Topshape Thread-moss (Bryum turbinatum)
Key Details
| Taxonomic Groups: | Non-vascular plant (incl. chromists) > moss > Moss |
| Red List Status: | Critically Endangered/Possibly Extinct (Not Relevant) [CR(PE)(nr)] |
| D5 Status: | Included in the baseline Red List Index for England (Wilkins, Wilson & Brown, 2022) |
| Section 41 Status: | (not listed) |
| Taxa Included Synonym: | (none) |
| UKSI Recommended Name: | Bryum turbinatum |
| UKSI Recommended Authority: | (Hedw.) Turner |
| UKSI Recommended Qualifier: | (none specified) |
| Red List Citation: | Callaghan, 2023 |
| Notes on taxonomy/listing: | (none) |
Criteria
| Question 1: | Does species need conservation or recovery in England? |
| Response: | Yes |
| Justification: | Possibly extinct in England but may still persist |
| Question 2: | Does recovery/ conservation depend on species-specific actions? |
| Response: | Yes |
| Justification: | Species-specific searches are required |
| Question 3: | At a landscape scale, would the species benefit from untargeted habitat management to increase habitat mosaics, structural diversity, or particular successional stages? |
| Response: | No |
| Justification: | The species is possibly extinct and so is unlikely to benefit from untargeted actions |
Species Assessment
| Current step on the Species Recovery Curve (SRC): | 2. Biological status assessment exists |
| Recovery potential/expectation: | Low - Combination or other (detail in comments) |
| National Monitoring Resource: | Opportunistic - insufficient |
| Species Comments: | GB RL criteria: D1. Boreal-montane Eurasian species. Recovery potential low due to climate change and natural rarity. |
Key Actions
Key Action 1
Proposed Action: Undertake surveys and data analysis to determine IUCN Red List status in England
Action targets: 2. Biological status assessment exists
Action type: Status survey/review
Duration: 1 year
Scale of Implementation: ≤ 20 sites
High priority sites:
Comments: Species-specific searches have been insufficiently extensive, seemingly limited to one site (dune slacks on the Sefton Coast). No searches appear to have been undertaken at Thrum Rocks (South Northumberland) where suitable habitat may persist.
Key Action 2
Proposed Action: Undertake species distribution modelling to understand the vulnerability of the species to projected climate change over the next 50 years
Action targets: 4. Autecology and pressures understood
Action type: Scientific research
Duration: 1 year
Scale of Implementation: National
High priority sites:
Comments: A Boreal-montane species that may be particularly vulnerable to climate warming
Acknowledgment:
Data used on this website are adapted from Threatened species recovery actions 2025 baseline (JP065): Technical report and spreadsheet user guide (Natural England, 2025). Available here.