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Biblioteca (s) : |
INIA La Estanzuela. |
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Fecha : |
16/10/2018 |
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Actualizado : |
11/03/2021 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Autor : |
TEXEIRA, M.; VERON, S.; IRISARRIA, G.; OYARZABAL, M.; STAIANO, L.; BAEZA, S.; PARUELO, J. |
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Afiliación : |
MARCOS TEXEIRA, Laboratorio de Análisis Regional y Teledetección (LART), Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA), Facultad de Agronomía, Universidad de Buenos Aires–CONICET, Buenos Aires, Ar.; S. R. VERON, Departamento de Métodos Cuantitativos y Sistemas de Información, Facultad de Agronomía, Universidad de Buenos Aires, Buenos Aires, Argentina.; GONZALO IRISARRIA, Laboratorio de Análisis Regional y Teledetección (LART), Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA), Facultad de Agronomía, Universidad de Buenos Aires–CONICET, Argentina.; MARIANO OYARZABAL, Departamento de Métodos Cuantitativos y Sistemas de Información, Facultad de Agronomía, Universidad de Buenos Aires, Argentina.; LUCIANA STAIANO, Laboratorio de Análisis Regional y Teledetección (LART), Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA), Facultad de Agronomía, Universidad de Buenos Aires–CONICET, Argentina.; SANTIAGO BAEZA, Departamento de Sistemas Ambientales, Facultad de Agronomía, Universidad de la República, Montevideo, Uruguay.; JOSÉ PARUELO, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
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Título : |
Functional syndromes as indicators of ecosystem change in temperate grasslands. |
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Fecha de publicación : |
2019 |
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Fuente / Imprenta : |
Ecological Indicators, 2019, v. 96, p.600-610.Doi: https://doi.10.1016/j.ecolind.2018.09.046 |
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DOI : |
10.1016/j.ecolind.2018.09.046 |
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Idioma : |
Inglés |
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Notas : |
Article history: Received 27 December 2017// Received in revised form 21 August 2018// Accepted 24 September 2018. Acknowledgments:
This research was supported by CONICET (Argentina), Universidad de Buenos Aires (Argentina), and FONCyT (Argentina). This work was
carried out with the aid of a grant from the Inter-American Institute for Global Change Research (IAI) CRN III 3095, which is supported by the
US National Science Foundation (Grant GEO-1128040). |
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Contenido : |
Abstract: The lack of an organizing conceptual framework to address ecosystem changes reduces our capacity to distinguish biophysical from direct human impacts on grassland dynamics. This is particularly important for subhumid temperate grasslands, one of the world's most threatened biomes. We identified and mapped 4 functional syndromes of grassland change at the wettest end of its worldwide distribution, the Campos in Uruguay. Syndromes were defined by differences in precipitation use efficiency (PUE, ANPP/precipitation), and in precipitation marginal response (PMR, slope of the linear regression between ANPP and precipitation) between two periods (1981-1995 and 2001-2011). Temporal trends in aboveground net primary production (ANPP, obtained by splicing two sources of NDVI, LTDR and MOD13Q1) were also characterized. To rule out the effect of precipitation we analyzed temporal trends of the residuals from the relationship between ANPP and annual precipitation (RESTRENDS). Functional syndromes associated with increases in seasonality or in the abundance of annual vegetation (?PMR > 0, ?PUE < 0, ?14,000 km 2) and vegetation cover loss (?PUE < 0 and ?PMR < 0, > 5000 km 2) were the most abundant. ANPP trends were significantly negative in 3.7% of the area (2475 km 2) and only positive in 0.3%. However, RESTRENDS were significant in 11% of the area (> 7700 km 2), and mostly negative (in ?7200 km 2). Most of these negative trends and residual trends were associated to seasonality increase and vegetation loss syndromes. These patterns were consistent with observed changes in the region. We highlight that this conceptual framework is suitable for describing patterns of change and potential causes. Moreover, it provides policymakers with a novel tool to guide management and conservation policies, pointing to sites where intervention (i.e. conservation, restoration) is needed. MenosAbstract: The lack of an organizing conceptual framework to address ecosystem