Case study:Test and Itchen Invasive Non-Native Project Species Project

Project overview

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Status	In progress
Project web site	http://storymaps.arcgis.com/stories/176a464b691a44158f626f3594127a4d
Themes	Habitat and biodiversity
Country	England
Main contact forename	Sam
Main contact surname	Orchard
Main contact user ID
Contact organisation	Test and Itchen Catchment Partnership
Contact organisation web site
Partner organisations	Environment Agency
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 Test and Itchen Invasive Non Native Species (INNS) Project is an ambitious multi-year partnership project aiming to reduce the impact of invasive non native species on the precious native wildlife and habitats of the Test and Itchen river catchments. https://storymaps.arcgis.com/stories/176a464b691a44158f626f3594127a4d

The project was developed when multiple stakeholders and members of the Test and Itchen Catchment Partnership raised concerns around the growing threat posed by invasive species on the integrity of these globally rare chalk streams. The first phase of the project was conducted by the Hampshire and Isle of Wight Wildlife Trust, collecting data and pooling resources to determine the current understanding of invasive non native species distribution in the catchments. Partners agreed a multi-stakeholder, collaborative, catchment scale approach was required to tackle the threat posed by invasive non native species and improve the health of our rivers.

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Location: 51° 0' 45.13" N, 1° 25' 57.46" W

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Catchment and subcatchment Select a catchment/subcatchment Edit the catchment and subcatchment details (affects all case studies in this subcatchment) Catchment River basin district South East River basin Test and Itchen Subcatchment River name River Itchen Area category 100 - 1000 km² Area (km2) Maximum altitude category 100 - 200 m Maximum altitude (m) 190190 m <br />0.19 km <br />19,000 cm <br /> Dominant geology Calcareous Ecoregion Great Britain Dominant land cover Arable and Horticulture Waterbody ID GB107042022580 Site Edit site Name WFD water body codes WFD (national) typology WFD water body name Pre-project morphology Reference morphology Desired post project morphology Heavily modified water body National/international site designation Local/regional site designations Protected species present Invasive species present 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 Biology Physico-chemical Other reasons for the project Measures Edit Measures Structural measures Bank/bed modifications Floodplain / River corridor Planform / Channel pattern Other Non-structural measures Management interventions Social measures (incl. engagement) 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