Comparison of adaptative strategies to climate variability in rural areas of Argentine Chaco and US Southern Plains during the last century

Ricard, M. Florencia; Viglizzo, Ernesto F.; Podestá, Guillermo

doi:10.1016/j.jaridenv.2014.10.009

Cited by 10 publications

(5 citation statements)

References 29 publications

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“…The comparison of clusters 2 and 3 shows that extreme fluctuation of the groundwater table combined with the low investment capacities in enhancing water appropriation, as well as the type of crops grown, are the reasons why small farms shift towards contractive strategies, implying a shift within their livelihood (Moench, 2007). These latter farmers show a high variability of their irrigated cropped areas from one year to another (Ricard et al, 2015), indicating better flexibility for short-term adaptations. Secondly, the first cluster, which contains 23% of the farmers in the sample, shows that large farmers in the study area are investing in both accommodation and expansive strategies.…”

Section: Discussionmentioning

confidence: 99%

Farmers' Adaptation to Groundwater Shortage in the Dry Areas: Improving Appropriation or Enhancing Accommodation?

Frija¹,

Chebil

Speelman

2016

Irrig. and Drain.

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The objective of this paper is to identify farmers' strategies to adapt to groundwater shortage in vulnerable arid areas of south Tunisia. In the selected area, the potential of rainfed agriculture is very limited and groundwater is the only source of irrigation. With intensive overuse of groundwater signs of groundwater table depletion are starting to appear and farmers are becoming more concerned about water shortage. Based on a survey among farmers, we proceeded with a ‘principal component factors’ analysis followed by a ‘hierarchical clustering’ using Ward's method, in order to investigate different farmers' adaptation behaviour when faced with groundwater shortage. A set of relevant variables were used for this purpose. The cluster analysis generates three groups of farmers based on their irrigation practices, types of irrigation investment, and other related structural variables. A first group is formed by large farmers who combine both expansive strategies, by investing in enhancing groundwater appropriation, and accommodating strategies, by enhancing on‐farm management of the available resource. The second type of farmers are small and mainly focus on expansive strategies, while the third group is also composed of small farmers demonstrating purely contractive strategies, referring to reduced scale of farm operation. Copyright © 2016 John Wiley & Sons, Ltd.

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Section: Discussionmentioning

confidence: 99%

Farmers' Adaptation to Groundwater Shortage in the Dry Areas: Improving Appropriation or Enhancing Accommodation?

Frija¹,

Chebil

Speelman

2016

Irrig. and Drain.

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“…However, the data collection scheme did not consider quantifying weed control efficiency. Ricard et al (2015) suggested irrigation as an effective measure to counteract precipitation variability in the studied area. Double cropping, an efficient water use practice widespread in other parts of the continent, is considered unsuitable in this region because of the high water consumption.…”

Section: Single-constraint Modelsmentioning

confidence: 96%

“…Among them, the semiarid and subhumid Chaco were epicenters of an agricultural expansion that was favored by changes in land tenure (Goldfarb and van der Haar 2016). Agricultural expansion was also promoted by the increase in annual precipitation (approximately 18%) observed in the last decade (Ricard et al 2015) and in water use efficiency achieved by the adoption of no-till farming (Piquer-Rodríguez et al 2015). Currently, maize is being increasingly adapted by local farmers, and its expansion is expected to continue (Giménez et al 2015).…”

Section: Introductionmentioning

confidence: 99%

Drought and temperature limit tropical and temperate maize hybrids differently in a subtropical region

Casali

Rubio

Herrera

2018

Agron. Sustain. Dev.

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Although the semiarid and subhumid Chaco regions in northern Argentina have been traditionally considered marginal and unsuitable for cultivating grain maize for human and livestock nutrition, this crop is increasingly being adopted by local farmers. The low maize yields observed in the area suggest that climatic constraints limit productivity, while changes in genotypes and management may be useful to mitigate the effect of these constraints. We analyzed data from 792 farm paddocks with multivariate mixed models to identify and quantify the main environmental and management constraints to maize's yield. In addition, we used the crop model CERES-Maize to assess the potential of a temperate maize hybrid to overcome water constraints. Results from the mixed models identified the amount of rainfall during February as a primary determinant of maize yield and showed that tropical hybrids tended to withstand higher temperatures and heat stress better, while temperate hybrids performed better under conditions of water scarcity. CERES-Maize simulations suggested that temperate maize hybrids have the potential to increase grain yields from 18 to 21 kg ha −1 (14.5% moisture content) for every millimeter of rain during February. This report is the first to identify alternative roles of temperate and tropical maize hybrids for counteracting climatic risks in the studied subtropical regions. These findings will provide plant breeders urgently needed information to breed better adapted maize genotypes for the semiarid and subhumid Chaco.

