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Mostrando ítems 21-40 de 41
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Host genetics determines food preferences of the moth Perzelia arda (Lepidoptera: Depressariidae)
Pietrantuono, Ana Laura; Pastorino, Mario Juan; Fernandez Arhex, Valeria Cristina; Corley, Juan Carlos; Marchelli, Paula (Wiley, 2021-12)Genetic variation among host plants can influence herbivore behaviour and consequently their abundance, performance and environmental impact. In the Andean- Patagonian forest, the arboreal vegetation is dominated by species ... -
Identificación del origen genético de un rodal semillero implantado de Nothofagus obliqua a través del análisis de dos regiones inter-génicas de ADN de cloroplasto
Azpilicueta, Maria Marta; Marchelli, Paula; Aparicio, Alejandro Gabriel; Pastorino, Mario Juan (Ediciones INTA, 2021-04)En planes de forestación, tanto con fines productivos como de conservación, la correcta elección de la fuente de semilla para utilizar es un factor clave. El área productora de semilla (APS) “Trevelin” de Nothofagus obliqua ... -
Información científica clave para la gestión y conservación del ecosistema biocultural del Pewén en Chile y Argentina = Relevant scientific information for management and conservation of the Pewen biocultural ecosystem in Chile and Argentina
Sanguinetti, Javier; Ditgen, Rebecca S.; Donoso Calderón, Sergio R.; Hadad, Martín A.; Gallo, Leonardo Ariel; González, Mauro E.; Ibarra, J Tomás; Ladio, Ana H.; Lambertucci, Sergio A.; Marchelli, Paula; Mundo, Ignacio A.; Nuñez, Martin Andrés; Pauchard, Aníbal; Puchi, Paulina; Relva, María A.; Skewes, Oscar; Shepherd, John D.; Speziale, Karina L.; Vélez, María L.; Salgado Salomón, María E.; Zamorano Elgueta, Carlos (Facultad de Ciencias Forestales y Recursos Naturales, Universidad Austral de Chile, 2023-05)El bosque de Araucaria araucana (“pewén” en lengua Mapuche), con sus especies asociadas del género Nothofagus, es singular desde el punto de vista evolutivo, biológico y sociocultural. Por la interdependencia con el pueblo ... -
Integrating genetics and suitability modelling to bolster climate change adaptation planning in Patagonian nothofagus forests
Marchelli, Paula; Thomas, Evert; Azpilicueta, Maria Marta; Zonneveld, Maarten van; Gallo, Leonardo Ariel (2017)We investigated the impact of past changes in habitat suitability on the current patterns of genetic diversity of two southern beeches (Nothofagus nervosa and Nothofagus obliqua) in their eastern fragmented range in ... -
Local adaptation along a sharp rainfall gradient occurs in a native Patagonian grass, Festuca pallescens, regardless of extensive gene flow
Lopez, Aldana Soledad; Lopez, Dardo Ruben; Caballe, Gonzalo; Siffredi, Guillermo Lorenzo; Marchelli, Paula (Elsevier, 2020-03)Increasing global aridity combined with changing environmental conditions might cause irreparable alterations in arid and semiarid ecosystems. Knowledge of within-species genetic diversity and adaptive responses, especially ... -
Logging by selective extraction of best trees: Does it change patterns of genetic diversity? : The case of Nothofagus pumilio
Soliani, Carolina; Gallo, Leonardo Ariel; Marchelli, Paula; Vendramin, Giovanni Giuseppe (2016)Un amplio conocimiento de las consecuencias ecológicas y genéticas de la aplicación de las prácticas de gestión en los ecosistemas naturales es de fundamental importancia para las acciones de conservación. El principal ... -
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. ... -
Management of Nothofagus genetic resources: Definition of genetic zones based on a combination of nuclear and chloroplast marker data
Azpilicueta, Maria Marta; Gallo, Leonardo Ariel; van Zonneveld, Maarten; Thomas, E.; Moreno, Angela Carolina; Marchelli, Paula (Elsevier, 2013-08-15)Development of appropriate forest conservation and management measures for a given tree species includes the identification of distinct genetically homogeneous units across its overall distribution range, which depends on ... -
Phylogenetic relationships and intraspecific diversity of a North Patagonian Fescue: evidence of differentiation and interspecific introgression at peripheral populations
Lopez, Aldana; Azpilicueta, Maria Marta; Lopez, Dardo Ruben; Siffredi, Guillermo Lorenzo; Marchelli, Paula (2018-03)Peripheral sites usually offer suboptimal conditions for species with wide distributions, where expression of phenotypic variability and potential interspecific hybridization might be enhanced. The Patagonian steppe, the ... -
Phylogeography of two hybridizing southern beeches (Nothofagus spp.) with different adaptive abilities
Soliani, Carolina; Gallo, Leonardo Ariel; Marchelli, Paula (Springer, 2011-12-17)In phylogenetically related plant species, hybridization can influence their current genetic structure. Long-lasting hybridization may be related to persistence in shared glacial refugia, where the differential abilities ... -
Predicting the distribution of plant species from southern South America: are the hotspots of genetic diversity threatened by climate change?
