Resultados de investigación

This dataset includes the information from thirty-six samples collected in August 2014 from 12 stations along a transect crossing the Gulf of Lions, from the coast off Gruissan to the eastern side of the Gulf of Fos (French coast, NW Mediterranean). It includes the density and biomass of all microbenthic organisms collected (identified to the lowest taxonomic level). It also includes the information on the main variables describing the environmental characteristics of the samples stations: Latitude, Longitude, Distance, Depth, Escherichia coli, Enterococci, Silt, Clay, Very fine sands, Fines sands, Medium sands, Pore water, Organic Matter, Organic Carbon, Hydrocarbons C10-C40, Nitrogen, Phosphorous, Aluminium total, Arsenium total, Cadmium total, Chrome total, Copper total, Iron total, Mercury total, Nickel total, Lead total, Zinc total, HAPs, total PCBs, Acénaphtylène, Fluoranthène , Benzo (b) fluoranthène , Benzo (k) fluoranthène, Benzo (a) pyrène , Benzo (ghi) pérylène, Indéno (1,2,3 cd) pyrène, Anthracène, Acénaphtène, Chrysène, Dibenzo (a,h) anthracène, Fluorène, Naphtalène, Pyrène, Phénanthrène, Benzo (a) anthracène, PCB 28, PCB 52, PCB 101, PCB 118, PCB 138, PCB 153, PCB 180, PCB totaux calculés, Monobutylétain, Dibutylétain, Tributylétain, Triphénylétain., This dataset includes the information from thirty-six samples collected in August 2014 from 12 stations along a transect crossing the Gulf of Lions, from the coast off Gruissan to the eastern side of the Gulf of Fos (French coast, NW Mediterranean), and refers to the density and biomass per square metre of the macrobenthos, as well as to all common descriptors of the sediments, including organic and inorganic contaminants, and the most relevant sea surface satellite vaiables., Peer reviewed

This study has been funded by Spanish Ministry of Science and Innovation grants CGL2010-18602, CGL2015-66192-R and Andalusian grant P12-RNM-1521-EEZA to J.M.L., the European Regional Development Fund, Agencia Nacional de la Promoción de Ciencia y Tecnología (PICT 2016-1780), Argentina to A.T.A. and FPI fellowship (BES-2011-043505) to N.M.R, Dos tablas de datos: Animal abundance y Decomposition data, Peer reviewed

Data from: An experimental extreme drought reduces the likelihood of species to coexist despite increasing intransitivity in competitive networks.- Matías L, Godoy O, Gómez‐Aparicio L, Pérez-Ramos I (2018) An experimental extreme drought reduces the likelihood of species to coexist despite increasing intransitivity in competitive networks. Journal of Ecology 106(3): 826-837. https://doi.org/10.1111/1365-2745.12962 .- Data available from the Dryad Digital Repository: https://doi.org/10.5061/dryad.5d1s9 (Matías, Godoy, Gómez-Aparicio, & Pérez-Ramos, 2018, Very little is known about how variation in environmental conditions alters the strength and the structure of competitive networks and what are the consequences of this for species coexistence. We performed a competition experiment with 10 annual plant species to parameterise a population model describing species’ dynamics according to their vital rates and pairwise competitive coefficients. Seeds from all species were sown under two different climatic scenarios: (1) right before the first major storm of the growing season and (2) after an imposed fall drought of 2 months simulating an extreme climatic event of intense aridity. Species’ demography and competitive responses were used to estimate pairwise stabilising niche differences and average fitness differences. In addition, we used tools from network theory to characterise the structure of multispecies competition from the determinants of species coexistence. Specifically, we evaluated changes in competitive dominance between species pairs, and the prevalence of intransitive competitive relationships for 120 triplets between these two climatic events. The experimental extreme event significantly reduced fitness differences between species pairs. Such an equalising mechanism promotes coexistence. However, niche differences were also reduced in such a way that the number of species pairs whose niche differences overcame their fitness differences was reduced from six to two. Contrary to our expectations, the extreme event did not increase the hierarchy of competitive dominance. Instead, and depending on the technique used, the prevalence of intransitivity remained marginally similar (17% to 22%) or significantly increased from 19.4% to 29.8%. This pattern was likely a consequence of the significant changes in competitive dominance between species pairs (26 changes out of 45; 58%). Although fitness differences were equalised and intransitive competition promoted, our model predicted a lower likelihood of coexistence under the extreme event for both species pairs and triplets, mainly because competitive interactions did not promote enough niche differences to balance the observed fitness asymmetries in our competitive networks. Synthesis. We empirically proved that an extreme climate results in communities with reduced niche and fitness differences in which species are less likely to coexist despite the increasing prevalence of intransitive competition., Was funded by a Juan de la Cierva grant (FPDI-2013-15867). O.G. acknowledges postdoctoral financial support provided by the Spanish Ministry for Education and Science (Juan de la Cierva, JCI-2012-12061), and by the European Union Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie grant agreement No 661118-BioFUNC. Funding support to conduct the experiment was provided by the Spanish Ecological Terrestrial Society (AEET, Jóvenes Investigadores grant 2014/2). L.G.-A. acknowledges support from the MICINN project INTERCAPA (CGL-2014-56739-R) and European FEDER Funds. I.M.P.-R thanks the funding provided by the Ramón & Cajal Research Programme (RYC-2013-13937) and the Spanish MINECO project DECAFUN (CGL2015-70123-R)., Peer reviewed

