Resultados totales (Incluyendo duplicados): 44828
Encontrada(s) 4483 página(s)
Encontrada(s) 4483 página(s)
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/179734
Dataset. 2015
CHARACTERIZATION OF THE 3D INTERNAL STRUCTURE OF THE ALHAMA DE MURCIA FAULT (FAM) IN THE SEGMENTS GOÑAR-LORCA, LORCA-TOTANA AND TOTANA-ALHAMA
INTERGEO
- Martí, David
- Teixidó, T.
- Ardanaz, O.
- Dávila, L.
- Martínez-Díaz, J. J.
- Mendes, M.
- Carbonell, Ramón
The data acquisition contract was funded by the "Programa estatal de fomento de la investigación científica y técnica de excelencia-subprograma estatal de generación de conocimiento" of the Ministry of economy and competitiveness and took place in 2015. Seismic data was successfully collected in Alhama de Murcia (Spain). The total amount of seismic reflection data collected was 13.2 km in 6 profiles NW-SE oriented. Technical specifications of the profiles: Receiver number: 240, Receiver interval: 2 m, Source: accelerated weightdrop 250 kg, Source interval: 6 m, Sample rate: 1 ms, Record time: 4 s. Contact people: Martínez-Díaz, J.; jmdiaz@geo.ucm.es and Carbonell, R.; rcarbo@ictja.csic.es, This work is part of the research project: “InterGeo”. One of the main objectives of this project is to understand the seismogenetic behavior of the Alhama de Murcia Fault (FAM) located in the Betic Cordillera (Spain). In this study several intersegment areas were defined. Some structural and paleoseismic studies and geophysical surveys have been carried out on these zones., Research project reference code: CGL2013-47412-C2-1-P, Peer reviewed
DOI: http://hdl.handle.net/10261/179734
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/179734
HANDLE: http://hdl.handle.net/10261/179734
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/179734
PMID: http://hdl.handle.net/10261/179734
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/179734
Ver en: http://hdl.handle.net/10261/179734
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/179734
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/179736
Dataset. 2018
SIT4ME: INNOVATIVE SEISMIC IMAGING TECHNIQUES FOR MINING EXPLORATION - SOTIEL-ELVIRA (SPAIN) DATASET
- Alcalde, Juan
- Martínez, Y.
- Martí, David
- Ayarza, P.
- Ruiz Fernández, Mario
- Marzán, Ignacio
- Tornos, F.
- Malehmir, A.
- Gil, A.
- Buske, S.
- Orlowsky, D.
- Carbonell, Ramón
The acquired data comprises 2D/3D and 3C components. The acquisition employed 647 seismic receivers, distributed in a 3D mesh around the target and along six 2D crooked lines sampling the study area. The source employed was a 32 t vibroseis truck, operating at c. 900 points in the pathways along the 2D profiles. Each vibration point was used three times, with frequency sweeps of 10-100 Hz., Fair and sustainable production of raw materials is one of the main challenges faced by our society. Through
its RawMaterials Programme, the European Institute of Technology (EIT) encourages research and innovation
solutions for mineral exploration to make them safer, sustainable and cost-effective. The SIT4ME project, funded by EIT, addresses these objectives by undertaking seismic mineral exploration methods in crystalline tectonic settings, at a reduced cost. The SIT4Me project will analyse the efficiency of passive seismic methods (i.e. ambient noise interferometry) for subsurface imaging, by comparing active- and passive-source datasets in mining areas. The files in this dataset correspond to the controlled-source acquisition., European Institute of Innovation & Technology, Grant number EIT 17024, SIT4ME project, Peer reviewed
Proyecto: //
DOI: http://hdl.handle.net/10261/179736
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/179736
HANDLE: http://hdl.handle.net/10261/179736
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/179736
PMID: http://hdl.handle.net/10261/179736
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/179736
Ver en: http://hdl.handle.net/10261/179736
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/179736
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/179854
Dataset. 2013
HIGH RESOLUTION SEISMIC CHARACTERIZATION OF THE SHALLOW SUBSURFACE OF THE LORANCA BASIN (SPAIN): LOCAL 2D TRANSECTS
VICANAS 2D
- Marzán, Ignacio
- Martí, David
- Torné, Montserrat
- Ruiz Fernández, Mario
- Carbonell, Ramón
