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All Journal HAYATI Journal of Biosciences JURNAL ISTEK Journal of Tropical Biodiversity and Biotechnology Jurnal Ilmiah Biosaintropis (Bioscience-Tropic) Caraka Tani: Journal of Sustainable Agriculture Best Journal (Biology Education, Sains and Technology) TROPICAL BIOSCIENCE: Journal of Biological Science
Rahmat Taufiq Mustahiq Akbar
Department Of Biology, Faculty Of Science And Technology, UIN Sunan Gunung Djati Bandung, Bandung
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Computer Science & IT Earth & Planetary Sciences Education Environmental Science Immunology & microbiology Public Health

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PENINGKATAN NUTRISI LIMBAH PRODUKSI BIOETANOL DARI SINGKONG MELALUI FERMENTASI OLEH KONSORSIUM Saccharomyces cereviseae dan Trichoderma viride Rahmat Taufiq Mustahiq Akbar; Yani Suryani; Iman Hernaman
JURNAL ISTEK Vol 8, No 2 (2014): ISTEK
Publisher : JURNAL ISTEK

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

Abstract

Bioethanol is a renewable bio-fuels as an alternative energy substitute for oil, in the process leaving a solid waste that can be leveraged into a more useful product. This study aims to improve nutrition and reduce HCN and get the right dose of inoculum in the fermentation of bioethanol from cassava waste. This research was conducted with the experimental method used Completely Randomized Design (CRD) in the 3 x 3 factorial with 3 replications. The first factor inoculum dose (D) to the level of inoculum dose, respectively d1 = 2%, 3% = d2, d3 = 4% and the second factor is the length of fermentation, namely for 0, 4 and 8 days As for some of the parameters measured were protein content and crude fiber through proximate analysis, as well as levels of HCN by distillation method. The result showed that the best dose is the dose of 4% which can increase protein content from 2.47% to 2.91% before fermentation - 4.88% after fermentation and can lower crude fiber content of 2.65% to 2.50 % - 2.07% and influential to the decreased levels of HCN from 15.92 mg / kg to 12.73 mg / kg - 0.00 mg / kg for 8 days after fermentation. The results showed that the fermentation process using a consortium of Saccharomyces cerevisiae and Trichoderma viride can improve the quality of solid waste processing bioethanol from cassava which include increased levels of protein, crude fiber and decreased levels of HCN reduction.
Keanekaragaman dan Kelimpahan Makrozoobentos Sebagai Bioindikator Kualitas Air di Situ Patengan, Kabupaten Bandung, Jawa Barat Rahmat Taufiq Mustahiq Akbar; Yuni Setiyowati; Ana Widiana; Tri Cahyanto
Jurnal Ilmiah Biosaintropis (Bioscience -Tropic) Vol 8 No 1 (2022): Agustus 2022
Publisher : Fakultas Matematika & Ilmu Pengetahuan Alam - Universitas Islam Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1004.76 KB) | DOI: 10.33474/e-jbst.v8i1.509

Abstract

Situ Patengan is standing water located at the foot of Mount Patuha, Patengan Village, Rancabali District, Bandung Regency, West Java. Situ Patengan is also used for various activities including as a tourist area, fishing, and tea plantations as well as plantation business rights. The number of activities around Situ Patengan can potentially affect the quality of the waters and the organisms in it, including macrozoobenthos organisms. The presence of macrozoobenthos can also be used as a bioindicator of water quality because it is very sensitive to environmental changes. This study aims to determine the diversity, abundance, and influence of environmental factors on macrozoobenthos and to determine the water quality of Situ Patengan. The research was conducted using the purposive sampling method. Three stations are determined based on environmental factors and land use in the inlet area, forest edge, and tourism area. Based on the results of the study found 3 macrozoobenthos phyla, namely Molluscs (Pomacea canaliculata, Filopaludina javanica), Annelida (Lumbriculus sp.), and Arthropoda (Macrobracium rosenbergii, Enallagma sp., Pelocoris femoratus). Macrozoobenthos diversity ranged from 0.13-1.12 with low to moderate categories while abundance ranged from 11-91 ind/m2 and the Dominance Index in Situ Patengan ranged from 0.003-0.453 with the dominant species being Pomacea canaliculata. The Family Biotic Index shows results from 5.94 to 6.50 with the criteria that the waters at each station are not in good condition. The water quality of Situ Patengan based on macrozoobenthos bioindicators is moderate to heavily polluted. Environmental factors in this study such as depth, brightness, temperature, pH, salinity, and DO have a very low correlation to the family biotic index. Keyword: Bioindicator, diversity, water quality, macrozoobenthos, situ patengan
Population structure and habitat preference of cave crickets (Rhaphidophora sp. (Orthoptera: Rhaphidophoridae)) in Sanghyang Kenit cave, Citatah karst area, West Java Isma Dwi Kurniawan; Rahmat Taufiq Mustahiq Akbar; Risda Arba Ulfa; Mentari Kusuma Wardani; Birama Satria
Journal of Tropical Biodiversity and Biotechnology Vol 7, No 3 (2022): December
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jtbb.73051

