Case study:Ecological reconstruction of islands resulted after Sf. Gheorghe Arm rectification - project 3

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Location: 44° 57' 38.41" N, 29° 27' 53.34" 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	Eugenia
Main contact surname	Cioaca
Main contact user ID
Contact organisation	Danube Delta National Institute for Research and Development, Tulcea
Contact organisation web site	http://www.ddni.ro
Partner organisations
Parent multi-site project
This is a parent project encompassing the following projects	No

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Project summary

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Monitoring surveys and results

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Lessons learnt

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Catchment and subcatchment

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(affects all case studies in this subcatchment)

Catchment

River basin district	Danube
River basin	Danube

Subcatchment

River name	Sf. Gheorghe Branch
Area category	more than 10000 km²
Area (km2)
Maximum altitude category	Less than 100 m
Maximum altitude (m)	0.5 m5.0e-4 km <br />50 cm <br />
Dominant geology	Organic (i.e. Peat)
Ecoregion	Pontic Province
Dominant land cover	Wetland
Waterbody ID

Other case studies in this subcatchment: Ecological reconstruction of islands resulted after Sf. Gheorghe Arm rectification - project 1, Ecological reconstruction of islands resulted after Sf. Gheorghe Arm rectification - project 2, The Holbina-Dunavat Restoration Project

Site

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Name	Ivancea Island
WFD water body codes
WFD (national) typology
WFD water body name
Pre-project morphology	Closed culvert
Reference morphology	Groundwater dominated
Desired post project morphology
Heavily modified water body
National/international site designation
Local/regional site designations	World Hertiage Site
Protected species present
Invasive species present
Species of interest
Dominant hydrology	Artificially regulated
Dominant substrate	Clay
River corridor land use	Wetland
Average bankfull channel width category	5 - 10 m
Average bankfull channel width (m)	1010 m <br />0.01 km <br />1,000 cm <br />
Average bankfull channel depth category	0.5 - 2 m
Average bankfull channel depth (m)	2 m0.002 km <br />200 cm <br />
Mean discharge category
Mean annual discharge (m3/s)	22 m³/s <br />2,000 l/s <br />
Average channel gradient category
Average channel gradient	0.015
Average unit stream power (W/m2)	29.42129.421 W/m² <br />

Project background

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Reach length directly affected (m)	810 m0.81 km <br />81,000 cm <br />
Project started	2006/01/01
Works started	2007/08/01
Works completed	2007/10/01
Project completed
Total cost category	100 - 500 k€
Total cost (k€)
Benefit to cost ratio
Funding sources	Environment Ministry, Environment and Water Management Ministry

Cost for project phases

Phase	cost category	cost exact (k€)	Lead organisation	Contact forename	Contact surname
Investigation and design	50 - 100 k€		Danube Delta National Institute	Dan	David
Stakeholder engagement and communication			Tulcea Forestry Administration	Radu	Vasile
Works and works supervision			Danube Delta National Institute	Dan	David
Post-project management and maintenance			Tulcea Forestry Administration	Radu	Vasile
Monitoring	100 - 500 k€	300 k€300,000 € <br />	Danube Delta National Institute, Tulcea	Eugenia	Cioaca

Reasons for river restoration

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Mitigation of a pressure
Hydromorphology	Quantity & dynamics of flow
Biology	Fish: Disturbance-sensitive species
Physico-chemical	Nutrient concentrations
Other reasons for the project	Community demand

Measures

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Structural measures
Bank/bed modifications
Floodplain / River corridor
Planform / Channel pattern	Canals to improve the hydrologic regime
Other
Non-structural measures
Management interventions
Social measures (incl. engagement)	Improved public access
Other	Information provision

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
Quantity & dynamics of flow						Improvement

Biological quality elements

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quality elements

Element	When monitored		Type of monitoring		Control site used	Result
	Before measures	After measures	Qualitative	Quantitative
Fish: Species composition						Improvement

Physico-chemical quality elements

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quality elements

Element	When monitored		Type of monitoring		Control site used	Result
	Before measures	After measures	Qualitative	Quantitative
Nutrient concentrations			Yes			Improvement

Any other monitoring, e.g. social, economic

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Element	When monitored		Type of monitoring		Control site used	Result
	Before measures	After measures	Qualitative	Quantitative
Public awareness of fish catching						Improvement

Monitoring documents

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Image gallery

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Additional documents and videos

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Additional links and references

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Link	Description
http://www.ddni.ro	The site of the Danube Delta National Institute for Research and Development (DDNIRD)

Supplementary Information

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