Floristic Composition of Groundcover Vegetation after
the 2010
Pyroclastic Fire on Mount Merapi
SUTOMO & DINI FARDILA
1Bali Botanic Garden, Indonesian Institute
of Sciences (LIPI)
Candikuning, Baturiti, Tabanan, Bali 82191
ABSTRACT
Mount
Merapi with its Merapi-type pyroclastic flows provides burnt and unburnt areas
which are excellent to study establishment events of pioneer plant species.
Using site comparison approach, floristic composition was studied, and thus one
area that was burnt by pyroclastic flows in 2010 (Kalikuning) and one area that
is relatively intact or unburnt (Kaliurang) was chosen as study sites. We found
7,817 individuals belonging to 72 species and 36 families in the burnt site,
and 4,093 individuals belonging to 79 species and 39 families in the unburnt
site. The most important family as determined by the Family Importance Value
(FIV) was Rubiaceae in Kalikuning and Asteraceae in Kaliurang. In terms of
Importance Value Index (IVI), Borreria
occimoides (Rubiaceae) and Eupatorium
riparium (Asteraceae) were the most important species in Kalikuning and
Kaliurang, respectively. Multivariate approach using Non-metric
Multidimensional Scaling ordination technique showed that floristic composition
in the newly burnt site were different with those that occupying the intact
site (RANOSIM = 0.72). Borreria occimoides, Eupatorium riparium, Athyrium
dilatatum, Paspalum conjugatum, Brachiaria reptans and Selaginella
doederleinii were the species mainly responsible in
explaining the differences between sites.
Keywords: Plant establishment, composition,
diversity, secondary succession, Mount Merapi
Jurnal Manajemen Hutan Vol. XIX, (1): 54-62, April 2013
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