Leonardo Gallo's research while affiliated with National Scientific and Technical Research Council and other places

Publications (30)

Article
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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 species, stand development stages, life stages, and spatial arrangement of regeneration groups. This data becomes useful for forest m...
Chapter
Los Bosques Andino Patagónicos proveen una amplia gama de servicios ecosistémicos que incluyen servicios de provisión, regulación, soporte y culturales. Estos bosques han sido utili - zados por los habitantes originales de la Patagonia, pero con la llegada de nuevos pobladores a la región a finales del siglo XIX su utilización fue creciendo con el...
Article
Climate models for North Patagonia in Argentina project dryer conditions, due to a decrease in mean precipitation combined with an increase in mean temperatures. The temperate mixed Nothofagus forest, which exists along a steep precipitation gradient, could be directly impacted. For this study, we evaluated the influence of mean climate on the grow...
Article
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Significant gaps remain in understanding the response of plant reproduction to environmental change. This is partly because measuring reproduction in long-lived plants requires direct observation over many years and such datasets have rarely been made publicly available. Here we introduce MASTREE+, a dataset that collates reproductive time-series d...
Poster
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Salix x argentinensis es un híbrido natural entre la especie introducida S. babylonica y la especie nativa S. humboldtiana, espontáneo del delta del Paraná en la provincia de Buenos Aires. Se utiliza como protector de riberas en ríos y lagunas en las provincia de Santa Fe. La determinación de ejemplares en la provincia de Neuquén es una novedad. El...
Poster
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Comparación de los patrones de ramificación de Salix humboldtiana y Salix ×fragilis.
Article
The conditions faced by edge populations of a tree species may affect the architecture of individual trees. The latitudinally broad range of Salix humboldtiana Willd. encompasses tropical to cold-temperate climatic regions, with its southernmost population in central Patagonia. We expected S. humboldtiana trees from the southern-edge population to...
Article
En los últimos 10 años se han perdido en Argentina por corta o habilitación de tierras para la agricultura y ganadería unas 285.000 ha de bosque nativo productivo, siendo la pérdida general en los últimos 100 años de alrededor de 70 millones de hectáreas. La extracción de la madera del bosque nativo conlleva no solo a una ineficiente utilización de...
Chapter
The Andean-Patagonian forests are the southernmost temperate forests in the world spreading over a thin strip at both sides of the Andes Mountains. This chapter introduces to a section of the book devoted to different species of these forests. Generalities and particularities of the Andean-Patagonian forests such as disturbs, endemisms, and drastic...
Chapter
The genus Cedrela comprises endangered and highly valuable species in the forestry sector. Based on molecular genetics, we describe the natural distribution areas, ecological niches, and current state of four Cedrela species distributed in Argentina, in order to apply proper conservation strategies, guide germplasm collection, and design suitable s...
Chapter
Raulí is an iconic species of the temperate sub-Antarctic forests due to its hardwood quality of pinkish tones. Because of its ecological and economic relevance, it is under conservation within national parks and being domesticated for plantation purposes. In this chapter, we present the state of the art of the species in Argentina. General feature...
Chapter
Nothofagus pumilio and N. antarctica are main components of the Andean Patagonian Temperate forests that occur along all the environmental gradients that characterize the Patagonian region. In this chapter, their main botanical features and natural ranges are presented, as well as the state of the art in genetic studies. Phylogeographic patterns ba...
Chapter
Nothofagus obliqua forests in Argentina extend over a wide latitudinal gradient but highly fragmented and locally restricted. The relevance of this species relies in its high wood quality and tolerance to warmer niches, as those predicted under climate change. In this chapter, we describe the species characteristics and natural distribution range a...
Chapter
This chapter deals with two emblematic species of the Argentine forests: Araucaria araucana, a conifer with a restricted distribution area and considered a living fossil, and Salix humboldtiana, a willow with a continental distribution but the only native to this country and particularly threatened in Patagonia. Each species is presented in a separ...
Poster
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Estrategia utilizada •El sistema consta de un recipiente para alojar agua de 100 x 50 cm, calefacción del agua para mantener la misma en condiciones de temperatura constante, aireación, sostén de las estacas de árboles y un cobertor que mantiene la humedad. En el caso de la especie en estudio se utilizaron estacas de 20 cm de longitud y entre 1 y 2...
