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Monitoring of growth and succession in the areas of renaturation of the Stržen stream`s meanders

As part of the LIFE Stržen project, the Notranjska Regional Park undertook the reactivation of the former bends of Stržen, the largest sinkhole in the Cerknica field. This will extend this watercourse and thus provide the wild inhabitants of the lake, plants, fish, birds and other aquatic and riparian organisms with more space to live and raise their offspring.

Stržen po stotih letih ponovno teče po strugi, ki so jo ljudje skrajšali, da bi voda hitreje odtekla. Načrti za osušitev jezera do mere, ki bi omogočala poljedelstvo, s čimer bi odpravili lakoto, se niso izšli … območje presihajočega Cerkniškega jezera je ostalo premokro za kulturne rastline, na dinamiko presihanja jezera prilagojeni divji prebivalci tega edinstvenega območja pa so se soočili s težjimi pogoji za življenje.

After a hundred years, the core flows again along the riverbed, which was shortened by people to make the water drain faster. Plans to drain the lake to the extent that it would allow farming to eliminate hunger did not work out… the area of the intermittent Cerknica Lake remained too wet for cultivated plants, and the wild inhabitants of this unique area, adapted to the dynamics of the lake’s interruption, faced more difficult conditions for life.

Activation of the former Stržen bends required the use of heavy construction machinery, which also resulted in some mechanical damage to the soil and thus changes in the vegetation cover in some parts of the area (e.g. areas of excavated material transport and temporary excavated material landfill).

Brez težke gradbene mehanizacije bi bila obnova nekdanjih okljukov Stržena praktično nemogoča. Poškodovano rastje si bo opomoglo … koliko časa narava za obnovo potrebuje in kako sukcesija poteka, pa bomo spremljali s spremljanjem stanja popisnih ploskev.

Without heavy construction machinery, the restoration of the former Stržen bends would be practically impossible. Damaged vegetation will recover… how much nature needs to restore and how the succession takes place will be monitored by monitoring the condition of the census plots.

For the purposes of monitoring the succession of unoccupied space and the development of the plants in different habitats, we will conduct phytocenological inventories (inventories of plant communities), and we will also measure various environmental factors that will help us understand the patterns of diversity and distribution of organisms and communities in space.

Popisne ploskve za spremljanje sukcesije rastja in učinkov obnove okljukov na območju renaturacije Stržena vključujejo zemljišča z različnimi stopnjami poškodovanosti. Fotografija prikazuje določanje popisnega kvadranta v visokem šašju, enem od tipov naravnega rastja obravnavnega območja.

For the purposes of monitoring the succession or. colonization of unoccupied space and development or In order to determine the actual state of vegetation in different habitats, we will conduct phytocenological inventories (inventories of plant communities), and we will also measure various environmental factors that help to understand the patterns of diversity and distribution of organisms and communities in space.

 

Photos by Jošt Stergaršek

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