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PENGARUH JENIS MEDIA DAN ZAT PENGATUR TUMBUH ATONIK TERHADAP PERKECAMBAHAN SPORA DAN PEMBENTUKAN SPOROFIT Lygodium circinnatum (Burm.f.) Sw. (SCHIZAEACEAE) Siregar, Mustaid; Ardaka, I Made; Siregar, Hartutiningsih M
Buletin Kebun Raya Vol 17, No 1 (2014): Buletin Kebun Raya Vol. 17 (1) Januari 2014
Publisher : Center for Plant Conservation Bogor Botanic Garden, Indonesian Institute of Sciences

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Lygodium circinnatum (Burm.f.) Sw. adalah sejenis paku merambat (Schizaeaceae) yang batangnya banyak digunakan sebagai bahan untuk industri kerajinan tangan. Belakangan ini pasokan bahan bakunya mengalami penurunan akibat menurunnya populasi di alam. Tumbuhan ini belum dibudidayakan, sehingga perlu dilakukan tindakan konservasi termasuk upaya perbanyakannya. Penelitian ini bertujuan untuk mengetahui pengaruh jenis media dan Atonik terhadap perkecambahan spora dan pembentukan sporofit L. circinnatum. Dua jenis media yang diuji adalah: a) lumpur sawah dan b) campuran akar kadaka dan bubuk batu bata. Penelitian dilakukan di dalam rumah kaca menggunakan rancangan acak lengkap. Hasil penelitian menunjukkan bahwa media lumpur sawah secara signifikan berpengaruh terhadap perkecambahan dan pembentukan sporofit, tetapi harus diikuti dengan upaya penjarangan pada sporofit. Tingginya kepadatan sporofit dapat menghambat pertumbuhan gametofit menjadi sporofit. Penggunaan media lumpur sawah yang diberi Atonik pada konsentrasi 1,5 ml l-1 dapat disarankan untuk perkecambahan dan pembentukan sporofit L. circinnatum.

PENGARUH JENIS MEDIA DAN ZAT PENGATUR TUMBUH ATONIK TERHADAP PERKECAMBAHAN SPORA DAN PEMBENTUKAN SPOROFIT Lygodium circinnatum (Burm.f.) Sw. (SCHIZAEACEAE) Siregar, Mustaid; Ardaka, I Made; Siregar, Hartutiningsih M
Buletin Kebun Raya Vol 17, No 1 (2014): Buletin Kebun Raya Vol. 17 (1) January 2014
Publisher : Center for Plant Conservation Bogor Botanic Garden, Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar

Lygodium circinnatum (Burm.f.) Sw. adalah sejenis paku merambat (Schizaeaceae) yang batangnya banyak digunakan sebagai bahan untuk industri kerajinan tangan. Belakangan ini pasokan bahan bakunya mengalami penurunan akibat menurunnya populasi di alam. Tumbuhan ini belum dibudidayakan, sehingga perlu dilakukan tindakan konservasi termasuk upaya perbanyakannya. Penelitian ini bertujuan untuk mengetahui pengaruh jenis media dan Atonik terhadap perkecambahan spora dan pembentukan sporofit L. circinnatum. Dua jenis media yang diuji adalah: a) lumpur sawah dan b) campuran akar kadaka dan bubuk batu bata. Penelitian dilakukan di dalam rumah kaca menggunakan rancangan acak lengkap. Hasil penelitian menunjukkan bahwa media lumpur sawah secara signifikan berpengaruh terhadap perkecambahan dan pembentukan sporofit, tetapi harus diikuti dengan upaya penjarangan pada sporofit. Tingginya kepadatan sporofit dapat menghambat pertumbuhan gametofit menjadi sporofit. Penggunaan media lumpur sawah yang diberi Atonik pada konsentrasi 1,5 ml l-1 dapat disarankan untuk perkecambahan dan pembentukan sporofit L. circinnatum.

