De Plantis Legionensibus. Nota III

Como continuación de las anteriores notas florísticas, se complementa el catálogo provincial con una docena de táxones, resultado de diversas recolecciones botánicas efectuadas por distintas zonas del territorio leonés. As following the former check list notes on Ledn area, twelve taxa are recorded by the firs time for this area

Parallel 3-D marine controlled-source electromagnetic modelling using high-order tetrahedral Nédélec elements

We present a parallel and high-order Nédélec finite element solution for the marine controlled-source electromagnetic (CSEM) forward problem in 3-D media with isotropic conductivity. Our parallel Python code is implemented on unstructured tetrahedral meshes, which support multiple-scale structures and bathymetry for general marine 3-D CSEM modelling applications. Based on a primary/secondary field approach, we solve the diffusive form of Maxwell’s equations in the low-frequency domain. We investigate the accuracy and performance advantages of our new high-order algorithm against a low-order implementation proposed in our previous work. The numerical precision of our high-order method has been successfully verified by comparisons against previously published results that are relevant in terms of scale and geological properties. A convergence study confirms that high-order polynomials offer a better trade-off between accuracy and computation time. However, the optimum choice of the polynomial order depends on both the input model and the required accuracy as revealed by our tests. Also, we extend our adaptive-meshing strategy to high-order tetrahedral elements. Using adapted meshes to both physical parameters and high-order schemes, we are able to achieve a significant reduction in computational cost without sacrificing accuracy in the modelling. Furthermore, we demonstrate the excellent performance and quasi-linear scaling of our implementation in a state-of-the-art high-performance computing architecture.This project has received funding from the European Union's Horizon 2020 programme under the Marie Sklodowska-Curie grant agreement No. 777778. Furthermore, the research leading to these results has received funding from the European Union's Horizon 2020 programme under the ChEESE Project (https://cheese-coe.eu/ ), grant agreement No. 823844. In addition, the authors would also like to thank the support of the Ministerio de Educación y Ciencia (Spain) under Projects TEC2016-80386-P and TIN2016-80957-P. The authors would like to thank the Editors-in-Chief and to both reviewers, Dr. Martin Cuma and Dr. Raphael Rochlitz, for their valuable comments and suggestions which helped to improve the quality of the manuscript. This work benefited from the valuable suggestions, comments, and proofreading of Dr. Otilio Rojas (BSC). Last but not least, Octavio Castillo-Reyes thanks Natalia Gutierrez (BSC) for her support in CSEM modeling with BSIT.Peer ReviewedPostprint (author's final draft

Notas sobre flora alóctona leonesa

Notes on non-native flora from LeónPalabras clave. Flora alóctona, aliens, flora invasora, corología, León, España.Key words. Non-native flora, alien flora, invasive flora, chorology, León, Spain

La clase Pino-Juniperetea en la provincia de León

Se ha realizado un estudio fitosociológico tanto de los sabinares montanos, como de los enebrales rastreros subalpinos y oromediterraneos, en la provincia de León, describiéndose cuatro nuevas subasociaciones: Juniperetum sabino-thuriferae quercetosum fagineae, Genisto sanabrensis-Juniperetum nanae echinospartetosum iberici y vaccinietosum uliginosi y Vaccinio myrtilli-Juniperetum nanae jasionetosum brevisepalae.In this paper a phytosociological study about montanous savin forets and, subalpine and oromediterranean creeping juniper shrubs in Leon province (NW Spain) is made.Four new subassociations are described: Juniperetum sahino-thunferae quercetosum fagineae, Gen isto sanabrensis-Juniperetum nanae echinospartetosum iberici and vaccinietosum uliginosi and Vaccinio myrtilli-Juniperetum nanae jasionetosumbrevisepalae

Sobre la flora de la provincia de León

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Referencias corológicas de plantas vasculares en el NW ibérico

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Nuevas aportaciones al Atlas de la Pteridoflora Ibérica y Balear (APIB

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Notas sobre flora leonesa amenzada

Se aportan citas nuevas para 34 taxones de flora vascular incluidos en el Catálogo de Flora Protegida de Castilla y León y/o en la Lista Roja de la Flora Vascular Española, de los que se conocían pocas (o ninguna) localidades leonesas.SUMMARY: We provide new records of 34 taxa included in the Catalogue of Protected Flora of Castilla y León and/or in the Red List of Spanish Vascular Flora. Some of them represent additions to the checklist of flora of the province of León and the distribution of the others is not well known