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Biblioteca (s) : |
INIA La Estanzuela. |
Fecha : |
21/08/2019 |
Actualizado : |
27/01/2021 |
Autor : |
CIPRIOTTI, P.; AGUIAR, M.; WIEGAND, T.; PARUELO, J. M. |
Título : |
Combined effects of grazing management and climate on semi-arid steppes: hysteresis dynamics prevent recovery of degraded rangelands. |
Fecha de publicación : |
2019 |
Fuente / Imprenta : |
Journal of Applied Ecology, 2019. |
DOI : |
10.1111/1365-2664.13471 |
Idioma : |
Inglés |
Notas : |
Article history: Received:10 October 2018/Accepted:28 June 2019. |
Contenido : |
ABSTRACTS:
1.Livestock grazing has degraded many arid and semi-arid rangelands around the world, and the drier climate predicted by climate change scenarios may amplify these effects and even lead to catastrophic vegetation shifts.2. We assess the long-term effects (1900-2100) of grazing and rainfall on various aspects of vegetation structure including the grass-shrub balance, the maintenance of spatial vegetation patterns, and the decline or recovery of palatable grasses (e.g., Poa ligularis) on a cover and/or density basis. We used the eco-hydrological and individual-based simulation model DINVEG for this purpose, which describes the spatiotemporal dynamics of Patagonian grass shrub steppes based on six decades of field research (1955-2018). 3. Rainfall and grazing affected the simulated vegetation structure in different ways. Total plant cover was mostly influenced by rainfall, but the cover of palatable grasses was mostly influenced by stocking rate. Dry conditions and low stocking rates (122 mm/yr and < 0.2 sheep·ha-1) favoured grasses over shrubs, whereas shrub encroachment occurred only in the high rainfall scenario combined with high stocking rates (181 mm/yr and > 0.2 sheep·ha-1). 4. High stocking rates and/or drier conditions caused only gradual shifts in spatial vegetation patterns, but maintained the observed positive association for grasses around shrubs. In contrast, shrub encroachment was associated with repulsion between grasses and shrubs and the formation of shrub clusters into a matrix of scattered less palatable grasses. 5. Plant compositional changes occurred through grass species replacement (e.g., P. ligularis is replaced by Pappostipa humilis) and the associated hysteresis effect of palatable grass species: model simulations suggest that 2-3 decades of heavy and year-long continuous grazing can drive palatable grasses to close to extinction, whereas natural recovery of degraded steppes may take 100 years or longer. 6. Synthesis and applications. Desertification and climate change challenge grazing management in semi-arid rangelands, especially in already degraded ecosystems. Management that alternates between years of grazing and resting was effective to maintain the cover of palatable grasses, but this allowed for only very slow recovery of degraded steppes. While drier climate and grazing may not change the overall spatial patterns of vegetation, our results are rather pessimistic regarding the short-term recovery of palatable grasses. This will require increasing complexity in ecosystem restoration efforts, combined with interventions such as sowing, watering, reseeding or major changes in land use. MenosABSTRACTS:
1.Livestock grazing has degraded many arid and semi-arid rangelands around the world, and the drier climate predicted by climate change scenarios may amplify these effects and even lead to catastrophic vegetation shifts.2. We assess the long-term effects (1900-2100) of grazing and rainfall on various aspects of vegetation structure including the grass-shrub balance, the maintenance of spatial vegetation patterns, and the decline or recovery of palatable grasses (e.g., Poa ligularis) on a cover and/or density basis. We used the eco-hydrological and individual-based simulation model DINVEG for this purpose, which describes the spatiotemporal dynamics of Patagonian grass shrub steppes based on six decades of field research (1955-2018). 3. Rainfall and grazing affected the simulated vegetation structure in different ways. Total plant cover was mostly influenced by rainfall, but the cover of palatable grasses was mostly influenced by stocking rate. Dry conditions and low stocking rates (122 mm/yr and < 0.2 sheep·ha-1) favoured grasses over shrubs, whereas shrub encroachment occurred only in the high rainfall scenario combined with high stocking rates (181 mm/yr and > 0.2 sheep·ha-1). 4. High stocking rates and/or drier conditions caused only gradual shifts in spatial vegetation patterns, but maintained the observed positive association for grasses around shrubs. In contrast, shrub encroachment was associated with repulsion between grasses and shrubs and the formation ... Presentar Todo |