changes reduces our capacity to distinguish biophysical from direct human impacts on grassland dynamics. This is particularly important for subhumid temperate grasslands, one of the world's most threatened biomes. We identified and mapped 4 functional syndromes of grassland change at the wettest end of its worldwide distribution, the Campos in Uruguay. Syndromes were defined by differences in precipitation use efficiency (PUE, ANPP/precipitation), and in precipitation marginal response (PMR, slope of the linear regression between ANPP and precipitation) between two periods (1981-1995 and 2001-2011). Temporal trends in aboveground net primary production (ANPP, obtained by splicing two sources of NDVI, LTDR and MOD13Q1) were also characterized. To rule out the effect of precipitation we analyzed temporal trends of the residuals from the relationship between ANPP and annual precipitation (RESTRENDS). Functional syndromes associated with increases in seasonality or in the abundance of annual vegetation (?PMR > 0, ?PUE < 0, ?14,000 km 2) and vegetation cover loss (?PUE < 0 and ?PMR < 0, > 5000 km 2) were the most abundant. ANPP trends were significantly negative in 3.7% of the area (2475 km 2) and only positive in 0.3%. However, RESTRENDS were significant in 11% of the area (> 7700 km 2), and mostly negative (in ?7200 km 2). Most of these negative trends and residual trends were associated to seasonalit... Presentar Todo |
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Palabras claves : |
ABOVEGROUND NET PRIMARY PRODUCTION (ANPP); ECOSYSTEM FUNCTIONAL SYNDROMES; GRASSLANDS; LTDR; MODIS; PRECIPITATION USE EICIENCY (PUE). |
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Thesagro : |
ECOSISTEMAS. |
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Asunto categoría : |
F01 Cultivo |
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Marc : |
LEADER 03262naa a2200301 a 4500
001 1059197
005 2021-03-11
008 2019 bl uuuu u00u1 u #d
024 7 $a10.1016/j.ecolind.2018.09.046$2DOI
100 1 $aTEXEIRA, M.
245 $aFunctional syndromes as indicators of ecosystem change in temperate grasslands.$h[electronic resource]
260 $c2019
500 $aArticle history: Received 27 December 2017// Received in revised form 21 August 2018// Accepted 24 September 2018. Acknowledgments: This research was supported by CONICET (Argentina), Universidad de Buenos Aires (Argentina), and FONCyT (Argentina). This work was carried out with the aid of a grant from the Inter-American Institute for Global Change Research (IAI) CRN III 3095, which is supported by the US National Science Foundation (Grant GEO-1128040).
520 $aAbstract: The lack of an organizing conceptual framework to address ecosystem changes reduces our capacity to distinguish biophysical from direct human impacts on grassland dynamics. This is particularly important for subhumid temperate grasslands, one of the world's most threatened biomes. We identified and mapped 4 functional syndromes of grassland change at the wettest end of its worldwide distribution, the Campos in Uruguay. Syndromes were defined by differences in precipitation use efficiency (PUE, ANPP/precipitation), and in precipitation marginal response (PMR, slope of the linear regression between ANPP and precipitation) between two periods (1981-1995 and 2001-2011). Temporal trends in aboveground net primary production (ANPP, obtained by splicing two sources of NDVI, LTDR and MOD13Q1) were also characterized. To rule out the effect of precipitation we analyzed temporal trends of the residuals from the relationship between ANPP and annual precipitation (RESTRENDS). Functional syndromes associated with increases in seasonality or in the abundance of annual vegetation (?PMR > 0, ?PUE < 0, ?14,000 km 2) and vegetation cover loss (?PUE < 0 and ?PMR < 0, > 5000 km 2) were the most abundant. ANPP trends were significantly negative in 3.7% of the area (2475 km 2) and only positive in 0.3%. However, RESTRENDS were significant in 11% of the area (> 7700 km 2), and mostly negative (in ?7200 km 2). Most of these negative trends and residual trends were associated to seasonality increase and vegetation loss syndromes. These patterns were consistent with observed changes in the region. We highlight that this conceptual framework is suitable for describing patterns of change and potential causes. Moreover, it provides policymakers with a novel tool to guide management and conservation policies, pointing to sites where intervention (i.e. conservation, restoration) is needed.
650 $aECOSISTEMAS
653 $aABOVEGROUND NET PRIMARY PRODUCTION (ANPP)
653 $aECOSYSTEM FUNCTIONAL SYNDROMES
653 $aGRASSLANDS
653 $aLTDR
653 $aMODIS
653 $aPRECIPITATION USE EICIENCY (PUE)
700 1 $aVERON, S.
