RT info:eu-repo/semantics/article T1 Distribution and ecology of Didymosphenia geminata (Lyngbye) M. Schmidt (Bacillariophyta) in Trentino watercourses (Northern Italy) A1 Beltrami, María Elena A1 Blanco Lanza, Saúl A1 Ciutti, Francesca A1 Cappelletti, Cristina A1 Monauni, Catia A1 Pozzi, Sabrina A1 Rimet, Frédéric A1 Ector, Luc A2 Ecologia K1 Biología K1 Ecología. Medio ambiente K1 Diatomeas K1 Italia K1 Trento (provincia) K1 Didymosphenia geminata AB In 2000 the European Parliament and The European Union Council recommended that member countries assess water quality using diatoms, as part of the phytobenthos. In Italy this recommendation has given new ímpetus to the study of diatom communities and the application of biotic indices. During the summer of 2004, a total of 11 rivers of the Trentino province (Northern Italy) were sampled, revealing the presence in low abundances of the diatom Didymosphenia geminata {Lyngbye) M. Schmidt. The sites where this diatom occurred were characterised by a low pollution impact; they were also lake fed or had a regulated flow regime, although with different geologies. Morphological features of D. gemina/a frustules were analysed using LM and SEM and specimens could be referred to the morphotype "geminata". In many countries this species is expanding its distribution and in New Zealand it is considered an invasive alga. This work provides an initial report on the presence of D. geminara in the Trento province, and contributes to increasing the knowledge on its distribution in Ilaly and its ecology in the Alps PB The Association des Amis des Cryptogames The Journal YR 2018 FD 2018-01-16 LK http://hdl.handle.net/10612/7092 UL http://hdl.handle.net/10612/7092 NO Cryptogamie Algologie, 2008, 29(2) NO P. 141-160 DS BULERIA. Repositorio Institucional de la Universidad de León RD 25-abr-2024