The data acquisition contract was awarded to ENRESA and took place in November and December 2013. Seismic data was successfully collected in the Záncara river basin (Cuenca, Spain). The total amount of seismic reflection data collected was 9.7 km in 4 high-resolution seismic reflection profiles E-W oriented. Technical specifications of the profiles: Seismometer: 10 24-channel GEODE ultra-light seismic recordes, Receiver number: 240, Receiver interval: 2 m, Source: accelerated weightdrop 250 kg and 100 kg, Source interval: 6 m, Sample rate: 1 ms, Record time: 4 s. Contact person: Carbonell, R., rcarbo@ictja.csic.es, A high-resolution 2-D seismic reflection survey was acquired to obtain a seismic image of the geological structure of the Záncara river basin (eastern Spain). The study area consists of lutites and gypsum from a Neogene sedimentary sequence. The project also targeted the geometry of the geological structure and the mechanical properties of the underground materials. In addition, this study allowed for an improvement of the geophysical acquisition technics and protocols that provided with a better resolution seismic imaging. Thus, reducing costs and improving the effectiveness of the seismic acquisition., Convenio Colaboración CSIC-ENRESA. Código CSIC: 20133830, Peer reviewed
Proyecto: //
DOI: http://hdl.handle.net/10261/179854
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/179854
HANDLE: http://hdl.handle.net/10261/179854
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/179854
PMID: http://hdl.handle.net/10261/179854
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/179854
Ver en: http://hdl.handle.net/10261/179854
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/179854
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/179856
Dataset. 2014
HIGH RESOLUTION SEISMIC CHARACTERIZATION OF THE SHALLOW SUBSURFACE OF THE LORANCA BASIN (SPAIN): HIGH RESOLUTION 3D
VICANAS 3D
- Marzán, Ignacio
- Martí, David
- Torné, Montserrat
- Ruiz Fernández, Mario
- Carbonell, Ramón
The data acquisition contract was awarded to ENRESA and took place in January 2014. Seismic data was successfully collected in the Záncara river basin (Cuenca, Spain). This is a high-resolution seismic tomography survey to obtain a full 3-D P-wave seismic velocity image of the studied area. A regular and dense grid of 676 shots and 1200 receivers was used to image a 500 m x 500 m area of the shallow surface. A 240-channel system and a seismic source, consisting of an accelerated weight drop, were used in the acquisition. Half a million travel-time picks were inverted to provide the 3-D seismic velocity distribution up to 120 m depth. The 3-D survey was acquired in five swaths, each one consisting on five receiver lines, resulting in a total of 3380 shot gathers. Technical specifications of the profiles: Receiver number: 240, Receiver interval: 2 m, Source accelerated weightdrop: 250 kg, Source interval: 6 m, Sample rate: 1 ms, Record time: 4 s., In this repository, in addition to the seismic 3DSurvey, a resistivity model (VICANAS_3D_Res_UTM30), a lithological model (VICANAS_3D_Vp_Res_Lito_UTM30), and a training set (VICANAS_Training_set) are available. In order to improve the geological interpretation of the seismic tomography, we integrated it with the resistivity model to build a 3D lithological model. To this aim, we created a new bi-parameter grid with Vp and Res values at each node. Then, we lithologically classified the nodes using supervised learning according to a training set extracted from the wells., A high-resolution seismic tomography survey was acquired to obtain a full 3-D P-wave seismic velocity image of the Záncara river basin (eastern Spain). The study area consists of lutites and gypsum from a Neogene sedimentary sequence. The project also targeted the geometry of the underground structure with emphasis on defining the lithological contacts but also the presence of cavities and faults or fractures. An extensive drilling campaign provided uniquely tight constraints on the lithology; these included core samples and wireline geophysical measurements. The analysis of the well log data enabled the accurate definition of the lithological boundaries and provided an estimate of the seismic velocity ranges associated with each lithology. The final joint interpreted image reveals a wedge-shaped structure consisting of four different lithological units. The study features the necessary key elements to test the travel time tomographic inversion approach for the high-resolution characterization of the shallow surface. In this methodological validation test, travel-time tomography demonstrated to be a powerful tool with a relatively high capacity for imaging in detail the lithological contrasts of evaporitic sequences located at very shallow depths, when integrated with additional geological and geophysical data., Convenio Colaboración CSIC-ENRESA. Código CSIC: 20133830, Peer reviewed
