Person: Domingo Martínez, Laura
Universidad Complutense de Madrid
Faculty / Institute
Geodinámica, Estratigrafía y Paleontología
Now showing 1 - 10 of 36
PublicationAnálisis isotópicos (δ13C y δ18OCO3) en fósiles del Paleoceno basal de la Formación Tremp (Lleida): Implicaciones paleoambientales(Junta de Andalucía, Consejería de Cultura, 2005) Domingo Martínez, Laura; Soler Gijón, Rodrigo; López Martínez, Nieves PublicationNew insights on the taphonomy of the exceptional mammalian fossil sites of Cerro de los Batallones (Late Miocene, Spain) based on rare earth element geochemistry(Society for Sedimentary Geology, 2011-01-01) Domingo, María Soledad; Domingo Martínez, Laura; Sánchez, Israel M.; Alberdi, María Teresa; Azanza, Beatriz; Morales, JorgeCerro de los Batallones fossil sites are distinguished by large and diverse accumulations of Miocene vertebrate fauna. Little taphonomic research has been conducted on these assemblages so far, however. Results of Rare Earth Element (REE) analyses constrain diverse aspects of the taphonomic history undergone by the bones and constitute a starting point for subsequent taphonomic studies. Cerro de los Batallones localities were formed as cavities and seem to be composed of two types of assemblages that differ in their stratigraphic position, internal stratigraphic architecture, taxonomic composition and several taphonomic features. Despite these differences, chemically analyzed bones from the Batallones-1 upper and lower level assemblages exhibit undistinguishable REE patterns both within and between them. This, together with other taphonomic features, indicates that bones are autochthonous and that the depositional context remained constant during the sedimentation of the cavity filling. In addition, REE analyses are a key tool in unveiling the provenance of those fossil bones that could be regarded as allochthonous considering their peculiar macroscopic modifications. Negative Ce anomalies exhibited by isolated fossil bones lead to the proposal that the ponds that existed in the lower level of Batallones-1 were oxic. This inference clarifies the mode of accumulation of individuals in this assemblage: the carcasses did not accumulate massively over a brief period of time but rather they concentrated and, therefore, decayed over a relatively prolonged time span. PublicationThe Great American Biotic Interchange revisited: a new perspective from the stable isotope record of Argentine Pampas fossil mammals(Nature Research, 2020) Domingo Martínez, Laura; Tomassini, Rodrigo L.; Montalvo, Claudia I.; Sanz Pérez, Dánae; Alberdi, María TeresaThis study aims at assessing resource and habitat use, niche occupation and trophic interactions from a stable isotope perspective on fossil mammals from the Argentine Pampas during the Great American Biotic Interchange (GABI). We present stable isotope data of more than 400 samples belonging to 10 mammalian orders and spanning a temporal range from ~9.5 Ma to ~12 ky. Rodents, notoungulates and pilosians record an increase in the consumption of C4 plants, whereas litopterns and cingulates show δ13C values that remain mostly within a C3-dominated diet. Our stable isotope data indicates that the expansion of C4 vegetation opened up new niche opportunities, probably alleviating resource competition among endemic taxa. Gomphothere, equid and camelid δ13C records show a broad variability pointing to consumption of C3 and mixed C3-C4 vegetation. This flexible dietary behavior may have facilitated the successful settlement of immigrant groups in South America. In the case of carnivorous taxa, Late Miocene pre-GABI endemic sparassodonts consumed prey from C3 environments, whereas immigrant carnivorans preferred prey from mixed C3-C4 areas. Our research contributes to the study of the GABI from a different perspective as stable isotope records permit to characterize, from a (semi)quantitative standpoint, ecological traits within extinct fauna. PublicationThe Pampean region (Argentina) underwent larger variation in aridity than in temperature during the late Pleistocene: New evidence from the isotopic analysis of mammalian taxa(Elsevier, 2022-06-15) Sanz Pérez, Dánae; Hernández Fernández, Manuel; Tomassini, Rodrigo L.; Montalvo, Claudia I.; Beilinson, Elisa; Gasparini, Germán M.; Domingo Martínez, LauraDuring the Pleistocene intense climatic changes occurred corresponding with the alternation of interglacial and glacial periods. By means of stable isotope analysis on fossil mammals, this research allows the assessment of the palaeoecological and palaeoclimatic conditions, including the possible scenarios for the atmospheric circulation pattern during three key phases of the late Pleistocene in the Pampean region of Argentina: Last Interglacial (LIG, MIS 5e; unpublished data), Last Glacial Maximum (LGM; 28,170–19,849 cal BP yrs), and post-Last Glacial Maximum (post-LGM, 17,281–11,500 cal BP yrs). Tooth enamel δ13C values of mammals from the Last Glacial Maximum showed an increase in C4 plants consumption compared to the other two phases studied, which may be related to a reduction in forest cover due to a combination of environmental factors such as decreased pCO2atm and increased aridity. We evaluated mean annual precipitation (MAP) and mean annual temperature (MAT) variability from tooth enamel δ13C and δ18O values, which showed a greater variation in precipitation between phases than in temperature. This result enabled us to propose two climate regimes for the studied temporal sequence, an arid-temperate regime, and a humid-temperate regime, which were mostly regulated by variations in atmospheric circulation. PublicationLate Pleistocene ecological, environmental and climatic reconstruction based on megafauna stable isotopes from northwestern Chilean Patagonia.(Elsevier, 2017-06-28) Gonzalez-Guarda, Erwin; Domingo Martínez, Laura; Tornero, Carlos; Pino, Mario; Hernández Fernández, Manuel; Sevilla, Paloma; Villavicencio, Natalia A.; Agustí, JordiStable isotope analyses have been performed on the bioapatite (δ13C; d18O) and collagen (δ13C; δ15N) of four late Pleistocene South American megafaunal taxa (Notiomastodon platensis, Equus andium, cf. Hemiauchenia paradoxa and Xenarthra indet.) to evaluate paleoclimatic and paleoenvironmental conditions as well as paleoecological features of this time period. The analyzed megafauna was found at several locations in the northwestern Chilean Patagonia (38º-42ºS, 74º-71ºW). The bioapatite δ13C values indicated the presence of C3 vegetation ranging from forestal to woodland areas. The collagen d15N values pointed to temperate and humid ecosystems, and to the consumption of shrubs, trees, grasses and sedges. Mean annual temperatures estimated from bioapatite δ18OPO4 values show a similarity to modern temperatures and suggested that the megafauna under study may have lived during warm stages (interstadials) of the late Pleistocene. When comparing our results with those obtained from other South American regions, we find that the diet of this particular Chilean megafauna appears to have been more influenced by resource availability than by the potential dietary range of the taxa. PublicationInferencias paleoclimáticas y paleoambientales en períodos críticos mediante análisis geoquímicos del registro geológico continental(Universidad Complutense de Madrid, Servicio de Publicaciones, 2009-04-21) Domingo Martínez, Laura; López-Martínez, NievesEl propósito de la presente tesis está relacionado con la aplicación de una técnica novedosa, como es la utilización de los isótopos estables de oxígeno y carbono, en el campo de la Paleontología y en la reconstrucción de las condiciones ambientales y climáticas del pasado. PublicationMacroevolution and climate changes: a global multi-family test supports the resource-use hypothesis in terrestrial mammals(Taylor & Francis, 2022-02-28) Hernández Fernández, Manuel; Pelegrin Ramírez, Jonathan S.; Gómez Cano, Ana Rosa; García Yelo, Blanca A.; Moreno Bofarull, Ana; Sánchez Fontela, Noelia; Rodríguez Ruiz, Claudia; Ramiro Camacho, Alejandro; Domingo Martínez, Laura; Menéndez, Iris; Martín Perea, David Manuel; Bazán, Carla M.; Alcalde Rincón, Gema María; Domingo Martínez, María Soledad; Luna, Belén; Peinado Cortés, María del Mar; Arias Royo, Antón; González Couturier, Gabriela; Márquez Villena, Ana; Anaya, Noelia; Blanco, Fernando; Galli, Emilia; Gamboa, Sara; Quesada, Álvaro; Sanz Pérez, Dánae; Varela, Sara; Cantalapiedra, Juan L.Elisabeth S. Vrba’s resource-use hypothesis suggests that speciation in biomes subjected to successive expansion-contraction-fragmentation during periods of climatic change generates high frequency of species restricted to a single biome (stenobiomic species). We compiled biome occupation for all terrestrial mammals and, using Monte Carlo simulations, demonstrated that patterns of biome occupation are congruent with those predicted by the resource-use hypothesis. Biome specialists are much more speciose than expected by chance, while there are fewer moderate biome generalists than expected. Despite their scarcity, extreme eurybiomic lineages show significant overrepresentation, which suggests they are seldom affected by climate-related extinction processes. Additionally, stenobiomic species are concentrated in biomes placed at the extremes of the climatic gradient, such as equatorial rainforest, subtropical desert, steppe, and tundra. Although this pattern is fairly maintained across different mammalian families, highlighting its universality, our analysis also found great variability. Exceptions to the predictions of the resource-use hypothesis seem to be associated to biome climatic or geographical heterogeneity, which favours vicariance in some biomes not placed in extremes of