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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 : |
20/08/2019 |
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Actualizado : |
04/05/2020 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Autor : |
ALTESOR, A.; GALLEGO, F.; FERRÓN, M; PEZZANI, F.; LÓPEZ-MÁRSICO, L.; LEZAMA,F.; BAEZA, S.; PEREIRA, M.; COSTA, B.; PARUELO, J. |
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Afiliación : |
ALICE ALTESOR, Grupo de Ecología de Pastizales, Instituto de Ecología y Ciencias Ambientales, Facultad de Ciencias, Universidad de la República, Montevideo, Uruguay.; FEDERICO GALLEGO, Grupo de Ecología de Pastizales, Instituto de Ecología y Ciencias Ambientales, Facultad de Ciencias, Universidad de la República, Montevideo, Uruguay.; MANUEL FERRÓN, Grupo de Ecología de Pastizales, Instituto de Ecología y Ciencias Ambientales, Facultad de Ciencias, Universidad de la República, Montevideo, Uruguay.; FABIANA PEZZANI, Ecología, Departamento de Sistemas Ambientales, Facultad de Agronomía, Universidad de la República, Montevideo, Uruguay.; LUIS LÓPEZ-MÁRSICO, Grupo de Ecología de Pastizales, Instituto de Ecología y Ciencias Ambientales, Facultad de Ciencias, Universidad de la República, Montevideo, Uruguay.; FELIPE LEZAMA, Ecología, Departamento de Sistemas Ambientales, Facultad de Agronomía, Universidad de la República, Montevideo, Uruguay.; SANTIAGO BAEZA, Ecología, Departamento de Sistemas Ambientales, Facultad de Agronomía, Universidad de la República, Montevideo, Uruguay.; MARCELO PEREIRA, Instituto Plan Agropecuario, Montevideo, Uruguay.; BEATRIZ COSTA, Grupo de Ecología de Pastizales, Instituto de Ecología y Ciencias Ambientales, Facultad de Ciencias, Universidad de la República, Montevideo, Uruguay.; JOSÉ PARUELO, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay./Grupo de Ecología de Pastizales, Instituto de Ecología y Ciencias Ambientales, Facultad de Ciencias, Montevideo, Uruguay.Facultad de Agronomía and IFEVA,UBA, CONICET, Argentina. |
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Título : |
An inductive approach to build State-and-Transition Models for Uruguayan grasslands. |
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Fecha de publicación : |
2019 |
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Fuente / Imprenta : |
Rangeland Ecology and Management, November 2019, Volume 72, Issue 6, Pages 1005-1016. Doi: https://doi.org/10.1016/j.rama.2019.06.004 |
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DOI : |
10.1016/j.rama.2019.06.004 |
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Idioma : |
Inglés |
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Notas : |
Article history: Received 19 October 2018// Revised 7 June 2019// Accepted 24 June 2019// Available online 8 August 2019.-Correspondence: E-mail address: aaltesor@fcien.edu.uy (A. Altesor).This work was supported by Instituto Nacional de Investigación Agropecuaria (Fondo de Promoción de Tecnología Agropecuaria FPTA 305). This work was carried out with the aid of a grant from the Inter-American Institute for Global Change Research CRN3095 (Bridging Ecosystem Services and Territorial Planning: a southern South American initiative), which is supported by the US National Science Foundation (GEO 1128040). The Comisión Sectorial de Investigación Científica of the Universidad de la República supported this work. |
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Contenido : |
Abstract:
We report State-and-Transition Models for Uruguayan grasslands built upon a methodological approach that objectively defined states/phases associated, a priori, to rangeland management. Such approach was based on randomly sampled areas corresponding to mapped grassland communities. Each sampled area matched a MODIS pixel. Vegetation structural indicators were recorded in every pixel. After a multivariate analysis, field observations were grouped according to similarities in terms of structure, and different "states" and "phases" were identified. Ecosystem functioning and the supply of regulating ecosystem services were estimated for each grassland state/phase using the normalized difference vegetation index (NDVI) derived from MODIS sensor. Finally, workshops were held in order to detect local stakeholders? perceptions, and to discuss the management practices to promote the desired transitions among phases. Results were presented for two vegetation units of the Basaltic ?Cuesta? region. The ?inductive approach? applied not only led to the description of ?states?, but also to the identification of more subtle changes in vegetation ("phases"). Our approach minimized biases due to personal experience as well as differences derived from using different observation protocols. The two vegetation units presented an internal heterogeneity associated to changes in basal stratum height, total cover, stratification, frequency of decreasing species due to grazing, and proportion of plant functional types. The ecosystem functioning descriptors of each phase responded to extreme climatic events differently. Based on stakeholder?s opinions and experiences, stocking rate, sheep/cattle ratio, and grazing method were the main management practices promoting the transition among phases. MenosAbstract:
