Estudio micológico del Parque Nacional de Garajonay (La Gomera, Islas Canarias). Agaricales s.l. I

After a recent study of the fungi of the Garajonay National Park, an updated catalogue of Agaricales s.l. for this protected area is presented. Furthermore, 11 rare or poorly known species in the Canary Islands are described and illustrated.Tras un reciente estudio de la biota fúngica del Parque Nacional de Garajonay, damos a conocer el catálogo actualizado de Agaricales s.l. de esta área protegida y se describen e ilustran 11 táxones raros o poco conocidos para las Islas Canarias

Estudio micológico del Parque Nacional de Garajonay (La Gomera, Islas Canarias). Agaricales s.l. I

After a recent study of the fungi of the Garajonay National Park, an updated catalogue of Agaricales s.l. for this protected area is presented. Furthermore, 11 rare or poorly known species in the Canary Islands are described and illustrated.Tras un reciente estudio de la biota fúngica del Parque Nacional de Garajonay, damos a conocer el catálogo actualizado de Agaricales s.l. de esta área protegida y se describen e ilustran 11 táxones raros o poco conocidos para las Islas Canarias

Inter- and intra-island speciation and their morphological and ecological correlates in Aeonium (Crassulaceae), a species-rich Macaronesian radiation

Background and Aims The most species-rich and ecologically diverse plant radiation on the Canary Islands is the Aeonium alliance (Crassulaceae). In island radiations like this, speciation can take place either within islands or following dispersal between islands. Aiming at quantifying intra- and inter-island speciation events in the evolution of Aeonium, and exploring their consequences, we hypothesized that (1) intra-island diversification resulted in stronger ecological divergence of sister lineages, and that (2) taxa on islands with a longer history of habitation by Aeonium show stronger ecological differentiation and produce fewer natural hybrids. Methods We studied the biogeographical and ecological setting of diversification processes in Aeonium with a fully sampled and dated phylogeny inferred using a ddRADseq approach. Ancestral areas and biogeographical events were reconstructed in BioGeoBEARS. Eleven morphological characters and three habitat characteristics were taken into account to quantify the morphological and ecological divergence between sister lineages. A co-occurrence matrix of all Aeonium taxa is presented to assess the spatial separation of taxa on each island. Key Results We found intra- and inter-island diversification events in almost equal numbers. In lineages that diversified within single islands, morphological and ecological divergence was more pronounced than in lineages derived from inter-island diversification, but only the difference in morphological divergence was significant. Those islands with the longest history of habitation by Aeonium had the lowest percentages of co-occurring and hybridizing taxon pairs compared with islands where Aeonium arrived later. Conclusions Our findings illustrate the importance of both inter- and intra-island speciation, the latter of which is potentially sympatric speciation. Speciation on the same island entailed significantly higher levels of morphological divergence compared with inter-island speciation, but ecological divergence was not significantly different. Longer periods of shared island habitation resulted in the evolution of a higher degree of spatial separation and stronger reproductive barriers.info:eu-repo/semantics/publishedVersio

Phlomis x margaritae Silvestre & Aparicio

Taxón de origen híbrido con una sola población conocida en la provincia de Cádiz, que cuenta con unos 35 individuos. Su nula fertilidad y la presión que el ganado vacuno ejerce sobre esta población la amenazan de extinción.Dirección General de Conservación de la Naturaleza. Ministerio de Medio Ambiente de España. Inventario Nacional de Biodiversidad (Inventario Nacional de Hábitats y Taxones

Limonium silvestrei

Especie agamospérmica recientemente descubierta para la ciencia (2005) en la campiña agrícola de la provincia de Sevilla. Actualmente se conocen sólo 6 núcleos poblacionales (de entre 6 y 7.700 individuos), muy amenazados por actividades de tipo antrópico (obras de infraestructura, actividades agrícolas y depósito de basuras) al encontrarse en bordes de caminos y cultivos.Dirección General de Medio Natural y Política Forestal. Ministerio de Medio Ambiente, y Medio Rural y Marino de España. Inventario Nacional de Biodiversida