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STRUKTUR KOMUNITAS FITOPLANKTON SEBAGAI BIOINDIKATOR STATUS TROFIK PERAIRAN WADUK JANGARI KABUPATEN CIANJUR Intan Suhartini; Isma Dwi Kurniawan; Rahmat Taufiq M.A
Gunung Djati Conference Series Vol. 6 (2021): Seminar Nasional Biologi (SEMABIO) 6 Tahun 2021
Publisher : UIN Sunan Gunung Djati Bandung

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Jangari Reservoir is one of the edges of the CirataReservoir located in West Java. Jangari Reservoir is widely usedas tourism and a place for fish cultivation which has the potentialto improve the trophic status of the waters. Phytoplanktoncommunities can be used as bioindicators in evaluating the trophicstatus of waters. This study aims to determine the trophic status ofthe Jangari Reservoir by using phytoplankton as a bioindicatorcombined with the physical and chemical properties of the waters.The method used is purposive sampling by determining threestations based on differences in utilization, tourism activities andfloating net cages. The data analysis consisted of the structure ofthe phytoplankton community and the calculation of the TrophicLevel Index (TLI) value. The physical and chemical parameterstested included water temperature, brightness, salinity, DO, pH,Total Nitrogen (TN), and Total Phosphorus (TP). The resultsshowed that there were 10 classes of phytoplankton found,consisting of Bacillariophyceae (3 genus), Chlorophyceae (7 genus), Cyanophyceae (1 genus), Dinophyceae (2 genus),Euglenophyceae (1 genus), Mediophyceae (2 genus),Trebouxiophyceae (3 genus), Ulvophyceae (1 genus),Xanthophyceae (1 genus), and Zygnematophyceae (3 genus).Abundance of phytoplankton ranged from 2,078-2,896 ind/L.Concentration of chlorophyll-a ranged from 22.5 to 31.96 mg/L.Value of the TLI ranged from 4.34 to 4.58. Based on observations,the trophic status of Jangari Reservoir based on phytoplanktoncomposition is classified as eutrophic, based on abudance ismesotrophic, and based on TLI is eutrophic.

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

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

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.

Pelatihan Inovasi Produk Pangan Abon Pepaya Muda di Dusun Pamagersari Desa Tanjungsari Sumedang Ana Widiana; Tri Cahyanto; Ateng Supriyatna; Astuti Kusumorini; Anggita Rahmi Hafsari; Yani Suryani; Ucu Julita; Ida Kinasih; Mohamad Agus Salim; Risda Arba Ulfa; Ayuni Adawiyah; Isma Dwi Kurniawan; Rahmat Taufik MA; Yuni Kulsum; Adisty Virakawugi Darniwa
JPM PAMBUDI Vol 3 No 1 (2019): JPM Pambudi
Publisher : Pusat Penelitian dan Pengabdian Kepada Masyarakat (P2M) IKIP Budi Utomo Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33503/pambudi.v3i1.538

Papaya is a familiar fruit in Indonesia. During this time, papaya fruit is consumed by direct eating and sold at low prices. Young papaya can be processed into a form of creative food products such as abon. The manufacturing process includes preparation of material tools, stripping, steaming for 40 minutes, thin slicing, addition of complementary spices, drying, frying, and serving. The implementation of PKM activities included the dissemination of material and the practice of making abon papaya. Based on the results of the activity, it was obtained information that the participants in the activity didn’t know much about the nutrients contained in papaya fruit, even the participants had never known that papaya fruit could be processed into shredded fruit. The community service activities on the topic of making shredded papaya fruit can increase awareness, knowledge, skills, and also the motivation of the business of Pamagersari Hamlet Community in Tanjungsari Village, Sumedang.

Diversity of plankton in the waters of sanghyang kenit Rajamandala cave, Indonesia Akbar, Rahmat Taufiq Mustahiq; Devi, Sella Nur; Kurniawan, Isma Dwi; Ulfa, Risda Arba; Darniwa, Adisty Virakawugi
Depik Jurnal Ilmu Ilmu Perairan, Pesisir, dan Perikanan Vol 12, No 3 (2023): DECEMBER 2023
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.12.3.32543

Sanghyang Kenit Cave is a cave that has an aquatic environment and a potential habitat for plankton. Plankton can be a bioindicator of water because of its sensitivity to the environment. The purpose of this study was to determine the diversity, interrelationship factors, and linkages of plankton with the environment in the waters of Sanghyang Kenit Rajamandala Cave, West Bandung. This research was conducted from August 2021 to September 2022. The study employed a purposive sampling method, identifying three sampling zones (The Light, Twilight, and Dark zones) during morning, afternoon, and evening periods. Sampling was done by taking a sample of 10 liters and then filtering using plankton net. The Physico-chemical parameters measured included water temperature, light intensity, pH, DO, salinity, nitrate, and phosphate. Based on the results of data analysis found 4 classes with 12 plankton morphospecies. Diversity index values in the Light zone (1.10), Twilight zone (1.08), and dark zone (1.08). Abundance index value in the light zone is 2.537 cells/l, the twilight zone is 501 cells/l, and the dark zone is 29 cells/l. Diversity and plankton in the waters of Sanghyang Kenit Cave have a very strong correlation with water temperature, light intensity, and pH of water. This can be the basis for the development of further research on the management and monitoring of caves that are used as tourist attractions.KeywordsDiversityPlanktonSanghyang Kenit CaveEnvironment

Diversity of plankton in the waters of sanghyang kenit Rajamandala cave, Indonesia Akbar, Rahmat Taufiq Mustahiq; Devi, Sella Nur; Kurniawan, Isma Dwi; Ulfa, Risda Arba; Darniwa, Adisty Virakawugi
Depik Jurnal Ilmu Ilmu Perairan, Pesisir, dan Perikanan Vol 12, No 3 (2023): DECEMBER 2023
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.12.3.32543

Sanghyang Kenit Cave is a cave that has an aquatic environment and a potential habitat for plankton. Plankton can be a bioindicator of water because of its sensitivity to the environment. The purpose of this study was to determine the diversity, interrelationship factors, and linkages of plankton with the environment in the waters of Sanghyang Kenit Rajamandala Cave, West Bandung. This research was conducted from August 2021 to September 2022. The study employed a purposive sampling method, identifying three sampling zones (The Light, Twilight, and Dark zones) during morning, afternoon, and evening periods. Sampling was done by taking a sample of 10 liters and then filtering using plankton net. The Physico-chemical parameters measured included water temperature, light intensity, pH, DO, salinity, nitrate, and phosphate. Based on the results of data analysis found 4 classes with 12 plankton morphospecies. Diversity index values in the Light zone (1.10), Twilight zone (1.08), and dark zone (1.08). Abundance index value in the light zone is 2.537 cells/l, the twilight zone is 501 cells/l, and the dark zone is 29 cells/l. Diversity and plankton in the waters of Sanghyang Kenit Cave have a very strong correlation with water temperature, light intensity, and pH of water. This can be the basis for the development of further research on the management and monitoring of caves that are used as tourist attractions.KeywordsDiversityPlanktonSanghyang Kenit CaveEnvironment

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