We report State-and-Transition Models for Uruguayan grasslands built upon a methodological approach that objectively defined states/phases associated, a priori, to rangeland management. Such approach was based on randomly sampled areas corresponding to mapped grassland communities. Each sampled area matched a MODIS pixel. Vegetation structural indicators were recorded in every pixel. After a multivariate analysis, field observations were grouped according to similarities in terms of structure, and different "states" and "phases" were identified. Ecosystem functioning and the supply of regulating ecosystem services were estimated for each grassland state/phase using the normalized difference vegetation index (NDVI) derived from MODIS sensor. Finally, workshops were held in order to detect local stakeholders? perceptions, and to discuss the management practices to promote the desired transitions among phases. Results were presented for two vegetation units of the Basaltic ?Cuesta? region. The ?inductive approach? applied not only led to the description of ?states?, but also to the identification of more subtle changes in vegetation ("phases"). Our approach minimized biases due to personal experience as well as differences derived from using different observation protocols. The two vegetation units presented an internal heterogeneity associated to changes in basal stratum height, total cover, stratification, frequency of decreasing species due to grazing, and proporti... Presentar Todo |
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Palabras claves : |
ECOSYSTEM SERVICES SUPPLY INDEX (ESSI); INDUCTIVE APPROACH; NORMALIZED VEGETATION INDEX (NDVI); PLANT LIFE FORMS; STAKEHOLDERS. |
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Thesagro : |
PASTURAS; URUGUAY. |
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Asunto categoría : |
-- |
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Marc : |
LEADER 03560naa a2200337 a 4500
001 1060038
005 2020-05-04
008 2019 bl uuuu u00u1 u #d
024 7 $a10.1016/j.rama.2019.06.004$2DOI
100 1 $aALTESOR, A.
245 $aAn inductive approach to build State-and-Transition Models for Uruguayan grasslands.$h[electronic resource]
260 $c2019
500 $aArticle history: Received 19 October 2018// Revised 7 June 2019// Accepted 24 June 2019// Available online 8 August 2019.-Correspondence: E-mail address: aaltesor@fcien.edu.uy (A. Altesor).This work was supported by Instituto Nacional de Investigación Agropecuaria (Fondo de Promoción de Tecnología Agropecuaria FPTA 305). This work was carried out with the aid of a grant from the Inter-American Institute for Global Change Research CRN3095 (Bridging Ecosystem Services and Territorial Planning: a southern South American initiative), which is supported by the US National Science Foundation (GEO 1128040). The Comisión Sectorial de Investigación Científica of the Universidad de la República supported this work.
520 $aAbstract: We report State-and-Transition Models for Uruguayan grasslands built upon a methodological approach that objectively defined states/phases associated, a priori, to rangeland management. Such approach was based on randomly sampled areas corresponding to mapped grassland communities. Each sampled area matched a MODIS pixel. Vegetation structural indicators were recorded in every pixel. After a multivariate analysis, field observations were grouped according to similarities in terms of structure, and different "states" and "phases" were identified. Ecosystem functioning and the supply of regulating ecosystem services were estimated for each grassland state/phase using the normalized difference vegetation index (NDVI) derived from MODIS sensor. Finally, workshops were held in order to detect local stakeholders? perceptions, and to discuss the management practices to promote the desired transitions among phases. Results were presented for two vegetation units of the Basaltic ?Cuesta? region. The ?inductive approach? applied not only led to the description of ?states?, but also to the identification of more subtle changes in vegetation ("phases"). Our approach minimized biases due to personal experience as well as differences derived from using different observation protocols. The two vegetation units presented an internal heterogeneity associated to changes in basal stratum height, total cover, stratification, frequency of decreasing species due to grazing, and proportion of plant functional types. The ecosystem functioning descriptors of each phase responded to extreme climatic events differently. Based on stakeholder?s opinions and experiences, stocking rate, sheep/cattle ratio, and grazing method were the main management practices promoting the transition among phases.
650 $aPASTURAS
650 $aURUGUAY
653 $aECOSYSTEM SERVICES SUPPLY INDEX (ESSI)
653 $aINDUCTIVE APPROACH
653 $aNORMALIZED VEGETATION INDEX (NDVI)
653 $aPLANT LIFE FORMS
653 $aSTAKEHOLDERS
700 1 $aGALLEGO, F.
