1,721,009 research outputs found
High mountain vegetation of the Apennines
No full textThis paper outlines the more significant plant communities of the subalpine and alpine belts in the Apennines (shrub formations of the subalpine belt, alpine grasslands, snowbed vegetation, scree and rock fissure vegetation). This overview highlights the coenological autonomy of the Apennine vegetation from the communities of the Alps and central European mountains, as well as the similarities with the high-mountain vegetation of South-Eastern Europe. The paper emphasises the biogeographical value of the Apennines, with its unique biogeographic pattern especially in the central Apennines, the high conservation value in terms of flora, vegetation and habitats, and the key role for monitoring climate change
Bibliografia botanica del Lazio dal 2007 al 2010.
No full textL'analisi del numero totale delle riviste scientifiche consultate risulta essere 5
Specie rare e di interesse conservazionistico di un settore poco conosciuto dell'Appennino centrale (Cittareale, Rieti).
No full text
Gli habitat di interesse comunitario (Direttiva 92/43/CEE) nel Lazio: stato attuale, emergenze e criticità
No full textSubmediterranean dry grasslands along the Tyrrhenian sector of central Italy: Synecology, syndynamics and syntaxonomy
No full textSemi-natural dry grasslands are habitats of high conservation concern. These ecosystems have not been extensively explored in the Tyrrhenian sector of the Italian peninsula, particularly in the Submediterranean climatic region. In order to address this issue and to define the synecology, syndynamics and syntaxonomy of calcareous grasslands in this area, we considered 127 phytosociological relevés. Our sampling was performed in the Lazio region according to a stratified sampling scheme based on homogeneous land units, defined by means of an ecological land classification process. We analyzed the vegetation data using multivariate methods. Two new associations, whose typical aspects occur in the mesotemperate phytoclimatic belt, were identified:Erysimo pseudorhaetici-Dasypyretum villosi (Taenianthero-Aegilopion) and Scorpiuro muricati-Brometum erecti (Phleo-Bromion). Phytoclimatic belts within the Submediterranean region cause a significant degree of differentiation within Scorpiuro-Brometum, which was described at the subassociation and variant levels. The overall relevance of therophytes represents the most important feature distinguishing Scorpiuro-Brometum from the published Bromus erectus associations. At a finer scale, the presence of the two physiognomically different grassland communities is related to different soil types. All these communities are dynamically linked to Quercus virgiliana and Q. pubescens woods, and contribute to the coenological differentiation of the vegetation series related to such woodlands. © 2012 Copyright Taylor and Francis Group, LLC
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