Andrea CosacovNational Scientific and Technical Research Council, Córdoba - National University of Cordoba, Argentina · IMBIV
Andrea Cosacov
Doctor of Biology
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Introduction
Skills and Expertise
Publications
Publications (97)
Management and conservation programs require accessible scientific evidence to effectively plan and achieve
their goals. Facing regional and species-specific threats, Gonopterodendron sarmientoi, an endangered tree native
to the Gran Chaco region, requires scientific evidence to support management and conservation actions, notably
in forest managem...
Introduction: Integrating genetic data into conservation management decisions is a challenging task that requires strong partnerships between researchers and managers. Conservation in Latin America is of crucial relevance worldwide given the high biodiversity levels and the presence of hotspots in this region.
Methods: We conducted a survey across...
Geoclimatic events driving South American aridization have generated biota differentiation due to barriers and new environment formation. New environments allow species climatic niche evolution, or the geographical expansion of an existing one. Understanding the role these processes play may clarify the evolution of South American biota. Gomphrena...
Dr. Matias C. Baranzelli (Argentina) travelled to the Universidad Nacional Autónoma de Mexico as a PAGES-IAI International Mobility Research Fellow (18 May – 19 August 2022) to study the response to climate change since the last 3 million years on flowering plants, mammals, birds and amphibians, considering three levels of biodiversity: genetic div...
Aspidosperma quebracho-blanco is a key species of the Gran Chaco, one of the most threatened subtropical woodlands in South America. By combining ecological niche modeling (ENM) and population genetic analysis, we explored the impact of land use and climate change on the species distribution with the aim to map the geography of its vulnerability an...
Gonopterodendron sarmientoi —Palo Santo— es una especie forestal típica chaqueña, presente en bosques mixtos o formando densos bosques monotípicos (palosantales). Por pérdida de hábitat y alta explotación, G. sarmientoi se encuentra amenazada, lo que genera la necesidad de información orientada a futuros programas de manejo y conservación. El objet...
Intraspecific genetic diversity (IGD), the fundamental dimension of biodiversity, is scarcely considered in the context of anthropogenic impact at regional and global scales. Here, encouraged by the knowledge about the effect of past climate changes that shaped IGD at the community level, we evaluated how current land use and future climate changes...
Mentor relationships are crucial to retention, success, and wellbeing of women and underrepresented minority scientists in academia. A network of diverse mentors may support achieving long-term career goals, advancement, and retention of both mentors and mentees, thus enhancing diversity, equity, and inclusion initiatives. Diversified mentorship is...
Devastadores fuegos arrasan las Sierras de Córdoba. La Tierra se despliega como una partitura con la que el sol toca una sinfonía de la contaminación en la que se figura el «antropoceno» —medida del tiempo para el destructivo paso de la humanidad por el planeta—. Un funeral en un invernadero del Jardín Botánico de Buenos Aires es expresión de duelo...
Calceolaria polyrhiza is a perennial herb distributed in southern South America. The species is highly polymorphic and includes four described morphotypes that were previously considered different species. We performed a detailed study of the karyotype of each morphotype considering at least two localities for each one, with the aim of contributing...
Background and Aims
The Centre–Periphery Hypothesis posits that higher species performance is expected in geographic and ecological centres rather than in peripheral populations. However, this is not the commonly found pattern; therefore, alternative approaches, including the historical dimension of species geographical ranges should be explored. M...
Accurate taxonomic identification of alien species is crucial to detect new incursions, prevent or reduce the arrival of new invaders and implement management options such as biological control. Globally, the taxonomy of non-native Prosopis species is problematic due to misidentification and extensive hybridization. We performed a genetic analysis...
Organism shape changes predictably during ontogeny, resulting in specific patterns of ontogenetic allometry. In several plant and animal lineages, among‐species variation in the shape of mature organisms mirrors variation along their growth trajectories. Hence, ontogenetic allometry is an important bias in evolution. This bias should be stronger at...
NOTE: This work has gone through the peer-review process and was finally published in Nature Communications: https://www.researchgate.net/publication/359466937_Community_voices_the_importance_of_diverse_networks_in_academic_mentoring -----
Effective mentoring implies a two-way relationship in which mentees obtain benefits from the knowledge and tr...
