Case study:The Cernovca Restoration Project: Difference between revisions

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{{Case_study_status
{{Case study status
|Approval status=Draft
|Approval status=Approved
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{{Location
{{Location
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|Contact organisation=The Danube Delta National Institute for Research and Development, Tulcea
|Contact organisation=The Danube Delta National Institute for Research and Development, Tulcea
|Contact organisation url=www.ddni.ro
|Contact organisation url=www.ddni.ro
|Partner organisations=The Danube Delta Biosphere Reserve Authority
|Multi-site=No
|Multi-site=No
|Project summary=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.
|Project summary=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.
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Additionally, the reconnected polder enable reed harvesting, grazing, fishing and ecotourism.
Additionally, the reconnected polder enable reed harvesting, grazing, fishing and ecotourism.
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{{Case study image
|File name=Satellite image of  Cernovca area 1993.jpg
|Caption=Satellite image of Cernovca area (1993)
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{{Case study image
|File name=Satellite image of  Cernovca area 1996.jpg
|Caption=Satellite image of Cernovca area (1996)
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{{Case_study_subcatchment
{{Case_study_subcatchment
|Subcatchment=
|Subcatchment=
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{{Site
{{Site
|Name=
|Name=Agricultural polder Cernovca
   
|WFD water body code=RORW14.1_B6
   
|WFD (national) typology=RO15
      Agricultural polder Cernovca
|Pre-project morphology=Embanked, Agricultural land
|WFD water body code=
|Reference morphology=Sinuous, Artificial channel
      RORW14.1_B6
|Heavily modified water body=No
|WFD (national) typology=
|Site designation=International - RAMSAR site
      RO15
|Local site designation=Biosphere Reserves
|WFD water body name=
|Protected species present=No
     
|Invasive species present=No
|Pre-project morphology=
|Dominant hydrology=Artificially regulated, Wetland
      Embanked
|Dominant substrate=Sand, Clay
|Reference morphology=
|River corridor land use=Grassland, Wetland
      Sinuous
|Average bankfull channel width category=10 - 50 m
|Heavily modified water body=
|Average bankfull channel depth category=0.5 - 2 m
     
|Avrg1 bankfull channel depth=1.50
|Local site designation=
|Mean discharge category=more than 1000 m³/s
      RAMSAR site
|Mn discharge=3606
|Site designation=
|Avrg channel gradient=0.015
     
|Protected species present=
     
|Invasive species present=
     
|Species=
     
|Dominant hydrology=
      Artificially regulated
|Dominant substrate=
      Sand
|River corridor land use=
      Grassland
|Average bankfull channel width category=
      more than 50 m
|Avrg bankfull channel width=
      350
|Average bankfull channel depth category=
     
|Avrg1 bankfull channel depth=
     
|Mean discharge category=
     
|Mn discharge=
     
|Average channel gradient category=
     
|Avrg channel gradient=
      0.015
}}
}}
{{Project_background
{{Project background
|Reach length directly affected=
|Project started=1991/01/01
   
|Works started=1996/01/01
   
|Works completed=1996/01/01
     
|Total cost category=1 - 10 k€
|Project started=
|Total1 cost=5654
      1991/01/01
|Funding sources=GEF biodiversity preservation project in the Danube Delta
|Works started=
|Stakeholder engagement Lead organisation=The Danube Delta Biosphere Reserve Authority, Tulcea
      1996/01/01
|Post-project management and maintenance Lead organisation=The Danube Delta National Institute for Research and Development, Tulcea (office@indd.tim.ro)
|Works completed=
|Post-project management and maintenance Other contact forename=Marian
      1996/01/01
|Post-project management and maintenance Other contact surname=Tudor
|Project completed=
|Monitoring Lead organisation=The Danube Delta National Institute for Research and Development, Tulcea (office@indd.tim.ro)
     
