Land-sea interface is an ecotone where the intersection of marine and terrestrial ecosystems crea... more Land-sea interface is an ecotone where the intersection of marine and terrestrial ecosystems create unique ecological conditions for terrestrial mobile species and freshwater-adapted organisms to exploit marine-derived food resources. Mammalian carnivores play an important role in almost any ecosystem where they live due to their top-down (or trophic cascade) effects on prey species and primary producers, thus structuring ecosystems along varied food-web pathways. We use camera trapping to study the patterns of coexistence, habitat use and activity pattern of carnivores species in a coastal area in southern Buenos Aires province, Argentina. We were able to detect five of the seven species of Mammalian carnivores being the Pampas fox Lycalopex gymnocercus and Geoffroy’s cat Leopardus geoffroyi the two most common. Geoffroy’s cat seems to use more intensively those areas close to the shoreline, while we found little support of it for Pampas fox; which seems to use more inland areas. C...
The analysis of feces is a fundamental tool for field work, especially to identify the presence o... more The analysis of feces is a fundamental tool for field work, especially to identify the presence of certain species in an area. Fecal bile acids and their relative concentration follow patterns that are species-specific, and can be characterized by Thin Layer Chromatography (TLC) and High Performance Liquid Chromatography (HPLC). These techniques have been used for differentiating feces of several mammal species; however, it has never been used for Xenarthra species. In this thesis we identified, by those techniques, the fecal bile acid profile of 11 Xenarthra species, by the analysis of 107 feces from different individuals: Zaedyus pichiy (n=10), Chaetophractus vellerosus (n=5), Chaetophractus villosus (n=57), Dasypus hybridus (n=4), Priodontes maximus (n=2), Tamandua tetradactyla (n=14), Myrmecophaga tridactyla (n=4), Tolypeutes matacus (n=8), Euphractus sexcinctus (n=1), Choloepus didactylus (n=1) and C. hoffmanni (n=1). There were differences between the bile acid patterns of all...
Ciencias Naturales es una materia anual que se dicta durante el primer ano de las carreras de Pro... more Ciencias Naturales es una materia anual que se dicta durante el primer ano de las carreras de Profesorado de Educacion Primaria y Profesorado de Educacion Inicial de la UNS. Debido a las medidas de aislamiento por motivo de la pandemia por COVID-19, se modifico el cursado durante el primer cuatrimestre de este ano. El programa de la materia fue reformulado sobre la base de las ideas clave de cada unidad tematica, que se fueron trabajando de forma integrada y progresiva segun su complejidad. Respecto de las estrategias utilizadas, se incorporaron las clases sincronicas on line a traves de la plataforma Meet en las cuales se plantearon diversas situaciones problema que se debatieron en forma oral y a traves de las producciones escritas, desarrolladas y presentadas grupalmente en la plataforma Moodle (Maggio, 2012). Se realizaron actividades de autoevaluacion y retroalimentacion entre las docentes y el grupo, asi como entre pares, que enriquecieron la discusion y la resolucion de cada ...
Land-sea interface is an ecotone where the intersection of marine and terrestrial ecosystems crea... more Land-sea interface is an ecotone where the intersection of marine and terrestrial ecosystems create unique ecological conditions for terrestrial mobile species and freshwater-adapted organisms to exploit marine-derived food resources. Mammalian carnivores play an important role in almost any ecosystem where they live due to their top-down (or trophic cascade) effects on prey species and primary producers, thus structuring ecosystems along varied food-web pathways. We use camera trapping to study the patterns of coexistence, habitat use and activity pattern of carnivores species in a coastal area in southern Buenos Aires province, Argentina. We were able to detect five of the seven species of Mammalian carnivores being the Pampas fox Lycalopex gymnocercus and Geoffroy’s cat Leopardus geoffroyi the two most common. Geoffroy’s cat seems to use more intensively those areas close to the shoreline, while we found little support of it for Pampas fox; which seems to use more inland areas. C...
The analysis of feces is a fundamental tool for field work, especially to identify the presence o... more The analysis of feces is a fundamental tool for field work, especially to identify the presence of certain species in an area. Fecal bile acids and their relative concentration follow patterns that are species-specific, and can be characterized by Thin Layer Chromatography (TLC) and High Performance Liquid Chromatography (HPLC). These techniques have been used for differentiating feces of several mammal species; however, it has never been used for Xenarthra species. In this thesis we identified, by those techniques, the fecal bile acid profile of 11 Xenarthra species, by the analysis of 107 feces from different individuals: Zaedyus pichiy (n=10), Chaetophractus vellerosus (n=5), Chaetophractus villosus (n=57), Dasypus hybridus (n=4), Priodontes maximus (n=2), Tamandua tetradactyla (n=14), Myrmecophaga tridactyla (n=4), Tolypeutes matacus (n=8), Euphractus sexcinctus (n=1), Choloepus didactylus (n=1) and C. hoffmanni (n=1). There were differences between the bile acid patterns of all...
Ciencias Naturales es una materia anual que se dicta durante el primer ano de las carreras de Pro... more Ciencias Naturales es una materia anual que se dicta durante el primer ano de las carreras de Profesorado de Educacion Primaria y Profesorado de Educacion Inicial de la UNS. Debido a las medidas de aislamiento por motivo de la pandemia por COVID-19, se modifico el cursado durante el primer cuatrimestre de este ano. El programa de la materia fue reformulado sobre la base de las ideas clave de cada unidad tematica, que se fueron trabajando de forma integrada y progresiva segun su complejidad. Respecto de las estrategias utilizadas, se incorporaron las clases sincronicas on line a traves de la plataforma Meet en las cuales se plantearon diversas situaciones problema que se debatieron en forma oral y a traves de las producciones escritas, desarrolladas y presentadas grupalmente en la plataforma Moodle (Maggio, 2012). Se realizaron actividades de autoevaluacion y retroalimentacion entre las docentes y el grupo, asi como entre pares, que enriquecieron la discusion y la resolucion de cada ...
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