700 1 $aFERRÓN, M
700 1 $aPEZZANI, F.
700 1 $aLÓPEZ-MÁRSICO, L.
700 1 $aLEZAMA,F.
700 1 $aBAEZA, S.
700 1 $aPEREIRA, M.
700 1 $aCOSTA, B.
700 1 $aPARUELO, J.
773 $tRangeland Ecology and Management, November 2019, Volume 72, Issue 6, Pages 1005-1016. Doi: https://doi.org/10.1016/j.rama.2019.06.004
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INIA La Estanzuela (LE) |
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| Acceso al texto completo restringido a Biblioteca INIA Las Brujas. Por información adicional contacte bibliolb@inia.org.uy. |
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Registro completo
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Biblioteca (s) : |
INIA Las Brujas; INIA Treinta y Tres. |
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Fecha actual : |
01/11/2021 |
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Actualizado : |
05/11/2021 |
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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 : |
DE AZEVEDO, E.B.; SAVIAN, J.V.; DO AMARAL, G. A.; DE DAVID, D. B.; GERE, J.I.; MOURA, M.; BREMM, C.; JOCHIMS, F.; ZUBIETA, A. S.; GONDA, H. L.; BAYER, C.; DE FACCIO CARVALHO, P.C. |
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Afiliación : |
EDUARDO BOHRER DE AZEVEDO, Federal University of Pampa, Itaqui, RS, Brazil; JEAN VICTOR SAVIAN, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; GLÁUCIA AZEVEDO DO AMARAL, Department of Agricultural Diagnosis and Research, Hulha Negra, RS, Brazil; DIEGO BITENCOURT DE DAVID, Department of Agricultural Diagnosis and Research, São Gabriel, RS, Brazil; JOSÉ IGNACIO GERE, Unidad de Investigaciones Y Desarrollo de Las Ingenierías, Universidad Tecnológica Nacional, Consejo Nacional de Investigaciones Científcas Y Técnicas, Ciudad Autónoma de Buenos Aires, Argentina; MARTA MOURA KOHMANN, Range Cattle Research and Education Center, University of Florida, Ona, FL, USA; CAROLINA BREMM, Grazing Ecology Research Group, Federal University of Rio Grande Do Sul, Porto Alegre, RS, Brazil; FELIPE JOCHIMS, Research Center for Family Farming (Epagri/Cepaf), Santa Catarina Research and Rural Extension Company (Epagri), Chapecó, SC, Brazil; ANGEL SÁNCHEZ ZUBIETA, Department of Agricultural Diagnosis and Research, Hulha Negra, RS, Brazil; HORACIO LEANDRO GONDA, Swedish University of Agricultural Sciences, Uppsala, Sweden; CIMÉLIO BAYER, Department of Soil Science, Federal University of Rio Grande Do Sul, Porto Alegre, RS, Brazil; PAULO CÉSAR DE FACCIO CARVALHO, Department of Agricultural Diagnosis and Research, Hulha Negra, RS, Brazil. |
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Título : |
Feed intake, methane yield, and efciency of utilization of energy and nitrogen by sheep fed tropical grasses. |
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Fecha de publicación : |
2021 |
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Fuente / Imprenta : |
Tropical Animal Health and Production, 2021, volume 53, Article number 452. doi: https://doi.org/10.1007/s11250-021-02928-4 |
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DOI : |
10.1007/s11250-021-02928-4 |
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Idioma : |
Inglés |
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Notas : |
Article history: Received: 10 July 2020; Accepted: 10 September 2021; Published online: 18 September 2021. |
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Contenido : |
ABSTRACT. - Forage allowance impacts dry matter (DM) intake and the use of nutrients by ruminants. The efficient use of protein and energy from pasture is related to better livestock performance and lower environmental impacts. The aims of this study were to evaluate the effect of forage allowance levels on intake, digestibility, nitrogen (N) and energy balance, and methane (CH4) emissions by lambs fed fresh pearl millet [Pennisetum americanum (L.) Leeke]. An indoor trial was performed using lambs in a completely randomized design with four treatments [forage allowance at 1.5, 2.0, 2.5 kg DM/100 kg of live weight (LW), and ad libitum allowing 20% of refusals] and four replicates (lambs). Forage intake, digestibility, total urine and feces excretion, and CH4 emission were measured to calculate N and energy balances. An increase in forage allowance resulted in a linear increase in lamb forage intake, N retention, and metabolizable energy intake. Moreover, lamb CH4 emission (g/
day) also increased with greater forage allowance, while CH4 yield decreased linearly as forage allowance increased. Our results indicate that maximizing forage intake improves N and energy use efficiency and mitigates CH4 yield and decreases CH4 conversion factor (Ym) by lambs fed pearl millet forage. Thus, management strategies that optimize intake of tropical forages by ruminants improve the use of nutrients ingested and mitigates negative impacts to the environment.
