not change their diets in grazed areas, but the expanding specialists Common Diuca-Finch (Diuca diuca) and Rufous-collared Sparrow (Zonotrichia capensis) incorporated increased proportions of small grass seeds as well as forb seeds into their diets. These results were correctly predicted from species-specific differences in feeding flexibility previously established in cafeteria experiments. Based on species-specific diet composition, the energy reward of seeds by unit mass consumed decreased moderately (5?21%) in the grazed sites for S. multicolor, M. torquatus, and D. diuca. Starch content was similar between grazing conditions for all 3 birds. Although such deficits might be compensated for by a slight increase in absolute mass of seeds or alternative food items consumed in degraded lands, substantial reduction in the availability of grass seeds may reduce the capacity of degraded lands to support specialist granivorous birds. | - |
| dc.description | Fil: Marone, Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Investigaciones de las Zonas Áridas. Provincia de Mendoza. Instituto Argentino de Investigaciones de las Zonas Áridas. Universidad Nacional de Cuyo. Instituto Argentino de Investigaciones de las Zonas Áridas; Argentina | - |
| dc.description | Fil: Olmedo, Matías. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Investigaciones de las Zonas Áridas. Provincia de Mendoza. Instituto Argentino de Investigaciones de las Zonas Áridas. Universidad Nacional de Cuyo. Instituto Argentino de Investigaciones de las Zonas Áridas; Argentina | - |
| dc.description | Fil: Valdés, Daniela Y.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Investigaciones de las Zonas Áridas. Provincia de Mendoza. Instituto Argentino de Investigaciones de las Zonas Áridas. Universidad Nacional de Cuyo. Instituto Argentino de Investigaciones de las Zonas Áridas; Argentina | - |
| dc.description | Fil: Zarco, Agustín. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Investigaciones de las Zonas Áridas. Provincia de Mendoza. Instituto Argentino de Investigaciones de las Zonas Áridas. Universidad Nacional de Cuyo. Instituto Argentino de Investigaciones de las Zonas Áridas; Argentina | - |
| dc.description | Fil: Lopez de Casenave, Javier Nestor. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Ecología, Genética y Evolución de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Ecología, Genética y Evolución de Buenos Aires; Argentina | - |
| dc.description | Fil: Pol, Rodrigo Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Investigaciones de las Zonas Áridas. Provincia de Mendoza. Instituto Argentino de Investigaciones de las Zonas Áridas. Universidad Nacional de Cuyo. Instituto Argentino de Investigaciones de las Zonas Áridas; Argentina | - |
| dc.format | application/pdf | - |
| dc.format | application/pdf | - |
| dc.format | application/pdf | - |
| dc.format | application/pdf | - |
| dc.language | eng | - |
| dc.publisher | Cooper Ornithological Society | - |
| dc.relation | info:eu-repo/semantics/altIdentifier/url/http://www.bioone.org/doi/10.1650/CONDOR-17-61.1 | - |
| dc.relation | info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1650/CONDOR-17-61.1 | - |
| dc.rights | info:eu-repo/semantics/restrictedAccess | - |
| dc.rights | https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ | - |
| dc.source | reponame:CONICET Digital (CONICET) | - |
| dc.source | instname:Consejo Nacional de Investigaciones Científicas y Técnicas | - |
| dc.source | instacron:CONICET | - |
| dc.source.uri | http://hdl.handle.net/11336/69060 | - |
| dc.subject | FEEDING FLEXIBILITY | - |
| dc.subject | EXPANDING SPECIALISTS | - |
| dc.subject | SEED SHORTAGE | - |
| dc.subject | SEED PREFERENCES | - |
| dc.subject | FORB SEEDS | - |
| dc.subject | GRASS SEEDS | - |
| dc.subject | ENERGETICS | - |
| dc.subject | LAND DEGRADATION | - |
| dc.subject | Otras Ciencias Biológicas | - |
| dc.subject | Ciencias Biológicas | - |
| dc.subject | CIENCIAS NATURALES Y EXACTAS | - |
| dc.title | Diet switching of seed-eating birds wintering in grazed habitats of the central Monte Desert, Argentina | - |
| dc.title | Modificación de la dieta invernal de las aves granívoras en hábitats sujetos a pastoreo de la porción central del Desierto del Monte, Argentina | - |
| dc.type | info:eu-repo/semantics/article | - |
| dc.type | info:eu-repo/semantics/publishedVersion | - |
| dc.type | info:ar-repo/semantics/articulo | - |
| Aparece en las colecciones: | CONICET | |
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