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 | Acceso al texto completo restringido a Biblioteca INIA La Estanzuela. Por información adicional contacte bib_le@inia.org.uy. |
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Registro completo
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Biblioteca (s) : |
INIA La Estanzuela. |
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Fecha : |
08/09/2022 |
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Actualizado : |
08/09/2022 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Autor : |
ZARZA, R.; CAL, A.; FORMOSO, D.; MEDINA, S.; REY, D.; CARRASCO-LETELIER, L. |
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Afiliación : |
RODRIGO TABARE ZARZA FUENTES, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; ADRIAN TABARE CAL ALVAREZ, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; DANIEL FORMOSO, Private Consultor, Uruguay.; SANTIAGO MEDINA, Ministerio de Ordenamiento Territorial y Medio Ambiente, Dirección Nacional de Medio Ambiente, Galicia 1133, Montevideo, Uruguay.; DINORAH MABEL REY PEREZ, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; LEONIDAS CARRASCO-LETELIER, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
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Título : |
First delimitation and land-use assessment of the riparian zones at Uruguayan Pampa. |
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Fecha de publicación : |
2022 |
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Fuente / Imprenta : |
Ecological Informatics, November 2022, Volume 71, 101781. doi: https://doi.org/10.1016/j.ecoinf.2022.101781 |
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DOI : |
10.1016/j.ecoinf.2022.101781 |
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Idioma : |
Inglés |
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Notas : |
Article history: Received 4 May 2022, Revised 16 July 2022; Accepted 17 August 2022; Available online 25 August 2022; Version of Record 7 September 2022.
Supplementary data to this article can be found online at https://doi.org/10.1016/j.ecoinf.2022.101781. |
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Contenido : |
ABSTRACT: The expansion and intensification of agriculture frequently affect riparian zones, mainly in basins where agriculture is the most important activity. In countries with basins dominated by agricultural activities, land use change in riparian zones promotes water quality loss and biodiversity degradation. As a tool to prevent these environmental impacts, the delimitation of riparian zones and buffer strips is crucial. For that purpose, photo interpretation jobs and botanical studies are usually necessary. However, a digital terrain model (DTM) becomes the best alternative when the information is unavailable or the survey area is too large. This work made the first delimitation of riparian zones of the country?s water drainage network. The results obtained by using a 1-m vertical buffer in DTM allowed the delimitation of the riparian zones of Uruguay. The results indicate that of the areas identified as riparian, 62% would be authentic and that the 29% of riparian areas identified under cultivation could rise to 46% if the identification improved the identification accuracy. The results indicate the existence of 4,608,890 ha of riparian zones, of which 94,651 ha could be under cultivation. |
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Palabras claves : |
CROP ROTATIONS; DTM; FLOODING ZONE; PAMPA BIOME; RIVERS; SUSTENTABILIDAD AMBIENTAL. |
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Asunto categoría : |
P01 Conservación de la naturaleza y recursos de La tierra |
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Marc : |
LEADER 02288naa a2200277 a 4500
001 1063565
005 2022-09-08
008 2022 bl uuuu u00u1 u #d
024 7 $a10.1016/j.ecoinf.2022.101781$2DOI
100 1 $aZARZA, R.
245 $aFirst delimitation and land-use assessment of the riparian zones at Uruguayan Pampa.$h[electronic resource]
260 $c2022
500 $aArticle history: Received 4 May 2022, Revised 16 July 2022; Accepted 17 August 2022; Available online 25 August 2022; Version of Record 7 September 2022. Supplementary data to this article can be found online at https://doi.org/10.1016/j.ecoinf.2022.101781.
520 $aABSTRACT: The expansion and intensification of agriculture frequently affect riparian zones, mainly in basins where agriculture is the most important activity. In countries with basins dominated by agricultural activities, land use change in riparian zones promotes water quality loss and biodiversity degradation. As a tool to prevent these environmental impacts, the delimitation of riparian zones and buffer strips is crucial. For that purpose, photo interpretation jobs and botanical studies are usually necessary. However, a digital terrain model (DTM) becomes the best alternative when the information is unavailable or the survey area is too large. This work made the first delimitation of riparian zones of the country?s water drainage network. The results obtained by using a 1-m vertical buffer in DTM allowed the delimitation of the riparian zones of Uruguay. The results indicate that of the areas identified as riparian, 62% would be authentic and that the 29% of riparian areas identified under cultivation could rise to 46% if the identification improved the identification accuracy. The results indicate the existence of 4,608,890 ha of riparian zones, of which 94,651 ha could be under cultivation.