PENCAPAIAN KEBUN RAYA INDONESIA DALAM TARGET 8 GLOBAL STRATEGY FOR PLANT CONSERVATION (GSPC) Purnomo, Danang Wahyu; Hendrian, R.; Witono, Joko Ridho; Kusuma, Yayan Wahyu Candra; Risna, Rosniati Apriani; Siregar, Mustaid
Buletin Kebun Raya Vol 13, No 2 (2010): Buletin Kebun Raya Vol. 13 (2) July 2010
Publisher : Center for Plant Conservation Bogor Botanic Garden, Indonesian Institute of Sciences

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Target 8 of the Global Strategy for Plant Conservation (GSPC) has a very close link to the works of botanic gardens. It highlights the importance of ex situ collections of threatened plants and their recovery programme. The aim of this paper was to present the Indonesian Botanic Gardens achievements in implementing Target 8 of the GSPC. It is shown that to date 21.5% of Indonesian threatened plants have already been collected ex situ in Indonesian Botanic Gardens. The reintroduction programme was also initiated. In its 14th meeting this year, SBSTTA recommended proposal for an updated GSPC (for 2011-2020), in which the Target 8 was changed to "At least 75 per cent of threatened plant species in ex situ collections" (from formerly 60 per cent). Thus, further work is still needed to increase these achievements.

Floristic and Forest Structural Study in Batangtoru Watershed, North Sumatra Sambas, Edy Nasriadi; Siregar, Mustaid
JURNAL BIOLOGI INDONESIA Vol 13, No 1 (2017): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

ABSTRACTA Forest ecology research has been done in Batangtoru watershed, North Sumatra to determine the speciesÂ composition and vegetation structure. The study was conducted by using plots in four locations: Purnama,Gerhana, Kejora, and Teluk Nauli. A total of 387 species in 184 genera and 77 families were found. TheÂ species richness of trees (dbh >10 cm) was 192 species in 116 genera and 55 families, the richness of saplings(dbh 2 - 10 cm) was 211 species in 111 genera and 55 families, while the richness of seedlings (dbh <2 cm)Â was 153 species in 95 genera and 50 families. Tree density ranged from 850â1,700 individuals/ ha, while basalarea was around 66.76 to 104.54 m2/ha. The forest canopy at Purnama and Gerhana plots was relatively similar,Â forming three layers, while the Kejora and Teluk Nauli plots were simpler with only two canopy layers. Basedon a principal components analysis of tree species, the forests in the research area tended to form threeÂ community types: 1) forest dominated by Pentaphylacaceae, 2) mixed dipterocarp forest, and 3) forest garden,or natural forest communities enriched with a variety of economically valuable forest tree species andÂ therefore classified as an agroforestry system.Keywords : Floristic, structure, forest community type, Batangtoru watershed, North Sumatra

PENGARUH VARIASITOPOGRAFIMIKRO TERHADAP VEGETASI HUTAN GAMBUT DI BENGKALIS, RIAU Siregar, Mustaid
BERITA BIOLOGI Vol 6, No 3 (2002)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Peat forest vegetation in Bengkalis, Riau Province was studied using plot method. Two plots of 60 m x 40 m were placed at two locations which were different in peat physical condition (Plot 1: hemofibric, > 4 m deep, inundated; and Plot 2: hemosapric, 3 m deep, rarely inundated). The results showed that there were 79 species (diameter > 2 cm) included 49 species of trees (dbh > 10 cm) and 52 species of saplings (diameter 2-9,9 cm). Total number of species in plot 1 was higher (55 species; index diversity- H=3.048) than that of plot 2 (39 species; H=2.606), but, density and total basal area in plot 1 was lower than that of plot 2. Species similarity index in both plots was 19%.The most dominant tree species in plot 1 were Baccaurea macrocarpa, Ficus sp. and Palaquium hexandrum, whereas in plot 2 were Calophyllum soulattri, Ganua motleyana and Palaquium burckii. The influence of physical and peat soil nutrient on structure and species composition will be discussed in this paper.