700 1 $aIRISARRIA, G.
700 1 $aOYARZABAL, M.
700 1 $aSTAIANO, L.
700 1 $aBAEZA, S.
700 1 $aPARUELO, J.
773 $tEcological Indicators, 2019$gv. 96, p.600-610.Doi: https://doi.10.1016/j.ecolind.2018.09.046
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INIA La Estanzuela (LE) |
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Biblioteca (s) : |
INIA La Estanzuela; INIA Treinta y Tres. |
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Fecha actual : |
23/04/2021 |
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Actualizado : |
02/09/2022 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Nacionales |
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Circulación / Nivel : |
Nacional - -- |
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Autor : |
CLARIGET, J.M.; LEMA, O.M.; LA MANNA, A.; PEREZ, E.; BANCHERO, G.; FERNANDEZ, E. |
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Afiliación : |
JUAN MANUEL CLARIGET BRIZ, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; OSCAR MARIO LEMA QUEIJO, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; ALEJANDRO FRANCISCO LA MANNA ALONSO, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; EDUARDO FABIAN PEREZ ARRUTTI, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; GEORGGET ELIZABETH BANCHERO HUNZIKER, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; ENRIQUE GENARO FERNANDEZ RODRIGUEZ, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
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Título : |
Estimated beef cattle performance under intensive grazing systems in Uruguay. [Estimación del desempeño de bovinos para carne en sistemas pastoriles].[Estimativa do desempenho de bovinos de corte em sistemas pastoris intensivos do Uruguai]. |
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Fecha de publicación : |
2021 |
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Fuente / Imprenta : |
Agrociencia Uruguay, Vol. 25, no. 1, Apr. 2021, p. e107. DOI: https://doi.org/10.31285/AGRO.25.107. |
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ISSN : |
e-ISSN: 2301-1548 |
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DOI : |
10.31285/AGRO.25.107 |
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Idioma : |
Inglés |
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Notas : |
Article history: Received 24 Jul 2019/Accepted 25 Feb 2021/Published 23 Apr 2021. Correspondence: jclariget@inia.org.uy. |
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Contenido : |
Abstract:The objective of this study was to analyze the effect of the quantity and quality of the feed offered on the performance of male beef cattle, >6 months old, on intensive grazing systems in Uruguay. Two hundred and fifty-four results from different experimental trials (nexp=68) performed between 1991 and 2020 by different research institutions in Uruguay were compiled and analyzed. The experiments included feeding studies with cultivated pastures as a single nutritional source (nexp=61), as well as supplementation studies on the same type of pastures (nexp=49). Simple, quadratic, multiple linear regressions and recursive partitions were performed to synthesize the information. Quadratic relationships between forage allowance (FA) and average daily gain (ADG) were observed for the different animal categories and seasons of the year. Including other parameters such as initial body weight and supplementation with energy concentrates or silages allowed to predict the ADG of animals under a wide range of feeding alternatives. Briefly, low FA levels (≤1.75 %BW) limit animal performance to maintenance gain conditions (0.2 kg/day). To achieve adequate levels of ADG (0.6-0.7 kg/day), with a low to moderate FA (between 1.75 to 3.5 %BW), the nutritional value of pasture needs to reach at least level 3 of quality (>58 %ODM, >13 %CP, <50 %NDF, >21 %Leg and <19 %DR). These daily gains can be exceeded if the FA is >3.5 %BW (ADG in the range of 0.7 to 1.0 kg/day). The increased response in additional ADG (0.4-0.5 kg/day) by the effect of supplementation with energy concentrate was achieved with low FA levels (≤2.25 %BW). The prediction of additional ADG using a multiple linear regression parameter allows evaluating whether supplementation is appropriate.
