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ASSESSING ECOLOGICAL RESILIENCE OF INDONESIAN CORAL REEFS Bachtiar, Imam; Damar, Ario; ., Suharsono; Zamani, Neviaty P.
JOURNAL OF COASTAL DEVELOPMENT Vol 14, No 3 (2011): Volume 14, Number 3, Year 2011
Publisher : JOURNAL OF COASTAL DEVELOPMENT

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Abstract

Ecological resilience is an important property of natural ecosystem to be understood in coral reef management. Resilience of Indonesian coral reefs was assessed using 2009 COREMAP data. The assessment used 698 data of line intercept transects collected from 15 districts and 4 marine physiographies. Resilience index used in the assessment was developed by the authors but will be published elsewhere. The results showed that coral reefs at western region had higher average resilience indices than eastern region, and Sunda Shelf reefs had higher resilience indices than coral reefs at Indian Ocean, Sulawesi-Flores, or Sahul Shelf. Four districts were found to have coral reefs with highest resilience indices, i.e. Bintan and Natuna (western region), and Wakatobi and Buton (eastern region). Raja Ampat had coral reefs with lower average resilience indices than that of Wakatobi. Uses of resilience index in coral reef management should be coupled with other information such as maximum depth of coral communities.  
Rekruitmen Karang Scleractinia di Perairan Pulau Lembata (Recruitment of Scleractinian Corals at Lembata Island Waters) Bachtiar, Imam; Abrar, Muhammad; Budiyanto, Agus
ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 17, No 1 (2012): Jurnal Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

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Abstract

Potensi rekruitmen karang sangat penting di dalam pengelolaan terumbu karang, karena potensi pemulihan terumbu karang tergantung pada rekruitmen karang. Penelitian rekruitmen karang Scleractinia dilakukan di perairan Pulau Lembata, Nusa Tenggara Timur, pada bulan Juli 2011. Penelitian ini bertujuan untuk mengetahui keanekaragaman dan kelimpahan rekruit (anakan) karang. Hasil penelitian menunjukkan bahwa Acroporidae, Pocilloporidae, dan Poritidae merupakan tiga famili karang yang mempunyai kontribusi terbesar pada rekruitmen karang di perairan Lembata. Komposisi genus karang pada stasiun penelitian di Laut Flores (Pulau Lapan, Pulau Watupeni, Pulau Wuku) berbeda dari komposisi genus karang di stasiun perairan selat sekitar Pulau Lembata dan Laut Sawu. Ketiga stasiun penelitian di Laut Flores juga mempunyai kelimpahan rekruit yang lebih tinggi dari lokasi lainnya.   Kata kunci: karang, rekruitmen, Lembata, komposisi, kelimpahan Potential recruitment of Scleractinian corals is very important in coral reef management, since coral reef recovery is very dependent on coral recruitment. Study on coral recruitment was conducted in Pulau Lembata waters, Nusa Tenggara Timur, on July 2011. Objectives of the study were to determine taxa (family and genera) diversity and abundance of coral recruits. Results showed that coral families of Acroporidae, Pocilloporidae, and Poritidae had highest contribution to the whole coral recruitment. Study locations in the Flores Sea (Pulau Lapan, Pulau Watupeni, Pulau Wuku) showed genera composition that is different from other study locations. The three islands in the Flores Sea also had significantly higher recruit abundance than those in other locations. Key words: coral, recruitment, Lembata, composition, abundance
Struktur Komunitas dan Penyakit Pada Karang (Scleractinia) di Perairan Lembata, Nusa Tenggara Timur (Community Structure and Disease in Corals (Scleractinian) in the Waters of Lembata, East Nusa Tenggara) Abrar, Muhammad; Bachtiar, Imam; Budiyanto, Agus
ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 17, No 2 (2012): Jurnal Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