IMPACTS OF DRY SEASON AND FOREST FIRE 1997-1998 EPISODES ON MIXED DIPTEROCARP FOREST AT BUKIT BANGKIRAI, EAST KALIMANTAN [Pengaruh Musim Kering dan Kebakaran Hutan Episode 1997-1998 Terhadap Hutan Dipterocarp Campuran di Bukit Bangkirai, Kalimantan Timur] Simbolon, Herwint; Siregar, Mustaid; Wakiyama, Seiji; Sukigara, Naozumi; Abe, Yasuhisa; Shimizu, Hideyuki
BERITA BIOLOGI Vol 6, No 6 (2003)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Kawasan Kalimantan Timur mengalami musim kemarau panjang yang merangsang terjadinya kebakaran hutan yang luas pada 1982-1983 dan 1997-1998.Naskah ini mengemukakan hasil penelitian di Bukit Bangkirai, Kalimantan Tengah mengenai dampak dari kemarau panjang dan kebakaran hutan 1997-1998 terhadap diversitas tumbuhan pohon hutan dipterokarp campuran.Penelitian dilakukan dengan cara memperbandinkan hasil pencacahan tumbuhan pohon berlingkar batang setinggi dada lebih daripada 15cm yang terdapat dalam tiga petak penelitian, masing-masing: lha di hutan alam yang tidak terbakar (K-plot), 0,3 ha di hutan yang terbakar ringan (LD) dan lha di hutan yang terbakar berat (HD).Hasil penelitian menunjukkan bahwa musim kemarau panjang 1997-1998 menyebabkan 12,02% mortalitas individual pohon di hutan alam yang tidak terbakar, yang terlihat dari pohon mati berdiri tegak akibat kekeringan, atau kehilangan 21,67% dari total basal area. Secara keseluruhan terlihat bahwa kebakaran hutan menyebabkan kerusakan berat terhadap struktur dan komposisi hutan. Secara kumulatif, kemarau panjang dan kebakaran hutan menyebabkan mortalitas individual pohon berkisar 36-70% dan kehilangan total basal area antara 45-85% dan menyebabkan lantai hutan terbuka terhadap penyinaran matahari langsung karena menurunnya penutupan tajuk sebesar 23-79%.Kebakaran hutan juga berdampak terhadap penurunan biodiversitas tumbuhan pohon sebesar 23-79% pada tingkat jenis, 53-66% pada tingkat marga dan 18-21% pada tingkat suku.Tercatat perubahan komposisi jenis pada hutan yang terbakar; dominasi jenis Dipterocarpaceae dipetak hutan tak terbakar (K) menjadi dominasi pionir sekunder Macaranga gigantea-Vernonia arborea di petak terbakar berat (HD) dan dominasi Macaranga gigantea-Shorea smilhiana di petak terbakar ringan (LD).Beberapa jenis seperti Durio acutifolius dan Syzygium incarnaium mungkin dapat digolongkan sebagai jenis yang relative lebih tahan terhadap api.

PERBANDINGAN VEGETASI TUMBUHAN BAWAH DI BAWAH EMPAT JENIS TEGAKAN HUTAN TANAMAN DI CANDIKUNING, BALI SIREGAR, MUSTAID
BERITA BIOLOGI Vol 3, No 7 (1987): (Supplement)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

MUSTAID SIREGAR. 1987.The comparison of ground vegetation under four forest plantations in Candikuning, Bali. Suppl. BeritaBiologi. 3: 45-50.The ground vegetation under four forest plantations of different species in Candikuning (Altingia excelsa, Manglietia glauca, Agathis dammara, Pinus merkusiij have been investigated by using quadrat method. The results showed that the highest index of similarity was 53,06% between A. dammara and P. merkusii plantations, and the lowest index of similarity was 18,21% between A. excelsa and P. merkusii plantations. The species composition and community stability of these ground vegetations under "each plantation differed. The community of ground vegetation under A.excelsa plantation was more diverse and stable than the others. The ground vegetation under M. glauca, A.dammara and P.merkusii plantations were dominated by herbs, while under A. excelsa plantation were dominated by seedling of trees, that originated from A. excelsa stand and others surrounding tree species.

