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All Journal Jurnal Bios Logos Jurnal Ilmu Dasar Jurnal Lahan Suboptimal Jurnal Forum Nuklir BERKALA SAINSTEK Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Biocelebes BERITA BIOLOGI Akuatik: Jurnal Sumberdaya Perairan PROMINE AGROSAINSTEK: Jurnal Ilmu dan Teknologi Pertanian Teknologi Indonesia Floribunda BIO-EDU: Jurnal Pendidikan Biologi EKOTONIA: Jurnal Penelitian Biologi, Botani, Zoologi dan Mikrobiologi Journal of Tropical Ethnobiology Berkala Penelitian Hayati Jurnal Riset Multidisiplin Edukasi

Eddy Nurtjahya

Universitas Bangka Belitung

Author-ID : 829708

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Education Engineering Environmental Science Immunology & microbiology Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Physics Social Sciences Other

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Deteksi Perubahan Tutupan Lahan Menggunakan Citra Landsat ETM (Enhanced Thematic Mapper) Multi Temporal di Pesisir Utara Pulau Mendanau dan Pulau Batu Dinding, Kabupaten Belitung Irma Akhrianti; Franto Franto; Eddy Nurtjahya; Indra Ambalika Syari
Akuatik: Jurnal Sumberdaya Perairan Vol 12 No 1 (2018): Akuatik: Jurnal Sumberdaya Perairan
Publisher : Department of Aquatic Resources Management, Faculty of Agriculture, Fisheries, and Biology, University of Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1187.733 KB)

Land cover changes is a physical impact which caused by the the existence of human activity that is quite high in parts of the lithosphere of the earth. The change in landscape certainly has a positive correlation with the dynamics of land use in an area, so that regular monitoring needs to be done, because often land use occurs out of control and not even in accordance with its designation. The main problems that occur in Mendanau Isalnd and Batu Dinding Island are the high level of utilization of mangrove ecosystems, the conversion of mangrove land into ecotourism areas, ports area, residental area and mining area (bauxite). This study aims to monitor changes in land cover in the northern coastal areas of Mendanau Island and Batu Dinding Island in Belitung Regency for 6 years (2000, 2002, and 2006) using a remote sensing technology approach, where image data processing refers to a guided classification method combined with check the field. The satellite images used are still classified as low resolution, namely Multitemporal ETM satellite images with ± 10% cloud cover rate. The results showed that, found 6 land cover classes, namely settlement, open land, mangrove vegetation, non-mangrove vegetation, marine waters, and clouds, which can be detected there has been a change in the increase in the area of non-mangrove vegetation by 365.47 ha, while residential areas experienced fluctuating conditions, namely an increase in cover area in 2000-2002 around 111.94 ha, then declined again in 2006 amounting to 61.28 ha. Unlike the case with the area of open land cover and cover of mangrove vegetation which tends to decrease. The area of open land cover in 2000-2002 decreased by 16.96 ha, then declined again in 2006 by 32.32 ha. The cover area of mangrove vegetation in 2000-2002 decreased by 69.5 ha, then decreased again in 2016 amounting to 208.82 ha.

Analisis Kandungan Logam pada Tumbuhan Dominan di Lahan dan Kolong Pasca Penambangan Timah Bangka Selatan Eka Sari; Dyah Sandra Fiona; Nuril Hidayati; Eddy Nurtjahya
PROMINE Vol 5 No 2 (2017): PROMINE
Publisher : Jurusan Teknik Pertambangan, Fakultas Teknik, Universitas Bangka Belitung

Besides to impact on changing of landscape and biodiversity, tin mined left heavy metal contaminants,and phytoremediation (the use of plants to accumulate heavy metals) is a chosen method. This studymeasures Pb (Lead), Cu (Copper), Zn (Zinc) in soil and dominant terestrial plants in tin mined landand Fe (Iron), Al (Aluminum), As (Arsen) in root and shoot of dominant plants in ex-tin mined pond.Dominant species was determined by vegetation analysis of quadrate method. Metals analysis wasconducted using atomic absorption spectrophotometry. Pb in secondary forest (8 ppm), in revegetatedtin mined soil (10,80 ppm) and in 0 year abandoned tin mined soil) (20,70 ppm) exceed qualitystandards. There is no potential of becoming accumulator plant for Pb, Cu, Zn in tin mined land, butSchima wallichii was found potential to be Cu accumulator in secondary forest because it hastranslocation factor (TF)>1. The highest Fe > 2% in shoot and > 3% in roots. Al > 2% in shoot and >3% in root. As was not detected.Keywords: Tin mined soil, Bangka, Metal, Accumulator plants

