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Accumulation Time and Antioxidant Responses of Inorganic Arsenic on Brown Seaweed Padina minor Wiga Alif Violando; Sri Andayani; Saou-Lien Wong; Chih-Hsuan Tseng
Research Journal of Life Science Vol 4, No 2 (2017)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (720.843 KB) | DOI: 10.21776/ub.rjls.2017.004.02.4

Abstract

Padina minor had a good ability to bind and accumulate arsenic (As). This research aimed to observe the As accumulation and detoxification time, also the antioxidant defense activities. Each gram of P. minor was culture in various As contaminate media for 7 days, then reculture in As-free media for 14 days. There was an acute effect on thali by decreasing its growth slowly till final day with small amount accumulation at concentration 25 µg iAs g-1. Meanwhile, direct attenuation impact was due at 50 and 100 µg iAs g-1 with massive accumulation. The thali starts to recover after reculture in health environment for 14 days. Only As5+ was detected on the thali at day 7 and 21 were indicates internal oxidation of As3+ was done before 7 days. Various antioxidant activities such as decreasing polysaccharide and increasing activities of DPPH and flavonoid at high level were observed. Those indicated that 50 µg iAs g-1 was optimum iAs level on P. minor. The results indicate that P. minor has ability to oxidase and methylate with antioxidant role as defensive activities against iAs, but it also needs more than 14 days to recover in high level contamination.
Investigating Positive Perceptions of High School Students' Distance Learning Experiences During a Pandemic Agus Purnomo Ahmad Putikadyanto; Gamal Kusuma Zamahsari; Wiga Alif Violando
Abjadia Vol 6, No 2 (2021): Abjadia
Publisher : Universitas Islam Negeri Maulana Malik Ibrahim Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18860/abj.v6i2.13874

Abstract

COVID-19 has driven pedagogical transformation in the most unexpected and sudden way in education history. Students must switch from face-to-face to distance learning. Trough quantitative research model, this study aims to describe high school students' perceptions of distance learning. Samples were collected from school which might prepare their students for distance learning. Using a questionnaire data collection technique, a sample of 70 high school students received 40 questions derived from three perceptual indicators, namely absorption, understanding, and assessment. The results of this study's absorption, understanding, and assessment indicator scores which were higher than the median indicated that students' perceptions of distance learning were typically positive. This occurs as a result of collaboration between students, teachers, and school staff to accomplish effective distance learning.
STUDI KERAPATAN DAN KERAGAMAN LAMUN DI PANTAI BAMA TAMAN NASIONAL BALURAN Selobing Purna Agung Indarto; Asri Sawiji; Dian Sari Maisaroh; Wiga Alif Violando
Jurnal Perikanan Pantura (JPP) Vol 4 No 1 (2021): MARET 2021
Publisher : Universitas Muhammadiyah Gresik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30587/jpp.v4i2.2462

Abstract

This research aims to find out the density and diversity of seagrass at Bama Beach, Baluran National Park, which was conducted in March 2019. In this study, seagrass was identified by quadrant transect method, with water quality measurement and association organisms were also measured. Three types of seagrass have been identified; Cymodocea rotundata, Enhalus acoroides, and Halodule universis. Among them, Cymodocea rotundata was found to be the most abundant seagrass species on Bama Beach with a density was up to 60%. The percentage of seagrass closure reached 35-56%. The water quality of the seagrass ecosystem showed optimal conditions for seagrass metabolism. Sea cucumber (Holothuria sp.) was found as an associated organism found in transects. In conclusion, the seagrass condition on Bama Beach showed high density and varied conditions.
Zoning Effectiveness of Marine Nature Reserve Conservation Areas (SAP) Raja Ampat Islands Against Coral Reef Protection Faidlul Qodir; Mauludiyah; Dian Sari Maisaroh; Wiga Alif Violando; Ofri Johan; Idris; Nurliah; Saptono Waspodo
Jurnal Biologi Tropis Vol. 23 No. 1 (2023): January - March
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v23i1.4623

