| dc.description.abstract | Sumatran liverworts, especially the North Sumatra, are less well known than the
liverworts in Java and other region of Malesia. A study on liverworts has been
conducted at Mount Sibuatan, North Sumatra, to provide data and a list of the
biodiversity and to determine the species distribution. Specimens were collected
using exploratory survey by exploring along the hiking trail from an altitude of 1536
to 2454 m.a.s.l. Sampling was carried out at each sampling point as many as 60
points (range 10-20 m) on the hiking trail which was 100 m away from each point.
The study documented a total of 84 liverwort species from Mount Sibuatan, included
in 24 genera and 9 families. Two species were new records for Sumatra, namely
Drepanolejeunea pentadactyla and Radula verrucosa. The largest family is
Lejeuneaceae (12 genera and 26 species), accounting for 31% of the total species.
The second largest family is Lepidoziaceae (2 genera and 19 species), followed by
Plagiochilaceae (3 genera and 18 species), and Radulaceae (1 genera and 9
species). Mount Sibuatan liverworts are found on various substrates. Majority of
species were epiphytes (grew on bark or branches), terrestrial (ground), on rotting
logs, and epiphyll (living leaves). Liverwort species at Mount Sibuatan (28 species)
are found in a wide range of elevations, from lower montane forest to upper montane
forest. Fifty-four species were confined to lower montane forest and 1 species was
restricted to upper montane forest. | en_US |