Palabras claves : |
CARGA GANADERA; COEXISTENCIA PASTOS-ARBUSTOS; DESERTIFICATION; ECOSYSTEM RESTORATION; GRASS-SHRUB COEXISTENCE; HYSTERESIS; MOSAICOS DE VEGETACIÓN; PASTOREO OVINO; RESTAURACIÓN DE ECOSISTEMAS; SHEEP GRAZING; SIMULATION MODELLING. |
Thesagro : |
DESERTIFICACION. |
Asunto categoría : |
-- |
Marc : |
LEADER 03732naa a2200325 a 4500 001 1060044 005 2021-01-27 008 2019 bl uuuu u00u1 u #d 024 7 $a10.1111/1365-2664.13471$2DOI 100 1 $aCIPRIOTTI, P. 245 $aCombined effects of grazing management and climate on semi-arid steppes$bhysteresis dynamics prevent recovery of degraded rangelands.$h[electronic resource] 260 $c2019 500 $aArticle history: Received:10 October 2018/Accepted:28 June 2019. 520 $aABSTRACTS: 1.Livestock grazing has degraded many arid and semi-arid rangelands around the world, and the drier climate predicted by climate change scenarios may amplify these effects and even lead to catastrophic vegetation shifts.2. We assess the long-term effects (1900-2100) of grazing and rainfall on various aspects of vegetation structure including the grass-shrub balance, the maintenance of spatial vegetation patterns, and the decline or recovery of palatable grasses (e.g., Poa ligularis) on a cover and/or density basis. We used the eco-hydrological and individual-based simulation model DINVEG for this purpose, which describes the spatiotemporal dynamics of Patagonian grass shrub steppes based on six decades of field research (1955-2018). 3. Rainfall and grazing affected the simulated vegetation structure in different ways. Total plant cover was mostly influenced by rainfall, but the cover of palatable grasses was mostly influenced by stocking rate. Dry conditions and low stocking rates (122 mm/yr and < 0.2 sheep·ha-1) favoured grasses over shrubs, whereas shrub encroachment occurred only in the high rainfall scenario combined with high stocking rates (181 mm/yr and > 0.2 sheep·ha-1). 4. High stocking rates and/or drier conditions caused only gradual shifts in spatial vegetation patterns, but maintained the observed positive association for grasses around shrubs. In contrast, shrub encroachment was associated with repulsion between grasses and shrubs and the formation of shrub clusters into a matrix of scattered less palatable grasses. 5. Plant compositional changes occurred through grass species replacement (e.g., P. ligularis is replaced by Pappostipa humilis) and the associated hysteresis effect of palatable grass species: model simulations suggest that 2-3 decades of heavy and year-long continuous grazing can drive palatable grasses to close to extinction, whereas natural recovery of degraded steppes may take 100 years or longer. 6. Synthesis and applications. Desertification and climate change challenge grazing management in semi-arid rangelands, especially in already degraded ecosystems. Management that alternates between years of grazing and resting was effective to maintain the cover of palatable grasses, but this allowed for only very slow recovery of degraded steppes. While drier climate and grazing may not change the overall spatial patterns of vegetation, our results are rather pessimistic regarding the short-term recovery of palatable grasses. This will require increasing complexity in ecosystem restoration efforts, combined with interventions such as sowing, watering, reseeding or major changes in land use. 650 $aDESERTIFICACION 653 $aCARGA GANADERA 653 $aCOEXISTENCIA PASTOS-ARBUSTOS 653 $aDESERTIFICATION 653 $aECOSYSTEM RESTORATION 653 $aGRASS-SHRUB COEXISTENCE 653 $aHYSTERESIS 653 $aMOSAICOS DE VEGETACIÓN 653 $aPASTOREO OVINO 653 $aRESTAURACIÓN DE ECOSISTEMAS 653 $aSHEEP GRAZING 653 $aSIMULATION MODELLING 700 1 $aAGUIAR, M. 700 1 $aWIEGAND, T. 700 1 $aPARUELO, J. M. 773 $tJournal of Applied Ecology, 2019.
