The Metztitlán river basin, in Hidalgo, Mexico, was characterized on the basis of its aquatic insect fauna and limnological parameters. Sampling was done quarterly along a year cycle and 75 Km of river length. Principal Component Analysis ordered sampling sites and separated corresponding stations into high, median, and low zones....
In the present study a determination of polycyclic aromatic hydrocarbons (PAH’s) in sediments and molluscs (Crassostrea virginica, C. rhizophorae and Brachidontes exustus) was made from La Grande-La Chica lagoon system, Veracruz State, Mexico by gas chromatography with capillary column and its correlation with organic carbon content (OC) and texture of...