Biogeography is a discipline included in comparative biology that studies the distribution of organisms, the distributional patterns of organisms are analyzed through the application of different methods, depending on the question formulated. In this work the principles and advantages of…

For the first time for Mexican mycobiota the genus Cerinomyces Mar. is reported with the species C lagerheimii (Pat.) McNabb. This species only have been found in Ecuador (type locality), Brasil, United States and Venezuela. A review of different specimens…

The region of Huatusco, in Veracruz, Mexico, is an area of high coffee production. Coffee trees are sensitive to temperature and precipitation variations. Those climatic elements are related to the altitude, aspect and slope it? the agroecological shadow system. A…

La evolución de las características ecológicas de las especies es uno de los temas más intensamente estudiados, pero su complejidad suele limitar estos estudios a evidencias indirectas de las adaptaciones reales de los organismos. Recientemente, métodos moleculares como los "micro-arrays"…

This work is part of the results of the research of the Laboratory of Invertebrates of the Facultad de Ciencias UNAM, partially financed by the Comision Nacional para el Conocimiento y Uso de la Biodiversidad (CONABIO) developing during 2006-2007. The…

Santiago Yeche commercial agriculture is based on the cultivation of tomatoes and gladiolus which is also based on irrigation. The irrigation system is formed by channels and it was built during Colonial times. Santiago Yeche’s peasant families introduced gladiolus cultivation…

Santiago Yeche commercial agriculture is based on the cultivation of tomatoes and gladiolus which is also based on irrigation. The irrigation system is formed by channels and it was built during Colonial times. Santiago Yeche’s peasant families introduced gladiolus cultivation…

The cochineal cultivation had a great economic importance andits study has been basic for the knowledge of the Colonial Society. In this article historical documents are transcribed and commented; their value derives from the historical data themselves, as well as…

The cochineal cultivation had a great economic importance andits study has been basic for the knowledge of the Colonial Society. In this article historical documents are transcribed and commented; their value derives from the historical data themselves, as well as…

Santiago Yeche commercial agriculture is based on the cultivation of tomatoes and gladiolus which is also based on irrigation. The irrigation system is formed by channels and it was built during Colonial times. Santiago Yeche’s peasant families introduced gladiolus cultivation…