Case study:ReNaturalize

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Location: 20° 10' 45.39" S, 40° 30' 6.67" W
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Project overview

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Status In progress
Project web site http://www.aplysia.com.br/renaturalize/
Themes Environmental flows and water resources, Fisheries, Habitat and biodiversity, Hydromorphology, Monitoring, Social benefits, Water quality
Country Brazil
Main contact forename Carolina
Main contact surname Pinto
Main contact user ID User:Carolfp10
Contact organisation Aplysia
Contact organisation web site http://www.aplysia.com.br/site/en/
Partner organisations FAPES, FINEP
Parent multi-site project
This is a parent project
encompassing the following
projects
No
Project ReNaturalize River Mangaraí ES Brazil

Project summary

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The project ReNaturalize consists on the installation of large wood (LWD) in the River Mangaraí, ES-Brazil. It is an innovative initiative of Aplysia Environmental Solutions. In this project a British technique of river restoration was used where tree trunks are installed on the riverbed as a form of river restoration. The aim is to restore natural river processes that can support healthier and more biodiverse aquatic environments. In other words, the project aims to restore the natural function of the river, that happens when riparian vegetation grows wirth trees and branches falling naturally in the river, creating healthier environments in a sustainable manner. We also seek the integration with local communities. To integrate the community's goals with the project objectives aligning interests.

The installations included techniques listed below: - 'D' structures; - Flexible anchoring large wood; - Rigid anchoring; - 'Staking';

Monitoring surveys and results

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Monitoring for the project is in progress. The aim is to have intensive monitoring as to understand the effectiveness of wood in a tropical environment including: water quality, sediment quality, aquatic biota (fish and macroinvertebrates), hydrology, hydromorfology and public perception during the 2 years of the project. Results will be shared once the restoration project is completed.

Lessons learnt

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Image gallery


Installation of flexible structure
Faggot bundles
D structure
Steel cable anchor
RENATURALIZE 2015-08-14 11-24-58 edit reduzida.jpg
ShowHideAdditionalImage.png


Catchment and subcatchment

Catchment

River basin district East- Atlantic
River basin Santa Maria da Vitória

Subcatchment

River name Mangaraí
Area category 100 - 1000 km²
Area (km2) 174174 km² <br />17,400 ha <br />
Maximum altitude category 500 - 1000 m
Maximum altitude (m)
Dominant geology
Ecoregion
Dominant land cover Woodland, Rough unimproved grassland/pasture, Plantation forestry, Irrigated land
Waterbody ID



Site

Name
WFD water body codes
WFD (national) typology
WFD water body name
Pre-project morphology Single channel, Over-widened, shallow
Reference morphology
Desired post project morphology
Heavily modified water body No
National/international site designation
Local/regional site designations
Protected species present No
Invasive species present Yes
Species of interest
Dominant hydrology Groundwater
Dominant substrate Sand
River corridor land use Broadleaf/mixed woodland (semi natural), Rough unimproved grassland/pasture
Average bankfull channel width category 10 - 50 m
Average bankfull channel width (m)
Average bankfull channel depth category Less than 0.5 m
Average bankfull channel depth (m)
Mean discharge category 1 - 10 m³/s
Mean annual discharge (m3/s)
Average channel gradient category
Average channel gradient
Average unit stream power (W/m2) 2 2 W/m² <br />


Project background

Reach length directly affected (m) 200200 m <br />0.2 km <br />20,000 cm <br />
Project started 2014/11/20
Works started
Works completed
Project completed 2016/11/20
Total cost category
Total cost (k€)
Benefit to cost ratio
Funding sources

Cost for project phases

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



Reasons for river restoration

Mitigation of a pressure Riparian development, Drinking water storage and supply
Hydromorphology Silting
Biology Biodiversity loss
Physico-chemical Suspended Solids
Other reasons for the project High levels of suspended sediment


Measures

Structural measures
Bank/bed modifications Introducing large woody debris
Floodplain / River corridor Introducing large woody debris
Planform / Channel pattern Introducing large woody debris
Other
Non-structural measures
Management interventions
Social measures (incl. engagement) Community Education
Other


Monitoring

Hydromorphological quality elements

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

Biological quality elements

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

Physico-chemical quality elements

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

Any other monitoring, e.g. social, economic

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


Monitoring documents



Additional documents and videos


Additional links and references

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Supplementary Information

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