Methane, a greenhouse gas, is produced from the activity of methanogenic archaea under anaerobic conditions. Methanogenic activity is dominant in freshwater sediments; however, in estuarine sediments and brackish wetlands, the production and emission of methane has also been determined. Studies on methane emissions in tropical brackish environments have been carried...
Spatially, only dissolved oxygen showed significant differences between two kinds of environments, being greater in the submerged vegetation habitat. Similarly, on diel scale the environmental variables tended to show no significant differences among hours. By contrast, seasonally all environmental variables showed significant differences among months, in both type of habitats....
El objetivo de esta investigación fue determinar el efecto de Cr y Cd en ostión Crassostrea virginica (Gmelin) procedente de poblaciones nativas de la Laguna de Mandinga, Veracruz, México. Se realizaron bioensayos agudos y subletales, semiestáticos, con organismos sometidos a un período de mantenimiento previo, en un sistema de circulación...
Abundance, size structure, reproduction and feeding patterns of Anchoa mitchilli were analyzed in the Pueblo Viejo lagoon, Veracruz, through 12 two-monthly 24-h cycles, in two habitats (with and without submerged vegetation). Abundance did not show differences between habitats, but seasonal significant peaks of abundance occurred during January and March. Moreover,...
Vibrio vulnificus is a halophylic bacterium widely distributed in coastal waters of seas, estuaries and other water bodies. Oysters, fish, sediments, water and plancton are reservoirs for V. Vulnificus, and it is thus important to assess the effect of salinity, temperature and seasonal changes on the viability of V. Vulnificus,...
