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Journal : Science and Technology Indonesia

Morphological Diversity of Lansium domesticum Corr in South Sumatra Rupiah Rupiah Rupiah; Laila Hanum; Zaidan P Negara; Zulkifli Dahlan; Indra Yustian
Science and Technology Indonesia Vol. 3 No. 1 (2018): January
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (462.195 KB) | DOI: 10.26554/sti.2018.3.1.41-44

Abstract

Research on the Morphological Diversity of Lansium domesticum Corr in South Sumatra aims to examine the morphological diversity of L. domesticum in South Sumatra. The research was conducted in April 2017 to June 2017. This research was conducted by means of exploration carried out in seven districts covering, East Ogan Komering Ulu District, South Ogan Komering Ulu District, Ogan Komering Ulu District, Musirawas District, Ogan Komering Ilir District, Muara Enim District and Musi Banyuasin District. Sampling was done using purposive sampling method. Observation of morphological diversity was done by characterization of morphology and analyzed by the descriptive method. The result of this research shows that in South Sumatera, there were two variants of L. domesticum namely L. domesticum variant duku and L. domesticum variant langsat. Morphological characters that distinguish between duku and langsat variants were found under canopy conditions, the presence of hair on top and bottom surfaces of leaves, fruit shape, fruit skin thickness, fruit taste, and the presence of sap on ripe fruit.
Morphological Diversity of Rattan on The Three Conservation Areas In South Sumatera Baitika Baitika; Zulkifli Dahlan; Indra Yustian
Science and Technology Indonesia Vol. 3 No. 2 (2018): April
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2334.663 KB) | DOI: 10.26554/sti.2018.3.2.66-72

Abstract

Research on the diversity of rattan morphology has been conducted in three forest conservation areas in South Sumatra i.e. Bentayan Wildlife Reserve, Bukit Cogong and Gunung Raya Wildlife Reserve. This study aims to analyze the diversity of rattan morphology in three protected areas in South Sumatra. This research uses purposive sampling method by exploring the forest area. The results showed that in the Bentayan Wildlife Reserve area were found 3 species of 3 genera while in Bukit Cogong Protected Forest were found 9 species of 3 genera and in the Bentayan Wildlife Reserve area were found 5 species of 3 genera. The morphology of rattans species in the three regions have different shapes and colors of thorns on the stem, the top and the bottom surfaces of the leaves, the climbing organ and the growth nature. The same rattan species were being found in the same of two or three locations, having morphological differences in diameter and length of the stem.
On the Influence of Enso And IOD on Rainfall Variability Over The Musi Basin, South Sumatra Wijaya Mardiansyah; Dedi Setiabudidaya; M. Yusup Nur Khakim; Indra Yustian; Zulkifli Dahlan; Iskhaq Iskandar
Science and Technology Indonesia Vol. 3 No. 4 (2018): October
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (4342.559 KB) | DOI: 10.26554/sti.2018.3.4.157-163

Abstract

The southern Sumatera region experiences one rainy season and one dry season in a year associated with seasonal change in monsoonal winds. The peak of rainy season is occurring in November-December-January during the northwest monsoon season, while the dry season comes in June-July-August during the southeast monsoon season. This study is designed to evaluate possible influence of the coupled ocean-atmospheric modes in the tropical Indo-Pacific region, namely the El Niño-Southern Oscillation (ENSO) and the Indian Ocean Dipole (IOD) on the rainfall variability over the catchment area of the Music Basin, South Sumatera. The ENSO and IOD occurrences were reflected by the variability of sea surface temperature (SST) in the tropical Pacific and Indian Ocean, respectively. During El Niño and/or positive IOD episode, negative SST anomalies cover the eastern tropical Indian Ocean and western tropical Pacific including the Indonesian seas, leading to suppress convective activities that result in reduce precipitation over the maritime continent. The situation is reversed during La Niña and/or negative IOD event. The results revealed that the high topography area (e.g. Bukit Barisan) was shown to be instrumental to the pattern of rainfall variability. During the 2010 negative IOD co-occurring with La Niña event, the rainfall was significantly increase over the region. This excess rainfall was associated with warm SST anomaly over the eastern tropical Indian Ocean and the Indonesian seas. On the other hand, extreme drought event tends to occur during the 2015 positive IOD simultaneously with the occurrence of the El Niño events Investigation on the SST patterns revealed that cold SST anomalies covered the Indonesian seas during the peak phase of the 2015 positive IOD and El Niño event.
Co-Authors A.A. Ketut Agung Cahyawan W A.Halim PKS Aidil Fitriansyah Syukri Alamsyah Alamsyah Alamsyah Alamsyah Aldina Rahmadhani Andes Syahputra Andrios Sesa Aprilia, Ina Aprillia, Ina Aprillia, Ina Ardiyan Saptawan Arum Setiawan Arum Setiawan Arum Setiawan Arum Setiawan Arum Setiawan Arum Setiawan Atmawijaya, Yusni Baitika Baitika Benny Hidayat Catur Yuono Prasetyo Catur Yuono Prasetyo, Catur Yuono Dahlan, Zulkifli Dahlan, Zulkifli Dahlan Dede Fadli, Dede Dedek Kurniawan Dedi Setiabudidaya Deviani Salaki, Larissa Doni Setiawan Dwi Puspa Indriani Eddy Ibrahim Eddy Ibrahim Eddy, Syaiful Enggar Patriono Enggar Patriono, Enggar EPSB Taman Tono Ermanovida Ermanovida Erwin, Suendi FAUZIYAH Fauziyah Fauziyah Fauziyah Fauziyah Fitri Agustriani Harmoko Harmoko Harmoko Harmoko, Harmoko Hartoni Hartoni Hilda Zulkifli Hilda Zulkifli INA APRILLIA Indrianti, Winda Indriati, Winda Intan Qaanitah Iskhaq Iskandar Laila Hanum Melto Sevli, Melto Milatun Nikmah Mokhamad Yusup Nur Khakim Muhammad Iqbal Muhammad Iqbal Muhammad Iqbal Mustafa Kamal Nadya Rahmania, Nadya Negara, Zaidan Panji Ningsih, Ellis Nurjuliasti Nur AP Sari Nurjuliasti Ningsih, Ellis Pavel Kirillov Pirnanda, Dafid Pormansyah Pormansyah Pragustiandi, Guntur Rezi Apri Ridwan, Alex Rio Firman Saputra, Rio Firman Rizky Hidayat Rupiah Rupiah Rupiah Samitra, Dian Sepriyaningsih Sepriyaningsih Sepriyaningsih, Sepriyaningsih Setiono Setiono Sri Rahayu Suci Suci Suci Suci Suci Suci, Suci Syaiful Eddy Travolindra, Yoga Wenny Saptalisa, Wenny Wijaya Mardiansyah Wike Ayu Eka Putri Yeani Rismayanti Yuanita Windusari Yundari, Yundari Zahrial Effendi Zaidan P Negara Zazili Hanafiah Zulkifli Dahlan Zulkifli Dahlan Zulkifli Dahlan Zulkifli Dahlan Zulkifli Dahlan