Abstract

Cave crickets are considered as a keystone species that can be used as a cave ecosystem bioindicator. Developing caves as tourism has considerable potential to disturb cave cricket populations. This study aimed to investigate cave cricket population structure and their habitat preference in Sanghyang Kenit cave one year after it developed into a show cave. Data were collected through standardized visual searching in three cave zones: entrance, twilight, and dark. Besides cave crickets, other macroarthropods discovered in each zone were also recorded. Abiotic parameters of habitat comprised air and soil temperatures, RH, soil moisture, soil pH, and light intensity were measured. Data were analyzed to show cave crickets abundance, density, sex ratio, and age structure. Statistical analysis comprising Kruskal Wallis, non-metric multidimensional scaling, and correlation tests were performed. The cave cricket population in Sanghyang Kenit belonged to a single species, Rhaphidophora sp. The population was around 78-108 individuals and distributed in all cave zones. The abundance and density in twilight and dark zones were significantly higher than in the entrance. The number of males outperformed females with a 2.16 ratio. Besides, the population was dominated by the sub-adult class. Environmental parameters of twilight and dark zones tended to be similar to one another compared to the entrance. Cave crickets preferred habitats with dark, humid, and acidic soil pH. Heteropoda sp. and Catagaeus sp. were considered potential predators. This study implies the importance of protecting cave crickets in Sanghyang Kenit. 
Aktivitas Harian Pasangan Owa Jawa (Hylobates moloch) Pasca-pelepasliaran di Kawasan Cagar Alam Patengan, Jawa Barat RENI NURDIANTI; RAHMAT TAUFIQ MUSTAHIQ AKBAR
Tropical Bioscience: Journal of Biological Science Vol. 2 No. 1 (2022): Juni 2022
Publisher : Program Studi Biologi - Fakultas Sains - UIN Sultan Maulana Hasanuddin Banten

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32678/tropicalbiosci.v2i1.5827

Abstract

Owa jawa (Hylobates moloch Audebert, 1798) merupakan satwa primata endemik Pulau Jawa dan termasuk satwa yang dilindungi. Sebagai salah satu satwa yang dilindungi, pelestarian owa jawa terus dilakukan melalui upaya konservasi guna menjamin kelestariannya, terutama di habitat alaminya. Salah satu upaya pelestarian owa jawa adalah dengan melakukan penelitian guna memperoleh informasi mengenai aktivitas satwa tersebut. Tujuan penelitian ini yaitu untuk mengamati aktivitas harian pasangan owa jawa pasca pelepasliaran di kawasan Cagar Alam Patengan. Metode yang digunakan pada penelitian ini yaitu perpaduan antara metode scan sampling dengan interval 5 menit dan ad-libitum. Teknik pengumpulan data dilakukan melalui observasi langsung di kawasan Cagar Alam Patengan. Penelitian dilakukan pada Januari-Februari 2021. Berdasarkan hasil pengamatan, diperoleh data yang bervariasi setiap harinya. Pada penelitian ini, pengamatan dilakukan pada sepasang owa jawa pasca-pelepasliaran, yaitu owa jawa jantan (Boy) dan owa jawa betina (Munir). Aktivitas harian owa jawa jantan yang diamati selama berada di kawasan Cagar Alam Patengan meliputi aktivitas makan (39%), lokomosi (24%), istirahat (27%), aktivitas sosial (5%), defekasi (2%), dan urinasi (3%), sedangkan aktivitas owa jawa betina terdiri dari aktivitas makan (40%), lokomosi (26%), istirahat (24%), aktivitas sosial (6%), defekasi (2%), dan urinasi (2%). Aktivitas harian pasangan owa jawa pasca-pelepasliaran didominasi oleh aktivitas makan (39-40%) dari total seluruh aktivitas. Adapun jenis pepohonan yang digunakan sebagai sumber pakan oleh owa jawa diantaranya dari kelompok Moraceae, Euphorbiaceae, Acanthaceae, Aralliaceae, Fagaceae, Theaceae, Arecaceae, Magnoliaceae, Lauraceae, Junglandaceae, dan Casuarinaceae.
Arthropod Community Structure Indicating Soil Quality Recovery in the Organic Agroecosystem of Mount Ciremai National Park’s Buffer Zone Isma Dwi Kurniawan; Ida Kinasih; Rahmat Taufiq Mustahiq Akbar; Liberty Chaidir; Sawaludin Iqbal; Bayu Pamungkas; Zikri Imanudin
Caraka Tani: Journal of Sustainable Agriculture Vol 38, No 2 (2023): October
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/carakatani.v38i2.69384