Resumen: El objetivo del presente trabajo fue analizar el efecto de la cantidad y la calidad de alimento ofrecido sobre el desempeño de bovinos para carne machos, de más de 6 meses de vida, en sistemas pastoriles intensivos de Uruguay. Se compilaron y analizaron 254 resultados de diferentes trabajos experimentales (nexp=68) realizados por distintas instituciones de investigación de Uruguay entre los años 1991 y 2020. Los estudios incluyen trabajos de alimentación con pasturas cultivadas como única fuente nutricional (nexp=61), así como trabajos de
suplementación sobre ese mismo tipo de pasturas (nexp=49). Se realizaron regresiones lineales simples, cuadráticas, lineales múltiples y particiones recursivas de modo de sintetizar la información. Se observaron relaciones cuadráticas entre la asignación de forraje (AF) y la ganancia media diaria (GMD) para las diferentes categorías y estaciones del año. La inclusión de otros parámetros como peso vivo inicial y suplementación con concentrados energéticos o ensilajes permitió predecir la GMD de los animales bajo un amplio rango de alternativas de alimentación. Brevemente, niveles bajos de AF (?1,75 %PV) limitan el desempeño animal a condiciones de mantenimiento (0,2 kg/día). Para lograr niveles de GMD adecuados (0,6-0,7 kg/día), con AF bajas a moderadas (entre 1,75 a 3,5 %PV), se necesita que el valor nutritivo de la pastura alcance al menos el nivel 3 de calidad (>58 %DMO, >13 %PC, <50 %FDN, >21 %Leg y <19 %RS). Esas ganancias pueden superarse si la AF es >3,5 %PV (GMD en el rango de 0,7 a 1,0 kg/día). La mayor respuesta en GMD adicional (0,4-0,5 kg/día) por efecto de la suplementación con concentrados energéticos se logra con niveles de AF bajos (?2,25 %PV). La predicción de GMD adicional utilizando los parámetros de la regresión lineal múltiple permite evaluar la conveniencia de la suplementación. MenosAbstract:The objective of this study was to analyze the effect of the quantity and quality of the feed offered on the performance of male beef cattle, >6 months old, on intensive grazing systems in Uruguay. Two hundred and fifty-four results from different experimental trials (nexp=68) performed between 1991 and 2020 by different research institutions in Uruguay were compiled and analyzed. The experiments included feeding studies with cultivated pastures as a single nutritional source (nexp=61), as well as supplementation studies on the same type of pastures (nexp=49). Simple, quadratic, multiple linear regressions and recursive partitions were performed to synthesize the information. Quadratic relationships between forage allowance (FA) and average daily gain (ADG) were observed for the different animal categories and seasons of the year. Including other parameters such as initial body weight and supplementation with energy concentrates or silages allowed to predict the ADG of animals under a wide range of feeding alternatives. Briefly, low FA levels (≤1.75 %BW) limit animal performance to maintenance gain conditions (0.2 kg/day). To achieve adequate levels of ADG (0.6-0.7 kg/day), with a low to moderate FA (between 1.75 to 3.5 %BW), the nutritional value of pasture needs to reach at least level 3 of quality (>58 %ODM, >13 %CP, <50 %NDF, >21 %Leg and <19 %DR). These daily gains can be exceeded if the FA is >3.5 %BW (ADG in the range of 0.7 to 1.0 kg/day). The increase... Presentar Todo |
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Palabras claves : |
CULTIVATED PASTURE; FATTENING; PASTURAS CULTIVADAS; REARING; REVIEW; SUPPLEMENTATION. |
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Thesagro : |
BOVINOS DE CARNE; ENGORDE; RECRIA; SUPLEMENTACION. |
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Asunto categoría : |
L01 Ganadería |
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URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/16642/1/107-Article-Text-3971-1-10-20210423.pdf
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Marc : |
LEADER 04928naa a2200337 a 4500
001 1061992
005 2022-09-02
008 2021 bl uuuu u00u1 u #d
022 $ae-ISSN: 2301-1548
024 7 $a10.31285/AGRO.25.107$2DOI
100 1 $aCLARIGET, J.M.
245 $aEstimated beef cattle performance under intensive grazing systems in Uruguay. [Estimación del desempeño de bovinos para carne en sistemas pastoriles].[Estimativa do desempenho de bovinos de corte em sistemas pastoris intensivos do Uruguai].$h[electronic resource]
260 $c2021
500 $aArticle history: Received 24 Jul 2019/Accepted 25 Feb 2021/Published 23 Apr 2021. Correspondence: jclariget@inia.org.uy.
