PMC

The lifecycle diagram of H. canterburyana on Lord Howe Island, and values previously calculated for matrix table. Ssn, stage-specific survival rate; Sn, transition survival rate; and Fecn, fecundity.

Climate on Lord Howe Island, 1940–2010. (a) Mean annual maximum temperatures. (b) Mean annual minimum temperatures. (c) Total annual rainfall.

Plot of the Principle Coordinates analysis output showing the genetic relationship as measured at 10 microsatellite loci between all 237 individuals sampled across all populations, where symbols (see legend) indicate the population of each individual.

RAMAS probability trajectory summaries for low altitude, high altitude and associated rat control scenarios of H. canterburyana for 200 years. Line is mean value with 1 vertical standard deviation bars. Red diamonds are minimum and maximums. Models were run for populations in one Hectare.

Map showing the location of Lord Howe Island in relation to Australia, highlighting the southern mountains, Mt Lidgbird (777 m) and Mt Gower (875 m). Enlargement map showing sites where H. canterburyana was sampled: genetics sampling sites, population demographic sampling sites, long term monitoring sites and combination sampling sites. The steep topography is indicated with 20 m contour lines from sea level to 860 m.

The percentage of H. canterburyana in each height class with each number of inflorescences present across all sites combined. Colours indicate the number of inflorescences, see legend. Height classes, 4 = trunk <0.5 m, 5 = trunk 0.5–1 m, 6 = trunk 1–1.5 m, 7 = trunk 1.5–2 m, 8 = trunk 2–2.5 m, 9 = trunk 2.5–3 m, 10 = trunk 3–3.5 m, 11 = trunk 3.5–4 m, 12 = trunk 4–4.5 m, 13 = trunk 4.5–5 m, 14 = trunk 5–6 m, 15 = trunk > 6 m.

Proportion of H. canterburyana individuals in each height class calculated at each site (%; y axis). Height classes (x axis) 1 = no trunk >0.6 m, 2 = no trunk 0.6–1.2 m, 3 = no trunk >1.2 m, 4 = trunk <0.5 m, 5 = trunk 0.5–1 m, 6 = trunk 1–1.5 m, 7 = trunk 1.5–2 m, 8 = trunk 2–2.5 m, 9 = trunk 2.5–3 m, 10 = trunk 3–3.5 m, 11 = trunk 3.5–4 m, 12 = trunk 4–4.5 m, 13 = trunk 4.5–5 m, 14 = trunk 5–6 m, 15 = trunk >6 m.