Los datos pertenecen al trabajo: Gómez, E.J., Delgado, J.A., González, J.M. (2020) Environmental factors affect the response of microbial extracellular enzyme activity in soils when determined as a funciton of water availability and temperature. Ecology and Evolution (Artícle in press), Figure 2. Extracellular glucosidase activity at 20ºC (A) and 60ºC (B) as a function of water activity for different soils. Enzyme activity is presented as percentage of maximum activity for each soil. Error bars represent the standard deviation. Symbols represent different soils: Black square, Galicia; Grey square, Aragón; Black triangle, Salamanca; Grey triangle, Seville; Black circle and dashed line, Cádiz. Figure 3. Extracellular phosphatase activity at 20ºC (A) and 60ºC (B) as a function of water activity for different soils. Enzyme activity is presented as percentage of maximum activity for each soil. Error bars represent the standard deviation. Symbols represent different soils: Black square, Galicia; Grey square, Aragón; Black triangle, Salamanca; Grey triangle, Seville; Black circle and dashed line, Cádiz. Figure 4. Extracellular protease activity at 20ºC (A) and 60ºC (B) as a function of water activity for different soils. Enzyme activity is presented as percentage of maximum activity for each soil. Error bars represent the standard deviation. Symbols represent different soils: Black square, Galicia; Grey square, Aragón; Black triangle, Salamanca; Grey triangle, Seville; Black circle and dashed line, Cádiz., This study was supported by funding through projects from the Spanish Ministry of Economy and Competitiveness (CGL2014-58762-P) and the Regional Government of Andalusia (RNM2529). These projects have been cofunded by FEDER funds., Peer reviewed

The item is made of 5 files: 1) README.txt; 2) AT_NNGv2_climatology.nc contains the climatology of AT computed with NNGv2 in netcdf4 format and the climatologies of oxygen (median filtered from WOA13), phosphate, nitrate and silicate (these three derived from CANYON-B); 3) NNGv2 is the neural network object used to create the climatology; 4)ATNNWOA13.mp4 is a video of the surface climatology, 3 vertical sections in the Pacific Ocean, Atlantic Ocean and Indean Ocean and, the variation in depth of one month (April); 5) Example.rar contains an example matrix of inputs to the neural network, the NNGv2.mat and a MATLAB script to compute AT with NNGv2, Dataset for the article https://doi.org/10.5194/essd-11-1109-2019, This research was supported by Ministerio de Educación, Cultura y Deporte (FPU grant FPU15/06026), Ministerio de Economía y Competitividad through the ARIOS (CTM2016-76146-C3-1-R) project co-funded by the Fondo Europeo de Desarrollo Regional 2014-2020 (FEDER) and EU Horizon 2020 through the AtlantOS project (grant agreement 633211), AT_NNGv2_climatology.nc.-- NNGv2.-- ATNNWOA13.mp4.-- Example.rar.-- README.txt, Peer reviewed

