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Biblioteca (s) : |
INIA Treinta y Tres. |
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Fecha : |
14/11/2022 |
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Actualizado : |
14/11/2022 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Autor : |
PAÑELLA, P.G.; GUIDO, A.; JAURENA, M.; CARDOZO, G.; LEZAMA, F. |
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Afiliación : |
PEDRO G. PAÑELLA, Departamento de Sistemas Ambientales, Facultad de Agronomía, Universidad de la República, Montevideo, Uruguay; ANACLARA GUIDO, Instituto de Ecología y Ciencias Ambientales, Facultad de Ciencias, Universidad de la República, Montevideo, Uruguay.; MARTIN ALEJANDRO JAURENA BARRIOS, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; GERONIMO AGUSTIN CARDOZO CABANELAS, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; FELIPE LEZAMA, Departamento de Sistemas Ambientales, Facultad de Agronomía, Universidad de la República, Montevideo, Uruguay. |
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Título : |
Fertilization and overseeding legumes on native grasslands leads to a hardly reversible degraded state. |
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Fecha de publicación : |
2022 |
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Fuente / Imprenta : |
Applied Vegetation Science, 2022, https://doi.org/10.1111/avsc.12693 (In press). |
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DOI : |
10.1111/avsc.12693 |
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Idioma : |
Inglés |
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Notas : |
Funding information: INNOVAGRO project 148811, ANII. Comisión Sectorial de Investigación Científica - UdelaR (Grupo I+D 433).
Article history: First Publication, 25 October 2022. |
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Contenido : |
Diverse practices related to livestock intensification often have a deep impact on grassland diversity. Moreover, alternative degraded states that are hardly reversible can be observed, resulting in low-diversity communities, dominated by invasive alien species. Therefore, the need arises to understand aboveground vegetation dynamics in these communities, and the potential of the seed bank to revert this degradation. In this study, we evaluated the impact of overseeding alien legumes coupled with phosphorus fertilization over natural grasslands, in terms of aboveground vegetation composition and soil seed bank. This was performed in a long-term experiment (23 years) in eastern Uruguay with three treatments: (1) native grasslands and native grasslands overseeded with alien legumes and fertilized at a (2) moderate or (3) high phosphorus dosage. Vegetation surveys were done in 2009 and 2019 to evaluate changes, and the seed bank was sampled in 2019. Native grasslands had higher total richness, native species richness and abundance for both years, as well as a higher species turnover in both temporal and spatial dimensions. The dominant species in overseeded treatments was the invasive alien grass Cynodon dactylon. The seed bank was similar between treatments in terms of seed density and richness, but differed in composition, with a higher abundance of alien species in the overseeded grassland. Seed banks showed low similarity with the aboveground vegetation. The overseeded grassland appears to be in a degraded state of low species diversity, with low turnover and invaded by alien species. The seeds in the soil appear to be insufficient to revert this condition and might be a hindrance for restoration due to the high abundance of alien species. Grasslands that have been degraded by long periods of fertilization and overseeding legumes present a great challenge for ecological restoration, since invasive alien species should be controlled before native species are reintroduced. MenosDiverse practices related to livestock intensification often have a deep impact on grassland diversity. Moreover, alternative degraded states that are hardly reversible can be observed, resulting in low-diversity communities, dominated by invasive alien species. Therefore, the need arises to understand aboveground vegetation dynamics in these communities, and the potential of the seed bank to revert this degradation. In this study, we evaluated the impact of overseeding alien legumes coupled with phosphorus fertilization over natural grasslands, in terms of aboveground vegetation composition and soil seed bank. This was performed in a long-term experiment (23 years) in eastern Uruguay with three treatments: (1) native grasslands and native grasslands overseeded with alien legumes and fertilized at a (2) moderate or (3) high phosphorus dosage. Vegetation surveys were done in 2009 and 2019 to evaluate changes, and the seed bank was sampled in 2019. Native grasslands had higher total richness, native species richness and abundance for both years, as well as a higher species turnover in both temporal and spatial dimensions. The dominant species in overseeded treatments was the invasive alien grass Cynodon dactylon. The seed bank was similar between treatments in terms of seed density and richness, but differed in composition, with a higher abundance of alien species in the overseeded grassland. Seed banks showed low similarity with the aboveground vegetation. The overseede... Presentar Todo |
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Palabras claves : |
DIVERSITY; FERTILIZATION; INVASION; OVERSEEDED; RESTORATION. |
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Asunto categoría : |
H01 Protección de plantas - Aspectos generales |
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Marc : |
LEADER 02903naa a2200253 a 4500
001 1063719
005 2022-11-14
008 2022 bl uuuu u00u1 u #d
024 7 $a10.1111/avsc.12693$2DOI
100 1 $aPAÑELLA, P.G.