653 $aCROP ROTATIONS
653 $aDTM
653 $aFLOODING ZONE
653 $aPAMPA BIOME
653 $aRIVERS
653 $aSUSTENTABILIDAD AMBIENTAL
700 1 $aCAL, A.
700 1 $aFORMOSO, D.
700 1 $aMEDINA, S.
700 1 $aREY, D.
700 1 $aCARRASCO-LETELIER, L.
773 $tEcological Informatics, November 2022, Volume 71, 101781. doi: https://doi.org/10.1016/j.ecoinf.2022.101781
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INIA La Estanzuela (LE) |
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| Acceso al texto completo restringido a Biblioteca INIA Tacuarembó. Por información adicional contacte bibliotb@tb.inia.org.uy. |
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Registro completo
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Biblioteca (s) : |
INIA Tacuarembó; INIA Treinta y Tres. |
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Fecha actual : |
02/02/2016 |
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Actualizado : |
10/10/2019 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Circulación / Nivel : |
Internacional - -- |
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Autor : |
JAURENA, M.; LEZAMA, F.; SALVO, L.; CARDOZO, G.; AYALA, W.; TERRA, J.A.; NABINGER, C. |
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Afiliación : |
MARTIN ALEJANDRO JAURENA BARRIOS, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; FELIPE LEZAMA, Facultad de Agronomía, UDELAR, UY.; LUCÍA SALVO, Facultad de Agronomía, UDELAR, UY.; GERONIMO AGUSTIN CARDOZO CABANELAS, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; WALTER FELIZARDO AYALA SILVERA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; JOSÉ ALFREDO TERRA FERNÁNDEZ, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; CARLOS NABINGER, UNIVERSIDADE FEDERAL DE RÍO GRANDE DO SUL, PORTO ALEGRE, RS, BRASIL. |
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Título : |
The dilemma of improving native grasslands by overseeding legumes: production intensification or diversity conservation. |
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Fecha de publicación : |
2016 |
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Fuente / Imprenta : |
Rangeland Ecology & Management, 2016, v. 69, no. 1 p. 35-42. |
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ISSN : |
1550-7424 |
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DOI : |
10.1016/j.rama.2015.10.006 |
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Idioma : |
Inglés |
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Notas : |
Article history: Received 25 November 2014; Accepted 23 September 2015. |
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Contenido : |
In native campos of Uruguay, overseeding legumes coupled with phosphorus (P) fertilization is a technology used to increase animal production. Short-termimprovements in both forage productivity and quality are repeatedly reported. However, some evidence suggests that this management may at times lead to the collapse of the native community and invasions by exotic species. Indeed, it is yet unclear to what extent overseeding legumes into native grasslands affects its long-term integrity. This study uses data from a long-term experiment to assess whether increased P fertilizer rates?typically used to encourage legume establishment and growth?are associated with reduced species diversity. In 1996 a grazed native grassland in eastern Uruguay was either left untouched (control) or overseeded with a mix of Trifolium repens and Lotus corniculatus and then fertilized at either a moderate or high rate of P (197 or 394 kg · ha?1 over 13 years, respectively). The three treatments were arranged in a randomized block design with four replicates of 2 hectares each. In 2005 the experiment was exhaustively sampled: 11 georeferenced sampling points per replicate, each encompassing ~20m2. Extractable Pwasmeasured in the 0?5- and 5?15-cmsoil layers. In 2009, species presence and cover weremeasured at the same points. Across treatments,wherever legumes were introduced, extractable soil Pwas negatively related to species richness and diversity (P b 0.01) and native grass cover was reduced. This effect became asymptotic once soil P exceeded 27 and 36 mg · kg?1 of P (0?5 cm), respectively. Therefore the documented reduction in species richness and diversity suggests a trade-off between increased pasture production and decreased vegetation stability may be operating in response to P fertilization of overseeded grasslands. The underlying
