Person:
Barrientos Yuste, Rafael

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First Name
Rafael
Last Name
Barrientos Yuste
URI
https://hdl.handle.net/20.500.14352/81128
Affiliation
Universidad Complutense de Madrid
Faculty / Institute
Ciencias Biológicas
Department
Biodiversidad, Ecología y Evolución
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2012 - 201912020 - 20212
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Author: Martín De La Calle, Carlos Alfonso ×

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Now showing 1 - 3 of 3
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    Quantifying and addressing the prevalence and bias of study designs in the environmental and social sciences
    (Nature Communications, 2020) Christie, Alec P.; Abecasis, David; Adjeroud, Mehdi; Alonso, Juan C.; Amano, Tatsuya; Anton, Álvaro; Baldigo, Barry P.; Barrientos Yuste, Rafael; Bicknell, Jack E.; Buhl, Deborah A.; Cebrian, Just; Ceia, Ricardo S.; Cibils-Martina, Ricardo; Clarke, Sarah; Claudet, Joachim; Craig, Michael D.; Davoult, Dominique; De Backer, Annelies; Donovan, Mary K.; Eddy, Tyler D.; França, Filipe M.; Gardner, Jonathan P. A.; Harris, Bradley P.; Huusko, Ari; Jones, Ian L.; Kelaher, Brendan P.; Kotiaho, Janne S.; López-Baucells, Adrià; Major, Heather L.; Mäki-Petäys, Aki; Martín, Beatriz; Martín De La Calle, Carlos Alfonso; Martin, Philip A.; Mateos-Molina, Daniel; McConnaughey, Robert A.; Meyer, Christoph F. J.; Mills, Kade; Montefalcone, Monica; Noreika, Norbertas; Palacín, Carlos; Pande, Anjali; Pitcher, C. Roland; Ponce, Carlos; Rinella, Matt; Rocha, Ricardo; Ruiz-Delgado, María C.; Schmitter-Soto, Juan J.; Shaffer, Jill A.; Sharma, Shailesh; Sher, Anna A.; Stagnol, Doriane; Stanley, Thomas R.; Stokesbury, Kevin D. E.; Torres, Aurora; Tully, Oliver; Vehanen, Teppo; Watts, Corinne; Zhao, Quingyuan; Sutherland, William J.
    Building trust in science and evidence-based decision-making depends heavily on the credibility of studies and their findings. Researchers employ many different study designs that vary in their risk of bias to evaluate the true effect of interventions or impacts. Here, we empirically quantify, on a large scale, the prevalence of different study designs and the magnitude of bias in their estimates. Randomised designs and controlled observational designs with pre-intervention sampling were used by just 23% of intervention studies in biodiversity conservation, and 36% of intervention studies in social science. We demonstrate, through pairwise within-study comparisons across 49 environmental datasets, that these types of designs usually give less biased estimates than simpler observational designs. We propose a model-based approach to combine study estimates that may suffer from different levels of study design bias, discuss the implications for evidence synthesis, and how to facilitate the use of more credible study designs.
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    Wire marking results in a small but significant reduction in avian mortality at power lines: a BACI designed study
    (PLoS ONE, 2012) Ponce, Carlos; Palacín, Carlos; Martín De La Calle, Carlos Alfonso; Martín, Beatriz; Alonso, Juan Carlos; Barrientos Yuste, Rafael
    Background Collision with electric power lines is a conservation problem for many bird species. Although the implementation of flight diverters is rapidly increasing, few well-designed studies supporting the effectiveness of this costly conservation measure have been published. Methodology/Principal Findings We provide information on the largest worldwide marking experiment to date, including carcass searches at 35 (15 experimental, 20 control) power lines totalling 72.5 km, at both transmission (220 kV) and distribution (15 kV–45 kV) lines. We found carcasses of 45 species, 19 of conservation concern. Numbers of carcasses found were corrected to account for carcass losses due to removal by scavengers or being overlooked by researchers, resulting in an estimated collision rate of 8.2 collisions per km per month. We observed a small (9.6%) but significant decrease in the number of casualties after line marking compared to before line marking in experimental lines. This was not observed in control lines. We found no influence of either marker size (large vs. small spirals, sample of distribution lines only) or power line type (transmission vs. distribution, sample of large spirals only) on the collision rate when we analyzed all species together. However, great bustard mortality was slightly lower when lines were marked with large spirals and in transmission lines after marking. Conclusions Our results confirm the overall effectiveness of wire marking as a way to reduce, but not eliminate, bird collisions with power lines. If raw field data are not corrected by carcass losses due to scavengers and missed observations, findings may be biased. The high cost of this conservation measure suggests a need for more studies to improve its application, including wire marking with non-visual devices. Our findings suggest that different species may respond differently to marking, implying that species-specific patterns should be explored, at least for species of conservation concern.
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    Project number: 123
    Hacia una docencia universitaria bilingüe: Análisis y evaluación del interés de los estudiantes pregraduados en Biología por una enseñanza en inglés
    (2021) Pulido Delgado, Francisco; Agorreta Calvo, Ainhoa; Alonso López, Javier Antonio; Aragon Carrera, Pedro; Arriero Higueras, Elena; Barrientos Yuste, Rafael; Díaz González-Serrano, José Augusto; Dominguez Lozano, Felipe; Galván Arcones, Sofía; García Esteban, María Teresa; Gutiérrez Cañas, Irene; Jiménez Gallardo, Lucía Gloria; Lorente Martínez, Hector; Madrid González, Ricardo; Martín De La Calle, Carlos Alfonso; Martínez Galvez, David; Munar Delgado, Gabriel; Novo Rodríguez, Marta; Pérez García, Selene; Pérez Gomariz, Rosa María; Pérez Tris, Javier; Pias Couso, María Beatriz; Pineda Pampliega, Javier; Quiles Tundidor, Pablo; Ramírez García, Álvaro; Redondo González, Lara; Remacha Sebastián, Carolina; San Mauro Martín, Diego; Sánchez de Dios, Rut; Sánchez García, María Cristina
    El objetivo de este proyecto era evaluar el interés de los estudiantes de Biología por un grado bilingüe. Mediante cuestionarios, seminarios informativos y clases en inglés se identificaron las variables que afectan a la demanda y la perspectiva de éxito. Demostramos que los estudiantes del Grado en Biología tienen buen nivel de inglés y están muy interesados en una docencia en inglés. Desearían cursos o clases en inglés a partir del primer curso. El interés se basa sobre todo en el deseo de poder trabajar y estudiar en el extranjero. Actividades en inglés y seminarios informativos incrementarían el interés y la demanda de docencia en inglés.