Table 6 in Taxonomic revision of the southern hemisphere pygmy forget-me-not group (Myosotis; Boraginaceae) based on morphological, population genetic and climate-edaphic niche modelling data

Table 6. Suggested threat classifications of the pygmy forget-me-not (Myosotis) group, and the data used to determine these.
Species and subspecies as newly circumscribedMyosotis antarctica Hook.f. subsp. antarcticaMyosotis antarctica subsp. traillii KirkMyosotis brevis de Lange & BarklaMyosotis glauca (G.Simpson & J.S.Thomson) de Lange & BarklaAverage population size A4050190 (North Island); 1000 (South Island); 500 (overall)70Range in population size A6–1505–20050–20005–2000Number of populations A2013105Total number of populations estimated to be extant B299583538TOTAL estimated census size based on average population size number of populations12 006287517 6004601Number of populations thought to be no longer extant2 C3 D1 E1 FPopulation trendStableDeclining 10–20%Fluctuating (Rogers et al. 2002)StableArea of occupancy (AOO)1.69 km B0.35 km B0.25 km B0.17 km BThreat status in de Lange et al. (2018)As M. drucei: Not Threatened. As M. antarctica: At Risk: Naturally Uncommon DP G, Sp, TOAs M. pygmaea: At Risk: Declining SpThreatened: Nationally Vulnerable EF, SpThreatened: Nationally Vulnerable DP G, SpSuggested threat statusAt Risk: Naturally UncommonThreatened: Nationally VulnerableThreatened: Nationally VulnerableThreatened: Nationally VulnerableSuggested qualifiersSp, TOSpEF, SpRR, Sp,Criteria relevant for selecting the suggested threat status from Townsend et al. (2008)Population stable; 5000–20 000 estimated total number of mature individualsStatus: C(1) 1000–5000 mature individuals, and C(3) area of occupancy <100 ha (1 km B). Trend: predicted decline 10–50%Status: C(3) area of occupancy <100 ha (1 km B). Trend: predicted decline 10–50%Status: B(1) 1000–5000 mature individuals, and B(3) area of occupancy <100 ha (1 km B). Trend: stable populationPercentage populations on DOC managed land (see Supplementary Table S1)72262431
Note: DP, data poor; EF, extreme fluctuations; RR, range restricted; Sp, biologically sparse; TO, threatened overseas (NZTCS; see Rolfe et al. 2021).
A Based on populations visited 2011–2015; see table 2 in Prebble et al. 2019.
B Calculated from the number of population locations identified, based on herbarium specimens at AK, CHR, OTA and WELT.
C Campbell Island, Windlass Bay; Southern North Island, Matamau.
D Southern North Island: Wairarapa, Castle Point; Taranaki: Puketapu Road; Weston Nelson: Wharariki Beach.
E Gisborne: East Cape.
F Canterbury: Lake Ohau.
G As of October 2019, the qualifier DP has been replaced with three new qualifiers to better describe the knowledge gaps that affect assessments, but this change happened after the assessment this row refers to. Given the additional information gathered for this study, none of the DP qualifiers is suggested for the newly circumscribed taxa.