Saltmarsh Thread-moss (Bryum salinum)
Key Details
| Taxonomic Groups: | Non-vascular plant (incl. chromists) > moss > Moss |
| Red List Status: | Data Deficient (Not Relevant) [DD(nr)] |
| D5 Status: | |
| Section 41 Status: | (not listed) |
| Taxa Included Synonym: | Ptychostomum salinum |
| UKSI Recommended Name: | Bryum salinum |
| UKSI Recommended Authority: | I.Hagen ex Limpr. |
| 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: | Evidence suggests it is at risk of extinction in England, but taxonomy is unresolved |
| Question 2: | Does recovery/ conservation depend on species-specific actions? |
| Response: | Yes |
| Justification: | Clarification of taxonomic status is 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 has a restricted distribution and so is unlikely to benefit from untargeted actions |
Species Assessment
| Current step on the Species Recovery Curve (SRC): | 1. Taxonomy established |
| Recovery potential/expectation: | Low - Combination or other (detail in comments) |
| National Monitoring Resource: | Opportunistic - insufficient |
| Species Comments: | GB RL criteria: n/a. Boreo-arctic Montane European species. Recovery potential low due to climate change and natural rarity. |
Key Actions
Key Action 1
Proposed Action: Clarify phylogeny and taxonomy
Action targets: 1. Taxonomy established
Action type: Scientific research
Duration: 2 years
Scale of Implementation: National
High priority sites:
Comments: Very limited molecular data exist, which do not provide strong support for species recognition. Molecular investigation is recommended before any other action takes place.
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 Boreo-arctic 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.