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Mostrando ítems 1-20 de 23
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Assessing soil microbial biodiversity as affected by grazing and woody vegetation cover in a temperate savannah
El Mujtar, Veronica Andrea; Gregorutti, Viviana Carolina; Eclesia, Roxana Paola; Wingeyer, Ana Beatriz; Lezana, Lucrecia; Canavelli, Sonia Beatriz; Tittonell, Pablo Adrian (Wiley, 2021-04-07)Although it is well established that land use and management affects soil microbial biodiversity, with consequences for soil-mediated ecosystem services, knowledge on human-induced variability in soil bacterial and fungal ... -
Characterisation and transferability of transcriptomic microsatellite markers for Nothofagus species
El Mujtar, Veronica Andrea; Lopez, Micaela; Amalfi, Sabrina; Pomponio, Maria Florencia; Marcucci Poltri, Susana Noemi; Torales, Susana Leonor (2017-07)Discriminant molecular markers are required for research on population genetics, as well as evolutionary studies involving identification of hybrids and parental species, or detection of the genome regions under selection. ... -
Crecimiento diferencial de clones de maqui seleccionados en Argentina, según su cultivo bajo distintas condiciones de radiación solar y riego = Differential growth of selected maqui clones in Argentina, according to their cultivation under different conditions of solar radiation and irrigation
Roldan, Cecilia Soledad; El Mujtar, Veronica Andrea; Caballe, Gonzalo; Mazzoni, Ariel Omar; Berli, Federico Javier; Marchelli, Paula (Facultad de Ciencias Forestales y Recursos Naturales, Universidad Austral de Chile, 2023-05)El maqui (Aristotelia chilensis) ha cobrado gran importancia por ser uno de los berries con mayores niveles de capacidad antioxidante hasta ahora conocido y cuya demanda internacional se ha incrementado. Actualmente no ... -
Development of genomic resources for Nothofagus species using next‐generation sequencing data
El Mujtar, Veronica Andrea; Gallo, Leonardo Ariel; Lang, T.; Garnier‐Géré, Pauline (Wiley, 2014-11)Using next‐generation sequencing, we developed the first whole‐genome resources for two hybridizing Nothofagus species of the Patagonian forests that crucially lack genomic data, despite their ecological and industrial ... -
Differentiation in phenology among and within natural populations of a South American Nothofagus revealed by a two-year evaluation in a common garden trial
Duboscq Carra, Virginia Gisela; Arias Rios, Jorge Andrés; El Mujtar, Veronica Andrea; Marchelli, Paula; Pastorino, Mario Juan (Elsevier, 2020-03-15)Phenological traits are crucial for understanding adaptation to climate change due to their genetic control and association with abiotic factors. However, few data on phenology patterns are available for South American ... -
Ecosystem services and disservices associated with pastoral systems from Patagonia, Argentina –A review
Tittonell, Pablo Adrian; Hara, Sofia Maria; Alvarez, Valeria Esther; Aramayo, Maria Valeria Del Luján; Bruzzone, Octavio Augusto; Easdale, Marcos Horacio; Enriquez, Andrea Soledad; Laborda, Luciana; Trinco, Fabio Daniel; Villagra, Edgar Sebastian; El Mujtar, Veronica Andrea (EDP Sciences, 2021-11-11)Pastoral systems worldwide secure rural livelihoods in the harshest environments on Earth. Their low productivity per area unit or head makes them the subject of much criticism with regard to their environmental impact, ... -
The effect of silvicultural management on the genetic diversity of a mixed Nothofagus forest in Lanín Natural Reserve, Argentina
Sola, Georgina Giselle; El Mujtar, Veronica Andrea; Gallo, Leonardo Ariel; Tsuda, Yoshiaki; Vendramin, Giovanni Giuseppe (2016-03)El conocimiento del impacto de las prácticas de manejo forestal es crucial para permitir el uso de los recursos naturales garantizando al mismo tiempo la sostenibilidad de la variación genética, que es esencial para la ... -
Emerging responses to the COVID-19 crisis from family farming and the agroecology movement in Latin America – A rediscovery of food, farmers and collective action
Tittonell, Pablo Adrian; Fernandez, Manuela Teresa; El Mujtar, Veronica Andrea; Viegas Preiss, Potira; Sapura, Silvia; Laborda, Luciana; Mendonça, M.A.; Alvarez, Valeria Esther; Fernandes, G.B.; Petersen, Paulo F.; Cardoso, Irene María (Elsevier, 2021-05)In Latin America, the so-called informal sector associated with family farming and the agroecology movements were instrumental at coping with and adapting to the COVID-19 challenges. OBJECTIVE: To assess the nature and ... -
Genetic variation of leaf pigment content in a southern beech
Arias Rios, Jorge Andrés; El Mujtar, Veronica Andrea; Pastorino, Mario Juan; Marchelli, Paula (Springer, 2022-07)Leaf pigment concentration varied among populations, watersheds and between two consecutive years. The highest concentration of pigments was found in 2018, but both years showed the same trend among populations. Physiological, ... -
Lexical analysis improves the identification of contextual drivers and farm typologies in the assessment of transitions to agroecology through TAPE – A case study from rural Nicaragua
El Mujtar, Veronica Andrea; Zamor, Ronie; Salmerón, Francisco; Guerrero, Adela del Socorro; Laborda, Luciana; Tittonell, Pablo Adrian; Hogan, Rose (Elsevier, 2023-06)CONTEXT: The Tool for Agroecological Performance Evaluation (TAPE) has been developed to assess the degree of transition to agroecology (Step 1) and the agroecological performance (Step 2) of family farms. However, while ... -