OBAT TRADISIONAL PENINGKAT IMUNITAS TUBUH ETNIS KARO, KECAMATAN SINEMBAH TANJUNG MUDA HULU Ayu Natalia BR Tarigan; Eddy Nurtjahya; T Alief Aththorick
Biocelebes Vol. 16 No. 1 (2022)
Publisher : Biology Department, Mathematics and natural science, Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/bioceb.v16i1.15832

Tumbuhan berkhasiat obat sudah sejak lama dimanfaatkan oleh masyarakat Etnis Karo, Kecamatan Sinembah Tanjung Muda Hulu sebagai alternatif pencegahan dan penyembuhan penyakit. Penggunaan obat tradisional sebagai alternatif pengobatan lebih banyak dibanding pengobatan secara medis. Penelitian ini bertujuan untuk mengetahui pengetahuan, kepercayaan akan khasiat obat, jenis tumbuhan, bagian tumbuhan yang digunakan, jenis ramuan, cara pengolahan, dan nilai index of cultural significance (ICS) bahan baku yang digunakan. Penelitian ini menggunakan metode wawancara semistruktur untuk responden umum, dan wawancara bebas untuk informan kunci. Dari hasil penelitian, responden dengan kategori usia dewasa hingga tua memiliki pengetahuan dan kepercayaan yang lebih tinggi dalam penggunaan obat tradisional. Sebelas jenis ramuan obat tradisional diperoleh baik yang disajikan secara tunggal dan campuran yang berasal dari 36 jenis tumbuhan dari 21 famili. Bagian tumbuhan paling sering digunakan adalah daun, dan nilai ICS tertinggi (178) adalah jahe. Tumbuhan obat diramu dengan direbus, digiling, atau dikeringkan.

Induksi Kalus Sisik Umbi Lilium longiflorum Thunb. oleh Auksin dan Sitokinin, serta Respons Pertumbuhannya Secara In Vitro: Induksi Kalus Sisik Umbi Lilium longiflorum Thunb. oleh Auksin dan Sitokinin, serta Respons Pertumbuhannya Secara In Vitro Yeni Ekawati; Anggraeni Anggraeni; Apriliana Dyah Prawestri; Eddy Nurtjahya
AGROSAINSTEK: Jurnal Ilmu dan Teknologi Pertanian Vol 6 No 2 (2022): AGROSAINSTEK: Jurnal Ilmu dan Teknologi Pertanian
Publisher : Universitas Bangka Belitung

Lilium longiforum Thunb.is a potential ornamental plant that has been developed in several indusrtry, such as pharmaceutical industry and floriculture industry. Generative propagation of L. longiflorum is difficult and more effective when propagated asexually through tissue culture techniques. This research aimed to analyze callus induction from L. longiflorum bulb scale and its growth response to the addition of auxin and cytokinin in culture media. This research were tested in two treatments: MS + 3.0 mg L-1 2.4-D + 0.5 mg L-1 BAP, incubated in dark condition for 24 hours (treatment 1) and MS + 1.5 mg L-12.4-D + 1.0 mg L-1BAP, photoperiod 16/8 h (treatment 2). Furthermore, calli were planted on regeneration media (MS + 3.4 mg L-1BAP + 0.09 mg L-1NAA). The result showed that explant in treatment 2 (MS + 1.5 mg L-12.4-D + 1.0 mg L-1BAP, photoperiod 16/8 hours dark/light) is more responsive than treatment 1 on callus induction and subculture treatment. This treatment also produced good quality of calli which were shown in a compact texture, yellowish green colour and 100% survived. Regeneration media succeeded in regenerating calli into indirect shoots by 100%, even though no direct shoots and roots were found in this experiment. This research suggest that treatment 2 can used as an effective protocol on developing L. longiflorum.

