Case study:The Cernovca Restoration Project

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Location: 45° 24' 9.60" N, 29° 29' 42.07" E

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Project overview

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Status	Complete
Project web site
Themes	Habitat and biodiversity
Country	Romania
Main contact forename	Marian
Main contact surname	Tudor
Main contact user ID
Contact organisation	The Danube Delta National Institute for Research and Development, Tulcea
Contact organisation web site	http://www.ddni.ro
Partner organisations	The Danube Delta Biosphere Reserve Authority
Parent multi-site project
This is a parent project encompassing the following projects	No

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Project summary

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Until the 20th century vast areas of the Danube Delta faced only minimal human impacts through extensive fishery and reed harvesting. Since then the Danube Delta has undergone multiple human impacts like embankment, channelization and drainage. Moreover, large areas were diked and the polders used for agriculture. The Cernovca polder (1.580ha) was reconnected to the Danube in 1996, and recovery has been monitored by the Danube Delta National Institute for Research and Development Tulcea. Within a few years a redevelopment of the site-specific biodiversity occurred and ecosystem services like nutrient retention and fish recruitment became obvious. Additionally, the reconnected polder enable reed harvesting, grazing, fishing and ecotourism.

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Image gallery

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Satellite image of Cernovca area (1993)

Satellite image of Cernovca area (1996)

Catchment and subcatchment Select a catchment/subcatchment Edit the catchment and subcatchment details (affects all case studies in this subcatchment) Catchment River basin district Danube River basin Danube Delta Subcatchment River name Chilia Branch Area category Less than 10 km² Area (km2) 2.102.1 km² <br />210 ha <br /> Maximum altitude category Less than 100 m Maximum altitude (m) 2.42.4 m <br />0.0024 km <br />240 cm <br /> Dominant geology Organic (i.e. Peat) Ecoregion Pontic Province Dominant land cover Grassland, Reed Waterbody ID Other case studies in this subcatchment: The Babina Restoration Project Site Edit site Name Agricultural polder Cernovca WFD water body codes RORW14.1_B6 WFD (national) typology RO15 WFD water body name Pre-project morphology Embanked, Agricultural land Reference morphology Sinuous, Artificial channel Desired post project morphology Heavily modified water body No National/international site designation International - RAMSAR site Local/regional site designations Biosphere Reserves Protected species present No Invasive species present No Species of interest Dominant hydrology Artificially regulated, Wetland Dominant substrate Sand, Clay River corridor land use Grassland, Wetland Average bankfull channel width category 10 - 50 m Average bankfull channel width (m) Average bankfull channel depth category 0.5 - 2 m Average bankfull channel depth (m) 1.501.5 m <br />0.0015 km <br />150 cm <br /> Mean discharge category more than 1000 m³/s Mean annual discharge (m3/s) 36063,606 m³/s <br />3,606,000 l/s <br /> Average channel gradient category Average channel gradient 0.015 Average unit stream power (W/m2) Project background Edit project background Reach length directly affected (m) Project started 1991/01/01 Works started 1996/01/01 Works completed 1996/01/01 Project completed Total cost category 1 - 10 k€ Total cost (k€) 56545,654 k€ <br />5,654,000 € <br /> Benefit to cost ratio Funding sources GEF biodiversity preservation project in the Danube Delta Cost for project phases Phase cost category cost exact (k€) Lead organisation Contact forename Contact surname Investigation and design Stakeholder engagement and communication The Danube Delta Biosphere Reserve Authority, Tulcea Works and works supervision Post-project management and maintenance The Danube Delta National Institute for Research and Development, Tulcea (office@indd.tim.ro) Marian Tudor Monitoring The Danube Delta National Institute for Research and Development, Tulcea (office@indd.tim.ro) Marian Tudor Supplementary funding information Funding sources for post-project management and maintenance came from national budget. Reasons for river restoration Edit reasons for restoration Mitigation of a pressure Flood risk management Hydromorphology Continuity for organisms Biology Fish: Species composition Physico-chemical Nutrient concentrations Other reasons for the project Landscape enhancement, Recreation Measures Edit Measures Structural measures Bank/bed modifications Create breaches in the bank Floodplain / River corridor Creation of wetlands Planform / Channel pattern Reconnecting Cernovca polder tothe Danube flooded regime Other Non-structural measures Management interventions Social measures (incl. engagement) Other Monitoring Hydromorphological quality elements Edit Hydromorphological quality elements Element When monitored Type of monitoring Control site used Result Before measures After measures Qualitative Quantitative Quantity & dynamics of flow Improvement Biological quality elements Edit biological quality elements Element When monitored Type of monitoring Control site used Result Before measures After measures Qualitative Quantitative Fish: Species composition No Yes No No No Improvement Invertebrates No No Yes No No Macrophytes No No No Yes No Phytoplankton No No No No No Physico-chemical quality elements Edit Physico-chemical quality elements Element When monitored Type of monitoring Control site used Result Before measures After measures Qualitative Quantitative Nutrient concentrations Yes No No No No Improvement Salinity No Yes No No No PH No No No No No Oxygen balance No No No No No Temperature No No No No No Any other monitoring, e.g. social, economic Edit Other responses Element When monitored Type of monitoring Control site used Result Before measures After measures Qualitative Quantitative Important biogeochemical role for nutrient retention andcycling. Yes No No No No Improvement Fish No Yes No No No Pastures No No No No No Reed No No No No No Medicinal plants No No No No No Monitoring documents Upload monitoring documents Development of zoobenthos in the restored polder Cernovca Additional documents and videos Upload additional documents Additional links and references Edit links and references Link Description http://www.ddni.ro The website of The Danube Delta National Institute for Research and Development, Tulcea, Romania Supplementary Information Edit Supplementary Information