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

Data about threatened vascular flora from the León province (NW Spain). Present position

En este trabajo se aportan datos sobre una serie de taxones presentes en la provincia de León e incluidos en la Lista Roja de la Flora Vascular Española. Asimismo, se analiza el estado actual de otros taxones interesantes desde el punto de vista conservacionista.In this paper, data about several taxa present in the province of León and included in the Red List of Spanish Vascular Flora are provided. Likewise, present position about other interesting taxa are studied from the conservation point of view

Caracterización geoquímica preliminar de los metatasedimentos ordovicicos del sinforme de Alcanices (Zamora)

The geochemistry of the Ordovician metasediments and associated Fe sedimentary mineralizations of the South limb of the Alcañices Synform suggest a siliceous nature for the Cabeza de las Viñas (pre-Arenigian) and Pielgo Quartzite (Arenigian) Formations as compared with the essentially aluminic character of the Latedo (Llanvirnian-Llandeilian) Formation and a sediment essentially formed of Fe oxyhydroxides, quartz and clay minerals as precursors of the Fe mineralizations.La caracterización geoquímica de los metasedimentos ordovícicos y mineralizaciones sedimentarias de Fe asociadas del flanco S del Sinforme de Alcañices permite establecer que, las formaciones Cabeza de las Viñas (infra-Arenig) y Cuarcitas del Pielgo (Arenig) son de naturaleza silícea frente a la esencialmente alumínica de la Fm. Latedo (Llanvirn-Llandeilo) y, un sedimento constituido esencialmente por oxi-hidróxidos de Fe, cuarzo y minerales arcillosos como precursor de las mineralizaciones de Fe

Genomic signatures of drift and selection driven by predation and human pressure in an insular lizard

Genomic divergence was studied in 10 small insular populations of the endangered Balearic Islands lizard (Podarcis lilfordi) using double digest restriction-site associated DNA sequencing. The objectives were to establish levels of divergence among populations, investigate the impact of population size on genetic variability and to evaluate the role of different environmental factors on local adaptation. Analyses of 72,846 SNPs supported a highly differentiated genetic structure, being the populations with the lowest population size (Porros, Foradada and Esclatasang islets) the most divergent, indicative of greater genetic drift. Outlier tests identified ~ 2% of loci as candidates for selection. Genomic divergence-Enviroment Association analyses were performed using redundancy analyses based on SNPs putatively under selection, detecting predation and human pressure as the environmental variables with the greatest explanatory power. Geographical distributions of populations and environmental factors appear to be fundamental drivers of divergence. These results support the combined role of genetic drift and divergent selection in shaping the genetic structure of these endemic island lizard populations

De plantis legionensibus. Notula XIV

P. 259-262Se cuan por primera vez para la flora leonesa los siguientes táxones: Ammoides pusilla (Brol.) Breistr., Astragalus cymbica/-pos Brot., Cistus c~ispus L., Diplataxis ml//abs (L.) DC., Paran ychia echinulata Chater, Ferula commu//is L. subsp. communis, Hype/-icum tome/Itosum L., O/laya kachii Heywood, 0/abanche sangui/lea C. Presí., Trifolium suffacatutn L. y Orc-líis papilio//acea L. Así mismo, se aportan datos corológicos de algunos otros táxones.S

The plants from León province: note XVI

Se aportan datos florísticos, ecológicos, corológicos y fitosociológicos sobre algunas plantas nuevas o interesantes de la provincia de León (España)

Escape distance and escape latency following simulated rapid bird attacks in an Andean lizard, Phymaturus williamsi

Predatory birds represent the greatest risk for many lizard species. However, little is known about the functional relationship between the escape distance and escape latency of lizards during a rapid bird attack. We hypothesised that escape latency and distance in the Andean lizard species Phymaturus williamsi would increase proportionally, but vary according to the means of escape. Over a three-year period we observed seven types of antipredatory behaviour in 98% P. williamsi lizards on simulated predatory bird attacks. Escape distance and latency were positively correlated. 65% of lizards emerged from their refuge within 2 min of an attack. All of these behaviours were positively correlated with escape latency and distance, although we found the former to be more precise. This study contributes to a better understanding of the general antipredatory behaviour in this species of Andean lizard, and will assist in future decisions concerning its conservation.Fil: Fava, Gustavo Alfredo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Centro de Investigaciones de la Geosfera y Biosfera. Universidad Nacional de San Juan. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones de la Geosfera y Biosfera; ArgentinaFil: Acosta, Juan Carlos. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Físicas y Naturales; Argentin

The first transcriptome of Italian wall lizard, a new tool to infer about the Island Syndrome

Some insular lizards show a high degree of differentiation from their conspecific mainland populations, like Licosa island lizards, which are described as affected by Reversed Island Syndrome (RIS). In previous works, we demonstrated that some traits of RIS, as melanization, depend on a differential expression of gene encoding melanocortin receptors. To better understand the basis of syndrome, and providing raw data for future investigations, we generate the first de novo transcriptome of the Italian wall lizard. Comparing mainland and island transcriptomes, we link differences in life-traits to differential gene expression. Our results, taking together testis and brain sequences, generated 275,310 and 269,885 transcripts, 18,434 and 21,606 proteins in Gene Ontology annotation, for mainland and island respectively. Variant calling analysis identified about the same number of SNPs in island and mainland population. Instead, through a differential gene expression analysis we found some putative genes involved in syndrome more expressed in insular samples like Major Histocompatibility Complex class I, Immunoglobulins, Melanocortin 4 receptor, Neuropeptide Y and Proliferating Cell Nuclear Antigen

Search for new phenomena in monophoton final states in proton-proton collisions at root s=8 TeV

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