245 $aFertilization and overseeding legumes on native grasslands leads to a hardly reversible degraded state.
260 $c2022
500 $aFunding information: INNOVAGRO project 148811, ANII. Comisión Sectorial de Investigación Científica - UdelaR (Grupo I+D 433). Article history: First Publication, 25 October 2022.
520 $aDiverse practices related to livestock intensification often have a deep impact on grassland diversity. Moreover, alternative degraded states that are hardly reversible can be observed, resulting in low-diversity communities, dominated by invasive alien species. Therefore, the need arises to understand aboveground vegetation dynamics in these communities, and the potential of the seed bank to revert this degradation. In this study, we evaluated the impact of overseeding alien legumes coupled with phosphorus fertilization over natural grasslands, in terms of aboveground vegetation composition and soil seed bank. This was performed in a long-term experiment (23 years) in eastern Uruguay with three treatments: (1) native grasslands and native grasslands overseeded with alien legumes and fertilized at a (2) moderate or (3) high phosphorus dosage. Vegetation surveys were done in 2009 and 2019 to evaluate changes, and the seed bank was sampled in 2019. Native grasslands had higher total richness, native species richness and abundance for both years, as well as a higher species turnover in both temporal and spatial dimensions. The dominant species in overseeded treatments was the invasive alien grass Cynodon dactylon. The seed bank was similar between treatments in terms of seed density and richness, but differed in composition, with a higher abundance of alien species in the overseeded grassland. Seed banks showed low similarity with the aboveground vegetation. The overseeded grassland appears to be in a degraded state of low species diversity, with low turnover and invaded by alien species. The seeds in the soil appear to be insufficient to revert this condition and might be a hindrance for restoration due to the high abundance of alien species. Grasslands that have been degraded by long periods of fertilization and overseeding legumes present a great challenge for ecological restoration, since invasive alien species should be controlled before native species are reintroduced.
653 $aDIVERSITY
653 $aFERTILIZATION
653 $aINVASION
653 $aOVERSEEDED
653 $aRESTORATION
700 1 $aGUIDO, A.
700 1 $aJAURENA, M.
700 1 $aCARDOZO, G.
700 1 $aLEZAMA, F.
773 $tApplied Vegetation Science, 2022, https://doi.org/10.1111/avsc.12693 (In press).
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Registro completo
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Biblioteca (s) : |
INIA La Estanzuela; INIA Treinta y Tres. |
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Fecha actual : |
21/10/2019 |
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Actualizado : |
27/04/2022 |
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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 : |
GRAHMANN, K.; RUBIO, V.; TERRA, J.A.; QUINCKE, A. |
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Afiliación : |
KATHRIN GRAHMANN, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay.; VALENTINA RUBIO DELLEPIANE, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; JOSÉ ALFREDO TERRA FERNÁNDEZ, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; JUAN ANDRES QUINCKE WALDEN, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
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Título : |
Long-term observations in contrasting crop-pasture rotations over half a century: Statistical analysis of chemical soil properties and implications for soil sampling frequency. |
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Fecha de publicación : |
2020 |
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Fuente / Imprenta : |
Agriculture, Ecosystems and Environment, 1 January 2020, Volume 287, Article number 106710. OPEN ACCESS. Doi: https://doi.org/10.1016/j.agee.2019.106710 |
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DOI : |
10.1016/j.agee.2019.106710 |
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Idioma : |
Inglés |
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Notas : |
Article history: Received 12 April 2019/Received in revised form 1 October 2019/Accepted 5 October 2019 /Available online 21 October 2019. |
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Contenido : |
Abstract:
Continuous agriculture (CA) has led to sustainability problems linked with production decreases, environmental contamination, crop failure and soil degradation in many regions of the world. Crop-pasture rotations (CPR) are management alternatives that contribute to environmental sustainability and productive diversification. Long-term experiments (LTE) play a major role in evaluations of the impact of different management practices on soil quality. However, the results can be misleading if the data are not adequately analyzed. A unique dataset of annual soil samples from a 55-year-old LTE was used 1) to evaluate the effects of a crop-pasture rotation on soil quality and crop productivity and 2) to provide robust statistical models to measure long-term changes in chemical soil quality parameters. Treatments were seven rotations, including CA or CPR with different proportions of pasture in the system (33%, 50%, or 66%). Soil organic carbon (SOC), total nitrogen (Ntot), exchangeable potassium (K) and soil pH have been determined annually since 1964, and the cumulative treatment effects were analyzed. Correlation structures showing the variance heterogeneity for the study years were tested for each parameter and condition. The longer the duration was of the pasture in the rotation, the slower the degradation was in the chemical soil quality. The CPR made a key contribution to sustainable agricultural diversification and intensification, leading to 30% higher crop yields and 19% and 14% greater SOC and Ntot concentrations, respectively, compared with CA. This LTE played a major role in the identification of strategies to increase soil fertility with diversified crop rotations through pasture integration, and statistically robust results were obtained that demonstrate the significance of frequent soil surveying over the long run. MenosAbstract:
Continuous agriculture (CA) has led to sustainability problems linked with production decreases, environmental contamination, crop failure and soil degradation in many regions of the world. Crop-pasture rotations (CPR) are management alternatives that contribute to environmental sustainability and productive diversification. Long-term experiments (LTE) play a major role in evaluations of the impact of different management practices on soil quality. However, the results can be misleading if the data are not adequately analyzed. A unique dataset of annual soil samples from a 55-year-old LTE was used 1) to evaluate the effects of a crop-pasture rotation on soil quality and crop productivity and 2) to provide robust statistical models to measure long-term changes in chemical soil quality parameters. Treatments were seven rotations, including CA or CPR with different proportions of pasture in the system (33%, 50%, or 66%). Soil organic carbon (SOC), total nitrogen (Ntot), exchangeable potassium (K) and soil pH have been determined annually since 1964, and the cumulative treatment effects were analyzed. Correlation structures showing the variance heterogeneity for the study years were tested for each parameter and condition. The longer the duration was of the pasture in the rotation, the slower the degradation was in the chemical soil quality. The CPR made a key contribution to sustainable agricultural diversification and intensification, leading to 30% higher crop yield... Presentar Todo |
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Palabras claves : |
CARBONO ORGÁNICO DEL SUELO; EXPERIMENTO A LARGO PLAZO; LONG-TERM EXPERIMENT; NO-TILLAGE; SOIL ORGANIC CARBON; SOIL PH; SOIL SURVEY; STAGGERED START; TOTAL NITROGEN. |
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Thesagro : |
ROTACIONES. |
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Asunto categoría : |
P33 Química y física del suelo |
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Marc : |
LEADER 03052naa a2200301 a 4500
001 1060335
005 2022-04-27
008 2020 bl uuuu u00u1 u #d
024 7 $a10.1016/j.agee.2019.106710$2DOI
100 1 $aGRAHMANN, K.
245 $aLong-term observations in contrasting crop-pasture rotations over half a century$bStatistical analysis of chemical soil properties and implications for soil sampling frequency.$h[electronic resource]
260 $c2020
500 $aArticle history: Received 12 April 2019/Received in revised form 1 October 2019/Accepted 5 October 2019 /Available online 21 October 2019.
520 $aAbstract: Continuous agriculture (CA) has led to sustainability problems linked with production decreases, environmental contamination, crop failure and soil degradation in many regions of the world. Crop-pasture rotations (CPR) are management alternatives that contribute to environmental sustainability and productive diversification. Long-term experiments (LTE) play a major role in evaluations of the impact of different management practices on soil quality. However, the results can be misleading if the data are not adequately analyzed. A unique dataset of annual soil samples from a 55-year-old LTE was used 1) to evaluate the effects of a crop-pasture rotation on soil quality and crop productivity and 2) to provide robust statistical models to measure long-term changes in chemical soil quality parameters. Treatments were seven rotations, including CA or CPR with different proportions of pasture in the system (33%, 50%, or 66%). Soil organic carbon (SOC), total nitrogen (Ntot), exchangeable potassium (K) and soil pH have been determined annually since 1964, and the cumulative treatment effects were analyzed. Correlation structures showing the variance heterogeneity for the study years were tested for each parameter and condition. The longer the duration was of the pasture in the rotation, the slower the degradation was in the chemical soil quality. The CPR made a key contribution to sustainable agricultural diversification and intensification, leading to 30% higher crop yields and 19% and 14% greater SOC and Ntot concentrations, respectively, compared with CA. This LTE played a major role in the identification of strategies to increase soil fertility with diversified crop rotations through pasture integration, and statistically robust results were obtained that demonstrate the significance of frequent soil surveying over the long run.
650 $aROTACIONES
653 $aCARBONO ORGÁNICO DEL SUELO
653 $aEXPERIMENTO A LARGO PLAZO
653 $aLONG-TERM EXPERIMENT
653 $aNO-TILLAGE
653 $aSOIL ORGANIC CARBON
653 $aSOIL PH
653 $aSOIL SURVEY
653 $aSTAGGERED START
653 $aTOTAL NITROGEN
700 1 $aRUBIO, V.
700 1 $aTERRA, J.A.
700 1 $aQUINCKE, A.
773 $tAgriculture, Ecosystems and Environment, 1 January 2020, Volume 287, Article number 106710. OPEN ACCESS. Doi: https://doi.org/10.1016/j.agee.2019.106710
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