© The Author(s), under exclusive licence to Springer Nature B.V. 2021 MenosABSTRACT. - Forage allowance impacts dry matter (DM) intake and the use of nutrients by ruminants. The efficient use of protein and energy from pasture is related to better livestock performance and lower environmental impacts. The aims of this study were to evaluate the effect of forage allowance levels on intake, digestibility, nitrogen (N) and energy balance, and methane (CH4) emissions by lambs fed fresh pearl millet [Pennisetum americanum (L.) Leeke]. An indoor trial was performed using lambs in a completely randomized design with four treatments [forage allowance at 1.5, 2.0, 2.5 kg DM/100 kg of live weight (LW), and ad libitum allowing 20% of refusals] and four replicates (lambs). Forage intake, digestibility, total urine and feces excretion, and CH4 emission were measured to calculate N and energy balances. An increase in forage allowance resulted in a linear increase in lamb forage intake, N retention, and metabolizable energy intake. Moreover, lamb CH4 emission (g/
day) also increased with greater forage allowance, while CH4 yield decreased linearly as forage allowance increased. Our results indicate that maximizing forage intake improves N and energy use efficiency and mitigates CH4 yield and decreases CH4 conversion factor (Ym) by lambs fed pearl millet forage. Thus, management strategies that optimize intake of tropical forages by ruminants improve the use of nutrients ingested and mitigates negative impacts to the environment.
© The Author(s), under exclusive l... Presentar Todo |
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Palabras claves : |
Forage allowance; Forage digestibility; Greenhouse gas emissions; Nutrient use; Pearl millet. |
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Asunto categoría : |
F01 Cultivo |
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Marc : |
LEADER 02685naa a2200337 a 4500
001 1062511
005 2021-11-05
008 2021 bl uuuu u00u1 u #d
024 7 $a10.1007/s11250-021-02928-4$2DOI
100 1 $aDE AZEVEDO, E.B.
245 $aFeed intake, methane yield, and efciency of utilization of energy and nitrogen by sheep fed tropical grasses.$h[electronic resource]
260 $c2021
500 $aArticle history: Received: 10 July 2020; Accepted: 10 September 2021; Published online: 18 September 2021.
520 $aABSTRACT. - Forage allowance impacts dry matter (DM) intake and the use of nutrients by ruminants. The efficient use of protein and energy from pasture is related to better livestock performance and lower environmental impacts. The aims of this study were to evaluate the effect of forage allowance levels on intake, digestibility, nitrogen (N) and energy balance, and methane (CH4) emissions by lambs fed fresh pearl millet [Pennisetum americanum (L.) Leeke]. An indoor trial was performed using lambs in a completely randomized design with four treatments [forage allowance at 1.5, 2.0, 2.5 kg DM/100 kg of live weight (LW), and ad libitum allowing 20% of refusals] and four replicates (lambs). Forage intake, digestibility, total urine and feces excretion, and CH4 emission were measured to calculate N and energy balances. An increase in forage allowance resulted in a linear increase in lamb forage intake, N retention, and metabolizable energy intake. Moreover, lamb CH4 emission (g/ day) also increased with greater forage allowance, while CH4 yield decreased linearly as forage allowance increased. Our results indicate that maximizing forage intake improves N and energy use efficiency and mitigates CH4 yield and decreases CH4 conversion factor (Ym) by lambs fed pearl millet forage. Thus, management strategies that optimize intake of tropical forages by ruminants improve the use of nutrients ingested and mitigates negative impacts to the environment. © The Author(s), under exclusive licence to Springer Nature B.V. 2021
653 $aForage allowance
653 $aForage digestibility
653 $aGreenhouse gas emissions
653 $aNutrient use
653 $aPearl millet
700 1 $aSAVIAN, J.V.
700 1 $aDO AMARAL, G. A.
700 1 $aDE DAVID, D. B.
700 1 $aGERE, J.I.
700 1 $aMOURA, M.
700 1 $aBREMM, C.
700 1 $aJOCHIMS, F.
700 1 $aZUBIETA, A. S.
700 1 $aGONDA, H. L.
700 1 $aBAYER, C.
700 1 $aDE FACCIO CARVALHO, P.C.
773 $tTropical Animal Health and Production, 2021, volume 53, Article number 452. doi: https://doi.org/10.1007/s11250-021-02928-4
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