Proyecto: //
DOI: http://hdl.handle.net/10261/179856
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/179856
HANDLE: http://hdl.handle.net/10261/179856
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/179856
PMID: http://hdl.handle.net/10261/179856
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/179856
Ver en: http://hdl.handle.net/10261/179856
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/179856
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/180311
Dataset. 2019
REGULACIÓN POR CIANURO DEL DESARROLLO DEL PELO RADICAL Y LA RESPUESTA A PATÓGENOS EN ARABIDOPSIS THALIANA
- Arenas-Alfonseca, Lucía
Material suplementario Tesis Doctoral Lucía Arenas Alfonseca, El cianuro es una molécula tóxica que se produce estequiométicamente en la ruta de biosíntesis del etileno. En Arabidopsis thaliana, el cianuro es destoxificado mayoritariamente por la enzima mitocondrial β-cianoalanina sintasa (CAS-C1). El análisis molecular y fenotípico de los mutantes insercionales de T-DNA de CAS-C1 realizado previamente por nuestro grupo de investigación proponía un papel señalizador del cianuro en los procesos de desarrollo del pelo radical y la respuesta a la infección por patógenos. Se observó una acumulación apical de la proteína de fusión CASC1-GFP mediante microscopía confocal en las mitocondrias de la punta del pelo radical que no se observó en los mutantes de pelo radical cas-c1, scn1-1 ni rhd2. Tanto el análisis transcripcional de los mutantes simples cas-c1, scn1-1 y rhd2 como el fenotípico de los dobles mutantes scn1-1 cas-c1 y rhd2 cas-c1, así como su crecimiento en medios con el antídoto del cianuro hidroxocobalamina demostraron que la mutación cas-c1 es hipostática a scn1-1 y epistática sobre rhd2. Por tanto, el cianuro regula el proceso de formación del pelo radical en etapas muy tempranas del desarrollo. Además, las tinciones específicas de especies reactivos de oxígeno (ROS) y las actividades enzimáticas NADPH oxidasa y glutatión peroxidasa realizadas demostraron que el efecto del cianuro en los pelos radicales es independiente de la acumulación de ROS y de la inhibición de las NADPH oxidasas de raíz. Por otro lado, los análisis transcripcionales de los mutantes simples atrbohD3, NahG y ein2-1 sugirieron una participación del cianuro en la ruta de respuesta a patógenos biótrofos, que se confirmó en los ensayos de infección de los mutantes dobles atrbohD3 cas-c1 y NahG cas-c1 con la bacteria biótrofa Pseudomonas syringae, en los que el cianuro presentó una mayor resistencia a la infección. La observación al microscopio confocal de la proteína de fusión NPR1-GFP y la inmunodetección de NPR1 mostraba una menor cantidad de proteína NPR1 monomérica y, por tanto, funcional, en el mutante cas-c1. Así pues, el cianuro regula positivamente la respuesta a patógenos biótrofos mimetizando la función de la NADPH oxidasa ATRBOHD y esta regulación es dependiente de la acumulación de SA e independiente de la función de la proteína NPR1. Finalmente, se ha identificado un nuevo mecanismo de acción del cianuro a través del cual podría regular la formación del pelo radical y la respuesta a patógenos biótrofos: la modificación post-traduccional S-cianilación., Peer reviewed
Proyecto: //
DOI: http://hdl.handle.net/10261/180311
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/180311
HANDLE: http://hdl.handle.net/10261/180311
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/180311
PMID: http://hdl.handle.net/10261/180311
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/180311
Ver en: http://hdl.handle.net/10261/180311
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/180311
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/180630
Dataset. 2019
POOL-SEQ DROSEU 2014 SAMPLES VCF FILE
- Kapun, Martin
- Barrón, Maite G.
- Staubach, Fabian
- Vieira, Jorge
- Obbard, Darren, J.
