Este artículo trata sobre las prácticas de contratación y los mecanismos favoritismo retribución entablados por capataces obreros en faenas portuarias chilenas durante primeras décadas del siglo XX. Basada documentación correspondiente al norte salitrero la bahía Concepción, conclusión sostiene que dicho se basó un mecanismo constituido principalmente el consumo alcohol hacían bares asociados c...

This work establishes the relationship between bioclimatology and agronomy. Bioclimatic indices are obtained for several areas under olive cultivation correlated with yields. Due to effect of climate change on high economic losses it produces, we propose a sustainable development model territorial classification crops based bioclimatic knowledge. diagrams prepared provide information water stre...

Biocrusts are an essential soil surface cover at drylands where ecosystems especially fragile to degradation processes due climatic peculiarities. In the present work, (micro)biological and physicochemical properties indicative of functionality were studied in two different biocrust types dominated by Dipolschistes diacapsis Lepraria isidiata underlying depths (SL1, layer right below biocrusts,...