Malacofauna from soft bottoms in the Cerro Gordo marine cave (Alboran Sea): biodiversity and spatial distribution

A study has been carried out for the first time of the molluscan fauna of the Cerro Gordo submarine cave in the Spanish part of the Alboran Sea. The depth of the cave bottom ranges from 16 m at its entrance, to sea level at its innermost section. Replicate soft-bottom samples were collected from three different stations along the horizontal gradient of the cave. Additional samples were collected on photophilous hard bottoms next to the cave entrance in order to assess the origin of cave bioclasts. The cave sediments contained 158 species of molluscs (23 collected alive and 155 recorded as shells), more than in Mediterranean cave sediments elsewhere. Species richness and abundance of molluscs decreased from the outermost to the innermost part of the cave. No cave-exclusive species were found, possibly due to the scarcity of caves in the Alboran Sea, but many of the recorded species are known from other Mediterranean caves. The lack of adult individuals for most of the living species inside the cave, suggests that these do not constitute self-maintaining populations. Finally, our results suggest that bioclasts found in the sediment do not derive from the outside of the cave nor from the sediment itself, but mostly from the communities inhabiting the walls and ceiling of the cave

La Escuela Intercultural Bilingüe

Una escuela intercultural bilingüe es aquella que brinda un servicio educativo de calidad a niños, niñas y adolescentes de inicial, primaria y secundaria que pertenecen a un pueblo indígena u originario, y que hablan una lengua originaria como primera o como segunda lengua. En esta escuela, las y los estudiantes logran óptimos niveles de aprendizaje al desarrollar un currículo intercultural que considera los conocimientos de las culturas locales articulados a los de otras culturas, cuentan con materiales educativos pertinentes en la lengua originaria y en castellano y tienen docentes formados en EIB que manejan la lengua de los estudiantes y el castellano, los mismos que desarrollan los procesos pedagógicos en las dos lenguas desde un enfoque intercultural. La escuela intercultural bilingüe es una institución educativa inserta en la comunidad, que responde a sus intereses y necesidades y que tiene una estructura y funcionamiento acordes con la cultura de los estudiantes

La Escuela Intercultural Bilingüe

Una escuela intercultural bilingüe es aquella que brinda un servicio educativo de calidad a niños, niñas y adolescentes de inicial, primaria y secundaria que pertenecen a un pueblo indígena u originario, y que hablan una lengua originaria como primera o como segunda lengua. En esta escuela, las y los estudiantes logran óptimos niveles de aprendizaje al desarrollar un currículo intercultural que considera los conocimientos de las culturas locales articulados a los de otras culturas, cuentan con materiales educativos pertinentes en la lengua originaria y en castellano y tienen docentes formados en EIB que manejan la lengua de los estudiantes y el castellano, los mismos que desarrollan los procesos pedagógicos en las dos lenguas desde un enfoque intercultural. La escuela intercultural bilingüe es una institución educativa inserta en la comunidad, que responde a sus intereses y necesidades y que tiene una estructura y funcionamiento acordes con la cultura de los estudiantes

Search for dark matter produced in association with bottom or top quarks in √s = 13 TeV pp collisions with the ATLAS detector

A search for weakly interacting massive particle dark matter produced in association with bottom or top quarks is presented. Final states containing third-generation quarks and miss- ing transverse momentum are considered. The analysis uses 36.1 fb−1 of proton–proton collision data recorded by the ATLAS experiment at √s = 13 TeV in 2015 and 2016. No significant excess of events above the estimated backgrounds is observed. The results are in- terpreted in the framework of simplified models of spin-0 dark-matter mediators. For colour- neutral spin-0 mediators produced in association with top quarks and decaying into a pair of dark-matter particles, mediator masses below 50 GeV are excluded assuming a dark-matter candidate mass of 1 GeV and unitary couplings. For scalar and pseudoscalar mediators produced in association with bottom quarks, the search sets limits on the production cross- section of 300 times the predicted rate for mediators with masses between 10 and 50 GeV and assuming a dark-matter mass of 1 GeV and unitary coupling. Constraints on colour- charged scalar simplified models are also presented. Assuming a dark-matter particle mass of 35 GeV, mediator particles with mass below 1.1 TeV are excluded for couplings yielding a dark-matter relic density consistent with measurements