- Rota-Stabelli, Omar
- Kankare, Maaria
- Haudry, Annabelle
- Wiberg, R. Axel W.
- Waidele, Lena
- Kozeretska, Iryna
- Pasyukova, Elena G.
- Loeschcke, Volker
- Pascual, Marta
- Vieira, Cristina P.
- Serga, Svitlana
- Montchamp-Moreau, Catherine
- Abbott, Jessica
- Gibert, Patricia
- Porcelli, Damiano
- Posnien, Nico
- Grath, Sonja
- Sucena, Élio
- Bergland, Alan O.
- Garcia Guerreiro, Maria Pilar
- Onder, Banu Sebnem
- Argyridou, Eliza
- Guio, Lain
- Schou, Mads Fristrup
- Deplancke, Bart
- Vieira, Cristina
- Ritchie, Michael G.
- Zwaan, Blas J.
- Tauber, Eran
- Orengo, Dorcas J.
- Puerma, Eva
- Aguadé i Porres, Montserrat
- Schmidt, Paul S.
- Parsch, John
- Betancourt, Andrea J.
- Flatt, Thomas
- González Pérez, Josefa
VCF file containing allele variant information of the 48 Drosophila melanogaster samples collected in 32 different locations and 13 countries in Europe over 2014 by the DrosEU consortium members., Peer reviewed
DOI: http://hdl.handle.net/10261/180630
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/180630
HANDLE: http://hdl.handle.net/10261/180630
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/180630
PMID: http://hdl.handle.net/10261/180630
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/180630
Ver en: http://hdl.handle.net/10261/180630
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/180630
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/182615
Dataset. 2019
DATASET FROM PRE-SWOT MULTI-PLATFORM EXPERIMENT$MESOSCALE AND SUB-MESOSCALE VERTICAL EXCHANGES FROM MULTI-PLATFORM
EXPERIMENTS AND SUPPORTING MODELLING SIMULATIONS: ANTICIPATING SWOT LAUNCH
(PRE-SWOT)-->
DATASET FROM PRE-SWOT MULTI-PLATFORM EXPERIMENT
MESOSCALE AND SUB-MESOSCALE VERTICAL EXCHANGES FROM MULTI-PLATFORM EXPERIMENTS AND SUPPORTING MODELLING SIMULATIONS: ANTICIPATING SWOT LAUNCH (PRE-SWOT)
- Pascual, Ananda
- Barceló-Llull, Bàrbara
- Cutolo, Eugenio
- Díaz-Barroso, Lara
- Allen, John T.
- Sánchez-Román, Antonio
- Alou-Font, Eva
- Antich-Homar, Helena
- Carbonero, Andrea
- Casas, Benjamín
- Charcos-Llorens, Miguel
- Cyr, Frederic
- Doglioli, Andrea M.
- Fernández, Juan Gabriel
- Gomez-Navarro, Laura
- Muñoz, Cristian
- Roque, David
- Ruiz, Inmaculada
- Ruiz, Simón
- Ser-Giacomi, Enrico
- Torner, Marc
This dataset includes published and unpublished in-situ data collected during the PRE-SWOT multi-platform experiment. For details see readme file and cruise report (hdl.handle.net/10261/172644 dx.doi.org/10.20350/digitalCSIC/8584)., The PRE-SWOT experiment was conducted onboard R/V García del Cid between 5 and 17 May 2018 in the southern region of the Balearic Islands (western Mediterranean Sea). PRE-SWOT aimed at anticipating the daily high-resolution 2D SSH fields that Surface Water & Ocean Topography (SWOT) will provide during the fast sampling phase after launch in selected areas of the global ocean. This experiment is a contribution to the preparatory SWOT cal/val activities and was coordinated with the PROTEUS-SWOT cruise (R/V Beautemps-Beauprè). The PRE-SWOT project (CTM2016-78607-P) is funded by the Spanish Research Agency and the European Regional Development Fund (AEI/FEDER, UE)., Spanish Research Agency and the European Regional Development Fund
(AEI/FEDER, UE)., Peer reviewed
Proyecto: MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/CTM2016-78607-P
DOI: http://hdl.handle.net/10261/182615
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/182615
HANDLE: http://hdl.handle.net/10261/182615
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/182615
PMID: http://hdl.handle.net/10261/182615
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/182615
Ver en: http://hdl.handle.net/10261/182615
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/182615
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/183071
Dataset. 2019
IBERIA01: DAILY GRIDDED (0.1º RESOLUTION) DATASET OF PRECIPITATION AND TEMPERATURES OVER THE IBERIAN PENINSULA
- Gutiérrez, José M.