the climatic gradient (tropical deciduous woodland, sclerophyllous woodland-shrubland), as well as life-history differences across taxa, which generates a stronger trend to specialisation in small body size lineages than in larger mammals. PublicationMultiproxy evidence for leaf-browsing and closed habitats in extinct proboscideans (Mammalia, Proboscidea) from Central Chile(National Academy of Sciences, 2018-09-11) González-Guarda, Erwin; Petermann-Pichincura, Alia; Tornero, Carlos; Domingo Martínez, Laura; Agustí, Jordi; Pino, Mario; Abarzúa, Ana M.; Capriles, José M.; Villavicencio, Natalia A.; Labarca, Rafael; Tolorza, Violeta; Sevilla, Paloma; Rivals, FlorentProboscideans are so-called ecosystem engineers and are considered key players in hypotheses about Late Pleistocene megafaunal extinctions. However, knowledge about the autoecology and chronology of the proboscideans in South America is still open to debate and raises controversial views. Here, we used a range of multiproxy approaches and new radiocarbon datings to study the autoecology of Chilean gomphotheres, the only group of proboscideans to reach South America during the Great American Biotic Interchange (∼3.1 to 2.7 million years before present). As part of this study, we analyzed stable isotopes, dental microwear, and dental calculus microfossils on gomphothere molars from 30 Late Pleistocene sites (31° to 42°S). These proxies provided different scales of temporal resolution, which were then combined to assess the dietary and habitat patterns of these proboscideans. The multiproxy study suggests that most foraging took place in relatively closed environments. In Central Chile, there is a positive correlation between lower δ13C values and an increasing consumption of arboreal/scrub elements. Analyses of dental microwear and calculus microfossils have verified these leaf-browsing feeding habits. From a comparative perspective, the dietary pattern of South American gomphotheres appears to be constrained more by resource availability than by the potential dietary range of the individual taxa. This multiproxy study is aimed at increasing knowledge of the life history of gomphotheres and thus follows an issue considered one of the greatest challenges for paleontology in South America, recently pointed out by the need to thoroughly understand the role of ecological engineers before making predictions about the consequences of ecosystem defaunation. PublicationAn Investigation of the Earliest Danian Paleoclimate Using stable isotope analysis of a non-marine fossil assemblage at the Fontllonga-3 site (South Central Pyrenees, Spain)(Ministerio de Educación y Ciencia, 2006) Domingo Martínez, Laura; López Martínez, Nieves; Soler Gijón, Rodrigo PublicationPalaeoecological differences underlie rare co-occurrence of Miocene European primates(BMC, 2021) DeMiguel, Daniel; Domingo Martínez, Laura; Sánchez, Israel M.; Casanovas Vilar, Isaac; Robles, Josep M.; Alba, David M.Background The two main primate groups recorded throughout the European Miocene, hominoids and pliopithecoids, seldom co-occur. Due to both their rarity and insufficiently understood palaeoecology, it is currently unclear whether the infrequent co-occurrence of these groups is due to sampling bias or reflects different ecological preferences. Here we rely on the densely sampled primate-bearing sequence of Abocador de Can Mata (ACM) in Spain to test whether turnovers in primate assemblages are correlated with palaeoenvironmental changes. We reconstruct dietary evolution through time (ca. 12.6–11.4 Ma), and hence climate and habitat, using tooth-wear patterns and carbon and oxygen isotope compositions of enamel of the ubiquitous musk-deer Micromeryx. Results Our results reveal that primate species composition is strongly correlated with distinct environmental phases. Large-bodied hominoids (dryopithecines) are recorded in humid, densely-forested environments on the lowermost portion of the ACM sequence. In contrast, pliopithecoids inhabited less humid, patchy ecosystems, being replaced by dryopithecines and the small-bodied Pliobates toward the top of the series in gallery forests embedded in mosaic environments. Conclusions These results support the view that pliopithecoid primates preferred less humid habitats than hominoids, and reveal that differences in behavioural ecology were the main factor underpinning their rare co-occurrence during the European Miocene. Our findings further support that ACM hominoids, like Miocene apes as a whole, inhabited more seasonal environments than extant apes. Finally, this study highlights the importance of high-resolution, local investigations to complement larger-scale analyses and illustrates that continuous and densely sampled fossiliferous sequences are essential for deciphering the complex interplay between biotic and abiotic factors that shaped past diversity.