B. Papp szerk.: Studia Botanica Hungarica 37. 2006 (Budapest, 2006)

Papp, Beáta, Erzberger, Peter; Saboljevic, M.: Contribution to the bryophyte flora of the Djerdap National Park (E Serbia)

Djcrdap gorge was established as a National Park in 1974. The area is mostly covered by forest (ca 64%). The park covers terrestrial and riverside parts, and consists of three canyon-gorge valleys (Golubacka, Gospodjin Vir and Mali i Veliki Kazan) and three basins (Ljupkovska, Donjomilanovacka and Orsavska). The canyons cut through the limestone rocks of the South-Carpathians. Due to specific conditions of climate, relief and soils, and the hydrology of the Danube canyon in particular, the ecosystems of the park show réfugiai characteristics with a high percentage of relict species and communities, one of the most precious peculiarities of this region (STEVANOVIC and VASIC 1995). The vascular flora comprises over 1100 species within the park borders, with an unusually rich relict tree flora. Of ca 50 forest communities within the park, some 35 have relict characteristics, some of which represent relict and endemic polydominant forest types (e.g. Fago-Colurnetum mixturn, Querco-Colurnetum mixtum, Fraxino-Colurnetum mixtum, Syringo-Colurnetum mixtum, Celto-Juglandetum) (STEVANOVIC and VASIC 1995). Endemics are mostly present among non-tree species; one of the famous endemics of Djerdap gorge is Tulipa hungarica. Up to date no bryophyte survey has been made for the region of the Djerdap National Park, although some older bryophyte records can be found (PAVLETIC 1955); a recent contribution of the third author will be published separately (SABOVLJEVIC in press). Methods The collecting trip was made in July 2004 by the first two authors. Main habitat types such as stream valleys, forests, and grasslands developed on various bedrocks were visited, and bryophytes were collected from different substrates (soil, calcareous and non-calcareous, exposed and shady rocks, tree bark and decaying wood). The specimens are preserved in the Herbarium of the Hungarian Natural History Museum, Budapest (BP) and in the Herbarium of the Botanical Museum Berlin-Dahlem (B). Nomenclature of the species follows ERZBERGER and PAPP (2004) and KOPERSKI et al. (2000). New floristical results for the country are analysed according to the checklists of Serbia-Montenegro (SABOVLJEVIC 2000ö, SABOVLJEVIC and STEVANOVIC 1999) updated by the new records (see quotations in the introduction). Site details 1. Serbia, Djerdap National Park, Boljetin, Boljctinska reka stream, 120 m a. s. I., N 44°32' 24.2", E22°01 '47.1", 10.07.2004. 2. Serbia, Djcrdap National Park, Pesaca stream at Sokolovac hill, 360 m a. s. 1., N 44°35' 04.5", E21°59'21.7", 10.07.2004. 3. Serbia, Djerdap National Park, Danube bank at Pesaca stream, 110 m a. s. I., N 44°36'02.8", E21°00'29.5", 10.07.2004. 4. Serbia, Djerdap National Park, from Ploce to Veliki Strbac hill, 745 m a. s. 1., N 44°35'42.0", E22°16'57.5", 11.07.2004. 5. Serbia, Djerdap National Park, north of Ploce towards Mali Strbac hill, dolinas, 390 m a. s. 1., N 44°37'01

.2", E 22°17'26.5", 12.07.2004. 6. Serbia, Djerdap National Park, Mali Strbac hill, 630 m a. s. 1., N 44°37'54.5", E 22° 18'35.6", 12.07.2004. 7. Serbia, Djerdap National Park, Golubac castle at the Danube bank, 90 m a. s. 1., N 44°39' 37.1", E21°40'36.6", 13.07.2004.