|Monitoring Other contact forename=Marian
|Total cost category=
|Monitoring Other contact surname=Tudor
      50 - 100 k€
|Supplementary funding information=Funding sources for post-project management and maintenance came from national budget.
|Total1 cost=
     
|Funding sources=
     
|Investigation and design cost category=
     
|Invst and design cost=
     
|Investigation and design Lead organisation=
     
|Investigation and design Other contact forename=
     
|Investigation and design Other contact surname=
     
|Stakeholder1 engagement cost category=
     
|stk engagement cost=
     
|Stakeholder engagement Lead organisation=
      The Danube Delta Biosphere Reserve Authority, Tulcea
|Stakeholder engagement Other contact forename=
     
|Stakeholder engagement Other contact surname=
     
|Works1 and supervision cost category=
     
|Wrk and supervision cost=
     
|Works and supervision Lead organisation=
     
|Works and supervision Other contact forename=
     
|Works and supervision Other contact surname=
     
|Post-project1 management and maintenance cost category=
     
|Post-project2 management and maintenance cost=
     
|Post-project management and maintenance Lead organisation=
      The Danube Delta National Institute for Research and Development, Tulcea (office@indd.tim.ro)
|Post-project management and maintenance Other contact forename=
      Marian
|Post-project management and maintenance Other contact surname=
      Tudor
|Monitoring1 cost category=
     
|Monitoring2 cost=
     
|Monitoring Lead organisation=
      The Danube Delta National Institute for Research and Development, Tulcea (office@indd.tim.ro)
|Monitoring Other contact forename=
      Marian
|Monitoring Other contact surname=
      Tudor
|Supplementary funding information=
     
}}
}}
{{Motivations
{{Motivations
|Hydromorphological quality elements=
|Specific mitigation=Flood risk management
   
|Hydromorphological quality elements=Continuity for organisms
   
|Biological quality elements=Fish: Species composition
      Continuity for organisms
|Physico-chemical quality elements=Nutrient concentrations
|Biological quality elements=
|Other motivation=Landscape enhancement,Recreation
      Fish: Species composition
|Physico-chemical quality elements=
      Nutrient concentrations
|Specific mitigation=
      Flood risk management
|Other motivation=
      Landscape enhancement,Recreation
}}
}}
{{Measures
{{Measures
|Bank and bed modifications measure=
|Bank and bed modifications measure=Create breaches in the bank
   
|Floodplain / River corridor=Creation of wetland
   
|Planform / Channel pattern=Reconnecting polder
     
|Floodplain / River corridor=
      Creation of wetlands
|Planform / Channel pattern=
      Reconnecting Cernovca polder to
the Danube flooded regime
|Other technical measure=
     
|Management interventions=
     
|Social measures=
     
|Wider stakeholder / citizen engagement=
     
}}
}}
{{Hydromorphological_quality_elements_header}}
{{Hydromorphological_quality_elements_header}}
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}}
}}
{{End_table}}
{{End_table}}
{{Biological_quality_elements_header}}
{{Biological quality elements header}}
{{Biological_quality_element_table_row
{{Biological quality element table row
|Element=
|Element=Fish: Species composition
   
|Monitored before=No
   
|Monitored after=Yes
   
|Qualitative monitoring=No
   
|Quantitative monitoring=No
      Fish: Species composition
|Control site used=No
|Monitored before=
|Result=Improvement
     
}}
|Monitored after=
{{Biological quality element table row
     
|Element=Invertebrates
|Qualitative monitoring=
|Monitored before=No
     
|Monitored after=No
|Quantitative monitoring=
|Qualitative monitoring=Yes
     
|Quantitative monitoring=No
|Control site used=
|Control site used=No
     
}}
|Result=
{{Biological quality element table row
      Improvement
|Element=Macrophytes
|Monitored before=No
|Monitored after=No
|Qualitative monitoring=No
|Quantitative monitoring=Yes
|Control site used=No
}}
{{Biological quality element table row
|Element=Phytoplankton
|Monitored before=No
|Monitored after=No
|Qualitative monitoring=No
|Quantitative monitoring=No
|Control site used=No
}}
}}
{{End_table}}
{{End_table}}
{{Physico-chemical_quality_elements_header}}
{{Physico-chemical quality elements header}}
{{Physico-chemical_quality_element_table_row
{{Physico-chemical quality element table row
|Element=
|Element=Nutrient concentrations
   
