Source: https://tendernation.io/opportunities/01a13c66-baba-71b5-8c4c-4ac53149ad80/biological-control-of-invasive-non-native-riparian-weeds awarded GB direct award procedure # Biological Control of Invasive Non-Native Riparian Weeds [Defra Network eTendering Portal](https://tendernation.io/buyers/defra-network-etendering-portal) Often single bidder Estimated value £372,070 Published 28 Jul 2021 Deadline Closed 31 Mar 2020 ## About this tender Defra has invested in research to support the management of invasive, non-native species (INNS) for several years. It is a key aspect of the GB INNS Strategy, which Defra is committed to delivering under the 25 Year Environment Plan. The Environmental Audit Committee recently recommended a rapid expansion of support for it. This contract will enable us to continue to fund such research to enable cost-effective, long-term and species-specific control of priority INNS plants, which cost Great Britain approximately £2 billion a year by having significant impacts on biodiversity, infrastructure, flooding, the economy and safety. The invasive non-native riparian weeds Japanese knotweed (JK, Fallopia japonica), Himalayan balsam (HB, Impatiens glandulifera), floating pennywort (FP, Hydrocotyle ranunculoides) and Australian swamp stonecrop (ASSC, Crassula helmsii) can have major impacts on invaded water bodies and connected habitats by reducing biodiversity, restricting access, increasing flood risks and impeding transport and recreation. These weeds have also been a key constraint to compliance with requirements of invasive alien species legislation, which specifically names HB and FP as invasive alien species (IAS) of Union concern. They are likely to remain highly problematic for the UK. Due to their proximity to water, the options for conventional control are limited, thus classical biological control using damaging and host-specific natural enemies from the respective native ranges of the plant species can offer a suitable alternative. Since 2011 Defra has funded research into biological control of HB, FP and ASSC under the contract "Assessing the potential for biological control for weeds impacting on Water Framework Directive targets (Biocontrol for WFD weeds)" awarded to CABI. Research for JK, funded initially (2003 onwards) by a consortium including Defra, has been mainly supported by Defra since 2013. The most recent contract "Biological Control of Invasive N Additional information: Please note that Defra procurement uses an E-tendering system for Procurement activities. This is currently provided by Bravo Solutions. To access appropriate tendering and contractual documents, please access the E-Tendering portal at [defra.bravosolution.co.uk](https://defra.bravosolution.co.uk)", ensuring that your registration includes "Defra". If you have any problems with this system, please contact Bravo on their telephone helpline number 0800 368 4850 or by emailing them at Read full description ## CPV classification Research services Source Contracts Finder (UK) [View official notice](https://www.contractsfinder.service.gov.uk/notice/12e56c61-4cd9-4f12-b9c9-1c154d2d6b39) Never miss a tender like this again Get AI summaries, deadline alerts and a bid pipeline for tenders matched to your business. Free to start. [Track tenders free](https://tendernation.io/register) [Buyer profile Defra Network eTendering Portal: past awards and live tenders](https://tendernation.io/buyers/defra-network-etendering-portal) [Sector More Research & development tenders](https://tendernation.io/sectors/research-development) ## More tenders like this [Research and development consultancy services – ATU wishes to establish a Panel of National Contact Point Experts across EU Member States to build capacity to incorporate EU Results-Based Payments Schemes in Public or Private Support Schemes. · Atlantic Technological University · 438 days left · 31 Dec 2027](https://tendernation.io/opportunities/01a156a9-ccf1-7050-b440-6554b4a1426f/ireland-austria-slovenia-research-and-development-consultancy-services-atu) [Research services – Evaluatie van de implementatie van de proeftuin Pioniersscholen · Vlaamse Overheid · 21 days left · 9 Nov 2026](https://tendernation.io/opportunities/01a156a9-cecf-7255-bee1-542f502ed088/belgium-research-services-evaluatie-van-de-implementatie-van-de-proeftuin-pi) [Research services – KPN/28/2026 „Charakterystyka biogeochemiczna gleb i roślin wybranych torfowisk subalpejskich ze szczególnym uwzględnieniem torfowiska u źródeł Úpy na Równi pod Śnieżką” · Karkonoski Park Narodowy z siedzibą w Jeleniej Górze · 35 days left · 23 Nov 2026](https://tendernation.io/opportunities/01a156a9-97ae-7315-8e1a-e686bca1e724/poland-research-services-kpn282026-charakterystyka-biogeochemiczna-gleb-i) [Research and development services and related consultancy services – Evaluation of Five Pilot Projects Testing Exemptions from Provisions of the Local Government Act, the Property Tax Act, the General Practitioner Regulations, and Other Regulatory Frameworks · Ministry of Local Government and Regional Development · 15 days left · 3 Nov 2026](https://tendernation.io/opportunities/01a156a9-a35e-73b3-8bf4-7d33c32cf58b/norway-research-and-development-services-and-related-consultancy-services-ev) [Research and development services and related consultancy services – Zabezpečenie trvalých a analytických činností pre oblasť dopravy · Ministerstvo dopravy Slovenskej republiky · 31 days left · 19 Nov 2026](https://tendernation.io/opportunities/01a156a9-ce90-72fd-b25d-99b3ee2e8b4b/slovakia-research-and-development-services-and-related-consultancy-services) [Development consultancy services – Accompagnement à la stratégie d'attractivité économique du territoire de GrandSoissons Agglomération (02) · GrandSoissons Agglomération · 44 days left · 2 Dec 2026](https://tendernation.io/opportunities/01a156aa-1b92-70f5-96fc-71a2756e9dc1/france-development-consultancy-services-accompagnement-a-la-strategie-dattr)