- Herrera, Sixto
- Cardoso, Rita M.
- Matos Soares, Pedro
- Espírito-Santo, Fátima
- Viterbo, Pedro
The present work introduces a new observational gridded dataset produced using a dense network (thousands) of stations over the Iberian Peninsula (referred to as Iberia01), providing daily precipitation and temperatures for the period 1971-2015 at 0.1º (~10km) resolution., Iberia01 is based on a dense network of 3847 precipitation stations and over 380 temperature stations from the Spanish Agency of Meteorology (AEMET), the Portuguese Institute for Sea and Atmosphere (IPMA) and the Portuguese Environmental Agency (APA).
dc.relation.isbasedon: Spanish Meteorological Agency (AEMET); Portuguese Institute for Sea and Atmosphere (IPMA); Portuguese Environmental Agency (APA)
dc.relation.isbasedon: Herrera, S., J. Fernández, and G. J. M., 2015: Update of the spain02 gridded observational dataset for euro-cordex evaluation: assessing the effect of the interpolation methodology. International Journal of Climatology, 36, 900–908, doi: 10.1002/joc.4391
dc.relation.isbasedon: Herrera, S., J. M. Gutiérrez, R. Ancell, M. R. Pons, M. Frías, and J. Fernández, 2012: Development and analysis of a 50year highresolution daily gridded precipitation dataset over spain (spain02). International Journal of Climatology, 36, 74–85, doi:10.1002/joc.2256.
dc.relation.isbasedon: Herrera, S., S. Kotlarski, P. M. M. Soares, R. M. Cardoso, A. Jaczewski, J. M. Gutiérrez, and D. Maraun, 2018: Uncertainty in gridded precipitation products: Influence of station density, interpolation method and grid resolution. International Journal of Climatology, 0, doi:10.1002/joc.5878, Peer reviewed
Proyecto: //
DOI: http://hdl.handle.net/10261/183071
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/183071
HANDLE: http://hdl.handle.net/10261/183071
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/183071
PMID: http://hdl.handle.net/10261/183071
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/183071
Ver en: http://hdl.handle.net/10261/183071
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/183071
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/183996
Dataset. 2019
FIELD EXCLUSION OF LARGE SOIL PREDATORS IMPACTS LOWER TROPHIC LEVELS, AND DECREASES LEAF-LITTER DECOMPOSITION IN DRY FORESTS [DATASET]
- Melguizo-Ruiz, Nereida
- Jiménez-Navarro, Gerardo
- Mas, Eva de
- Pato Fernández, Joaquina
- Scheu, Stefan
- Austin, Amy T.
- Wise, David H.
- Moya-Laraño, Jordi
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
Proyecto: MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/CGL2015-66192-R
DOI: http://hdl.handle.net/10261/183996
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/183996
HANDLE: http://hdl.handle.net/10261/183996
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/183996
PMID: http://hdl.handle.net/10261/183996
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/183996
Ver en: http://hdl.handle.net/10261/183996
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/183996
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/183909
Dataset. 2018
VITAL RATES AND COMPETITION COEFICIENTS [DATASET]
VITAL RATES AND COMPETITION COEFICIENTS FOR CONTROL ENVIRONMENT AND ESTREME DROUGHT (TREATMENT)
- Matías Resina, Luis
- Godoy, Óscar
- Gómez Aparicio, Lorena
- Pérez-Ramos, Ignacio Manuel
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
DOI: http://hdl.handle.net/10261/183909
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/183909
HANDLE: http://hdl.handle.net/10261/183909
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/183909
PMID: http://hdl.handle.net/10261/183909
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/183909
Ver en: http://hdl.handle.net/10261/183909
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/183909
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