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Registro completo
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Biblioteca (s) : |
INIA La Estanzuela. |
Fecha actual : |
15/08/2022 |
Actualizado : |
01/12/2022 |
Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
Circulación / Nivel : |
Internacional - -- |
Autor : |
PASSOS, J.R.S.; GUERREIRO, D.D.; KAMILA S. OTÁVIO; DOS SANTOS-NETO, P.C.; SOUZA-NEVES, M.; CUADRO, F.; NUÑEZ?OLIVERA, R.; CRISPO, M.; VASCONCELOS, F.R.; BEZERRA, M.J.B.; SILVA, R.F.; LIMA, L.F.; FIGUEIREDO, J.R.; BUSTAMANTE-FILHO, I.C.; MENCHACA, A.; MOURA, A.A. |
Afiliación : |
JOSÉ RENATO S. PASSOS, Laboratory of Animal Physiology, Department of Animal Science, Federal University of Ceará, Fortaleza, Brazil.; DENISE D. GUERREIRO, Laboratory of Animal Physiology, Department of Animal Science, Federal University of Ceará, Fortaleza, Brazil.; OTÁVIO, K.S., Laboratory of Animal Physiology, Department of Animal Science, Federal University of Ceará, Fortaleza, Brazil.; PEDRO C. DOS SANTOS-NETO, Instituto de Reproducción Animal Uruguay, Fundación IRAUy, Montevideo, Uruguay.; MARCELA SOUZA-NEVES, Instituto de Reproducción Animal Uruguay, Fundación IRAUy, Montevideo, Uruguay.; FEDERICO CUADRO, Instituto de Reproducción Animal Uruguay, Fundación IRAUy, Montevideo, Uruguay.; RICHARD NUÑEZ?OLIVERA, Instituto de Reproducción Animal Uruguay, Fundación IRAUy, Montevideo, Uruguay.; MARTINA CRIPO, Unidad de Biotecnología en Animales de Laboratorio, Institut Pasteur de Montevideo, Montevideo, Uruguay.; FÁBIO R. VASCONCELOS, Laboratory of Animal Physiology, Department of Animal Science, Federal University of Ceará, Fortaleza, Brazil.; MARIA JULIA B. BEZERRA, Laboratory of Animal Physiology, Department of Animal Science, Federal University of Ceará, Fortaleza, Brazil.; RENATO F. SILVA, Laboratory of Manipulation of Oocyte and Preantral Follicles (LAMOFOPA), Ceará State University, Fortaleza, Brazil.; LARITZA F. LIMA, Laboratory of Manipulation of Oocyte and Preantral Follicles (LAMOFOPA), Ceará State University, Fortaleza, Brazil.; JOSÉ RICARDO FIGUEIREDO, Laboratory of Manipulation of Oocyte and Preantral Follicles (LAMOFOPA), Ceará State University, Fortaleza, Brazil.; IVAN C. BUSTAMANTE-FILHO, Laboratório de Biotecnologia, Universidade do Vale do Taquari, Lajeado, Brazil.; JOSE ALEJO MENCHACA BARBEITO, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay./Instituto de Reproducción Animal Uruguay, Fundación IRAUy, Montevideo, Uruguay.; ARLINDO A. MOURA, Laboratory of Animal Physiology, Department of Animal Science, Federal University of Ceará, Fortaleza, Brazil. |
Título : |
How in vitro maturation changes the proteome of ovine cumulus-oocyte complexes?. |
Complemento del título : |
Volume 89, Issue 10, Pages 459 - 470October 2022 |
Fecha de publicación : |
2022 |
Fuente / Imprenta : |
Molecular reproduction and development, October 2022, Volume 89, Issue 10, pages 459-470. doi: https://doi.org/10.1002/mrd.23638 |
DOI : |
10.1002/mrd.23638 |
Idioma : |
Inglés |
Notas : |
Article history: Received: 16 February 2022 | Accepted: 21 July 2022. -- Corresponding author: Moura, A.A.; Laboratory of Animal Physiology, Department of Animal Science, Federal University of Ceará, Fortaleza, Brazil; email:arlindo.moura@gmail.com -- Funding: The experiments presently described were conducted at the facilities of the Instituto de Reproducción Animal Uruguay (Fundacion IRAUy, Montevideo, Uruguay) and at the Unidad de Biotecnología en Animales de Laboratorio (UBAL) of the Institut Pasteur de Montevideo, Uruguay. Specially, the authors thank Dr. Rosario Durán and Dr. Alejandro Leyva for kindly assisting us in the proteomic experiment. Financial support was provided by Fundacion IRAUy; PRONEX 02/2015 (Programa de Apoio a Núcleos de Excelência Pronex/Funcap/CNPq); The Brazilian Research Council-CNPq (grants # 313160/2017-1 and 438773/2018-7); Brazilian Commission for Higher Education (CAPES); Ceará State Foundation for the Support of Technology and Scientific Development (FUNCAP), Brazil. |
