NEGATIVNI RECENTNI ANTROPOGENI PROCESI U NEPOSREDNOM SLIVU PROKOŠKOG JEZERA RECENT
NEGATIVE ANTHROPOLOGICAL PROCESSES IN IMMEDIATE BASIN OF THE PROKOŠKO LAKE
Muriz Spahić
DOI: 10.35666/23038950.1991.35.125
UDK: 911.2:55.48/.18(497.15)
SUMMARY: RECENT NEGATIVE ANTHROPOLOGICAL PROCESSES IN IMMEDIATE BASIN OF THE PROKOŠKO LAKE. Mountain morpho-structures of the Dinaric system, with their high mountain lakes know as "tarns" in geographic literature, include the Vranica. Within the mountain morpho-structure of the Vranica, at the altitude of 1.485 m, one finds the Prokoško lake of 48.330 m2 are and 13,0 m maximum depth. This mountain-water locality is undergoing the final evolution stage - that of the sapropoelization. The transformation of the lake into a pool-like geo-locality is greatly influenced by the processes of washing away, defluxion and cryofluxion. These processes made a Significant impact on the creation of a pre-lake accumulative (prolluvio-delluvial and defluxtive) plane in the southwest part of the lake valley. It is a rather levelled pre-lake surface, presently much sectioned by permanent and periodic, torrent-nature, affluents of the lake. The bathymetry of the lake bottom and its sampling performed in 1981. showed it to be extremely silty and the structure of the deposits clearly reveals their origin from the southwest aft1uent zone. The fluviatile and drfluxion processes greatly influence the state of the elevation of the lake bottom which in turn decreases its depth. On the other hand, the fluiatile erosion going on longitudinally in the lake etfluent represents another unfavourable natural geographic process. The regressive erosion adds to the permanen t deepening of the lake effluent which receives
GEOGRAPHICAL REVIEW - SCIENTIFIC JOURNAL FOR GEOGRAPHY No 35, Year 1991. pg. 125-132