Diffusion of Percnon Gibbesi (H. Milne Edwards, 1853) (Crustacea, Decapoda, Grapsidae) along the south Salento, Italy

ITScopo di questo lavoro è quello di aggiornare i dati sulla distribuzione nelle acque costiere del Salento jonico del granchio corridore atlantico Percnon gibbesi specie aliena e invasiva, sub-tropicale. Le indagini hanno potuto verificare la presenza di popolazioni stabili più o meno consistenti nell’area indagata.ENThis study is based on personal surveys carried out in the period between July and September 2014 in some locations along the Ionian coast of the Salento Peninsula (Apulia, South Italy) to verify the presence and distribution of invasive species sally light-foot crab Percnon gibbesi of subtropical origin. Adults of both sexes have been observed on rocky shorelines, constituting stable populations more or less consistent. The present data confirm the presence, but also update the geographic distribution of this NIS proving its fast adaptation and diffusion from its first report in 2005, along the Ionian coast of the Salento

Centaurea pumilio l. (asteraceae), una nuova specie per la flora italiana

EnThe authors point out the first finding in Southern Apulia (Torre S. Giovanni, Ugento) of Centaurea pumilio L., a species up to now known for the eastern districts of the Mediterranean region. Details on floral morfology and population viability are given.ItGli autori descrivono il primo ritrovamento in Italia, nella Puglia meridionale (Torre S. Giovanni, Ugento) di Centaurea pumilio L., specie tipica della regione orientale mediterranea. Vengono descritti anche i campioni esaminati e la consistenza della popolazione rilevata

Nuove segnalazioni floristiche italiane 12. Flora vascolare (101–112)

Nuove segnalazioni floristiche italian

Shedding light on typical species: Implications for habitat monitoring

Habitat monitoring in Europe is regulated by Article 17 of the Habitats Directive, which suggests the use of typical species to assess habitat conservation status. Yet, the Directive uses the term “typical” species but does not provide a definition, either for its use in reporting or for its use in impact assessments. To address the issue, an online workshop was organized by the Italian Society for Vegetation Science (SISV) to shed light on the diversity of perspectives regarding the different concepts of typical species, and to discuss the possible im-plications for habitat monitoring. To this aim, we inquired 73 people with a very different degree of expertise in the field of vegetation science by means of a tailored survey composed of six questions. We analysed the data using Pearson's Chi-squared test to verify that the answers diverged from a random distribution and checked the effect of the degree of experience of the surveyees on the results. We found that most of the surveyees agreed on the use of the phytosociological method for habitat monitoring and of the diagnostic and characteristic species to evaluate the structural and functional conservation status of habitats. With this contribution, we shed light on the meaning of “typical” species in the context of habitat monitoring

Prima segnalazione per l’Italia del martin pescatore bianco e nero (Ceryle Rudis, L. 1758, Alcedinidae)

ItSi segnala il primo avvistamento per l’Italia del martin pescatore bianco nero (Ceryle rudis L., Alcedinidae), specie stanziale, con areale di distribuzione che si estende dall’Africa sub sahriana al S/E asiatico. L’esemplare femmina è stato individuato per la prima volta il giorno 5 novembre 2014, presso i bacini idrografici del Parco Naturale Regionale “Litorale di Ugento” (LE), durante l’osservazione dell’avifauna. L’esemplare ha svernato nel vasto biotopo acquatico con regolarità fino al 10 gennaio 2015, successivamente è stato osservato saltuariamente, fino al 12 aprile. La sua presenza nel Salento potrebbe essere dovuta o ad una serie di cambiamenti climatici, oppure molto più probabilmente potrebbe trattarsi di un caso di dispersione dell’esemplare fuori dal suo areale di distribuzione.The author presents the first report for Italy of the pied kingfisher (Ceryle rudis L., Alcedinidae) on November 5, 2014, in the wet area of the Regional Natural Park “Litorale di Ugento”, Lecce, Apulia, Italy. The species was not reported in the list of the birds of the Apulian region (Liuzzi et al., 2013) and check list of the italian national avifauna (Fracasso G. et al., 2009). This first sighting was reported among the rarities of Italy in the mailing list of EBN Italy. The female specimen has wintered for over two months. The observation made it possible to study a number of behaviors, roots, selection of time shooting, etc. The diet generally consists of mullet (Mugil cephalus), also of medium size, which are identified from a high perch, or scouring from high the water, remaining steady in flight.From 10 January 2015 the specimen has not been observed in his regular routine site. The specimen was subsequently sighted occasionally until April 12. The pied kingfisher is classified as Least Concern (LC) on the IUCN Red List. Its presence in Salento may be due either to climate change, or a case of dispersion of the specimen outside its natural range