Abstract

Raja Ampat Islands have been designated as a Marine Nature Reserve (SAP) since 2014, and community activity in these waters remains high for tourism, fishing and sea transportation activities. All of these activities have the potential to suppress the condition of the coral reefs there. Therefore, it is necessary to evaluate the effectiveness of zoning in terms of social and ecological indicators. This research was conducted using the Underwater Visual Census (UVC) method for coral reef fish and the Underwater Photo Transect (UPT) method for coral cover at a depth of 5-7 m. The set critical threshold value is used to evaluate the success of the zoning taken by interviewing fishermen. The results of the study found that the core zone had unfavorable conditions compared to the other zones. Based on an analysis of ecological indicators, the percentage of coral cover was only 20.9% and an abundance of reef fish of 28 ind/m2. The results of the social analysis of the community, Waisilip Village has the lowest level of compliance with a value of 56%. Meanwhile, 77% of respondents agree with zoning, and only 19% understand the zoning management system. The management of SAP Raja Ampat can be said to be effective by taking into the ecological and social indicators of the community. Increase in the percentage of coral cover in the core zone (0.2%), utilization zone (3.9%), sustainable fisheries zone (0.8%) and cultivation zone (5.7%). Most fishermen have good insight and concern for coral reefs and other aquatic resources.
Microplastics Content of Seaweeds in the Mariculture Potential Zone at The Southwest of Coastal Bawean Island Wiga Alif Violando; Nur Maulida Safitri; Andi Rahmad Rahim; Mauludiyah; Agus Purnomo Ahmad Putikadyanto
Jurnal Biologi Tropis Vol. 23 No. 2 (2023): April-June
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v23i2.4770

Abstract

Bawean Island is a sheltered and clean coastal waters that can be exploited for mariculture, particularly seaweed. Due to its enclosed environment, the presence of different wastes, particularly microplastics, is deemed negligible. The purpose of this research is to investigate the prevalence of microplastics in numerous seaweeds on Bawean Island's southwest shore, as well as the viability of seaweed production. At a depth of 1-6 meters, samples of red, green, and brown seaweed were obtained and examined for microplastics by destroying the cell walls. At the two observation sites, water characteristics such as current, pH, salinity, TDS, DO, substrate, temperature, depth, and brightness were also monitored. Based on the results, the southwest coastal waters of Bawean were suitable for seaweed cultivation. Furthermore, the lowest-highest microplastic concentration was discovered in Gracillaria sp. 44±18 particles/100g, Halimeda sp. 52±16 particles/100g, Caulerpa sp. 94±31 particles/100g, and Sargassum sp. 251±59 particles/100g, with a form of microplastic found in fragments, fibers, and films. Various colors of microplastics were found. According to this study, seaweed can act as a vector for microplastics to infiltrate the food chain. This is indicated by the substantial accumulation of microplastics in cultivation potential zones of seaweed where there are fewer human activities. This microplastic accumulation could then occur at a higher trophic level, thus seaweed in nature must be quarantined and cleaned after cultivation to reduce the concentration of microplastic contamination.
Relationship between Coral Fish Community Structure with Chlorophyll-A Content and Sea Surface Temperature in the Conservation Area Suaka Alam Perairan (SAP) Raja Ampat, West Papua Muhammad Rizky Adipratama; Mauludiyah Mauludiyah; Dian Sari Maisaroh; Wiga Alif Violando; Ofri Johan; Idris; Paryono; Sadikin Amir
Jurnal Biologi Tropis Vol. 23 No. 2 (2023): April-June
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v23i2.4639

