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Species respond idiosyncratically to environmental variation, which may generate phenological mismatches. We assess the consequences of such mismatches for solitary bees. During 9 years, we studied flowering phenology an...

Em um ensaio de pastejo sob lotação contínua avaliaram-se as taxas de aparecimento, mortalidade e sobrevivência, a porcentagem de florescimento e a densidade populacional de perfilhos basilares em uma pastagem de Bra...

Egon Vielrose was an outstanding Polish demographer, statistician and econometrician. He studied mathematics at Warsaw University and economics at the Higher School of Trade and then he qualified as an assistant professo...

Avaliaram-se a demografia de perfilhos, a composição morfológica do pasto, o índice de área foliar (IAF), a taxa de acúmulo de massa seca de forragem (TAcMS) e os teores de proteína bruta, fibra em detergente neut...

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, es...

Owl monkeys are small monogamous primates ranging over a wide area extending from Panamá to the Chaco region of northern Argentina. The Chaco, an alluvial plain covering over one million km2 of Argentina, Bolivia, Brazi...

Studying demographic changes in past human populations is of great interest due to their role in processes of cultural change as well as the biological evolution of populations. Despite this, a general consensus about th...

We examined the phylogeography of the South American subterranean rodent Ctenomys talarum (Talas tuco-tuco) using mitochondrial DNA control region (D-loop) sequences. This species is an herbivorous rodent endemic to the ...

Patagonia is a region that has fascinated researchers for centuries considering the evidence of early human occupation, its geographical and environmental variability, and the diversity of human adaptations. From an arch...

La memoria estadística de la Consejería de Salud pretende ofrecer un compendio de la producción estadística llevada a cabo a partir de la información que actualmente se genera en el Sistema Sanitario Público de And...

Fil: Boixadós, Roxana. Universidad de Buenos Aires; Argentina. Fil: Boixadós, Roxana. Universidad Nacional de Quilmes; Argentina. Fil: Boixadós, Roxana. Consejo Nacional de Investigaciones Científicas y Técnicas; Ar...

El tamaño y la estructura de la población canina de San Martín de los Andes se describió utilizando información proveniente de encuestas obtenidas a través de un muestreo estratificado (9 estratos y 624 lotes) y de...

Durante las décadas de 1980 y 1990, las decisiones de fertilidad variaron de manera significativa y diferenciada a lo largo de la distribución del ingreso en Argentina. En este trabajo se estudian los efectos de estos ...