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Floating water plantain Luronium natans (L) Raf.: Current distribution and status in Llyn Padarn and Llyn Cwellyn, Wales

Goldsmith, BJ; Shilland, EM; Shilland, JD; Turner, SD; (2014) Floating water plantain Luronium natans (L) Raf.: Current distribution and status in Llyn Padarn and Llyn Cwellyn, Wales. (ECRC Research Report 161 ). UCL Environmental Change Research Centre: London, UK. Green open access

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Abstract

Luronium natans is native to the UK and is protected by UK and European law under Annexes II and IV of the Habitats Directive, Appendix I of the Bern Convention, Schedule 4 of the Conservation (Natural Habitats, etc.) Regulations 1994, and Schedule 8 of the Wildlife and Countryside Act, 1981. It is also listed as UK priority BAP species and the current distribution is restricted to less than 100 hectads in the UK and it should therefore be classed as nationally scarce (Lockon 2014). The main stronghold for the species is in the oligotrophic lakes of central Wales and Cumbria, as well as some canals in Wales and Shropshire (Preston et al. 2002). Due to its deep-water habit, L. natans is easily overlooked and although this may have resulted in it being under-recorded in some locations, there is also evidence of it having been lost from some lowland sites in recent years (Preston & Croft 1997). In Llyn Padarn, Luronium natans was first recorded in 1848 (Kay et al. 1999), and more recently is known to have been relatively common with records from at least 4 distinct locations reported by Andy Jones in 1997 (CCW Species & Monitoring Report No. 98/02/11 - Luronium natans (floating water-plantain) at Llyn Padarn SSSI) ( Figure 1). Survey data since 1997 are less complete. The aquatic flora was surveyed using Common Standard Monitoring methodology (JNCC 2005) for WFD assessment (Goldsmith et al. 2005, 2010, 2013), but this method does not necessitate whole-site assessment and L. natans was only recorded in one survey section at the south east end of the lake (an extensive bed from 0.8 – 2.4 m water depth). The other survey sections did not coincide with earlier L. natans records and therefore the extent of the species within the lake since 1997 has not been verified.

Type: Report
Title: Floating water plantain Luronium natans (L) Raf.: Current distribution and status in Llyn Padarn and Llyn Cwellyn, Wales
Open access status: An open access version is available from UCL Discovery
Publisher version: https://www.geog.ucl.ac.uk/research/research-centr...
Language: English
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL SLASH
UCL > Provost and Vice Provost Offices > UCL SLASH > Faculty of S&HS
UCL > Provost and Vice Provost Offices > UCL SLASH > Faculty of S&HS > Dept of Geography
URI: https://discovery.ucl.ac.uk/id/eprint/10114782
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