Bioekologi Nyamuk Culex (Diptera: Culicidae) di Kecamatan Jebus Kabupaten Bangka Barat Atika Rukmana; Eddy Nurtjahya; Awit Suwito
EKOTONIA: Jurnal Penelitian Biologi, Botani, Zoologi, dan Mikrobiologi Vol 7 No 1 (2022): Ekotonia: Jurnal Penelitian Biologi, Botani, Zoologi dan Mikrobiologi
Publisher : Department of Biology, Faculty of Agriculture, Fisheries and Biology, University of Bangka Belitung

Bangka and Belitung region has under 887 collong consisting of 544 under the island of Bangka, and as many as 343 underneath Belitung Island. It has the potential to become a mosquito breeding location in West Bangka, the highest rate of illness with mosquito vector (malaria, DBD, filariasis) is owned by Jebus District. Allegedly this is related to the location of residential communities close to under. The purpose of this research is to know the diversity and bioecology of Culex mosquito in Jebus Subdistrict, West Bangka Regency. This research was conducted in November 2016 - June 2017. This research is an explorative research consisting of several activities, namely: 1) Habitat Observation, 2) Mosquito Sampling, 3) Larvae Maintenance, 4) Mosquito Identification, and 5) Data Analysis . Based on the results of this study found at least 10 types of Culex mosquitoes in Jebus District. Ten types are Cx. nigropunctatus, Culex sp, Cx. quinquefaciatus, Cx. pseudovishnui, Cx. mimulus, Cx. sitiens, Cx. fuscocephala, Cx. hutchinson, Cx. foliatus, Cx. tritaeniorhynchus. The highest relative abundance value in the three species is Cx. quinquefaciatus (0.29%), Cx. nigropunctatus (0.16%), Culex sp. (0.18%). Cx. quinquefasciatus has a blood-sucking peak at 18:00 to 19:00, 20.00.21.00 and 23.00-24.00.

Bioekologi Nyamuk Armigeres, Mansonia, Aedes, Anopheles dan Coquilletidia (Diptera: Culicidae) di Kecamatan Jebus Kabupaten Bangka Barat Sarlinda Sari; Eddy Nurtjahya; Awit Suwito
EKOTONIA: Jurnal Penelitian Biologi, Botani, Zoologi, dan Mikrobiologi Vol 7 No 1 (2022): Ekotonia: Jurnal Penelitian Biologi, Botani, Zoologi dan Mikrobiologi
Publisher : Department of Biology, Faculty of Agriculture, Fisheries and Biology, University of Bangka Belitung

Bangka Belitung is one of the provinces in Indonesia that is endemic to the disease transmitted exclusively by mosquitoes, such as filariasis, dengue hemorrhagic fever (DHF) and malaria. Limitations of information on risk factors of filariasis and dengue hemorrhagic fever (DHF), mosquito bioecology, and the endemic environment, it has not obtained specific and efficient ways in disease control. This research aims to reveal biodiversity and mosquito bioecology in Jebus District, West Bangka Regency. This research is an explorative one. Collections of adult mosquitoes mostly obtained Armigeres subalbatus (59 individuals). Totally 115 individuals of mosquitoes collected in Jebus District were 115 individuals consisting of genera Armigeres (Ar. subalbatus, Ar. malayi, and Ar. moultoni), Mansonia (Ma. dives and Ma. annulata), Aedes (Ae. aegypti, Ae. albopictus and Aedes sp.), Coquillettidia (Coquillettidia ochracea) and Anopheles (An. letifer). Collecting of larvae stage obtained two species of mosquitoes i.e. Aedes aegypti and Aedes albopictus, which were found in the water / drum shelter, bathtub, used bottles and the ex-tin mined pond.

