Recording the British and Irish flora 2010-2020 - Botanical Society of ...

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Updating hectads, 2000-2019A key requirement is that all VCs should move now (2010) to anongoing recording programme to achieve at least sample coveragewithin all hectads in their vice-county between 2000 and 2019(i.e. in preparation for the third Atlas of the British and Irish flora).In most counties in England and Wales this will be achievedthrough ongoing flora projects at higher resolution (i.e. tetrad ormonad) and should provide at least tetrad coverage for rarerspecies by the time of the third Atlas. A sampling approach withinhectads will be more suitable for remote counties with fewrecorders. Here recording should match the people available, andas a minimum prioritise ‘good’ sites and sample the full range ofhabitats present in each hectad.BSBI will issue guidance on how to achieve this, including possiblesampling approaches - Annex I - and their effects, and whatsupport the Society can give, for instance through volunteersurvey teams in remote areas. The guidance will focus onapproaches to: Ad hoc recording in each hectad to maximise coverage Sampling within hectads, using tetrads and monads, includingsystematic/random selection or through prioritisation of therichest squares Sampling within hectads using sites, habitats and speciesFigure 8. Recording in mountainous terrain can be arduous and is probablybest achieved by sub-sampling. The Rum Cuillins Photo: Kevin Walker.12
Resolution of recording All recording to be carried out at tetrad resolution or higher(including Scotland and Ireland), linked to the samplingapproaches outlined above. This could include recording at sitelevel, aggregated to tetrad, although this would miss widercountryside species. Recording presence at the 5 × 5 km (pentads, quadrants) andhectad resolution should be avoided although both could beused for designing sampling approaches to collect informationat finer resolution. Recording for all nationally and county rare and scarce and allUK priority species (e.g. UKBAP, Red List) to be undertaken atleast at 100 m resolution - i.e. six figure grid reference. A fulllist of UK Priority Species is currently available on the BSBIwebsite - Annex X. Recording for all axiophytes at least at 100 m resolution - i.e.six figure grid reference New county and/or hectad records, and re-discoveries ofspecies thought to be extinct within vice-counties recorded atleast at 100 m resolution - i.e. six figure grid reference.Resolution of recording 10 m 100 m 1 km 2 kmNationally rare & scarce ✔ ✔UK Priority Species (e.g. Red List, BAP) ✔ ✔Other threatened (e.g. Welsh Red List) ✔ ✔County rare & scarce ✔ ✔Axiophytes ✔ ✔New county or hectad records ✔ ✔Refinds of ‘extinct’ species ✔ ✔All other species ✔ ✔13
Page 1 and 2: Recording the British andIrish flor
Page 3 and 4: ContentsIntroduction 4Overall aim o
Page 5 and 6: Figure 1. BSBI volunteers cover a r
Page 7 and 8: Current recording projectsRecording
Page 9 and 10: Figure 4. Purple Milk-vetch Astraga
Page 11: BSBI recording projects and priorit
Page 15 and 16: Figure 10. Two species which appear
Page 17 and 18: ReferencesBraithwaite, M.E., Ellis,
Page 19 and 20: Annex - BSBI recording guidance and

Recording the British and Irish flora 2010-2020 - Botanical Society of ...

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