The La Mancha coastal lagoon is a mixohaline-eutrophic system according to its annual average of salinity and chlorophyll concentration, with a strong influence of the opening-closing dynamics of the bar, which affects its hydrological, biological and ecological cycles. We identified 57 zooplankton taxa, 45 at the species level and 19...
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,...
The genera Picea (Pinaceae) and Juniperus (Cupressaceae) are part of the main coniferous forests in Mexico. For the first, three endemic species are reported, which are located only in the north of the country. For the second genus, 20 species are reported, widely distributed in Mexico, nine of them endemic...
El cambio climático puede generar efectos negativos sobre la distribución geográfica de los anfibios, los cuales son un grupo muy susceptible a variaciones detemperatura y humedad además de ser estenoicasy con poca vagilidad. México ocupa el quinto lugar de riqueza de anfibios, siendo más de la mitad de las especies...
We determined the presence, distribution patterns and the frequency of occurrence of glycosidic residues in the membrane of the sperm of the wild population of Chirostoma humboltidanum, from Villa Victoria Dam, State of Mexico. Semen samples were obtained from sexually mature adults without the use of anesthetics. The characterization of...
Currently, climate change has been pointed out as one of the most important threats to wild and cultivated plant species. Due to the close relationship between climate and species, it has been changes in the distribution, phenology and in the biotic interactions in both terrestrial and marine plant species. Since...
In environmental monitoring, the qualitative evaluation of histological alterations has been proposed as a biomarker to evaluate the effects of contamination in aquatic organisms. However, quantitative analysis tools that allow the determination of the health of wild or experimental organisms are not considered. The aim was to calculate the health...
Coastal lagoons are systems with high levels of productivity and a big biological diversity as a result of a high ecological complexity, due to the different environmental processes that result from seasonal, diel and tides cycles periods and to the abrupt changes of the environmental variables of these periods. The...
The main objective of this research was to reconstruct the paleoflora of Lacustrine Villa Alegr ia (named by Dávalos -Álvarez, 2006) and the Cerro Prieto travertine through paleopal ynologi cal analysis, in addition to establish ing palynofloristic affinities with other Neogene and Paleogene formations found in Mexico. The study area...