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Distribution patterns are defined for the caridean shrimps of two estuarine systems of the southwestern Gulf of Mexico, Laguna de Términos and Laguna Madre. The patterns include a "wide" (W) and a "restricted" (R) distribution with respect to the presence of each species along a salinity range, as well as an "associated with the habitat" (AH) and a "not associated with the habitat" (NAH) component defined with respect to the presence of a species in one or more types of habitat. Specimens collected were 12,176 of 11 species in Términos and 1,617 of nine species in Madre. Hippolyte zostericola was the dominant species with 85% and 54% of the total density in Términos and Madre, respectively. Over 80% of the density of carideans in each lagoon and 55% and 72% of the species richness in Términos and Madre, respectively, were found in habitats with submerged aquatic vegetation. Laguna de Términos has five RAH species associated with submerged aquatic vegetation (SAV) in euhaline environments, two WAH species associated with SAV, and three WNAH species with no habitat preference. Laguna Madre has two RAH species associated with SAV in euhaline habitats, one WAH species in SAV in all localities, and three WNAH species in all types of habitats. These caridean patterns agree with those registered for the brachyuran crabs of Laguna de Términos. Two faunistic groups and two guilds were determined for each lagoon. It is concluded that both crabs and shrimps may be used as indicator species for particular environmental characteristics and types of habitat. RESUMENSe definen patrones de distribución para los camarones carideos de dos sistemas estuarinos en el suroeste del Golfo de México, Laguna de Términos y Laguna Madre. Los patrones incluyen una distribución "amplia" (W) y una "restringida" (R) con respecto a la presencia de cada especie a lo 4 ) e-mail: ebarba@vhs.ecosur.mx © Koninklijke Brill NV, Leiden, 2005 Crustaceana 78 (6): 709-726 Also available online: www.brill.nl 710 E. BARBA, A. RAZ-GUZMAN & A. J. SÁNCHEZ largo del gradiente de salinidad, así como un componente "asociado al habitat" (AH) y uno "no asociado al habitat" (NAH) definidos con respecto a la presencia de una especie en uno o mas tipos de habitat. Se colectaron 12,176 especimenes de 11 especies en Términos y 1,617 especimenes de nueve especies en Madre. Hippolyte zostericola fue la especie dominante con 85% y 54% de la densidad total en Términos y Madre respectivamente. Mas del 80% de la densidad de los carideos de cada laguna y 55% y 72% de la riqueza específica en Términos y Madre respectivamente se registraron en habitats con vegetación acuática sumergida. Laguna de Términos tiene cinco especies RAH asociadas a vegetación acuática sumergida (SAV) en ambientes euhalinos, dos especies WAH asociadas a SAV y tres especies WNAH sin preferencia por un tipo de habitat. Laguna Madre tiene dos especies RAH asociadas a SAV en habitats euhalinos, una especie WAH en SAV en todas las localidades y tres especies WNAH en todos los tipos de habitats. Los patrones...

In this paper, Raman spectroscopy is used for the first time to identify the pigments on decorated antique Iberian pottery. Ceramic fragments of type Real and others from the archaeological excavation in the oppidum Puente Tablas were examined. Different types of iron oxide pigments (hematite and goethite) were identified, along with amorphous carbon. In some samples, the presence of chalk or gypsum could be demonstrated. Some unattributed Raman bands are believed to be associated either with post-burial organic deposition or with silicate materials that are present in red ochre. It was possible to relate the findings with geological data from the region and to make assumptions on a local production.

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The knowledge and dissemination of the Iberian culture (6th to 1st century BC) have made great progress within the last three decades, so much so that it is now one of the main fields in the study of the Protohistory of the Iberian Peninsula. Even so, certain topics remain which need further research in Iberian Archaeology, such as the processes of manufacturing and decoration of various kinds of materials, and the choice of raw materials, including pigments. This piece of research presents micro-Raman spectroscopy analysis of a set of materials dated between the sixth and the third century BC. The typology of these materials includes ceramics and coverings with and without decoration. All of them are located in various archaeological sites of the Spanish provinces of Jaén, Granada, Málaga and Ciudad Real. The use of micro-Raman spectroscopy together with energy dispersive X-ray fluorescence and X-ray diffraction helped identify gypsum as the main raw material used for the inside coverings of houses and tombs, as well as for storage structures. Less frequent raw materials are calcite, dolomite and quartz. As to decoration in ceramics, the origin and elaboration of black decoration are here identified for the first time in the history of Iberian culture. Black decoration can be classified as two periods: the older period used manganese oxide and the later period used magnetite. Cinnabar has also been identified in the red decoration of ceramics retrieved as grave goods.

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