Notice Information
Notice Title
River Dee Freshwater Pearl Mussel Surveys for population recovery work
Notice Description
Re-survey of 2023 Site Condition Monitoring Sites containing pearl mussels (17 sites). Produce report on all sites to include condition, restoration potential and threats. Identify potential ARK sites within tributaries.
Lot Information
Lot 1
This contract is to continue two of the activities based on recommendations arising from the report (Cooksley et al., 2025). 1. Assessment of selected pearl mussel sites - The 2022 SCM survey established the broad distribution of pearl mussels along the mainstem of the Dee. This involved spot-checks (5 x 1 m transects) made every 100m followed by a 50m transect at 27 sites to gather more detailed information about the population. - In 2024 ten sites were chosen for further analysis being those with the highest numbers of mussels and most suitable habitat. Range of age class, habitat and ongoing recruitment was recorded (Cooksley et al., 2025). - We would like to find out more detailed information on the remaining 17 SCM sites and two further identified sites including population structure at that site, juvenile recruitment/ habitat stability/suitability, host fish habitat presence and pressures. 2. Identification of Ark/refuge sites - The pearl mussels remaining in the main stem are vulnerable to future flood events and also drought as they are located in the very edges of the riverbed, twenty years ago mussels could be found across the width of the main stem in many places and now they are largely confined to the edges as much of the centre of the river now has unstable unsuitable habitat. - We would like to identify ark or refuge sites within the tributaries which would be suitable locations to transfer mussels from captive breeding or translocation, this will help provide a safeguard against losing the whole population if another large flood event were to further impact on the main stem population. - Selected tributaries will be assessed using a desk-based methodology based on available LiDAR survey data (10cm resolution and including photo grammatic images) to identify suitable stable habitat without obvious pressures or pressures which can be remedied which could serve as future potential refuge or ark sites. - Killeen & Moorkens (2016) have identified that suitable receptor sites may have been formerly occupied by mussels and now have now been restored or pressures removed, have a suitable flow regime providing hydrological and hydraulic conditions that encourage stable habitats, and the geomorphological conditions must be suitable or have the ability to be made suitable. - Concurrently a study is being undertaken by NatureScot to identify the best methods to undertake population recovery these are to include analysis of conservation breeding and translocation, the information provided from this survey will feed into the study and provide a baseline for future work.
Renewal: Potential extension for summer survey 2026.
Notice Details
Publication & Lifecycle
- Open Contracting ID
- ocds-r6ebe6-0000810692
- Publication Source
- Public Contracts Scotland
- Latest Notice
- https://www.publiccontractsscotland.gov.uk/search/show/search_view.aspx?ID=DEC545000
- Current Stage
- Award
- All Stages
- Tender, Award
Procurement Classification
- Notice Type
- PCS Notice - Website Contract Award Notice
- Procurement Type
- Standard
- Procurement Category
- Services
- Procurement Method
- Open
- Procurement Method Details
- Open procedure
- Tender Suitability
- Not specified
- Awardee Scale
- Large
Common Procurement Vocabulary (CPV)
- CPV Divisions
71 - Architectural, construction, engineering and inspection services
79 - Business services: law, marketing, consulting, recruitment, printing and security
90 - Sewage, refuse, cleaning and environmental services
-
- CPV Codes
71355000 - Surveying services
79311000 - Survey services
79311200 - Survey conduction services
90720000 - Environmental protection
90721700 - Endangered species protection services
90721800 - Natural risks or hazards protection services
Notice Value(s)
- Tender Value
- £30,000 Under £100K
- Lots Value
- £30,000 Under £100K
- Awards Value
- Not specified
- Contracts Value
- £58,201 Under £100K
Notice Dates
- Publication Date
- 5 Dec 20252 days ago
- Submission Deadline
- 13 Oct 2025Expired
- Future Notice Date
- Not specified
- Award Date
- 12 Nov 20253 weeks ago
- Contract Period
- Not specified - Not specified
- Recurrence
- Not specified
Notice Status
- Tender Status
- Complete
- Lots Status
- Complete
- Awards Status
- Not Specified
- Contracts Status
- Active
Buyer & Supplier
Contracting Authority (Buyer)
- Main Buyer
- CAIRNGORMS NATIONAL PARK AUTHORITY
- Additional Buyers
- Contact Name
- Mikko Olavi Saari
- Contact Email
- mikkosaari@cairngorms.co.uk, mpip@gov.scot
- Contact Phone
- +44 1479873535
Buyer Location
- Locality
- GRANTOWN-ON-SPEY
- Postcode
- PH26 3HG
- Post Town
- Perth
- Country
- Scotland
-
- Major Region (ITL 1)
- TLM Scotland
- Basic Region (ITL 2)
- TLM3 West Central Scotland
- Small Region (ITL 3)
- TLM32 Glasgow City
- Delivery Location
- TLM62 Inverness and Nairn, Moray, and Badenoch and Strathspey
-
- Local Authority
- Glasgow City
- Electoral Ward
- Anderston/City/Yorkhill
- Westminster Constituency
- Glasgow North
Further Information
Notice Documents
-
https://www.publiccontractsscotland.gov.uk/NoticeDownload/DownloadDocument.aspx?id=SEP539561&idx=1
19th September 2025 - ITT Brief - Surveys for Dee FWPM Recovery Work -
https://www.publiccontractsscotland.gov.uk/NoticeDownload/DownloadDocument.aspx?id=SEP539561&idx=2
19th September 2025 - CNPA Terms & Conditions -
https://www.publiccontractsscotland.gov.uk/search/show/search_view.aspx?ID=SEP539561
River Dee Freshwater Pearl Mussel Surveys for population recovery work - Re-survey of 2023 Site Condition Monitoring Sites containing pearl mussels (17 sites). Produce report on all sites to include condition, restoration potential and threats. Identify potential ARK sites within tributaries. -
https://www.publiccontractsscotland.gov.uk/search/show/search_view.aspx?ID=DEC545000
River Dee Freshwater Pearl Mussel Surveys for population recovery work - Re-survey of 2023 Site Condition Monitoring Sites containing pearl mussels (17 sites). Produce report on all sites to include condition, restoration potential and threats. Identify potential ARK sites within tributaries.
Open Contracting Data Standard (OCDS)
View full OCDS Record for this contracting process
The Open Contracting Data Standard (OCDS) is a framework designed to increase transparency and access to public procurement data in the public sector. It is widely used by governments and organisations worldwide to report on procurement processes and contracts.
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