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Abstract

Infeksi penyakit pada karang telah menjadi faktor utama memperburuk kondisi terumbu karang dan memberikan dampak terhadap perubahan komunitas karang. Penelitian struktur komunitas dan jenis penyakit karang telah dilakukan pada 2 lokasi (8 stasiun) di Perairan Lembata, Nusa Tenggara Timur. Struktur komunitas meliputi sebaran dan keanekaragaman karang dilakukan dengan cara mencacah langsung menggunakan peralatan SCUBA, sedangkan tutupan bentik terumbu dilakukan dengan metode Line Intercept Transect (LIT) modifikasi panjang 10 meter dengan tiga kali ulangan. Serangan penyakit meliputi jenis dan prevalensi penyakit dilakukan dengan menggunakan metode bentik belt transek ukuran 2x10 meter sebanyak 3 kali ulangan. Total kekayaan jenis cukup tinggi mencapai 313 jenis dari 18 famili didominasi oleh karang dari Acroporidae dan Faviidae. Sebaran dan jumlah jenis karang pada bagian Timur lebih tinggi dibanding bagian Barat dan semakin berkurang ke arah Selatan. Ditemukan 14 jenis infeksi penyakit dan gangguan kesehatan pada karang dengan prevalensi berkisar 3-41,9%. Prevalensi penyakit lebih tinggi pada bagian Timur yaitu dalam teluk dan dekat dengan daratan. Ancaman serangan penyakit dan gangguan kesehatan terhadap karang termasuk dalam kategori rendah, namun menunjukan pengaruh yang signifikan pada lokasi tertentu. Kata kunci: karang, struktur komunitas, penyakit karang, Perairan Lembata Coral disease are one of main factors contributing to the global deterioration of coral reefs. The Study of coral community and disease infection were conducted at Lembata Island, Nusa Tenggara Timur. Coral community included both distribution and diversity were inventory by SCUBA, while reef bentic communities used Line Intercept Transect Method, 10 meter length modification with three replicate on 5 meter depth. Disease infection and prevalence were conducted by Bentic Belt T ransect, 2x10 meter size with three replicate. A total of species very high to reach 313 species from 18 families dominated by Acroporidae and Faviidae. Coral distribution and species number highest at Eastern of Lembata were compared than its western side and decreased toward Southern of Lembata. There were founded 14 corals disease infection and loss health with disease prevalence 3% to 41,9% and they were highest at Western of Lembata. Threat of disease infection on corals is still low category, but its significant impact on area in local scale. Key words: coral, structure community, coral disease, Lembata Waters
INDUKSI KALUS TANAMAN KRISAN (Chrysanthemum morifolium) DENGAN PEMBERIAN BENZIL AMINO PURIN (BAP) DAN DICHLOROFENOKSI ACETIL ACID (2,4 D) Hariyati, Maspan; Bachtiar, Imam; Sedijani, Prapti
Jurnal Penelitian Pendidikan IPA Vol 2, No 1 (2016): January
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (130.877 KB) | DOI: 10.29303/jppipa.v2i1.37

Abstract

Production of chrysant flowers (Chrysanthemum morifolium) is halted due to seedling supplay, that it is necessary to produce seedling on tissue culture. This study aims to determine the effect of BAP and 2.4 D for callus formation of chrysanthemum. The research using completely randomized design (CRD). The treatment was consistsed of two factors. BAP (0,0 mg/l, 1,0 mg/l, 1.5 mg/l and 2,0 mg/l) and concentration of 2,4 D (0,0 mg/l, 2,0 mg/l, 3,0 mg/l, 4,0 mg/l). Dependent variables measured were days of callus occurrence, callus colour and texture of callus. Result showed that growth regulators BAP and 2.4 D influenced the timing of the callus formation. Most rapid callus formation appeared at concentration of 2,0 mg/ l 2,4 D and longest callus formation appeared at concentrations of 0,0 mg/l 2,4 D. Callus did not appear on treatment of 0,0 mg/l BAP. The combination of BAP and 2.4 D did not influence on colour and texture of callus. Highest callus score was obtained in the treatment combination of D0B1, D0B0,5 and D0B2. The lowest callus score obtained in the treatment D4B0.Keyword: BAP, 2,4 D, Chrysanthemum morifolium, explants, Callus.
Triterpenoid Fraction Antimalarial Activity Test from Methanol Extract Made by Leaf Artocarpus camansi Against Plasmodium Berghei by In Vivo Sucilestari, Ramadhani; D J, Dwi Soelistya; Bachtiar, Imam
Natural B Vol 2, No 2 (2013)
Publisher : Natural B

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.natural-b.2013.002.02.16

Abstract

Malaria disease is still a serious health problem in Indonesia. This study aimed to determine the antimalarial activity of triterpenoid compound fraction of A. camansi leaf methanol extract to P. berghei of in vivo. This experiment of using research a completely randomize design (CRD) with four different doses (0.1 mg/kg BW, 1 mg/kg BW, 10 mg/kg BW, 100 mg/kg BW) and one negative control group (1 % CMC). The results show that triterpenoid compound fraction of A. camansi leaf methanol extract was effective to reduce parasite activity of P. berghei. The most effective dose was 100 mg/kg BW for three days with daily treatment after the mice was infected by parasite.
Plankton Community at Segara Anak Lake Gunung Rinjani National Park Arianto, Taufik; Bachtiar, Imam; Japa, Lalu
Natural B Vol 3, No 1 (2015)
Publisher : Natural B

