Carbon stocks and micromorphology of organic matter in riparian soils of three high mountain ecosystems: Iztaccihuatl volcano Údair: Sandoval Aparicio, Juan Carlos, Gutierrez Castorena, Ma. del Carmen, Cruz Flores, Gerardo, Ortiz Solorio, Carlos Alberto

Los manglares de Tabasco, una reserva natural de carbono Údair: Moreno Cáliz, Elvia, Guerrero Peña, Armando, Gutiérrez Castorena, Ma. del Carmen, Ortiz Solorio, Carlos Alberto, Palma López, David Jesús

Mineralogy in the estimation of the temperature of forest fire and their immediate effects in Andosols, State of Mexico Údair: Hernández Vallecillo, Gabriel Alejandro, Gutiérrez Castorena, Ma. del Carmen, Barragán Maravilla, Sandra Monserrat, Ángeles Cervantes, Efraín Reyes, Gutiérrez Castorena, Edgar Vladimir, Ortiz Solorio, Carlos Alberto