Case study:Biomura LIFE06NAT/SI/000066

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Location: 46° 35' 29.14" N, 16° 10' 41.00" E

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Project overview

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Status	Complete
Project web site	http://www.biomura.si/default.aspx
Themes
Country	Slovenia
Main contact forename	Lidija
Main contact surname	Globevnik
Main contact user ID
Contact organisation	Institute for water of the Republic of Slovenia
Contact organisation web site	http://www.izvrs.si/
Partner organisations
Parent multi-site project
This is a parent project encompassing the following projects	No

Conservation of biodiversity of the Mura River in Slovenia (http://www.biomura.si/prenosi/casopis%20Biomura/BioMura_zgibanka1_ang.pdf)

Project summary

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Biomura LIFE06NAT/SI/000066

The BIOMURA project funded by the EU LIFE NATURA 2006 is among the first projects aiming at restoration of the degraded river morphology in Slovenia. Project goals was improvement of riparian and adjacent riverine habitats, protection of targeted endangered species and indirect implications for preservation of other animal and plant species and their habitats, increase of biodiversity and reservation of the natural landscape.

The area covered by the project has a surface of 1520 ha and is part of the Natura 2000 (SPA: SI5000010, pSCI: SI3000215). The area lies within high water protection embankments of the Mura River, between the villages of Bakovci, Dokležovje, Ižakovci, Melinci, Bunčani, Veržej, Krapje and Mota.

Intensive water use, activities in the river and riverside space and the change of land use in the Mura River catchment (chain of hydropower plants on the Mura in Austria, flood protection structures and facilities, water supply, management of agricultural land, urban development) have considerably altered the river space. At the border between Slovenia and Austria, the river bed of the Mura River has deepened in the last decades (by as much as 1.5 m; by 33 cm on average). This has changed the hydrological features of the Mura wetlands.

Although the Mura River has been straightened and the meanders cut-across, leaving behind oxbows, parts of the old channel are still recharged by the river, precipitation and groundwater. The processes of more relaxed, less controlled dynamics of the water flow, with a more frequent and easily spotted bank erosion, natural sediment transport and deposition, frequent flooding, river branches and oxbows, are especially present downstream of Veržej. The Mura river space in Slovenia, and at the reach bordering Croatia, is therefore among the richest ecosystems in Slovenia.

Proposed measures and actions: (C1) connecting the main river channel with the side branches; (C2) establishing conditions for appropriate water level at the site of the water inflow into side branches (more frequent and higher water level in the main channel, which enables the inflow of water into side branches at average and lower discharges); (C3) widening of the main channel where erosion channel banks and gravel bars will be formed; (C4) presentation of sustainable alluvial forest maintenance; (D1) sustainable maintenance (restoration) of side branches; (D2) establishing a system of smaller inflow/ outflow structures and mechanisms (wooden lock lifters, openings) in the chosen sites in the area of oxbow lakes and branches; (E7) local information centre Mota; (E8) regional promotional centre in Murska Sobota; (E9) information trail Veržej – Ižakovci (E1-E6, E10-E12), workshops, promotional and informational actions and sources: webpage, information bulletins, brochure, film.

The activities of the BIOMURA project aimed at improvement of growing conditions for 4 habitats from the Habitats Directive: Alnus glutinosa in Fraxinus excelsior, (Alno-Padion, Alnion incanae, Salicion albae); Quercus robur, Ulmus laevis in Ulmus minor, Fraxinus excelsior ali Fraxinus angustifolia; Rununculion fluitantis in Callitricho-Batrachion; Hydrophilous tall herb fringe communities of plains and of the montane to alpine levels. The conservation of targeted species for more than a third of the Natura 2000 qualification species on the Mura river should be ensured. Targeted species from that Annex II to the Habitats Directive include: 1 butterfly species (Callimorpha quadripunctaria), 1 amphibian species (Bombina bombina), 1 dragonfly species (Ophiogomphus cecilia) and 5 fish species (Misgurnus fossilis, Rhodeus sericeus amarus, Gymnocephalus schraetzer, Umbra krameri, Aspius aspius). Also, it is assumed that the living conditions of 29 other species of birds, butterflies, dragonflies, amphibians, reptiles and mammals improved.

Monitoring surveys and results

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Lessons learnt

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Catchment and subcatchment

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Catchment

River basin district	Big River
River basin	Big River

Subcatchment

River name	Mura River
Area category	1000 - 10000 km²
Area (km2)
Maximum altitude category
Maximum altitude (m)
Dominant geology
Ecoregion	Hungarian Lowlands
Dominant land cover	Woodland, Urban, Extensive agriculture
Waterbody ID

Site

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Name	and Melinci
WFD water body codes
WFD (national) typology	VT Kučnica Mura Petanjci – Gibina
WFD water body name
Pre-project morphology
Reference morphology	Braided
Desired post project morphology
Heavily modified water body
National/international site designation
Local/regional site designations
Protected species present
Invasive species present
Species of interest
Dominant hydrology	Groundwater
Dominant substrate	Silt, Sand, Gravel
River corridor land use	Woodland, Wetland, Urban, Extensive agriculture
Average bankfull channel width category
Average bankfull channel width (m)
Average bankfull channel depth category
Average bankfull channel depth (m)
Mean discharge category
Mean annual discharge (m3/s)
Average channel gradient category
Average channel gradient
Average unit stream power (W/m2)

Project background

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Reach length directly affected (m)	8000 m8 km <br />800,000 cm <br />
Project started	2006/10/01
Works started
Works completed	2011/10/01
Project completed
Total cost category	1000 - 5000 k€
Total cost (k€)	2000 k€2,000,000 € <br />
Benefit to cost ratio
Funding sources	EU (Life Nature programme), Ministry for environment and spatial planning, Institute for water of the Republic of Slovenia, other partners (IZVO, Mura VGP, RRA Mura, Prleska RA, DOPPS, ZrsVN Maribor, WWF)

Cost for project phases

Phase	cost category	cost exact (k€)	Lead organisation	Contact forename	Contact surname
Investigation and design			Institute for water of the Republic of Slovenia
Stakeholder engagement and communication
Works and works supervision
Post-project management and maintenance
Monitoring

Reasons for river restoration

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Mitigation of a pressure
Hydromorphology
Biology
Physico-chemical
Other reasons for the project

Measures

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Structural measures
Bank/bed modifications	natural erosion embankments, connection between river channel and former side branches, expansion of river bed on some parts of the river, new gravel bars
Floodplain / River corridor	Partially filled river sleeves - restored and cleaned of debris, new river oxbows
Planform / Channel pattern
Other
Non-structural measures
Management interventions
Social measures (incl. engagement)
Other

Monitoring

Hydromorphological quality elements

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quality elements

Element	When monitored		Type of monitoring		Control site used	Result
	Before measures	After measures	Qualitative	Quantitative

Biological quality elements

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quality elements

Element	When monitored		Type of monitoring		Control site used	Result
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Physico-chemical quality elements

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quality elements

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Any other monitoring, e.g. social, economic

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Monitoring documents

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Image gallery

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New gravel bars

Additional documents and videos

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Additional links and references

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Link	Description
http://www.biomura.si/prenosi/casopis%20Biomura/BioMura zgibanka1 ang.pdf	project summary
http://www.biomura.si/ang/galerija.aspx	photo gallery

Supplementary Information

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