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.natural-b.2015.003.01.10

Abstract

Plankton community was studied at the Lake of Segara Anak, Lombok Island, Indonesia. The purpose of this study was to describe community structure of plankton and to explore spatial and temporal pattern. The results show there were 39 species of phytoplankton and 5 species of zooplankton. Species diversity and similarity indices of phytoplankton were 3.064 and 0.029 respectively, while the species diversity and similarity indices of zooplankton were 1.352 and 0.060 respectively. Statistical analysis showed no significant difference spatially and temporally on the species richness, abundance, diversity index and similarity index of zooplankton and phytoplankton. Significant difference was only found on the average of species richnes and diversity index of zooplankton between the surface and the bottom of the lake. 
Perangkat Pembelajaran IPA Model 5E : Kajian Kritis Hasil Workshop Guru-Guru Anggota MGMP IPA Kota Mataram Jekti, Dwi Soelistya Dyah; Bachtiar, Imam; Sedijani, Prapti; Zulkifli, Lalu; Setiadi, Dadi
Jurnal Pengabdian Magister Pendidikan IPA Vol 1, No 1 (2018): Desember
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpmpi.v1i1.205

Abstract

Abstrak: Kurikulum Mata Pelajaran IPA SMP tahun 2017 di Kota Mataram  menuntut para guru IPA untuk bisa meningkatkan keterampilan dalam mengembangkan perencanaan  dan mengimplementasikannya secara baik. Salah satunya adalah guru IPA SMP bisa mengembangkan perangkat pembelajaran. Untuk dapat mengembangkan perangkat pembelajaran IPA sesuai dengan standar,  para guru IPA harus memiliki keterampilan dalam mengembangkan perangkat pembelajaran, Para guru masih terpaku dengan meodel yang disarankan kemnetrian terkait, sementara  banyak model pembelajaran berbasisi siswa aktif salah satunya model 5E (Engage, Explore, Explain, Extend dan Evaluate).  Oleh karena itu perlu dilakukan kegiatan untuk mengmbangkan keterampilan  bapak/ibu guru IPA anggota MGMP IPA dalam perangkat pembelajaran model 5E. Desain yang digunakan adalah post tes no control group design. Populasi adalah semua guru IPA anggota MGMP Kota Mataram, sampel yang digunakan sebanyak 40 guru. Pengumpulan data dilakukan dengan mengevaluasi produk berupa perangkat pembelajaran hasil kegiatan workshop. Data dianalisis deskriptif kuantitatif. Hasil menunjukan bahwa perangkat pembelajaran yang disusun oleh guru peserta (90%) sudah baik dalam merencanakan langkah-langkah 5E. Tetapi dalam kaitannya dengan tagihan dan pengetahuan sebagian besar perangkat pembelajaran kurang mencakup keluasan dan kedalaman materi yang ditagih oleh kompetensi dasar pengetahuan dan keterampilan. Dengan demikian walaupun langkah-langkah pembelajaran berbasis siswa aktif dan memenuhi tagihan kurikulum tetapi tingkat asesmen belum memenuhi tagihan. Berdasarkan hasil penjelasan di atas dapat disimpulkan bahwa  90% bapak ibu guru IPA dapat menyusun perangkat pembelajaran cukup baik khususnya terkait sintaks  5E. Kata Kunci : pembelajaran IPA, model 5E, kajian kritis
Peningkatan Kompetensi Guru IPA Kota Mataram dalam Memfasilitasi Penguasaan Keterampilan Abad Ke 21 Siswa SMP Jufri, A Wahab; Ramdani, Agus; Gunawan, Gunawan; Bachtiar, Imam; Wildan, Wildan
Jurnal Pengabdian Magister Pendidikan IPA Vol 1, No 1 (2018): Desember
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpmpi.v1i1.207