Karakter Bakteri Azotobacter dan Azospirillum dari Rizosfer Tanaman Lada di Lahan Bekas Tambang Timah Novalia lia; Eddy Nurtjahya; Ratna Santi; Eka Sari
JURNAL BIOS LOGOS Vol. 12 No. 1 (2022): JURNAL BIOS LOGOS
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/jbl.v12i1.34960

The negative impact of tin mining is that it can decrease the productivity of land functions for plant growth. Efforts to improve the soil that can be offered biologically by obtaining potential microbes such as Azotobacter and Azospirillum bacteria. This study aims to count up the population and to isolate and characterize Azotobacter and Azospirillum bacteria of pepper crop rhizosphere in ex-tin mined soil. The research site is Air Duren Village, Bangka Regency and Mesu Village, Central Bangka Regency. The research methods used are soil sampling, isolation, morphological and physiological characterization of biochemistry. The results showed the highest number of Azotobacter and Azospirillum bacterial populations found in the location of Mesu Village. Also obtained seven isolates that lead to the genus Azotobacter with isolate codes TMT6U3, TMT6U2, TST6U1, TST6U3, TMT7U3 and genus Azospirillum isolate code TST5U1, TST6U2 which are gram rods negative bacteria. The seven isolates show resistant to heavy metal Pb, not pathogen to plants, animals and humans. Keywords: Azotobacter and Azospirillum bacteria; pepper; ex tin-mined soilÂ AbstrakDampak negatif dari penambangan timah yaitu dapat menurunkan produktivitas fungsi lahan bagi pertumbuhan tanaman. Upaya perbaikan tanah yang dapat ditawarkan yaitu secara biologi dengan mendapatkan mikroba potensial seperti bakteri Azotobacter dan Azospirillum. Penelitian ini bertujuan menghitung jumlah populasi dan mengkarakterisasi bakteri Azotobacter dan Azospirillum asal rizosfer tanaman lada di lahan bekas tambang timah. Lokasi penelitian ini adalah Desa Air Duren, Kabupaten Bangka dan Desa Mesu, Kabupaten Bangka Tengah. Metode penelitian yang digunakan yaitu pengambilan sampel tanah, isolasi, karakterisasi morfologi dan fisiologis biokimia. Hasil penelitian menunjukkan jumlah populasi bakteri Azotobacter dan Azospirillum tertinggi terdapat pada lokasi Desa Mesu. Dari hasi penelitian juga diperoleh tujuh isolat yang mengarah pada genus Azotobacter dengan kode isolat TMT6U3, TMT6U2, TST6U1, TST6U3, TMT7U3 dan genus Azospirillum kode isolat TST5U1, TST6U2 yang merupakan bakteri Gram negatif berbentuk batang. Ketujuh isolat tersebut menunjukkan bakteri resisten terhadap logam berat Pb, tidak patogen terhadap tumbuhan, hewan dan manusia.Kata kunci: bakteri Azotobacter dan Azospirillum; lada; lahan bekas tambang timah

Keragaman dan Kekerabatan Macaranga Pulau Bangka Nurtjahya, Eddy; Rani, Melia Panca; Ardiyani, Marlina
EKOTONIA: Jurnal Penelitian Biologi, Botani, Zoologi, dan Mikrobiologi Vol 8 No 2 (2023): Ekotonia: Jurnal Penelitian Biologi, Botani, Zoologi dan Mikrobiologi
Publisher : Department of Biology, Faculty of Agriculture, Fisheries and Biology, University of Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/ekotonia.v8i2.4876

Macaranga Thou. (Euphorbiaceae) is the largest genus which is known as a pioneer on disturbed land due to mining, agriculture, and settlements. The study aims to record diversity and analyze Macaranga relationships on Bangka Island and compare them with those in the Sundaland region. It was carried out in July – Desember 2018 in four habitat types: hills, lowland forest, peat swamp forest, and open land, with each in five different villages. Specimens were identified with the collections of Herbarium Bangka Belitungense and Herbarium Bogoriense. Leaf samples for molecular tests used the teabag method, DNA analysis with a combination of primers ITS4 and ITS5, and analysis using Maximum Likelihood. The five species documented are M. bancana, M. gigantea, M. javanica, M. pruinosa, and M. trichocarpa. All species grow mostly in lowland forests and hill forests, M. pruinosa is only found in peat swamp forests. M. bancana and M. pruinosa are closely related to Macaranga in the Malay Peninsula, M. trichocarpa is close to the species in Borneo, while M. javanica is not known to be related to either the Malay Peninsula or Borneo because there are no comparable sequences. M. gigantea does not show strong genetic differences from the Malay Peninsula or Borneo.

