1. THE KARSTIC LAKE IEZERUL IGHIEL (TRANSYLVANIA, ROMANIA): ITS FIRST LIMNOLOGICAL STUDY. Authors: MIRELA CÎMPEAN, KARINA PAULA BATTES, CARMEN SEGEDI, ORSOLYA TÜNDE LÁSZLÓ, ANCA MIHAELA CIORCA, LAURA MOMEU.2. SAME KARSTIC SUBSTRATUM, DIFFERENT AQUATIC COMMUNITIES? CASE STUDY: THREE WATER BODIES FROM WESTERN ROMANIA. Authors: KARINA PAULA BATTES, LAURA MOMEU, ANCA MIHAELA CIORCA.3. DRINKING WATER QUALITY ASSESSMENT IN THE DANUBE DELTA BIOSPHERE RESERVE. Authors: ZSOLT TÖRÖK, CRISTIAN COMAN, EDINA SZEKERES, ANCA MIHAELA CIORCA, LILIANA TÖRÖK.