La formación de recursos humanos para la oceanografía y las ciencias del mar

Because of their physical, chemical, geological and biological characteristics sea integrates a very complex and interesting ecosystem. For this reason research should also be interdisciplinary as well as multidisciplinary in order to link marine sciences and oceanography with society. In Mexico, the existing qualified staff does not satisfy the demand, both in quantity and in quality, to fulfill the positions necessary for the exploitation of renewable and non renewable natural resources. In this work it is proposed a revision of programs at schools, so that the education of scientific, technical and human resources specialized in marine sciences may satisfy present and future needs in the field of marine research and the inherent technological development

Panorama general de la paleontología mexicana

A total of 1,720 references to research papers on Mexican fossils, covering all states of the Mexican Republic, was compiled through the revision of both Mexican and foreign publications. Of such a total, 10 references correspond to the Precambrian, 150 to the Paleozoic, 687 to the Mesozoic, and 688 to the Cenozoic, while 101 encompass more than one era and 84 do not specify the age covered. Regarding distribution by taxonomic group, 686 articles are on invertebrates, 409 on vertebrates, 331 on microfossils, and 175 on plants, while the rest (119) is made up by papers a) on more than one taxonomic group, b) on organisms which do not fall into one of the four aforementioned groups, or c) not specifying which taxonomic group they refer to.A través de una recopilación de 1,720 citas en publicaciones nacionales y extranjeras, se hace un análisis sobre el estudio de los fósiles en México realizado por científicos mexicanos

Panorama general de la paleontología mexicana

A través de una recopilación de 1,720 citas en publicaciones nacionales y extranjeras, se hace un análisis sobre el estudio de los fósiles en México realizado por científicos mexicanos

Panorama general de la paleontología mexicana

A total of 1,720 references to research papers on Mexican fossils, covering all states of the Mexican Republic, was compiled through the revision of both Mexican and foreign publications. Of such a total, 10 references correspond to the Precambrian, 150 to the Paleozoic, 687 to the Mesozoic, and 688 to the Cenozoic, while 101 encompass more than one era and 84 do not specify the age covered. Regarding distribution by taxonomic group, 686 articles are on invertebrates, 409 on vertebrates, 331 on microfossils, and 175 on plants, while the rest (119) is made up by papers a) on more than one taxonomic group, b) on organisms which do not fall into one of the four aforementioned groups, or c) not specifying which taxonomic group they refer to.A través de una recopilación de 1,720 citas en publicaciones nacionales y extranjeras, se hace un análisis sobre el estudio de los fósiles en México realizado por científicos mexicanos

Bioerosion and encrustation rates in recent mollusk death assemblages on a supratidal siliciclastic setting, Playa Norte, Veracruz State, Mexico

This study presents both qualitative and quantitative data regarding marine mollusk (gastropods and bivalves) shell bioerosion and encrustation based on death assemblages obtained from a recent supratidal environment in Playa Norte, Veracruz State. The objectives of this study were to assess the nature of bioerosion and encrustation processes and to investigate the role of these taphonomic features contributing to the deterioration of natural shell accumulations within a tropical siliciclastic tidal environment. The assemblage comprises 31 species: 13 gastropods and 18 bivalves. The bioerosion and encrustation degrees were low to moderate for both types. The most abundant traces were predatory gastropod structures (Oichnus paraboloides and O. simplex), whereas sponge borings (Entobia isp.), polychaete dwellings (Caulostrepsis taeniola), and echinoid raspings (Gnatichnus isp.) were less frequent. The encrusting organisms include polychaete serpulids, bryozoans, and rare foraminifers (Homotrema rubrum). Because of the low bioerosion and encrustation degrees occurring in this area, accumulation is expected to predominate over biotic destruction. As deposition conditions (richly fossiliferous carbonate sandstone beds) were similar to those prevailing in the Tuxpan Formation during the Miocene (Langhian), it is suggested that this study provides an equivalent reference to interpret mollusk fossil assemblages located in this site.Fil: Gómez Espinosa, Ma. Catalina. Universidad Autónoma de Guerrero; MéxicoFil: Raúl Gío Argáez, F.. Universidad Nacional Autónoma de México; MéxicoFil: Farinati, Ester Amanda. Universidad Nacional del Sur. Departamento de Geología; ArgentinaFil: Aliotta, Salvador. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Argentino de Oceanografía. Universidad Nacional del Sur. Instituto Argentino de Oceanografía; ArgentinaFil: Salgado-Souto, Sergio Adrian. Universidad Autónoma de Guerrero; Méxic