The “algarrobos complex of species” (Prosopis spp.) has its center of diversity in the “Gran Chaco Americano.” Hybrid swarms and a continuum of morphological and genetic variation difficult the taxonomic identification as well as the definition of conservation and management units. Therefore, the development and use of morphological markers in leav...
This chapter gathers six species that have been extensively used from the natural forest, but that are not included in any domestication programme yet. These species from the Chaco region belong to genera Acacia, Prosopis and Gonopterodendron. Main characteristics of the different species such as botanical, ecological and usage features (timber and...
The joint effect of the Andes as a geographical barrier and the Quaternary glaciations as promoters of genetic divergence remains virtually unexplored in southern South America. To help fill this knowledge gap, in this study we investigated the demographic history of Centris cineraria, a solitary bee mainly distributed in Patagonia. We used mitocho...
The joint effect of the Andes as a geographical barrier and the Quaternary glaciations as promoters of genetic divergence remains virtually unexplored in southern South America. To help fill this knowledge gap, in this study we investigated the demographic history of Centris cineraria, a solitary bee mainly distributed in Patagonia. We used mitocho...
The Gran Chaco is the largest dry forest in South America. One
of the key taxa of this biome is the genus Prosopis (Fabaceae)
which contains several economically important species. One of
the characteristics of this genus is its natural capacity to
exchange genetic information among congeneric species,
generating zones of high morphological and gen...
Shared genetic patterns within a community of ecologically distinct species may reflect the role of past geoclimatic events imprinting species evolutionary history. Although Pleistocene glaciations are the most important processes evoked as drivers of these shared patterns, in some regions Quaternary volcanic activity should also be considered as a...
Shared genetic patterns within a community of ecologically distinct species may reflect the role of past geoclimatic events imprinting species evolutionary history. Although Pleistocene glaciations are the most important processes evoked as drivers of these shared patterns, in some regions Quaternary volcanic activity should also be considered as a...
The intraspecific evolutionary history of South American xerophytic plant species has been poorly explored. The tree species Prosopis chilensis has a disjunct distribution in four South American regions: southern Peru, southern Bolivia, central-western Argentina and central Chile. Here, we combined phylogeographical (based on chloroplast and nuclea...
The intraspecific evolutionary history of South American xerophytic plant species has been poorly explored. The tree species Prosopis chilensis has a disjunct distribution in four South American regions: southern Peru, southern Bolivia, central-western Argentina and central Chile. Here, we combined phylogeographical (based on chloroplast and nuclea...
Neotropical Dry Forests are important biodiversity hotspots characterized by intermediate to high levels of species richness and endemism. A possible explanation for these characteristics is that such forests have been less affected by drastic glacial impacts than other biomes. Using two approaches, geo-statistical phylogeography, based on two chlo...
A key to understanding the origin and identity of young species lays on the knowledge of the Quaternary climatic oscillations’ effect on gene flow and vicariance. Even though the effect of climatic fluctuations is relatively well understood for southern hemisphere plant species, little is known about their effect on the evolutionary histories of sp...
Effects of Pleistocene climatic oscillations on plant phylogeographic patterns are relatively well studied in forest, savanna and grassland biomes, but such impacts remain less explored on desert regions of the world, especially in South America. Here, we performed a phylogeographical study of Monttea aphylla, an endemic species of the Monte Desert...
Internal primer sequences designed for trnQ–rpL16 region.
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Outgroup species, locality, coordinates, and voucher number in CORD.
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Document.
Permission to publishmap shapefiles.
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Sampling sites, geographical coordinates, sample size, elevation, and molecular diversity indexes of the sampled Monttea aphylla populations in the South American Arid Diagonal for each data set.
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Location for each set of primers in the trnQ–rpL16 sequence.
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Summary of the results from the species-specific tuning of the ecological niche modelling carried out with 10 replicated runs under the current climatic conditions.
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Curetted database of the presence points for M. aphylla and the associated absence data used in the potential distribution models.
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Percentage contribution of climatic variables to the past (LIG and LGM) and current potential distributions of Monttea aphylla.
(DOC)
Quaternary climatic changes impacted species’ demography and distribution worldwide. Although response to climate change could have been modulated by mutualistic interactions with other species, studies exploring the dynamics of these interactions and their role facilitating species persistence during past climatic variations are scarce. In this wo...
p>Las sierras de Córdoba y San Luis albergan una gran riqueza de especies endémicas. Un grupo importante de ellas muestra una distribución disyunta entre ambas serranías. Hasta la actualidad no existían estudios genéticos que permitieran inferir procesos históricos asociados a este patrón. Con este propósito caracterizamos el área de distribución y...