Abstract

The The waters of Raja Ampat have a healthy coral reef ecosystem and a wide variety of species so it has a high abundance of coral reef fish. One of the indicators of fertility level in water is chlorophyll-a and its high and low are influenced by sea surface temperature. The purpose of this study was to determine the relationship between chlorophyll-a content and sea surface temperature using satellite imagery data on the community structure of reef fish in the waters of SAP Raja Ampat. The coral reef fish data collection method used UVC (Underwater Visual Census) while the chlorophyll-a content and sea surface temperature used spatial analysis. The results showed that the reef fish diversity index value was 4,1 - 4,6 in the high category, uniformity 0,88-0,96 in the high category, dominance 0,014 - 0,026 in the low category, for abundance 244.340 ind/ha – 403.520 ind/ha and biomass 131,45 kg/ha - 204 kg/ha. The chlorophyll-a content obtained was 0,366 mg/m3 – 0,511 mg/m3 and the sea surface temperature obtained was 30,717°C – 31,899°C. The results of the relationship of reef fish community structure with chlorophyll-a content and sea surface temperature do not have a significant correlation.
Strengthening the Existence of Pesona Bahari Coastal Community Through Lobster Cultivation in the Pandemic Era Wiga Alif Violando; Moch. Irfan Hadi; Asri Sawiji; M. Chusnan Ma'arif; Nur Maulida Safitri; Puji Maryono; Robayanto Robayanto; Dian Tugu Warsito Taufiq; Abdul Azis; Abdul Muhid
Engagement: Jurnal Pengabdian Kepada Masyarakat Vol 7 No 1 (2023): May 2023
Publisher : Asosiasi Dosen Pengembang Masyarajat (ADPEMAS) Forum Komunikasi Dosen Peneliti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29062/engagement.v7i1.1374

Abstract

The pandemic that ravaged Indonesia caused restrictions on social interaction policy was reduced people's productivity, particularly the micro-economic components and tourism enterprises in coastal areas. An alternative solution was needed to maintain the existence of the coastal community. The participatory research methods were used to find an ideal form of a solution including CBPR and ABCD. The CBPR method was used for community outreach and acculturation. Meanwhile, the ABCD method was used in the process of optimizing community assets. The process of Pesona Bahari community acculturation yields favorable effects in marine cultivation. Asset inventories by the community show that GWD Beach had huge potential to be a lobster farm. Moreover, the community conducts its business process for lobster cultivation operations by involving all internal and external stakeholders. Pesona Bahari community shows a process of enthusiasm and sustained engagement in order to bring social transformation.
Study of Environmental Parameters on Lobster (Panulirus spp.) Enlargement with Fixed Cage at GWD, Banyuwangi Putra, Riswanda Rangga; Nugraha, Dimas Putra Wahyu; Albarkah, M. Rafly; Ma’arif, M. Chusnan; Fatih, M. Fachrul; Hadi, Moch. Irfan; Violando, Wiga Alif; Nusa, Raras Widya
Biota Vol 15 No 1 (2022)
Publisher : Universitas Islam Negeri Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20414/jb.v15i1.356

Abstract

One of the marine commodities, Lobster (Panulirus spp.), has unabated demand in the global market, while, Lobster production remains static due to the difficulty of implementing its rearing activities. Relative rearing of lobster (Panulirus spp.) is usually performed using the floating net cage method with calm water conditions. In contrast, areas with extreme weather conditions tend to have difficulty applying this method. The potential of using the fixed cage method was assessed by rearing the Lobster at Pesona Bahari Banyuwangi Fish Cultivation Group. This research aimed to investigate the feasibility of the environmental conditions in the waters of GWD, Banyuwangi. The study was conducted for three months. Data such as temperature and light intensity through the help of a pendant was collected. Water quality parameters were recorded during this study, including salinity, pH, dissolved oxygen, and current velocity. Sampling was conducted four times to see the relationship between length and weight. The results showed that the GWD environmental parameters were very supportive for lobster rearing, with temperature values ​​ranging from 27.2oC - 30.1oC, DO around 4.6 mg/l - 5.2 mg/l, salinity 28o/oo - 30o/oo, pH 7 - 8.2, the current speed is 0.468 m/s, and the light intensity is 0 lux - 3,616 lux. The growth pattern of all sampling results except sampling 2 (isometric) has a negative allometric result, with length and weight having a solid relationship. The fixed cage method is considered suitable for lobster rearing activities because the environmental parameters follow their natural habitat and the Fulton condition factor (K) value of more than 1. The greater the value of the Fulton condition factor (K), the healthier the condition lobster.
DIPLOMASI VAKSIN INDONESIA DALAM PROGRAM VAKSINASI NASIONAL: SOSIALISASI PENTINGNYA VAKSINASI DAN PENERAPAN PROKES BAGI MASYARAKAT SAMPANG DALAM PENCEGAHAN COVID-19 Maulidia, Febryanti Nur; Zam Zamy, Mohammad Wildhan Firmansyah; Violando, Wiga Alif; Solikin, Agus
SIYAR Journal Vol. 3 No. 1 (2023): January
Publisher : The Department of International Relations, The Faculty of Social and Political Sciences, UIN Sunan Ampel Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15642/siyar.2023.3.1.43-62