Abstract

Abstrak: Kebanyakan guru IPA di jenjang SMP belum mampu mengintegrasikan unsur-unsur keterampilan abad ke-21 dalam pembelajaran IPA di kelas. Pengalaman dalam berinteraksi dengan guru IPA dan mahasiswa calon guru IPA di pulau Lombok, mengindikasikan bahwa mereka belum memiliki kemampuan yang optimal dalam merancang perangkat pembelajaran maupun instrumen penilaian yang berorientasi pada perkembangan keterampilan abad ke-21 yang seharusnya dikuasai oleh  peserta didik tingkat SMP.  Sehubungan dengan hal tersebut, perlu dilakukan upaya untuk mem­berdayakan kemampuan guru dalam mengasses hasil belajar IPA siswa terutama yang terkait dengan penguasaan unsur-unsur keterampilan abad ke-21 terutama keterampilan berpikir dan literasi sains. Pengabdian pada masyarakat ini dilaksanakan dengan tujuan untuk: 1) memfasilitasi peningkatan kompetensi guru IPA dalam mengasses hasil belajar peserta didik, dan 2) melatih guru mengembangkan instrumen yang berorientasi pada keterampilan abad ke-21 secara terintegrasi dengan materi pelajaran IPA SMP.  Materi pengabdian pada masyarakat ini diharapkan memberi manfaat dalam membantu meningkatkan kompetensi guru dalam merancang instrumen pembelajaran IPA yang memuat unsur-unsur keterampilan abad ke-21 pada dirinya sendiri dan pada peserta didiknya. Permasalahan yang menjadi fokus pengabdian masyarakat ini adalah terbatasnya kemampuan guru IPA dalam merancang instrumen untuk mengasses penguasaan unsur-usur keterampilan abad ke-21 seperti literasi sains, berpikir kritis, dan kreativitas siswa. Strategi yang diterapkan dalam kegiatan pengabdian ini antara lain ialah: (1) melaksanakan  penyuluhan kepada guru-guru IPA SMP di kota Mataram, (2) melaksanakan pelatihan terstruktur untuk merancang instrumen penilaian hasil belajar IPA yang berorientasi pada keterampilan abad ke-21. Luaran yang telah dihasilkan melalui pengabdian pada masyarakat ini adalah: 1) terlaksananya sosialisasi dan pengembangan pemahaman tentang keterampilan abad ke 21 dan instrumen penialainnya bagi para guru IPA SMP di kota Mataram, 2) terlaksananya pelatihan merancang instrumen hasil belajar IPA yang efektif untuk mengasses penguasaan keterampilan abad ke-21 siswa SMP, 3) tersusunnya artikel hasil pengabdian pada masyarakat yang dipublikasikan dalam jurnal ilmiah. Kata Kunci: instrumen, hasil belajar, keterampilan abad ke-21
EFEKTIVITAS MEDIA ANIMASI TERHADAP HASIL BELAJAR BIOLOGI SISWA SMPN 2 KEDIRI Oktarini, Dewi; Jamaluddin, Jamaluddin; Bachtiar, Imam
Prisma Sains : Jurnal Pengkajian Ilmu dan Pembelajaran Matematika dan IPA IKIP Mataram Vol 2, No 1: June 2014
Publisher : IKIP Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/j-ps.v2i1.1048

Abstract

The use of instructional media is essential for understanding Biology. This study aims to determine the effectiveness of the use of animation media on learning outcomes. The study was conducted with quasi-experimental and non-equivalent pre-test-post-test control group designs. Data were taken from the pre-test, post-test and gain scores. The research instrument is a written test in the form of multiple choice questions. Data were analyzed using 'mean difference test'. The results showed that the results of the study on sub photosynthesis and respiration material differed significantly. The gain analysis shows that the animation media has improved student learning outcomes.
CORAL RECRUITMENT ON REEF BALLTM MODULES AT THE BENETE BAY, SUMBAWA ISLAND, INDONESIA Bachtiar, Imam; Prayoga, Windy
JOURNAL OF COASTAL DEVELOPMENT Vol 13, No 2 (2010): Volume 13, number 2, Year 2010
Publisher : JOURNAL OF COASTAL DEVELOPMENT

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Abstract

Reef BallTM structure is a popular artificial reef module that has been invested in many countries. Publication on its efficacy in promoting coral recruitment however remains lack of study or publication. This present study was aimed to examine the pattern of coral recruitment on reef ball structure at the Benete Bay of Sumbawa Island, Indonesia. Thirty reef-balls (dome shape; 0.90 cm height, 1.20 cm diameter) were monitored after three years of deployment. The results of this study showed that nearly all coral colonies grew on the outer vertical surface and upper side of the reef balls. The recruit number varied a lot between 1-76 colonies per module. Most recruits were belonged to the Family Acroporidae, which contributed approximately 76 percent to the whole recruitment (640 colonies). Branching acroporiid was the most abundant colonies (55%). Pocilloporidae and Faviidae both contributed approximately nine percent to the total recruitment, while Poritidae contributed about three percent. Other coral families only had <1% contribution. The diameter of coral colonies which were growing on the reef balls varied between 5-290 mm. The number of recruit on the ball was very low at 10 meter depth (1-5 colonies per ball) that was likely to be affected by sedimentation. This study showed that reef ball module can be effectively used as a method in rehabilitating damaged coral reefs, and developing a proto-reef.