Contenido : |
Abstract: The present study evaluated the effects of in vitro maturation (IVM) on the proteome of cumulus-oocyte complexes (COCs) from ewes. Extracted COC proteins were analyzed by LC-MS/MS. Differences in protein abundances (p < 0.05) and functional enrichments in immature versus in vitro-matured COCs were evaluated using bioinformatics tools. There were 2550 proteins identified in the COCs, with 89 and 87 proteins exclusive to immature and mature COCs, respectively. IVM caused downregulation of 84 and upregulation of 34 proteins. Major upregulated proteins in mature COCs were dopey_N domain-containing protein, structural maintenance of chromosomes protein, ubiquitin-like modifier-activating enzyme 2. Main downregulated proteins in mature COCs were immunoglobulin heavy constant mu, inter-alpha-trypsin inhibitor heavy chain 2, alpha-2-macroglobulin. Proteins exclusive to mature COCs and upregulated after IVM related to immune response, complement cascade, vesicle-mediated transport, cell cycle, and extracellular matrix organization. Proteins of immature COCs and downregulated after IVM were linked to metabolic processes, immune response, and complement cascade. KEGG pathways and miRNA-regulated genes attributed to downregulated and mature COC proteins related to complement and coagulation cascades, metabolism, humoral response, and B cell-mediated immunity. Thus, IVM influenced the ovine COC proteome. This knowledge supports the future development of efficient IVM protocols for Ovis aries. © 2022 Wiley Periodicals LLC. MenosAbstract: The present study evaluated the effects of in vitro maturation (IVM) on the proteome of cumulus-oocyte complexes (COCs) from ewes. Extracted COC proteins were analyzed by LC-MS/MS. Differences in protein abundances (p < 0.05) and functional enrichments in immature versus in vitro-matured COCs were evaluated using bioinformatics tools. There were 2550 proteins identified in the COCs, with 89 and 87 proteins exclusive to immature and mature COCs, respectively. IVM caused downregulation of 84 and upregulation of 34 proteins. Major upregulated proteins in mature COCs were dopey_N domain-containing protein, structural maintenance of chromosomes protein, ubiquitin-like modifier-activating enzyme 2. Main downregulated proteins in mature COCs were immunoglobulin heavy constant mu, inter-alpha-trypsin inhibitor heavy chain 2, alpha-2-macroglobulin. Proteins exclusive to mature COCs and upregulated after IVM related to immune response, complement cascade, vesicle-mediated transport, cell cycle, and extracellular matrix organization. Proteins of immature COCs and downregulated after IVM were linked to metabolic processes, immune response, and complement cascade. KEGG pathways and miRNA-regulated genes attributed to downregulated and mature COC proteins related to complement and coagulation cascades, metabolism, humoral response, and B cell-mediated immunity. Thus, IVM influenced the ovine COC proteome. This knowledge supports the future development of efficient IVM protocols ... Presentar Todo |
Palabras claves : |
FOLLICLE; OVARY; OVINE; PLATAFORMA DE INVESTIGACIÓN EN SALUD ANIMAL; PLATAFORMA DE SALUD ANIMAL; PROTEINS; REPRODUCTION. |