Abstract

For the success of the national vaccination program, Indonesia carries out vaccine diplomacy with various approaches, both bilateral and multilateral and involves all interested parties, with the main objective of opening access to vaccines to achieve the national interest, namely the success of overcoming the COVID-19 pandemic in Indonesia. The existence of a national vaccination program should be able to be followed by all citizens. However, in Sampang Regency, the enthusiasm of the community to vaccinate is very low. In addition, the lack of public awareness of Sampang to implement health protocols is also the cause of the high number of COVID-19 cases in Sampang. This research analyzes the role of Indonesia's vaccine diplomacy in the national vaccination program with a case study of socializing the importance of vaccination and the application of health protocols for the Sampang community in the effort to prevent COVID-19 using descriptive qualitative research methods. Socialization related to the importance of COVID-19 vaccination, the application of health protocols is very much needed to increase public awareness of Sampang in efforts to prevent and handle the COVID-19 pandemic. This socialization can not only be carried out by the government and health workers, but can also be started from oneself, and from the closest environment such as the head of the family or housewife who can carry out socialization in the family environment, among students through various community services, and religious figures through sermons or tausiyah so that the community also has a very important role in fighting the COVID-19 pandemic.
Eco-enzyme from Orange Peel as a Key Ingredient in Anti Acne Peel-off Gel Mask Zummah, Atiqoh; Bahri, Saiful; Violando, Wiga Alif; Tyastirin, Esti
Jurnal Ilmiah Biologi Eksperimen dan Keanekaragaman Hayati (J-BEKH) Vol. 11 No. 2 (2024)
Publisher : Department of Biology Faculty of Mathematics and Natural Sciences Universitas Lampung in collaboration with The Indonesian Association of Biology (PBI) Lampung Branch.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jbekh.v11i2.387

Abstract

This study aims to develop a peel-off gel mask formulated from orange peel eco-enzyme solution and its physical characteristics and antibacterial activity against Staphylococcus epidermidis. The resulting gel mask has organoleptic characteristics of transparent brownish color, thick gel consistency, and fresh sour-sweet aroma. Physical characteristic tests showed that the gel mask meets pharmaceutical requirements, namely: pH value 4.5-6.5, spreadability 5-7 cm, and drying time 15-30 minutes. The mask showed good homogeneity without aggregates, although it was a little difficult to peel off, but it was not easily torn, and had stable thermodynamic stability. Antibacterial tests revealed that the peel-off gel mask made from orange peel eco-enzyme was effective in inhibiting the growth of Staphylococcus epidermidis. The diameters of the inhibition zones of the P1, P2, and P3 masks were 2.5 ± 0.5 mm, 2.1 ± 0.35 mm, and 1.5 ± 0.5 mm, respectively. These results indicate the potential of eco-enzymes from orange peel as active ingredients for peel-off gel mask formulation for skin care, especially in inhibiting acne-causing bacteria.