520 $aAbstract:The objective of this study was to analyze the effect of the quantity and quality of the feed offered on the performance of male beef cattle, >6 months old, on intensive grazing systems in Uruguay. Two hundred and fifty-four results from different experimental trials (nexp=68) performed between 1991 and 2020 by different research institutions in Uruguay were compiled and analyzed. The experiments included feeding studies with cultivated pastures as a single nutritional source (nexp=61), as well as supplementation studies on the same type of pastures (nexp=49). Simple, quadratic, multiple linear regressions and recursive partitions were performed to synthesize the information. Quadratic relationships between forage allowance (FA) and average daily gain (ADG) were observed for the different animal categories and seasons of the year. Including other parameters such as initial body weight and supplementation with energy concentrates or silages allowed to predict the ADG of animals under a wide range of feeding alternatives. Briefly, low FA levels (≤1.75 %BW) limit animal performance to maintenance gain conditions (0.2 kg/day). To achieve adequate levels of ADG (0.6-0.7 kg/day), with a low to moderate FA (between 1.75 to 3.5 %BW), the nutritional value of pasture needs to reach at least level 3 of quality (>58 %ODM, >13 %CP, <50 %NDF, >21 %Leg and <19 %DR). These daily gains can be exceeded if the FA is >3.5 %BW (ADG in the range of 0.7 to 1.0 kg/day). The increased response in additional ADG (0.4-0.5 kg/day) by the effect of supplementation with energy concentrate was achieved with low FA levels (≤2.25 %BW). The prediction of additional ADG using a multiple linear regression parameter allows evaluating whether supplementation is appropriate. Resumen: El objetivo del presente trabajo fue analizar el efecto de la cantidad y la calidad de alimento ofrecido sobre el desempeño de bovinos para carne machos, de más de 6 meses de vida, en sistemas pastoriles intensivos de Uruguay. Se compilaron y analizaron 254 resultados de diferentes trabajos experimentales (nexp=68) realizados por distintas instituciones de investigación de Uruguay entre los años 1991 y 2020. Los estudios incluyen trabajos de alimentación con pasturas cultivadas como única fuente nutricional (nexp=61), así como trabajos de suplementación sobre ese mismo tipo de pasturas (nexp=49). Se realizaron regresiones lineales simples, cuadráticas, lineales múltiples y particiones recursivas de modo de sintetizar la información. Se observaron relaciones cuadráticas entre la asignación de forraje (AF) y la ganancia media diaria (GMD) para las diferentes categorías y estaciones del año. La inclusión de otros parámetros como peso vivo inicial y suplementación con concentrados energéticos o ensilajes permitió predecir la GMD de los animales bajo un amplio rango de alternativas de alimentación. Brevemente, niveles bajos de AF (?1,75 %PV) limitan el desempeño animal a condiciones de mantenimiento (0,2 kg/día). Para lograr niveles de GMD adecuados (0,6-0,7 kg/día), con AF bajas a moderadas (entre 1,75 a 3,5 %PV), se necesita que el valor nutritivo de la pastura alcance al menos el nivel 3 de calidad (>58 %DMO, >13 %PC, <50 %FDN, >21 %Leg y <19 %RS). Esas ganancias pueden superarse si la AF es >3,5 %PV (GMD en el rango de 0,7 a 1,0 kg/día). La mayor respuesta en GMD adicional (0,4-0,5 kg/día) por efecto de la suplementación con concentrados energéticos se logra con niveles de AF bajos (?2,25 %PV). La predicción de GMD adicional utilizando los parámetros de la regresión lineal múltiple permite evaluar la conveniencia de la suplementación.
650 $aBOVINOS DE CARNE
650 $aENGORDE
650 $aRECRIA
650 $aSUPLEMENTACION
653 $aCULTIVATED PASTURE
653 $aFATTENING
653 $aPASTURAS CULTIVADAS
653 $aREARING
653 $aREVIEW
653 $aSUPPLEMENTATION
700 1 $aLEMA, O.M.
700 1 $aLA MANNA, A.
700 1 $aPEREZ, E.
700 1 $aBANCHERO, G.
700 1 $aFERNANDEZ, E.
773 $tAgrociencia Uruguay, Vol. 25, no. 1, Apr. 2021, p. e107. DOI: https://doi.org/10.31285/AGRO.25.107.
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