Asunto categoría : |
-- |
Marc : |
LEADER 03782naa a2200409 a 4500 001 1063525 005 2022-12-01 008 2022 bl uuuu u00u1 u #d 024 7 $a10.1002/mrd.23638$2DOI 100 1 $aPASSOS, J.R.S. 245 $aHow in vitro maturation changes the proteome of ovine cumulus-oocyte complexes?.$h[electronic resource] 260 $c2022 500 $aArticle history: Received: 16 February 2022 | Accepted: 21 July 2022. -- Corresponding author: Moura, A.A.; Laboratory of Animal Physiology, Department of Animal Science, Federal University of Ceará, Fortaleza, Brazil; email:arlindo.moura@gmail.com -- Funding: The experiments presently described were conducted at the facilities of the Instituto de Reproducción Animal Uruguay (Fundacion IRAUy, Montevideo, Uruguay) and at the Unidad de Biotecnología en Animales de Laboratorio (UBAL) of the Institut Pasteur de Montevideo, Uruguay. Specially, the authors thank Dr. Rosario Durán and Dr. Alejandro Leyva for kindly assisting us in the proteomic experiment. Financial support was provided by Fundacion IRAUy; PRONEX 02/2015 (Programa de Apoio a Núcleos de Excelência Pronex/Funcap/CNPq); The Brazilian Research Council-CNPq (grants # 313160/2017-1 and 438773/2018-7); Brazilian Commission for Higher Education (CAPES); Ceará State Foundation for the Support of Technology and Scientific Development (FUNCAP), Brazil. 520 $aAbstract: The present study evaluated the effects of in vitro maturation (IVM) on the proteome of cumulus-oocyte complexes (COCs) from ewes. Extracted COC proteins were analyzed by LC-MS/MS. Differences in protein abundances (p < 0.05) and functional enrichments in immature versus in vitro-matured COCs were evaluated using bioinformatics tools. There were 2550 proteins identified in the COCs, with 89 and 87 proteins exclusive to immature and mature COCs, respectively. IVM caused downregulation of 84 and upregulation of 34 proteins. Major upregulated proteins in mature COCs were dopey_N domain-containing protein, structural maintenance of chromosomes protein, ubiquitin-like modifier-activating enzyme 2. Main downregulated proteins in mature COCs were immunoglobulin heavy constant mu, inter-alpha-trypsin inhibitor heavy chain 2, alpha-2-macroglobulin. Proteins exclusive to mature COCs and upregulated after IVM related to immune response, complement cascade, vesicle-mediated transport, cell cycle, and extracellular matrix organization. Proteins of immature COCs and downregulated after IVM were linked to metabolic processes, immune response, and complement cascade. KEGG pathways and miRNA-regulated genes attributed to downregulated and mature COC proteins related to complement and coagulation cascades, metabolism, humoral response, and B cell-mediated immunity. Thus, IVM influenced the ovine COC proteome. This knowledge supports the future development of efficient IVM protocols for Ovis aries. © 2022 Wiley Periodicals LLC. 653 $aFOLLICLE 653 $aOVARY 653 $aOVINE 653 $aPLATAFORMA DE INVESTIGACIÓN EN SALUD ANIMAL 653 $aPLATAFORMA DE SALUD ANIMAL 653 $aPROTEINS 653 $aREPRODUCTION 700 1 $aGUERREIRO, D.D. 700 1 $aKAMILA S. OTÁVIO 700 1 $aDOS SANTOS-NETO, P.C. 700 1 $aSOUZA-NEVES, M. 700 1 $aCUADRO, F. 700 1 $aNUÑEZ?OLIVERA, R. 700 1 $aCRISPO, M. 700 1 $aVASCONCELOS, F.R. 700 1 $aBEZERRA, M.J.B. 700 1 $aSILVA, R.F. 700 1 $aLIMA, L.F. 700 1 $aFIGUEIREDO, J.R. 700 1 $aBUSTAMANTE-FILHO, I.C. 700 1 $aMENCHACA, A. 700 1 $aMOURA, A.A. 773 $tMolecular reproduction and development, October 2022, Volume 89, Issue 10, pages 459-470. doi: https://doi.org/10.1002/mrd.23638
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