Geographical range and spatial structure of genetic lineages in Sophora linearifolia (Fabaceae), an endemic shrub of Central Argentina. A large number of endemic species occur in the Sierras of Córdoba and San Luis. A significant group of them shows a disjunct geographic distribution between these two mountain regions. Until the present study, ther...
Quaternary environmental changes substantially impacted the landscape and promoted rapid evolutionary changes in many species; however, analyses of adaptive phenotypic variation in plants have usually neglected the underlying historical context. Here we associate phylogeography and phenotypic evolution by analyzing the divergence of Calceolaria pol...
The coastal deserts of northern Chile show an important latitudinal gradient of aridity with more arid areas to the north of the Atacama Desert than to the south. Several plant species have disjunct distributions that correspond with the extremes of this latitudinal gradient. In this study, using genetic (chloroplast and nuclear DNA), morphological...
Background and AimsThe underlying evolutionary processes of pollinator-driven floral diversification are still poorly understood. According to the Grant-Stebbins model speciation begins with adaptive local differentiation in the response to spatial heterogeneity in pollinators. Although this crucial process links the micro- and macroevolution of fl...
Background and Aims The underlying evolutionary processes of pollinator-driven floral diversification are still poorly understood. According to the Grant –Stebbins model speciation begins with adaptive local differentiation in the response to spatial heterogeneity in pollinators. Although this crucial process links the micro-and macroevo-lution of...
Climate and landscape changes that occurred in Patagonia during the Pleistocene presumably led to the ample biodiversity that currently characterizes the region. Many Patagonian species constitute unresolved complexes that may be related to these environmental changes. Accordingly, discriminating among taxonomic entities within an endemic and widel...
Monttea aphylla flowers simultaneously produce oil and nectar, rewards known to differentially attract ecologically and functionally distinct pollinators. We examined whether geographical differentiation occurred for rewards, and whether this could be explained by spatially heterogeneous pollinator guilds and climate. Rewards were measured across t...
In order to assess the impact of precipitation changes during Pleistocene glaciations on plant species of the Patagonian steppe, a phylogeographical study of the endemic shrub Anarthrophyllum desideratum was performed.
Southern Patagonia: Argentina and Chile.
Chloroplast intergenic spacers trnS–trnG and rpoB–trnC were sequenced for 264 individuals...
In order to assess the impact of precipitation changes during Pleistocene glaciations on plant species of the Patagonian steppe, a phylogeographical study of the endemic shrub Anarthrophyllum desideratum was performed.
Southern Patagonia: Argentina and Chile.
Chloroplast intergenic spacers trnS–trnG and rpoB–trnC were sequenced for 264 individuals...
Indagar sobre la diferenciación interpoblacional de caracteres florales implicados en la interacción planta-polinizador, y sobre su relación con la divergencia de polinizadores a escala geográfica, es fundamental para dilucidar los factores que influyen en los procesos de adaptación y especialización biológica. Los sistemas conformados por plantas...
The study of intraspecific differentiation of floral characters involved in plant-pollinator interaction, and of its relationship with biotic and abiotic factors is essential to elucidate the factors affecting biological adaptation and specialization. Systems involving oil-secreting plants and oil-collecting bees are considered one of the most spec...
Phylogeographical inferences, applied in a comparative framework across multiple species at a regional scale, provide the means for detecting regional and landscape-level patterns of biodiversity, which are important for understanding macroecology and evolution in a geographical mosaic against a backdrop broadly impacted by geological events. Altho...
Aim We perform a phylogeographical study of an endemic Patagonian herbaceous plant to assess whether geographical patterns of genetic variation correspond to in situ Pleistocene survival or to glacial retreat and post-glacial expansion. We also seek to determine the locations of potential glacial refugia and post-glacial colonization routes.
Locati...
Biogeographical patterns and diversification processes in Andean and Patagonian flora are not yet well understood. Calceolaria is a highly diversified genus of these areas, representing one of the most specialized plant-pollinator systems because flowers produce nonvolatile oils, a very unusual floral reward. Phylogenetic analyses with molecular (I...