1,721,013 research outputs found
Spontaneous renaturalization processes of the vegetation in the abandoned fields (Central Italy).
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Disentangling the concept of Junco capitati-Isoëtetum histricis Br.-Bl. 1936
No full textThe association Junco capitati-Isoëtetum histricis Braun-Blanquet 1936 was described in North-Western Tunisia. During the almost one hundred years after the its typification, the name of this association was applied to plant communities of several different localities in Europe (Portugal, Spain, Italy and Crete Island) and North-Africa. The aim of this research was to verify whether the application of this name have drifted the original idea. We collected 110 phytosociological relevès and processed them basing on semi-supervised fuzzy classification and indirect gradient (chorological) analysis. A clear floristic and chorological pattern, with East-Western variations, emerged from the analysis. We disentangled the concept of Junco capitati-Isoëtetum histricis identifying among the communities referred to this name three new associations, Junco sorrentinii-Isoëtetum histricis, Sileno laetae-Isoëtetum histricis, Isoëtetum siculae-histricis, and different subassociations
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Ecology and floristic-vegetational characterization of the Pinus nigra subsp. nigra old reforestation areas in the central Apennines
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Il Geodatabase del Sistema Informativo Vegetazionale delle Marche
Full text linkThe Vegetational Information System Geodatabase of Marche region, planned and implemented during the project of the Ecological Network of Marche region (R.E.M.) with the goal to keep track geographically and over time of all the information about the plant landscape of Marche derived from phytosociological and geosynphytosociological analysis, is showed. The Vegetation Information System, planned according to standardized and tested methods, is an important monitoring tool to support biodiversity management and research
La vegetazione e il paesaggio degli ambienti "seminaturali" del Centro Italo-Tedesco di Villa Vigoni.
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