VEGETASI ALAMI DAN PERUBAHANNYA SETELAH 22 TAHUN (1986 - 2008) DI HUTAN TANAMAN Altingia excelsa Noronha CANDIKUNING-BALI Siregar, Mustaid; Undaharta, Ni Kadek Erosi
BERITA BIOLOGI Vol 13, No 2 (2014)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Research at the three locations of Altingia excelsa Noronha plantations in Candikuning, Bali has been carried out to examine the changes in vegetation that grows naturally in the low layer after 22 years (1986 -2008). The results showed that 40 species of seedling, and 4 species of shrubs and young trees were found in three plots of the plantation forest. Compared to the results of the previous study, 22 years before the present study (1986), species richness was decreased dramatically accompanied by changes in species composition. Crown cover of herbs group were decreased, but shrubs and young trees were increased except for the plot 1938 due to edge effects. Lightdemanding species were disappeared and replaced by shaded-tolerant species. The primary tree species which are commonly found in the surrounding natural forest and previously found in research plots had been disappeared, and replaced by late secondary tree species, and seedlings of A. excelsa which is actually animmigrant species. Succession under the plantation forest of A. excelsa are generally slow.

FITOSOSIOLOGI HUTAN DL KAWASAN PENYANGGA DANAU SEMAYANG DAN MELINTANG, KALIMANTAN TIMUR Siregar, Mustaid
BERITA BIOLOGI Vol 4, No 1 (1997)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v4i1.1292

This study was aimed at describing the forest types and their degradation at buffer zone of Semayang and Melintang lakes,East Kalimantan.The study was carried out in October 1994 by plot method.Within twenty five main plots, 108 tree species belongs to 75 genera and 38 families were recorded.Ouster analysis shows, the plots have high variation in species.By 50 % similarity index,there could be identified five communities (units)in peat swamp forest,eleven units in riparian forest and two units in kerangas forest.Structure, floristic composition and their degradation of communities at each forests are discussed.

FLORISTIC AND FOREST STRUCTURAL STUDY IN BATANGTORU WATERSHED, NORTH SUMATRA Sambas, Edy Nasriadi; Siregar, Mustaid
JURNAL BIOLOGI INDONESIA Vol 13, No 1 (2017): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v13i1.3091

ABSTRACTA Forest ecology research has been done in Batangtoru watershed, North Sumatra to determine the species composition and vegetation structure. The study was conducted by using plots in four locations: Purnama,Gerhana, Kejora, and Teluk Nauli. A total of 387 species in 184 genera and 77 families were found. The species richness of trees (dbh >10 cm) was 192 species in 116 genera and 55 families, the richness of saplings(dbh 2 - 10 cm) was 211 species in 111 genera and 55 families, while the richness of seedlings (dbh <2 cm) was 153 species in 95 genera and 50 families. Tree density ranged from 850?1,700 individuals/ ha, while basalarea was around 66.76 to 104.54 m2/ha. The forest canopy at Purnama and Gerhana plots was relatively similar, forming three layers, while the Kejora and Teluk Nauli plots were simpler with only two canopy layers. Basedon a principal components analysis of tree species, the forests in the research area tended to form three community types: 1) forest dominated by Pentaphylacaceae, 2) mixed dipterocarp forest, and 3) 'forest garden',or natural forest communities enriched with a variety of economically valuable forest tree species and therefore classified as an agroforestry system.Keywords : Floristic, structure, forest community type, Batangtoru watershed, North Sumatra

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