Soliani, Carolina; Ceccarelli, Viviana; Lantschner, Maria Victoria; Thomas, Evert; Marchelli, Paula (Springer, 2024-01)Biodiversity in all its dimensions is being threatened by climate change and the impact of human activities. Genetic diversity is a key dimension of biodiversity underlying adaptation to global changes. Here we assess the ... -
Robles in Lagunas de Epulauquen, Argentina: previous and recent evidence of their distinctive character
Azpilicueta, Maria Marta; Pastorino, Mario Juan; Puntieri, Javier Guido; Barbero, Fernando Alvaro; Martinez Meier, Alejandro; Marchelli, Paula; Gallo, Leonardo Ariel (2014-12)The northernmost ‘robles’ of Argentina, located in Lagunas de Epulauquen (northwest Patagonia), are considered a population of Nothofagus obliqua, even though they differ in some respects from individuals of other populations ... -
Seed responses to temperature indicate different germination strategies among Festuca pallescens populations from semi-arid environments in North Patagonia
Lopez, Aldana; Marchelli, Paula; Batlla, Diego; Lopez, Dardo Ruben; Arana, María Veronica (Elsevier, 2019-04)Seed germination is one of the earliest phenotypes expressed by plants, and the accuracy to germinate in the correct time and place is essential for plant population fitness. Cues that regulate germination have been ... -
Stand development stages and recruitment patterns influence fine-scale spatial genetic structure in two Patagonian Nothofagus species
Sola, Georgina Giselle; Marchelli, Paula; Gallo, Leonardo Ariel; Chauchard, Luis Mario; El Mujtar, Veronica Andrea (Springer, 2022-05)Key message: Nothofagus alpina (Poepp. et Endl.) Oerst. and Nothofagus obliqua (Mirb.) Oerst forests have strong fine-scale spatial genetic structures. The intensity of genetic structure patterns differed according to ... -
Staying close: short local dispersal distances on a managed forest of two Patagonian Nothofagus species
Sola, Georgina Giselle; El Mujtar, Veronica Andrea; Gallo, Leonardo Ariel; Vendramin, Giovanni Giuseppe; Marchelli, Paula (Oxford University Press, 2020-05)Understanding the impact of management on the dispersal potential of forest tree species is pivotal in the context of global change, given the implications of gene flow on species evolution. We aimed to determine the effect ... -
Temperature and day length drive local adaptation in the Patagonian foundation tree species Nothofagus pumilio
Sekely, Jill; Marchelli, Paula; Arana, María Veronica; Dauphin, Benjamin; Mattera, Maria Gabriela; Pastorino, Mario Juan; Scotti, Ivan; Soliani, Carolina; Heer, Katrin; Opgenoorth, Lars (BioRxiv, 2023-04-29)Climate change alters relationships among environmental conditions and thus has the potential to change the selection pressures acting on adaptive gene variants. Using a landscape genomic approach, we show that the southern ... -
The effects of Quaternary glaciations in Patagonia as evidenced by chloroplast DNA phylogeography of Southern beech Nothofagus obliqua
Azpilicueta, Maria Marta; Marchelli, Paula; Gallo, Leonardo Ariel (Springer, 2009-03)Climatic oscillations during the Quaternary strongly affected the distribution of warm-temperate tree species, which experienced local restrictions into ice-free areas and posterior expansions. To evaluate the impact of ... -
Transcriptomic responses to drought stress in the Patagonian southern beech Nothofagus alpina
Lopez Laphitz, Rita Maria; Arana, María Veronica; Varela, Santiago Agustin; Becker, Leandro Aníbal; Soliani, Carolina; Azpilicueta, Maria Marta; Marchelli, Paula; Bellora, Nicolás (Springer Open, 2024-05)Background: Deciphering the genetic architecture of drought tolerance could allow the candidate genes identification responding to water stress. In the Andean Patagonian forest, the genus Nothofagus represents an ecologically ... -
Understanding introduction history: Genetic structure and diversity of the edible ectomycorrhizal fungus, Suillus luteus, in Patagonia (Argentina)
Pildain, Maria Belen; Marchelli, Paula; Azpilicueta, Maria Marta; Starik, Cristian; Barroetaveña, Carolina (Taylor & Francis, 2021-06)Suillus luteus is a common ectomycorrhizal (EM) fungus associated with several Pinus species. It is distributed throughout the Northern Hemisphere and has been introduced into South America and New Zealand. We examined the ... -
Water-mediated changes in plant–plant and biological soil crust–plant interactions in a temperate forest ecosystem
Pissolito, Clara; Garibotti, Irene Adriana; Varela, Santiago Agustin; Arana, María Veronica; Gonzalez Polo, Marina; Marchelli, Paula; Bruzzone, Octavio Augusto (Copernicus Publications, 2019-04-09)In the quest to understand how biotic interactions respond to climate change, one area that remains poorly explored is how interactions involving organisms other than vascular plants will respond. However the interactions ...