Case study:The Babina Restoration Project

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Location: 45° 25' 29.15" N, 29° 24' 42.35" 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

The Babina - present situation

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 Babina polder (2.100 ha) was reconnected to the Danube in 1994 and recovery has been monitored by the Danube Delta National Institute for Research and Development. 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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Catchment and subcatchment

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(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 Cernovca Restoration Project

Site

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Name	Agricultural polder Babina
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, Floodplain area
Dominant substrate	Sand, Clay
River corridor land use	Grassland, Wetland
Average bankfull channel width category	more than 50 m
Average bankfull channel width (m)	340340 m <br />0.34 km <br />34,000 cm <br />
Average bankfull channel depth category	0.5 - 2 m
Average bankfull channel depth (m)	1.951.95 m <br />0.00195 km <br />195 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	0.01 - 0.1
Average channel gradient	0.015
Average unit stream power (W/m2)	1560.17832352941,560.178 W/m² <br />

Project background

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Reach length directly affected (m)
Project started	1991/01/01
Works started	1994/04/01
Works completed	1994/05/01
Project completed
Total cost category	10 - 50 k€
Total cost (k€)	24072,407 k€ <br />2,407,000 € <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			The Danube Delta Biosphere Reserve Authority, Tulcea	Marian	Tudor
Stakeholder engagement and communication			The Danube Delta Biosphere Reserve Authority, Tulcea	Marian	Tudor
Works and works supervision			The Danube Delta Biosphere Reserve Authority, Tulcea
Post-project management and maintenance			The Danube Delta Biosphere Reserve Authority, Tulcea
Monitoring			The Danube Delta National Institute for Research and Development, Tulcea (office@indd.tim.ro)	Marian	Tudor

Reasons for river restoration

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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

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Structural measures
Bank/bed modifications
Floodplain / River corridor	Creation of wetlands
Planform / Channel pattern	Reconnecting Babina polder to the Danube flooded regime
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
Quantity & dynamics of flow						Improvement
Continuity of sediment transport						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
Phytoplankton: Taxonomic 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						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
Ecological tourism development						Improvement

Monitoring documents

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Development of zoobenthos in the restored polder Babina

The evolution of Babina polder after restoration work

Image gallery

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The Babina polder before restoration

The Babina polder after restoration

Restored lake and Babina Island

European mink (Mustela lutreola) in the restored area

European otter (Lutra lutra) in the restored area

Little egret (Egretta garzetta) in the restored area

Satellite image of Babina area (1993)

Satellite image of Babina area (1996)

Additional documents and videos

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Babina and Cernovca Islands

Additional links and references

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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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