This dataset contains observations of elemental composition of atmospheric aerosols performed at Izaña Observatory, located (28◦18’N, 16◦29′W) at 2367 m.a.s.l. (meters above sea level), in Tenerife island. The measurements were performed with the objective of studying the variability of Saharan dust composition. The samples were analyzed with the technique PIXE (Particle Induced X ray Emission) at the Istituto Nazionale di Fisica Nucleare (INFN) at Florence (Italy). The variability of dust composition is compared with the variability of large-scale meteorology traced with the North African dipole Intensity (NAFDI), i.e. the differences of the anomaly of the geopotential heights at 700hPa between the subtropic (Morocco) and the tropic (Niger) in North Africa., This dataset was obtained within the frame of the projects POLLINDUST (reference CGL2011-26259) and AEROATLAN (reference CGL2015-66299-P), funded by the Minister of Economy and Competitiveness of Spain and by the European Regional Development Fund., Sheet <01-aerosols 2010, Sheet <02-NAFDI 2010>, Sheet <03-aerosols 2013>, Sheet <04-NAFDI 2013>., Peer reviewed

Mantellid frogs present an extensive adaptive radiation endemic to Madagascar and Comoros, being the subfamily Mantellinae the most morphologically and ecologically diverse. The Mantellinae present key innovative evolutionary traits linked to their unique reproductive behavior, including the presence of femoral glands and a derived vomeronasal organ. In addition, previous studies pointed to size differentiation in playing an important role in species’ dispersal capacities and shaping of their geographic ranges. Despite the high phenotypic variation observed in this clade, to date an exhaustive morphological analysis of their anatomy has still not been performed, much less in relation to internal structures. Here, we present a comprehensive skeletal description of a mantellid species, Blommersia transmarina, from the island of Mayotte in the Indian Ocean, which has potentially undergone a process of moderate gigantism compared to other Blommersia species. We describe its intraspecific skeletal variation utilizing non-destructive volume renderings from μCT-scans, and characterize the presence of sexual dimorphism and size covariation in skeletal structures. Notably, we found numerous signs of hyperossification, a novel structure for mantellids: the clavicular process, and the presence of several appendicular sesamoids. Our findings suggest that skeletal phenotypic variation in this genus may be linked to biomechanical function for reproduction and locomotion., Peer reviewed

Previous studies on the effects of bisphenol A (BPA; 4,4'-(propane-2,2-diyl)diphenol) in zebrafish identified lipid metabolism as particularly affected by BPA exposure. We perform here a lipidomic analysis in zebrafish eleutheroembryos exposed up to 8 mg/L of BPA from day 2 to day 6 post fertilization. Total lipids were analyzed by high-performance thin layer chromatography as wide-range preliminary screening. Selected conditions were used to obtain a high-quality lipid profile using ultra high-performance liquid chromatography/time-of-flight mass spectrometry. BPA specifically impaired the physiological consumption of triglycerides (TG), diglycerides (DG), phosphatidylcholines (PC) and phosphatidylinositols (PI), most of them yolk sac-related lipids. These effects seemed more related to a decrease in energy consumption in BPA exposed individuals than to an impairment of lipid transport from the yolk sac. Integration of these results with previous morphological, biochemical, transcriptomic, metabolomic and behavioral data suggests that changes on lipid metabolism first appeared at very low BPA concentrations, and that they propagated across different organization levels. The analysis also suggests that the disruption of different signalling pathways by BPA results in a combination of adverse outcomes (estrogenic and lipid disruption, eye development), making it advisable a tighter limitation on BPA exposure limits for both wildlife and human populations., This work was supported by the European Research Council under the European Union's Seventh Framework Programme (FP/ 2007-2013)/ERC Grant Agreement n. 320737. Some part of this study was also supported by grants from the Spanish Ministry of Economy and Competitiveness (CTQ2014-56777-R) and the Spanish Ministry of Science, Innovation and University (RTI2018-096175-B-I00). RM was supported by a FPU predoctoral fellow from the Spanish Ministry of Education and Science (ref. FPU15/03332). IF was supported by a FPI predoctoral fellow from the Spanish Ministry of Economy and Competitiveness (FPI-MICINN BES-2015-075023). We thank Juan Carlos Navarro and Josefina Casas for his valuable advice and expertise in the optimization of the thin-layer chromatography technique and liquid chromatography/ mass spectrometry, respectively., Peer reviewed

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