Datos sobre Prunus lusitánica L. (Rosaceae) en Galicia

Se aportan nuevas localidades de Prunus lusitanica en Galicia de las que se detalla sus coordenadas geográficas (cuadrícula UTM de 1 x 1 Km). Se incorporan datos sobre el tipo de vegetación y hábitat en el que se encuentra cada población. Se discute la inclusión como especie característica de los diferentes tipos de vegetación a los que ha sido adscrito el taxón en el área estudiada

A multi-scale modelling framework to guide management of plant invasions in a transboundary context

Background Attention has recently been drawn to the issue of transboundary invasions, where species introduced and naturalized in one country cross international borders and become problematic in neighbouring countries. Robust modelling frameworks, able to identify the environmental drivers of invasion and forecast the current and future potential distribution of invasive species, are needed to study and manage invasions. Limitations due to the lack of species distribution and environmental data, or assumptions of modelling tools, often constrain the reliability of model predictions. Methods We present a multiscale spatial modelling framework for transboundary invasions, incorporating robust modelling frameworks (Multimodel Inference and Ensemble Modelling) to overcome some of the limitations. The framework is illustrated using Hakea sericea Schrad. (Proteaceae), a shrub or small tree native to Australia and invasive in several regions of the world, including the Iberian Peninsula. Two study scales were considered: regional scale (western Iberia, including mainland Portugal and Galicia) and local scale (northwest Portugal). At the regional scale, the relative importance of environmental predictors sets was evaluated and ranked to determine the main general drivers for the species distribution, while the importance of each environmental predictor was assessed at the local scale. The potential distribution of H. sericea was spatially projected for both scale areas. Results Model projections for western Iberia suggest that a large area is environmentally suitable in both Portugal and Spain. Climate and landscape composition sets were the most important determinants of this regional distribution of the species. Conversely, a geological predictor (schist lithology) was more important in explaining its local-scale distribution. Conclusions After being introduced to Portugal, H. sericea has become a transboundary invader by expanding in parts of Galicia (Spain). The fact that a larger area is predicted as environmentally suitable in Spain raises concerns regarding its potential continued expansion. This highlights the importance of transboundary cooperation in the early management of invasions. By reliably identifying drivers and providing spatial projections of invasion at multiple scales, this framework provides insights for the study and management of biological invasions, including the assessment of transboundary invasion risk.This work was funded by FEDER funds through the Operational Programme for Competitiveness Factors - COMPETE and by National Funds through FCT - Foundation for Science and Technology under the project PTDC/AAGMAA/4539/2012 / FCOMP-01-0124-FEDER-027863 (IND_CHANGE). J. Vicente is supported by POPH/FSE funds and by National Funds through FCT - Foundation for Science and Technology through Post-doctoral grant SFRH/BPD/84044/2012. D.M. Richardson acknowledges support from the DST-NRF Centre of Excellence for Invasion Biology and the National Research Foundation (grant 85417).info:eu-repo/semantics/publishedVersio

Prunus lusitanica L. (Rosaceae) en A Coruña (Galicia, NW Península Ibérica)

First data of Prunus lusitanica in A Coruña province. Habitat is detailed and a recently introduction by ornithocory from individuals cultivated in gardening is proposed.Primera cita provincial de Prunus lusitanica en A Coruña. Se explican las características del ecosistema donde aparece y su origen por ornitocoria. Se postula como fuente de diásporas a la utilización del árbol en jardinería

Notas sobre Thymelaea hirsuta (L.) Endl. y Thymelaea lythroides Barratte & Murb. en la provincia de Sevilla (España)

Thymelaea lythroides is a threatened species with only two known populations in the Iberian Peninsula. A new population is located and data are provided on the surrounding vegetation, the spatial distribution and the sex ratio of the individuals that comprise it. Two releves are also provided with Thymelaea hirsuta and the vegetation series in which this plant appears, which is a novelty for the province of Seville, is discussed.Thymelaea lythroides es una especie amenazada de la que se conocen sólo dos poblaciones en la Península Ibérica. Se localiza una nueva población de la que se aportan datos sobre la vegetación circundante, la distribución espacial y la relación de sexos de los individuos que la conforman. También se aportan dos inventarios con Thymelaea hirsuta y se discute la serie de vegetación en la que aparece esta planta que resulta novedad para la provincia de Sevilla

Notes on the Galician Flora, XVII

Presentamos un nuevo capítulo dentro de la serie de contribuciones al conocimiento actualizado de la Flora de Galicia, aportando información de interés corológico sobre 11 taxa recolectados: Bidens frondosa L., Crypsis alopecuroides (Piller & Mitterp.) Schrad., Cyperus fuscus L., Cyperus michelianus (L.) Link, Dittrichia graveolens (L.) Desf., Echinochloa crus-galli (L.) P. Beauv. subsp. hispidula (Retz.) Honda, Eragrostis curvula (Schrad.) Nees, Hypericum hirsutum L., Lindernia dubia (L.) Pennell, Polygonum x lenticulare Hy y Xanthium echinatum Murray subsp. italicum (Moretti) O. de Bolòs & J. Vigo. En total suponen 4 primeras citas regionales y 5 primeras citas provinciales; como caso excepcional se incluye una cita por ser la primera muestra, recolectada a nivel regional, desde hace más de 50 años. Al menos 8 de ellos se encontraron en diversos hábitats de orillas fluviales catalogables dentro de las clases fitosociológicas Bidentetea tripartitae e Isoeto- Nanojuncetea. Es destacable que casi la mitad de las especies del total se corresponden con especies alóctonas.All along the line dealing with knowledge of Galician flora, notices about 11 chorologically interesting taxa are presented: Bidens frondosa L., Crypsis alopecuroides (Piller & Mitterp.) Schrad., Cyperus fuscus L., Cyperus michelianus (L.) Link, Dittrichia graveolens (L.) Desf., Echinochloa crus-galli (L.) P. Beauv. subsp. hispidula (Retz.) Honda, Eragrostis curvula (Schrad.) Nees, Hypericum hirsutum L., Lindernia dubia (L.) Pennell, Polygonum x lenticulare Hy and Xanthium echinatum Murray subsp. italicum (Moretti) O. de Bolòs & J. Vigo. It means 4 first records at regional level and 5 first records at provincial level; as an exceptional case, another taxon is presented as the first regional record in the last half century. At least 8 of them were recorded at riverine habitats included in Bidentetea tripartitae and Isoeto-Nanojuncetea phytosociological classes. It is relevant to underline that near half of species number of this collective are alien plants

Notes on the flora of Baixa Limia (Ourense, Galicia, Spain)

Se citan dos especies de plantas vasculares nuevas para Galicia y otra más para la provincia de Ourense.Three species of vascular plants are cited, one new for Galicia and two for the province of Ourense