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Santa Caterina dello Ionio, Italy

Landini W.,University of Pisa | Chiappini L.,University of Pisa | Finotti F.,Museo Civico di Rovereto | Sorbini C.,University of Pisa
Atti della Societa Toscana di Scienze Naturali, Memorie Serie B | Year: 2011

A new titanosaur fossil assemblage has been discovered by researchers of the Italian museum network Pangea in collaboration with the Museo Patagonico de Ciencia Naturales of General Roca (Rio Negro, Argentina). This fossiliferous deposit is included in the continental sediments of the Anacleto Formation (late Santonian-early Campanian), outcropping in the northern sector of the of El Cuy valley. Preliminary studies on the 3D digital models of five significant fossil remains allowed us to preliminarily attribute them to the genus Laplatasaurus Huene (1929). Taphonomic, sedimentological and paleontological analyses indicate a fluvial-lacustrine depositional environment. The well preserved bones, their concentration at the base of the fossiliferous layer, the presence of sub-adult and adult individuals allow us to hypothesize a gregarious behavior. The cause of death can be attributed to a sudden flooding of the basin that buried a whole herd of titanosaurs. During the paleontological digging fields (2008-2010) new not invasive methods of geophysical survey (geoelectric and passive seismic techniques) have been tested to find fossil vertebrate remains within sedimentary bodies without any direct contact with the specimens (remote sensing). The results of these applications have been of some interest and, if integrated with paleontological excavation activities, can become strategic to the selection of fossiliferous areas. © 2011, Societa Toscana di Scienze Naturali. All rights reserved. Source


Gentili R.,University of Milan Bicocca | Gilardelli F.,University of Milan Bicocca | Bona E.,Centro Studi Naturalistici Bresciani | Prosser F.,Museo Civico di Rovereto | And 33 more authors.
Plant Biosystems | Year: 2016

The spread of the invasive and allergenic Ambrosia artemisiifolia L. in Italy was analysed and mapped using distribution data from a wide range of sources. Ambrosia artemisiifolia occupies 1057 floristic quadrants which are mostly distributed in the Po plain. The distribution obtained represents the basis to implement urgent management strategies. © 2016 Società Botanica Italiana Source


Rossi G.,University of Pavia | Montagnani C.,University of Genoa | Abeli T.,University of Pavia | Gargano D.,University of Calabria | And 46 more authors.
Plant Biosystems | Year: 2014

"The New Red List of the Italian Flora" includes all the Italian policy species and other species of known conservation concerns for a total of 400 taxa, 65% of which are threatened with extinction. The Red List is based on a huge georeferenced data-set useful for conservation purposes. © 2013 © 2013 Società Botanica Italiana. Source


Gilardelli F.,University of Milan Bicocca | Gentili R.,University of Milan Bicocca | Prosser F.,Museo Civico di Rovereto | Bonomi C.,Museo Tridentino di Science Naturali | And 2 more authors.
Nordic Journal of Botany | Year: 2013

Dry grasslands are of great interest for nature conservation in Europe, because they have a central role in the conservation of numerous rare and endangered species. In this study carried out in the Brenta mountain group (Italian alps), we investigated the effect of environmental factors mainly controlled by topography, on the biodiversity trends across different dry grassland habitats where the threatened alpine stenoendemic Erysimum aurantiacum grows. Plant community data and ecological factors were analysed by means of a multi-habitat CCA approach and by analysis of biodiversity gradients in 7 natural and semi-natural habitats. We found that species turnover and biodiversity patterns vary as a function of multi-factorial ecological gradients. For the single habitats, elevation gradient was the main factor explaining compositional variation, followed by inclination and proportion of exposed rock surface. Despite its endangered status, E. aurantiacum showed a relatively high degree of ecological plasticity across these semiarid grassland habitats that probably allows it to survive in different environments, including in some cases those impacted by human activities. This prompts for habitat- more than species-level conservation actions. According to their characteristics and threats, habitat-specific management practices are recommended for long term conservation of plant species communities in the different ecological niches. © 2013 The Authors. Nordic Journal of Botany © 2013 Nordic Society Oikos. Source


Lega M.,Research and Innovation Center | Fior S.,Research and Innovation Center | Prosser F.,Museo Civico di Rovereto | Bertolli A.,Museo Civico di Rovereto | And 2 more authors.
Biological Journal of the Linnean Society | Year: 2012

Species delimitation is an important issue in terms of conservation priorities, especially for narrow endemics under threat of extinction. The Alpine endemics Brassica repanda subsp. glabrescens and subsp. baldensis belong to a highly polymorphic species complex, although their disjunct distribution suggests favourable conditions for independent evolution. In the present study, we applied the unified species concept to test whether the endemics form distinct evolutionary lineages, both from one another and also from the remainder of the complex. Compliance with the criteria of monophyly, diagnosability, and genotypic clustering was examined, primarily by making use of amplified fragment length polymorphism data. Both endemics were indicated as monophyletic by phylogenetic analyses, and diagnostic characters were found for both taxa. Population structure analyses showed clear genetic discontinuity for each of the endemics, with little admixture among the clusters. This evidence indicates that the endemics have acquired multiple properties that satisfy each of the species criteria considered. Hence, we suggest the taxonomic recognition of B. baldensis and B. glabrescens as separate species. Comparative population genetics analyses show the lack of marked genetic structuring within either taxon, as well as low levels of heterozygosity. Conclusions on the status of threat and on recommended conservation actions are drawn. © 2012 The Linnean Society of London, Biological Journal of the Linnean Society. Source

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