ecophysiological mechanisms, as well as grazing management options to mitigate species diversity decline, should be further studied. MenosIn native campos of Uruguay, overseeding legumes coupled with phosphorus (P) fertilization is a technology used to increase animal production. Short-termimprovements in both forage productivity and quality are repeatedly reported. However, some evidence suggests that this management may at times lead to the collapse of the native community and invasions by exotic species. Indeed, it is yet unclear to what extent overseeding legumes into native grasslands affects its long-term integrity. This study uses data from a long-term experiment to assess whether increased P fertilizer rates?typically used to encourage legume establishment and growth?are associated with reduced species diversity. In 1996 a grazed native grassland in eastern Uruguay was either left untouched (control) or overseeded with a mix of Trifolium repens and Lotus corniculatus and then fertilized at either a moderate or high rate of P (197 or 394 kg · ha?1 over 13 years, respectively). The three treatments were arranged in a randomized block design with four replicates of 2 hectares each. In 2005 the experiment was exhaustively sampled: 11 georeferenced sampling points per replicate, each encompassing ~20m2. Extractable Pwasmeasured in the 0?5- and 5?15-cmsoil layers. In 2009, species presence and cover weremeasured at the same points. Across treatments,wherever legumes were introduced, extractable soil Pwas negatively related to species richness and diversity (P b 0.01) and native grass cover was reduced. This ... Presentar Todo |
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Palabras claves : |
CAMPOS; IMPROVEMENT; INTEGRACIÓN A LARGO PLAZO; LONG-TERM INTEGRITY; PRODUCCIÓN A CORTO PLAZO; SHORT-TERM PRODUCTION; TRADE-OF. |
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Thesagro : |
INTEGRACION; LEGUMINOSAS; MEJORAMIENTOS EXTENSIVOS; PASTURAS NATURALES; PRODUCCION. |
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Asunto categoría : |
F62 Fisiología de la planta - Crecimiento y desarrollo |
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Marc : |
LEADER 03124naa a2200373 a 4500
001 1054261
005 2019-10-10
008 2016 bl uuuu u00u1 u #d
022 $a1550-7424
024 7 $a10.1016/j.rama.2015.10.006$2DOI
100 1 $aJAURENA, M.
245 $aThe dilemma of improving native grasslands by overseeding legumes$bproduction intensification or diversity conservation.$h[electronic resource]
260 $c2016
500 $aArticle history: Received 25 November 2014; Accepted 23 September 2015.
520 $aIn native campos of Uruguay, overseeding legumes coupled with phosphorus (P) fertilization is a technology used to increase animal production. Short-termimprovements in both forage productivity and quality are repeatedly reported. However, some evidence suggests that this management may at times lead to the collapse of the native community and invasions by exotic species. Indeed, it is yet unclear to what extent overseeding legumes into native grasslands affects its long-term integrity. This study uses data from a long-term experiment to assess whether increased P fertilizer rates?typically used to encourage legume establishment and growth?are associated with reduced species diversity. In 1996 a grazed native grassland in eastern Uruguay was either left untouched (control) or overseeded with a mix of Trifolium repens and Lotus corniculatus and then fertilized at either a moderate or high rate of P (197 or 394 kg · ha?1 over 13 years, respectively). The three treatments were arranged in a randomized block design with four replicates of 2 hectares each. In 2005 the experiment was exhaustively sampled: 11 georeferenced sampling points per replicate, each encompassing ~20m2. Extractable Pwasmeasured in the 0?5- and 5?15-cmsoil layers. In 2009, species presence and cover weremeasured at the same points. Across treatments,wherever legumes were introduced, extractable soil Pwas negatively related to species richness and diversity (P b 0.01) and native grass cover was reduced. This effect became asymptotic once soil P exceeded 27 and 36 mg · kg?1 of P (0?5 cm), respectively. Therefore the documented reduction in species richness and diversity suggests a trade-off between increased pasture production and decreased vegetation stability may be operating in response to P fertilization of overseeded grasslands. The underlying ecophysiological mechanisms, as well as grazing management options to mitigate species diversity decline, should be further studied.
650 $aINTEGRACION
650 $aLEGUMINOSAS
650 $aMEJORAMIENTOS EXTENSIVOS
650 $aPASTURAS NATURALES
650 $aPRODUCCION
653 $aCAMPOS
653 $aIMPROVEMENT
653 $aINTEGRACIÓN A LARGO PLAZO
653 $aLONG-TERM INTEGRITY
653 $aPRODUCCIÓN A CORTO PLAZO
653 $aSHORT-TERM PRODUCTION
653 $aTRADE-OF
700 1 $aLEZAMA, F.
700 1 $aSALVO, L.
700 1 $aCARDOZO, G.
700 1 $aAYALA, W.
700 1 $aTERRA, J.A.
700 1 $aNABINGER, C.
773 $tRangeland Ecology & Management, 2016$gv. 69, no. 1 p. 35-42.
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