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“…En segundo término, se aplicó un análisis de correspondencias múltiples (ACM) a las muestras de cada año para explorar los cambios en los componentes de la varianza, durante el período analizado. Este análisis es similar al desarrollado por Ricard et al (2015). El ACM permite reducir la complejidad multidimensional de los datos a un número menor de variables independientes que explican una porción sustancial de la varianza del set de datos original.…”

Section: Análisis Estadísticounclassified

Cambios Estructurales Y Tecnológicos De La Ganadería Del Centro Sur De Corrientes, Argentina, en El Período 2005-2015

Calvi

Urcola

Cabrini

et al. 2019

Chil. j. agric. anim. sci.

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Calvi, M. et al. Cambios en los sistemas ganaderos de Corrientes, Argentina RESUMENLa ganadería constituye una de las producciones principales de la provincia de Corrientes, Argentina. Por lo tanto, comprender sus cambios es esencial para formular e implementar planes de desarrollo más eficaces. El objetivo de este trabajo fue cuantificar y analizar los cambios en la estructura, la tecnología y la productividad de los sistemas ganaderos de Corrientes, durante el período 2005-2015. En estos años, se recopiló información sobre la superficie, existencias ganaderas y personal empleado, como también datos sobre el manejo del rebaño (rodeo) y la tasa de animales logrados, de 29 sistemas de producción. Se caracterizaron las transformaciones tanto a nivel de la muestra como a nivel de los casos individuales mediante test de medias, test de proporciones y análisis de correlaciones. Posteriormente, se aplicó un análisis de correspondencias múltiples para explorar los cambios en los componentes de la varianza. Finalmente, se realizó un agrupamiento en clústers para caracterizar la diversidad existente al final del período. Se observaron pocos cambios en el promedio de ambas muestras, pero existieron cambios considerables en la estructura y manejo de ciertos establecimientos. Los establecimientos con preponderancia de cría bovina tendieron a intensificar su producción, mientras que los casos con menores dotaciones de mano de obra incrementaron su personal. Los resultados muestran que las explotaciones de mayor escala mejoraron el manejo alimentario y reproductivo del rodeo, lo que se asoció a mayores porcentajes de destete. Al final del período, se diferenciaban dos grupos con distinta escala y tecnología, pero con índices reproductivos y productivos similares. ABSTRACTLivestock production is one of the main economic activities in Corrientes province, Argentina. Therefore, understanding its dynamics is essential to design and implement efficient development programs. The objective of this study was to quantify the structural, technological and production changes in livestock systems in Corrientes, during the period 2005-2015. In these years, data on Chilean J. Agric. Anim. Sci., ex Agro-Ciencia (2019) 35(2): 116 115-125.production area, animal stocks, number of workers, herd management and production parameters were collected from 29 farms. Average and farm-level transformations were characterized through test for mean differences, test of proportions and correlation analysis. Then, a multiple correspondence analysis was used to determine changes in components of variance. Finally, clusters were formed to characterize the diversity of farms existing at the end of the study period. On average, most variables showed slight changes. Nonetheless, substantial changes were detected on individual cases. Farms specialized in cattle tended to intensify their production, while those with lower number of workers tended to increase the amount of labor employed. The results also showed that larger farms improved feeding and reproductive ...

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Comparison of adaptative strategies to climate variability in rural areas of Argentine Chaco and US Southern Plains during the last century

Cited by 10 publications

References 29 publications

Farmers' Adaptation to Groundwater Shortage in the Dry Areas: Improving Appropriation or Enhancing Accommodation?

Farmers' Adaptation to Groundwater Shortage in the Dry Areas: Improving Appropriation or Enhancing Accommodation?

Drought and temperature limit tropical and temperate maize hybrids differently in a subtropical region

Cambios Estructurales Y Tecnológicos De La Ganadería Del Centro Sur De Corrientes, Argentina, en El Período 2005-2015

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