Case study:Assessing the habitats outcomes of Floodplain Forest restoration: the case study of the floodplain forest at the Ouse Valley Park

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Location: 52° 4' 17.35" N, 0° 49' 53.50" W

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Project overview

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Status	In progress
Project web site	http://www.theparkstrust.com/parks/floodplain-forest
Themes	Environmental flows and water resources, Habitat and biodiversity, Hydromorphology, Monitoring, Water quality
Country	England
Main contact forename	Natalia
Main contact surname	Perez-Linde
Main contact user ID	User:NataliaLinde
Contact organisation	Cranfield University
Contact organisation web site	http://www.cranfield.ac.uk/about/media-centre/news-archive/news-2014/floodplain-restoration-project.html
Partner organisations	The Parks Trust, Environment Agency, EPSRC (Engineering and Physical Sciences Research Council), Hanson Cement
Parent multi-site project
This is a parent project encompassing the following projects	No

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Project summary

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The Manor Farm Floodplain Forest and its associated PhD research project is a best practice example of bringing together industry (Hanson), a charitable body (The Parks Trust), non-departmental public body (Environment Agency) and academia (Cranfield University). The Parks Trust (land owner) joined forces with Hanson (quarry operator) with the vision of creating this new floodplain forest landscape along of a 1 km reach of the River Great Ouse. It was the first project of its kind in United Kingdom where planning permission was obtained specifically for the creation of a floodplain forest habitat. The Parks Trust owns over 2000 hectares of parkland around Milton Keynes and continually seeks to improve their parks by providing new facilities, increasing biodiversity and enhancing habitats. The Trust joined with Cranfield University to establish a PhD research project to develop a hypothesis-driven adaptive monitoring framework for assessing the environmental outcomes of the Floodplain Forest, as a case study with application to ecological management. Outputs of this research have enhanced understanding of the aspects to consider when assessing floodplain forest re-creation/restoration and have been used to develop guidelines for land managers based on a long-term monitoring approach. These management guidelines will be applicable to other similar restoration projects.

Monitoring surveys and results

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The Parks Trust engaged Cranfield University to help establish a monitoring and evaluation strategy for the floodplain forest. As well as monitoring environmental variables the Trust will instigate market research and community engagement programmes to assess the effect of the developing habitat on how local people and visitors from further afield use and perceive the site.

Cranfield University aimed to assess the habitat outcomes in the floodplain forest after quarry works finished. We have designed an adaptive monitoring framework in order to assess key variables (i.e. creating a baseline for further comparisons over time after restoration works finished). The key variables selected for restoration appraisal are soil, water table, vegetation, water quality and topography. We complement the AMF with a hypothesis (The ratio between vegetation associated with wet and dry soils within the floodplain forest and its associated river is determined by the site topography and the water table level) and study the water table level interaction with tree species in a glasshouse experiment. Results gathered in the experiment will be extrapolated to the field to assess the suitable habitats planting according to water table availability and topography in the floodplain forest.

Lessons learnt

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The project has increased the capacity and flood retention capacity of the floodplain by removing a volume of around 700,000 tonnes of mineral reserves. Some of this volume has been replaced by standing water but under non-flood conditions the standing water lies at lower level that the former ground.

The project has also created better connection between the River Great Ouse and the pre-existing and new channels that have been created in the site. As the river level rises, water can flow into the site (i.e. floodplain) via these channels, thereby receiving floodwater that would previously have put pressure on more developed/built-up areas further down the Ouse Valley, such as Newport Pagnell which has a number of known flood risk areas near the River Ouse.

The complex of channel sand low-lying landforms within the site, including gravel banks, sand bars and small islands provides a varied floodplain habitat that will mature into a diverse ecosystem supporting a wide range of plants and insects, amphibians, birds, fish and mammals such as otter and water vole. The habitats within the site will also contribute to improving water quality by taking-up waterborne nutrients as water passes onto and through the site.

The Parks Trust will operate and maintain the site as a nature reserve open to the general public. This will enable the local community and visitors from further afield to experience the diverse floodplain forest habitat and the wildlife it attracts.

A further benefit of the project is that under the Trust’s charitable remit, the income it received from the gravel sales form the site have been reinvested back into the establishment and care of this environmental project.

With the involvement of Cranfield University, the floodplain forest will be more widely promoted as a case study in habitat creation and restoration techniques and as an on-going subject for scientific monitoring and research. In summary there are a range of ecosystem services provided by the floodplain forest: cultural, regulating and other services.

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Catchment and subcatchment Select a catchment/subcatchment Site Edit site Name WFD water body codes GB105033037920 WFD (national) typology WFD water body name Pre-project morphology 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 No Species of interest Dominant hydrology Dominant substrate River corridor land use Average bankfull channel width category Average bankfull channel width (m) Average bankfull channel depth category Average bankfull channel depth (m) Mean discharge category Mean annual discharge (m3/s) Average channel gradient category Average channel gradient Average unit stream power (W/m2) Project background Edit project background Reach length directly affected (m) Project started Works started Works completed Project completed 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 Edit reasons for restoration Mitigation of a pressure Hydromorphology Encourage natural functioning of the floodplain during flood conditions Biology Long term vision to increase biodiversity in Milton Keynes Physico-chemical Other reasons for the project Integrate wildlife and society Measures Edit Measures Structural measures Bank/bed modifications Floodplain / River corridor Removal of sand from beneath agricultural fields, restoring marsh lands Planform / Channel pattern Other Non-structural measures Management interventions Social measures (incl. engagement) Improved accessibility, bird-watching areas and information boards provided to encourage local interest in the area 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 Biological quality elements Edit biological quality elements Element When monitored Type of monitoring Control site used Result Before measures After measures Qualitative Quantitative 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 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 Monitoring documents Upload monitoring documents Additional documents and videos Upload additional documents Additional links and references Edit links and references Link Description Supplementary Information Edit Supplementary Information