Article
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 of logging on gene flow distances in two Nothofagus species from temperate Patagonian forests having high ecological relevance...
Article
Full-text available
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 be affected by site conditions and forest structure. The objective of this study was to determine how regeneration establishment...
Article
Within-tree variation in fruit and seed production is little understood for anemophilous trees. This study contributes to identifying this variation for Nothofagus obliqua and N. nervosa by assessing the relative fruit production of reproductive shoots and patterns of filled fruit production in relation to flower position in the tree crown and alon...
Presentation
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The objective of this work is to integrate dendrogeomorphological techniques to the mapping and modeling of the recent distribution of vegetation of the riverine landscape, as an indicator of the local effect of climate change. A model was developed that relates the distribution of the tree and the age of patches of woody vegetation to the height a...
Article
Full-text available
Lagunas de Epulauquen forests (36°49'S; 71°04'W) have been considered the northernmost population of Nothofagus obliqua in Argentina. Recently, however, its taxonomic status has been questioned due to its morphological, architectural and genetic distinctiveness. The convergence of migratory routes and hybridization with Nothofagus alpina are the tw...
Book
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En este manual brindamos información sobre las bases para la definición de zonas genéticas en los bosques de raulí y roble pellín en Argentina y presentamos las zonas definidas en ambas especies con el fin de ser utilizadas como fuente de semilla segura y recomendada en acciones de plantación y restauración de sus bosques en Argentina. Asimismo, pr...
Poster
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Variación en ritmo de crecimiento en plántulas de Nothofagus pumilio en ensayo de ambiente común de vivero
Poster
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El propósito de este trabajo fue evaluar la variación genética adaptativa de la lenga en el oeste de la provincia de Chubut en los gradientes precipitaciones y latitudinal. Se espera que dicha variación genética obedece a factores históricos y factores ecológicos actuales, los cuales en forma individual o combinada definen los patrones de variación...
Conference Paper
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RESUMEN Las planicies de inundación de los ríos norpatagónicos, experimentan procesos de cambio y configuración de neo-ecosistemas riparios con bosques de salicáceas exóticas. El objetivo de este trabajo es relacionar parches de vegetación con procesos geomorfológicos asociados a los regímenes hidrológicos de los tramos inferiores de los ríos Limay...
Article
Full-text available
Phenotypic selection generally reduces the variability of both the selected trait and other associated characteristics. Some species show a negative strong relationship between growth traits and wood density. In the present study, basic wood density was assessed in a group of 23 control trees and 25 Pinus ponderosa plus trees, selected for growth a...
Poster
Full-text available
Se evaluó el efecto de plantas nodrizas y procedencias en el establecimiento de Nothofagus pumilio con fines de restauración. No hubo efecto en los orígenes en sobrevivencia y crecimiento inicial, pero sí para planta nodriza, facilitando la sobrevivencia y daño por ramoneo de liebre
Poster
Full-text available
Para diseñar estrategias de manejo y conservación de poblaciones forestales naturales es importante contar con información sobre su variabilidad en caracteres cuantitativos (potencialmente adaptativos). La lenga (Nothofagus pumilio) es la principal especie forestal nativa de Patagonia en función del área que ocupa. En este trabajo se evalúa la vari...
Presentation
Full-text available
Uno de los métodos empleados para obtener semilla genéticamente mejorada para uso inmediato es la cosecha de APS (Áreas Productoras de Semilla) o rodales semilleros. Normalmente ésta se usa hasta que comiencen a producir semilla los huertos semilleros. El método consiste en eliminar los fenotipos de mala calidad, conservando los ejemplares de buena...

Citations

... Our aim was to explore whether masting behaviours have wider implications for species and phenotypic diversification beyond their selective advantages for individual fitness [11]. We exploited a new database of 5057 population-level reproductive time series from 682 species-the largest synthesis of reproductive time-series data to date [25]. We first explored the utility of this database for evolutionary inference by comparing biases in the macroevolutionary characteristics of its species with the wider plant ToL. ...
