Methane emission factors from different cattle manure management systems including simulated slurry system fermentation were experimentally determined in this and a previous study (González-Avalos and Ruiz-Suárez, 2001). Combining results from both studies, we report values for maximum CH4 yield, called…

Precipitation zone systems exist for México based on seasonality, quantity of precipitation, climates and geographical divisions, but none are convenient for the study of the relation of precipitation with phenomena such as El Niño. An empirical set of seven exclusively…

Satellite-based quantitative precipitation estimates (QPE) offer the potential for global, near real-time monitoring of precipitation. Provided their accuracy, in terms of frequency and intensity structures, can be verified, such products would prove to be highly valuable for constraining uncertainty in…

In order to analyze the impacts of climate change on species endowed with forestry relevance, the present study practiced simulations in the potential distribution of 16 forest species inside the Mexican Republic's temperate, tropical, and semiarid zones. For the examination…

From 3D inverse modeling and available geologic data, three aeromagnetic data sets observed at Panga de Abajo, NE Baja California, México, suggest geomagnetic events of normal and reverse polarity in volcanic intrusive bodies of mafic composition intruding the sedimentary column…

Applying principal component analysis (PCA), we determined climate zones in a topographic gradient in the central-northeastern part of México. We employed nearly 3 0 years of monthly temperature and precipitation data at 173 meteorological stations. The climate classification was carried…

Deiregyne tenorioi Soto Arenas & Salazar, a new orchid species from the Mexican states of Hidalgo, Estado de México, Oaxaca, Puebla, and Tlaxcala, is described and illustrated. It is similar to D. eriophora (B.L. Rob. & Greenm.) Garay and D.…

A new species, Digitaria michoacanensis from northern Michoacán and the adjacent part of the state of México in the central-west region of México, is described. Pending an updated phylogenetic infrageneric classification of the genus; the new species is placed in…

Coronary anomalies are rare, with a reported prevalence of 1.3% among patients who undergo coronary angiography. The great majority of coronary artery anomalies are incidental findings and are not clinically significant, but in some cases, may be responsible for angina,…

The southeastern Pacific chimaeroid Hydrolagus macrophthalmus De Buen, 1959, is reported for the first time in the northeastern Pacific on the basis of 1 male specimen (945 mm TL) caught on 13 April 1995 off Manzanillo, Colima (Mexico: 18° 30'N,…