|Monitored before=Yes
   
|Monitored after=No
   
|Qualitative monitoring=No
   
|Quantitative monitoring=No
      Nutrient concentrations
|Control site used=No
|Monitored before=
|Result=Improvement
     
}}
|Monitored after=
{{Physico-chemical quality element table row
     
|Element=Salinity
|Qualitative monitoring=
|Monitored before=No
     
|Monitored after=Yes
|Quantitative monitoring=
|Qualitative monitoring=No
     
|Quantitative monitoring=No
|Control site used=
|Control site used=No
     
}}
|Result=
{{Physico-chemical quality element table row
      Improvement
|Element=PH
|Monitored before=No
|Monitored after=No
|Qualitative monitoring=No
|Quantitative monitoring=No
|Control site used=No
}}
{{Physico-chemical quality element table row
|Element=Oxygen balance
|Monitored before=No
|Monitored after=No
|Qualitative monitoring=No
|Quantitative monitoring=No
|Control site used=No
}}
{{Physico-chemical quality element table row
|Element=Temperature
|Monitored before=No
|Monitored after=No
|Qualitative monitoring=No
|Quantitative monitoring=No
|Control site used=No
}}
}}
{{End_table}}
{{End_table}}
{{Other_responses_header}}
{{Other responses header}}
{{Other_response_table_row
{{Other response table row
|Element=
|Element=Important biogeochemical role for nutrient retention andcycling.
   
|Monitored before=Yes
   
|Monitored after=No
   
|Qualitative monitoring=No
   
|Quantitative monitoring=No
      Important
|Control site used=No
biogeochemical role for nutrient retention and
|Result=Improvement
cycling.
}}
|Monitored before=
{{Other response table row
     
|Element=Fish
|Monitored after=
|Monitored before=No
     
|Monitored after=Yes
|Qualitative monitoring=
|Qualitative monitoring=No
     
|Quantitative monitoring=No
|Quantitative monitoring=
|Control site used=No
     
}}
|Control site used=
{{Other response table row
     
|Element=Pastures
|Result=
|Monitored before=No
      Improvement
|Monitored after=No
|Qualitative monitoring=No
|Quantitative monitoring=No
|Control site used=No
}}
{{Other response table row
|Element=Reed
|Monitored before=No
|Monitored after=No
|Qualitative monitoring=No
|Quantitative monitoring=No
|Control site used=No
}}
{{Other response table row
|Element=Medicinal plants
|Monitored before=No
|Monitored after=No
|Qualitative monitoring=No
|Quantitative monitoring=No
|Control site used=No
}}
}}
{{End_table}}
{{End_table}}
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}}
}}
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{{Monitoring_documents_end}}
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{{Additional_Documents}}
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{{Additional_Documents_end}}
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|Information=
|Information=
      
      
   
   
   
   
   
   
   
   
   
   
     
}}
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{{Case_study_upload}}
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Latest revision as of 09:45, 2 June 2017

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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.

Monitoring surveys and results

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Lessons learnt

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Image gallery


Satellite image of Cernovca area (1993)
Satellite image of Cernovca area (1996)
ShowHideAdditionalImage.png


Catchment and 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

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

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

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

Structural measures
Bank/bed modifications Create breaches in the bank
Floodplain / River corridor Creation of wetland
Planform / Channel pattern Reconnecting polder
Other
Non-structural measures
Management interventions
Social measures (incl. engagement)
Other


Monitoring

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

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

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

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




Additional documents and videos


Additional 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

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