... With the exception of a few conifer tree species, Patagonian temperate forests are mostly composed of evergreen and deciduous angiosperm tree species, including southern beech trees (Nothofagus genus) which grow in association with non-Nothofagus species of broadleaf evergreen trees (Veblen et al., 1996). Southern beeches differ from the evergreen non-Nothofagus tree species in terms of bark and wood properties (Ansaldo et al., 2021;Dettmann et al., 2013;Soliani et al., 2021), hosting distinctive assemblages of beetle species (Elgueta and Arriagada, 1989). Thus, beetle communities should respond differently to internal wood decay depending on the mortality status and species of trees. ...
... ECM Eucalyptus hosts were present in SSA until the late Oligocene but have been absent since that time (Gandolfo et al. 2011;Hermsen et al. 2012;Hill et al. 2017). The geographic isolation of Nothofagaceae forests from other ECM species in SSA for more than 25 MY (Marchelli et al. 2021), and the unique community structure of Nothofagus ECM fungal communities in SSA (Tedersoo et al. 2012), likely make these communities particularly vulnerable to the effects of ECM fungi invasions. ...
... The author noted that wood density values at 300 m, 750 m, and 1200 m were 0.662 g/cm 3 , 0.673 g/cm 3 , and 0.681 g/cm 3 , respectively. Martinez-Meier et al. (2011) reported that the wood density of ponderosa (Pinus ponderosa Dougl. Ex Laws.) had a positive correlation with altitude. ...
... The significant fine-scale spatial genetic structure has been reported for populations of trees of N. alpina and N. obliqua (Marchelli et al. 2012;Sola et al. 2020b). This pattern was stronger for N. obliqua than for N. alpina, a result consistent with their differences in gene dispersal parameters (Sola et al. 2020b). ...
... As a consequence, the remnant overstory trees changed their crown shape and growth form (e.g., trunk forking), which could increase the crown volume and leaf litter production in relation to their basal area (Magnin et al. 2021). Moreover, the regeneration recruitment in the harvested areas increased leaf litter in the stands, but not seed fall due to young Nothofagus trees that did not reach reproductive age (Torres et al. 2020). ...
... Significant differences were found between the two provenances in the average early frost damage (Fig. 5). A study of the architecture of the species was initiated also with the Patagonian provenances (Salgado et al. 2018(Salgado et al. , 2019. In the clonal bank of Bariloche, the length, diameter and number of nodes of annual shoots of 15 clones of Negro and Chubut provenances were recorded every ten days in the 2017/2018 season. ...
... N. alpina and N. obliqua are both wind-pollinated, outcrossing, and anemochorous tree species that exhibit a mast seeding strategy every 2 to 4 years. However, regeneration recruitment in mixed forests also depends on niche differentiation between both species (Dezzotti et al. 2003;Sola et al. 2020a) which in turn influence spatial demographic structure. Therefore, if spatial heterogeneity in the demographic structure and in the recruitment pattern of the regeneration occurs, it may affect FGSS within populations. ...
... Los antecedentes publicados sobre semillas corresponden a las especies de mayor distribución como ciprés de la cordillera, lenga y ñire, así como a otras de relevancia forestal como raulí y roble pellín. Estos trabajos se refieren principalmente a aspectos ecológicos del banco de semillas (Damascos et al., 1999;Raffaele & Gobbi, 1996;Urretavizcaya & Defossé, 2004;Varela et al., 2006) y del proceso de regeneración (Bahamonde et al., 2011;Martínez Pastur et al., 2008;Rusch, 1989), a aspectos de variación geográfica y genética (Breitembücher & Gallo, 1995;Marchelli & Gallo, 1999;Mondino et al., 2013;Pastorino & Gallo, 2000, 2009, y a la producción y dispersión (Cellini, 2010) de semillas. Son escasos, sin embargo, los trabajos específicos sobre calidad de semillas bajo normas estandarizadas (Contardi, 1995), como así también sobre los factores que pueden afectar su formación. ...
... Even more, these species are particularly interesting as they widely differ in their foliar traits and geographic distribution (see Table 1; Appendix 1). A. chilensis, N. antarctica, N. dombeyi, and N. pumilio grow naturally in the latitude of the experimental site, and only N. pumilio naturally grows at approximately 200 m higher than the average experimental plots' altitude (Veblen et al. 1996). Even though, N. alpina and N. obliqua naturally grow at lower latitude, our experimental site included their potential planting area and genetic zone (Barbero et al., 2011;Azpilicueta et al., 2016). ...