73 research outputs found
Threatened and extinct amphibians and reptiles in Italian natural history collections are useful conservation tools
Natural history museums are irreplaceable tools to study and preserve the biological diversity around the globe and among the primary actors in the recognition of species and the logical repositories for their type specimens. In this paper we surveyed the consistency of the preserved specimens of amphibians and reptiles housed in the major Italian scientific collections, and verified the presence of threatened species according to the IUCN Red List, includ-ing the Extinct (EX), Extinct in the Wild (EW), Critically Endangered (CR), Endangered (EN), and Vulnerable (VU) categories. Altogether, we analyzed 39 Italian zoological collections. We confirmed the presence of one extinct reptile (Chioninia coctei) and five extinct or extinct in the wild amphibian species (Atelopus longirostris, Nectophrynoides asperginis, Pseudophilautus leucorhinus, P. nasutus, and P. variabilis). Seven CR amphibians, fourteen CR reptile species and the extinct skink C. coctei are shared by more than one institution. Museums which host the highest number of threatened and extinct amphibian species are respectively Turin (17 CR and 1 EX), Florence (13 CR and 1 EX), and Trento (15 CR and 1 EW), while for reptiles the richest museums are those from Genoa (15 CR and 1 EX), Florence (11 CR and 1 EX), and Pisa (7 CR). Finally, we discussed the utility of natural history museums and the strategies to follow for the implementation of their functionality. © Firenze University Press
Analisi di miscele complesse di amminoacidi mediante cromatografia a scambio ionico con tampone al litio.
Amminoacidi in alghe marine. Derminazione degli amminoacidi liberi e combinati in alcune Chlorophyceae, Rhodophyceae e Pheophyceae.
Valutazione della qualit\ue0 della frazione proteica di alcune alghe dell'alto Adriatico.
Considerazioni di carattere merceologico sull'uso di composti ossigenati come combustibili nel settore della autotrazione.
Risoluzione mediante cromatografia a scambio ionico della cisteina in presenza di altri amminoacidi.
Aminoacidi in alghe marine. Determinazione deli aminoacidi liberi e combinati del Fucus virsoides.
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