Stomata of Grass in The Ex Tin-Mining Land in Bangka Savira, Savira; Nurtjahya, Eddy; Santi, Ratna
Jurnal ILMU DASAR Vol 24 No 1 (2023)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/jid.v24i1.19435

Tin-mined land experiences drought, high light intensity, and temperature which is less supportive of plant growth. The study observed the anatomical responses of grasses leaves. This study aims to measure stomatal density, stomatal index, guard cell length, and guard cell width of three grass species that grow naturally in ex tin-mined land and in undisturbed land. Description method carried out based on the paradermal incision resulted in the wholemount method. The results showed each grass species has a different response to their different habitats. The stomatal density of Imperata cylindrica and Paspalum conjugatum collected from ex tin-mined land were higher than to those plants collected from undisturbed land, however the stomatal density in Scleria levis showed the opposite result. Stomatal index of all three species increases in ex tin-mined land were higher than in undistributed land. Guard cell lengths of I. cylindrica and P. conjugatum were smaller than those in undistributed land, but Scleria levis showed the opposite result. Guard cell width of I. cylindrica and S. levis were wider than those in undistributed land, but P. conjugatum showed the opposite result. These responses may reflect their adaptiveness to tin soils.

Abundance and potency of Non-Symbiotic Nitrogen-Fixing Bacteria in Padang Sapu-sapu, Pejem Village, Bangka Hermiati, Hermiati; Nurtjahya, Eddy; Mansur, Irdika
BERKALA SAINSTEK Vol 9 No 2 (2021)
Publisher : Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/bst.v9i2.20057

Padang sapu-sapu soil is similar with post-tin mining soil in its white sand texture and poor nutrient. One factor causes the disturbed land in Bangka Belitung islands is tin mining activity. One method to rehabilitate marginal soil is by utilizing the potential nonsymbiotic N2-fixing bacteria, which are able to fertilize the soil and is able to provide macro nutrient. This study aims to measure the abundance and potency of non-symbiotic N2-fixing bacteria in padang sapu-sapu, Pejem Village, Bangka. The site selection is determined by purposive sampling method and interviews and the samples were collected randomly. Isolation used selective media Ashby'`s Monitol Agar and Azospirillum media. Morphological characterization was conducted on isolates and a series selective test was carried out, i.e. hipersentivity test, hemolysis test, IAA phytohormone test and nitrogenase test. The study of the abundance population of non-symbiotic N2-fixing bacteria of two different locations showed that the total bacterial population in padang sapusapu is very small compared to its lowland forest. Isolate Azotobacter sp. TH105(a) from the lowland forests is potential as natural fertilizer.

Co-Authors Alita, Alita Andayani, Deri Anggraeni Anggraeni Anggraeni Apriliana Dyah Prawestri Ary Prihardhyanto Keim Atika Rukmana Awit Suwito Awit Suwito Ayu Natalia BR Tarigan Ayu Yuliana Deri Andayani DIAH SULISTIARINI Dyah Sandra Fiona Efita Karunia Harita EKA SARI Eka Sari Fournita Agustina Franto Franto Franto, Franto Hari Sutrisno Hermiati, Hermiati Himmah Rustiami Himmah Rustiami, Himmah Ida Farida Hasanah Indra Ambalika Syari Indra Ambalika Syari Irdika Mansur irma Akhrianti Irma Akhrianti Ismed Inonu Iwan Hilwan Kartika Kartika Lina Juairiah LUKMAN, LUKMAN MARLINA ARDIYANI, MARLINA Muhamad Nikmatullah Nashriah, Thoibatun Nissa Arifa Novalia lia Nuril Hidayati Rani, Melia Panca Ratna Santi Ratna Santi, Ratna Riwan Kusmiadi Santiago Santiago Sarlinda Sari Savira, Savira Sela Agustika Selviana . T Alief Aththorick Wawan Sujarwo Wike Ayu Eka Putri Yeni Ekawati

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