| dc.description.abstract | JOHANA FIORETTY BOANGMANALU. Species Diversity, Distribution
Patterns, Associations of Kantong Semar (Nepenthes sp.) around the Sicike Cike
Nature Tourism Park Lake, supervised by MOEHAR MARAGHIY HARAHAP
and RIDAHATI RAMBEY.
Kantong Semar are carnivorous plants that play an important role in the
ecosystem. These plants have the ability to catch insects that help control pests and
support environmental balance. The many types of Kantong Semar in North
Sumatra, especially in the Sicike Cike Nature Tourism Park, have not been
explored, so research is needed on these species. This study aims to analyze the
diversity of species, distribution patterns, and associations of Kantong Semar
(Nepenthes sp.) around the lakes of the Sicike Cike Nature Tourism Park, North
Sumatra. The method used was purposive sampling at three lake locations (Lakes
I, II, and III), with measurements of ecological parameters such as humidity,
temperature, soil pH, and vegetation analysis using the Shannon-Wiener diversity
index, dominance, evenness, morisita, and association. The results showed that
there were three species of Nepenthes, namely N. tobaica, N. spectabilis, and N.
rhombicaulis. The distribution patterns of N. tobaica and N. spectabilis tended to
be clustered, while N. rhombicaulis was randomly distributed. The diversity index
is relatively low (H' < 1), with high dominance in Lake II and the highest evenness
in Lake III. A positive association was found between Nepenthes sp. and lower
vegetation such as ferns and pandan. This finding indicates that the condition of
the habitat and surrounding vegetation greatly influences the presence and
distribution of Kantong Semar (Nepenthes sp.). | en_US |
