Electronic Theses and Dissertation

Penelitian Keanekaragaman jenis lumut di Stasiun Penelitian Ketambe belum pernah dilakukan. Penelitian ini bertujuan untuk mengetahui keanekaragaman jenis tumbuhan lumut epifit di Stasiun Penelitian Ketambe. Penelitian ini dilakukan dari bulan Desember 2022 sampai Juli 2023. Metode dalam penelitian ini adalah purposive sampling. Penelitian ini dilaksanakan di Plot Petak Ukur Permanen (PUP) Stasiun Penelitian Ketambe. Pada setiap plot berukuran 20 m x 20 m, dipilih 3 individu pohon berdasarkan banyaknya tumbuhan lumut pada pohon. Pada setiap pohon yang dipilih dibuat empat (4) sub plot berukuran 20 cm x 30 cm dengan menggunakan plastik transparant. Sub plot pertama dan kedua dibuat dari ketinggian 0-100 cm, sub plot ketiga dan keempat dibuat dari ketinggian 100-200 cm. Total sub plot dalam penelitian ini yaitu 288 sub plot. Kondisi lingkungan pada setiap lokasi penelitian dicatat, seperti suhu udara, kelembapan udara, dan intensitas cahaya. Sampel tumbuhan lumut yang ditemukan dimasukkan ke dalam amplop kertas untuk diidentifikasi. Hasil dari penelitian ini didapatkan 23 jenis lumut dari 24 plot Petak Ukur Permanen (PUP) yaitu, Syrrhopodon spiculosus, Dicranum fragilifolium, Fissidens dubius, Physcomitrella patens, Pylaisia polyantha, Himantocladium plumula, Weissia controversa, Hyophila javanica, Plagiothecium curvifolium, Thuidium delicatulum, Palekium velatum., Hymenophyton flabellatum, Cheilolejeunea trapezia, C. ceylanica, Lejeunea trinitensis, Lophocolea bidentata, Plagiochila infirma, P. junghuhniana, P. porelloides, P. propinqua, P. raddiana, P. sciophila, Radula sumatrana. Thuidium delicatulum. merupakan jenis tumbuhan lumut dengan nilai Indeks Nilai Penting tertinggi dengan nilai 50,9277 dan P. raddiana merupakan jenis tumbuhan lumut dengan nilai INP terendah yaitu 2,8910. Nilai keanekaragaman (H’) di PUP pada Stasiun Penelitian Ketambe tergolong katagori sedang dengan nilai H’ 2,7563.
Kata kunci: Indeks keanekaragaman, purposive sampling, Stasiun Penelitian Ketambe, tumbuhan lumut

Research on the diversity of moss species at Ketambe Research Station has never been done. This study aims to determine the diversity of epiphytic lichen species at Ketambe Research Station. This research was conducted from December 2022 to July 2023. The method in this study was purposive sampling. This research was conducted in the Permanent Measurement Plots (PMP) of Ketambe Research Station. In each plot measuring 20 m x 20 m, each plot was selected 3 individuals based on the number of moss plants growing on the tree. On each selected tree, four (4) sub plots measuring 20 cm x 30 cm were made using transparent plastic. The first and second subplots were made from a height of 0-100 cm, the third and fourth subplots were made from a height of 100-200 cm. The total number of sub plots in this study was 288 sub plots. Environmental conditions at each research location were recorded, such as air temperature, air humidity, and light intensity. Moss plant samples found were put into paper envelopes for identification. The results of this study obtained 23 species of lichens from 24 Permanent Measurement Plots (PMP) namely, Syrrhopodon spiculosus, Dicranum fragilifolium, Fissidens dubius, Physcomitrella patens, Pylaisia polyantha, Himantocladium plumula, Weissia controversa, Hyophila javanica, Plagiothecium curvifolium, Thuidium delicatulum, Palekium velatum., Hymenophyton flabellatum, Cheilolejeunea trapezia, C. ceylanica, Lejeunea trinitensis, Lophocolea bidentata, Plagiochila infirma, P. junghuhniana, P. porelloides, P. propinqua, P. raddiana, P. sciophila, Radula sumatrana. Thuidium delicatulum. is a moss species with the highest Important (IVI) value with a value of 50.9277 and P. raddiana is a moss species with the lowest IVI value of 2.8910. The diversity value (H') in the Permanent Measurement Plots (PMP) at Ketambe Research Station is classified as medium with a value of H' 2.7563. Keywords: Diversity index, purposive sampling, Ketambe Research Station, moss plants