DOI: 10.3897/pls2023601/02

Authors: Adriano Stinca

Abstract: This paper illustrates the results of a survey aimed at deepening knowledge on vegetation in which Festuca lachenalii and Ophioglossum lusitanicum were recently discovery on Mt. Vesuvius (Italy) after about 200 and 150 years from the last observation, respectively. Both species were previously thought to be locally extinct. These noteworthy microphytes are rare and poorly documented species within their global distribution range. They were found within a habitat of community interest (Habitats Directive 92/43/EEC), where they are subject to extensive anthropogenic impact and require urgent actions for their in situ conservation.

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DOI: 10.3897/pls2022592/07

Authors: Annalisa Santangelo, Gabriele de Filippo, Valeria Rossetti, Sandro Strumia

Abstract: The implementation of the Habitat Directive (Dir. 92/43/EEC) entails gathering a large amount of field data. As for monitoring activities, along with spatial data (GIS data), tabular data regarding habitat, plant and animal species population size, and pressures and threats acting on them are collected. In this paper we describe two relational databases designed to ensure a correct and efficient data storage for the habitats listed in Annex I and the Plant species listed in the Annexes II, IV and V. The two relational Databases were designed in Microsoft Access format. In both databases, “Lookup Tables” related to the taxon were used to avoid replication and to centralize the data. Data Tables were used to store the raw data deriving from monitoring activities. The adopted databases allow the storage of collected data in a standard and homogeneous format and make data entry easier to users, reducing input errors. The databases comply with the mandatory actions of art. 11 and 17 of the Habitat Directive and give a prompt reply to the basic requests of users. Finally, the databases aim to provide citizens and/or other end users with all the data gathered in a single regional repository, with zoological data in addition.

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DOI: 10.3897/pls2022592/01

Authors: Fotios Xystrakis, Minas Chasapis, Eleni Eleftheriadou, Dimitrios Samaras, Konstantinos Theodoropoulos

Abstract: The definition of typical species inventories of the 92/43/EEC Directive habitat types is a valuable information for the optimization of the conservation status assessment. Habitat-specific assessment protocols and predefined local inventories of typical species provide a method for a relatively fast and accurate assessment of the criterion “structures and functions”. Habitat types are often defined and described on the basis of a phytosociological description of vegetation units, mainly at the syntaxonomical level of alliance. Therefore, the definition of typical species inventories can be based on phytosociological approaches. Within this concept we surveyed the vegetation of a NATURA 2000 Special Area of Conservation in northern Greece in order to optimize and downscale the existing region-wide inventories of typical species. In total, we sampled 164 relevés in beech and in thermophilous deciduous broadleaved forests. The relevés were assigned to vegetation units and habitat types using numerical approaches and their differential and constant taxa were defined. We used these taxa to draw up the optimized, site-specific inventories of typical species for seven habitat types of community interest and one habitat type of national interest.

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