Abstract

The Mount Ciremai National Park (TNGC) buffer zone is designed to support conservation efforts. However, agriculture in this area is dominated by conventional farming that excessively uses synthetic fertilizers, which threatens soil quality. Introducing an organic fertilizer and plant growth-promoting rhizobacteria (PGPR) is expected to enhance soil quality recovery in this area. This study aimed to analyze the differences in soil arthropod communities between organic and conventional agriculture and a forest in the TNGC buffer zone to assess soil quality improvement generated by the application of the organic fertilizer and PGPR. Soil arthropods were collected with Berlese-Tullgren funnels and pitfall traps. Several associated environmental parameters, including soil pH, C-organic, temperature, and moisture, were also measured. Data were analyzed using ecological indices (i.e., richness, diversity, evenness, dominance, similarity) and soil biological quality (QBS-ar). Non-metric multidimensional scaling (NMDS) was performed to examine the relation of arthropods with environmental parameters. In total, 957 individuals of soil arthropods belonging to four classes and 15 orders were recorded. Berlese-Tullgren and pitfall traps resulted in a similar tendency in most variables, with higher richness, diversity, and evenness values in the forest, followed by organic and conventional habitats. In addition, similarity and QBS-ar indicated that forest and organic communities were more similar than conventional community. C-organic, soil moisture and pH were considered the most deciding environmental parameters for arthropod assemblages. All measured variables in this study illustrated better soil quality in organic than in conventional agriculture. This study implicates the benefit of utilizing organic fertilizers and PGPR for soil quality restoration in agroecosystems.
Macroarthropod Diversity, Distribution, and Community Structure in Cikarae Cave of the Klapanunggal Karst, West Java Isma Dwi Kurniawan; Cahyo Rahmadi; Rahmat Taufiq Mustahiq Akbar; Omar Calva; Fezaa Ashelia Zakia Ameliee; Ahmad Zaenal Ependi
HAYATI Journal of Biosciences Vol. 30 No. 5 (2023): September 2023
Publisher : Bogor Agricultural University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.4308/hjb.30.5.995-1007

Abstract

Arthropods are the most dominant fauna in cave realms. Ecological studies of cave-dwelling arthropods are essential for cave ecosystem conservation. This study was conducted to determine the ecological aspects of macroarthropods in Cikarae Cave, West Java, focusing on their diversity, distribution, and community structure. The cave passage was divided into three zones based on environmental disparities. Data collection was carried out through direct search and counting methods. Data were analyzed using non-metric multidimensional scaling (NMDS) and several ecological indices (diversity, evenness, and dominance). Nineteen macroarthropod morphospecies were recorded and distributed among 5 classes, 11 orders, and 18 families. Most of these morphospecies were troglophiles. A new troglobitic species (Isopoda: Philosciidae) with a high degree of troglomorphy and exclusive microhabitat was registered. Most morphospecies were collected in Zone 1 (17), followed by Zone 3 (9) and Zone 2 (8). Collected macroarthropods preferred cave walls over floors and ceilings. Overall, Cikarae showed a low diversity index (0.782) and evenness (0.265), while dominance was relatively high (0.692). Trachyjulus tjampeanus, Rhaphidophora sp., and Theridiosomatidae sp. were the most dominant taxa.
Indikasi Perilaku Breeding Elang Brontok (Nisaetus cirrhatus) Di Pusat Konservasi Elang Kamojang Rahmat Taufiq Mustahiq Akbar; Fadiya Muafa Hamzah
BEST Journal (Biology Education, Sains and Technology) Vol 6, No 2 (2023): September 2023
Publisher : Program Studi Pendidikan Biologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30743/best.v6i2.8029

Abstract

Eagle is one of the animals that can be used as an indicator of environmental health because it has a high level of sensitivity to the environment. The loss of the eagle population in nature will cause ecosystem changes due to disruption of food webs. The Brontok Eagle (Nisaetus cirrhatus) is a type of eagle which according to the IUCN is classified as the least concern category, its existence in nature is not easy to find due to poaching and habitat destruction. Kamojang Eagle Conservation Center (PKEK) is a conservation organization whose function is to rehabilitate the eagles that have been kept. This research was conducted to find out indications of the breeding behavior of bald eagles in PKEK and to find out the differences in the breeding behavior of bald eagles in PKEK and eagles in nature. The method used is scan sampling with 5 minute intervals combined with the ad-libitum method. Based on the observations, the following proportions were obtained, 65% standing alone, 24% perched together, 8% flying and 3% making sounds. Based on these data, indications of breeding behavior have been observed, but it has not yet become the dominant behavior. The indications of observed breeding behavior were perched together. There is a difference in mating behavior between the Brontok eagles in PKEK and the eagles in nature, that is, they do not observe the behavior of flying together. Keywords: Breeding, Brontok eagle, Conservation
Co-Authors Ahmad Zaenal Ependi Ana Widiana Bayu Pamungkas Birama Satria Cahyo Rahmadi Fadiya Muafa Hamzah Fezaa Ashelia Zakia Ameliee Ida Kinasih Iman Hernaman Kurniawan, Isma Dwi Liberty Chaidir Mentari Kusuma Wardani Omar Calva RENI NURDIANTI Risda Arba Ulfa Sawaludin Iqbal Tri Cahyanto Yani Suryani Yuni Setiyowati Zikri Imanudin