Long-term monitoring reveals the effect of precipitation and silviculture on Nothofagus regeneration in Northern Patagonia mixed forests
Sola, Georgina Giselle; Mateo, Camila; Dezzotti, Alejandro; Marchelli, Paula; Attis Beltrán, Hernán; Sbrancia, Renato; Chauchard, Luis Mario; González Peñalba, Marcelo; Lara, Martín; El Mujtar, Veronica Andrea (Springer, 2024-04)Background: Tree regeneration is a key component of resilience because it promotes post-disturbance recovery of forests. Northwestern Patagonia from Argentina is occupied by Nothofagus alpina (Na), N. obliqua (No), and N. ... -
“Mal del ciprés”: búsqueda de la causa más probable de daño mediante un análisis deductivo y comparativo = “Cypress Mortality”: search the more probably damage cause by means of deductive and comparative analysis
El Mujtar, Veronica Andrea; Andenmatten, Ernesto (Facultad de Ciencias Forestales y Recursos Naturales, Universidad Austral de Chile, 2007)The “cypress mortality” (“mal del ciprés”) is a disease of unknown causes, which affects cordillera cypress (Austrocedrus chilensis) in Argentina. In this work a basic guide to diagnosing plant diseases and to compare the ... -
Micro-Environmental Variation in Soil Microbial Biodiversity in Forest Frontier Ecosystems—Implications for Sustainability Assessments
Alvarez, Valeria Esther; El Mujtar, Veronica Andrea; Salles, Joana Falcão; Xiu, Jia; Cardozo, Andrea; Tittonell, Pablo Adrian (MDPI, 2024-02)Soil health indicators based on microbial biodiversity are increasingly used in agricultural sustainability assessments. However, little is known about how microbial communities vary within micro-environmental gradients ... -
Mitochondrial DNA lineages and genetic variation of early growth traits in the Argentinean breeding population of Pinus ponderosa Douglas ex C. Lawson
Aparicio, Alejandro Gabriel; El Mujtar, Veronica Andrea; Azpilicueta, Maria Marta; Martinez Meier, Alejandro; Mondino, Victor Alejandro (Springer, 2024-03)In the Andean-Patagonian region of Argentina, Pinus ponderosa Douglas ex C. Lawson is the most widely cultivated forest tree species. Its breeding program, started in 1998, is now progressing towards the establishment of ... -
Mixed Nothofagus forest management: a crucial link between regeneration, site and microsite conditions
Sola, Georgina Giselle; El Mujtar, Veronica Andrea; Attis Beltran, Hernan; Chauchard, Luis Mario; Gallo, Leonardo Ariel (Springer Nature, 2020)Canopy openings due to harvesting practices constitute a disturbance that changes the environmental conditions of microsites. Its impact on the relative performance of the regeneration of different tree species could also ... -
Nutrient source, management system and the age of the plantation affect soil biodiversity and chemical properties in raspberry production
Prack McCormick, Barbara; El Mujtar, Veronica Andrea; Cardozo, Andrea Gabriela; Alvarez, Valeria Esther; Rodriguez, Hernan Adrian; Tittonell, Pablo Adrian (Elsevier, 2022-07)Soil biodiversity is the driving force behind most soil processes. While potentially improving plant productivity and food quality, it can be negatively affected by land use and soil management. Raspberry production is ... -
Pattern of natural introgression in a Nothofagus hybrid zone from South American temperate forests
El Mujtar, Veronica Andrea; Sola, Georgina Giselle; Aparicio, Alejandro Gabriel; Gallo, Leonardo Ariel (Springer-Verlag Berlin Heidelberg, 2017-03-29)Interspecific gene flow is a common phenomenon in Nothofagaceae species; however, the dynamics of introgression in hybrid zones remains largely unknown. We focused on two ecologically and morphologically different Nothofagus ... -
Role and management of soil biodiversity for food security and nutrition; where do we stand?
El Mujtar, Veronica Andrea; Muñoz, Nacira Belen; Prack Mc Cormick, Barbara; Pulleman, Mirjam M.; Tittonell, Pablo Adrian (Elsevier, 2019-03)Soils host diverse communities that support and regulate ecosystem functions, thereby affecting plant production and resource use efficiencies. There is increasing evidence that agricultural intensification affects soil ... -
Searching for molecular insight on hybridization in Nothofagus spp. forest at Lagunas de Epulauquen, Argentina = Estudio de la hibridación a nivel molecular en bosques de Nothofagus spp. en Lagunas de Epulauquen, Argentina
Azpilicueta, Maria Marta; El Mujtar, Veronica Andrea; Gallo, Leonardo Ariel (2016)Los bosques en Lagunas de Epulauquen (36º49’S; 71º04’O) han sido considerados como la población más septentrional de Nothofagus obliqua en Argentina. En años recientes se ha cuestionado su verdadero estatus. La convergencia ... -
Sex-related difference in susceptibility to cypress mortality in Austrocedrus chilensis from Northwestern Patagonia (Argentina) = Susceptibilidad diferencial al mal del ciprés entre sexos de Austrocedrus chilensis en la Patagonia (Argentina)
El Mujtar, Veronica Andrea; Pareja Perdomo, Mariano; Gallo, Leonardo Ariel; Grau, Oscar (Facultad de Ciencias Forestales y Recursos Naturales, Universidad Austral de Chile, 2012)Female and male individuals of dioecious species have different reproductive functions and sex-related differences have been reported in growth rate, age at maturity, size, spatial distribution and physiological responses ...