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All Journal Jurnal Ilmu dan Teknologi Kelautan Tropis Jurnal Perikanan dan Kelautan Berkala Perikanan Terubuk Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Jurnal Perikanan Universitas Gadjah Mada Aquacultura Indonesiana Asian Journal of Aquatic Sciences Unri Conference Series: Community Engagement Dinamika Lingkungan Indonesia
Dessy Yoswaty
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Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Decision Sciences, Operations Research & Management Earth & Planetary Sciences Environmental Science Immunology & microbiology Library & Information Science Social Sciences

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ANALISIS BAKTERI FECAL STREPTOCOCCUS DI PERAIRAN PANTAI SELAT RUPAT, PROVINSI RIAU Yoswaty, Dessy
Jurnal Perikanan dan Kelautan Vol 19, No 1 (2014)
Publisher : Fakultas Perikanan dan Kelautan Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jpk.19.1.67-77

Abstract

The higher activity of the community in coastal waters, together with the higher the lev-el of pollution from domestic sewage and industrial waste, impacts on the quality of marine waters. Domestic waste pollution (mainly the result of human excretion), can increase the number of microorganisms. fecal Streptococci bacteria can be used as an indicator of - marine pollution. Toxin content of fecal Streptococci bacteria, if it is in the human digestive tract, can cause diarrhea, nausea and abdominal pain. The study aims to analyze the distribution of fecal Streptococci bacteria in coastal waters of the Strait of Rupat. The research was conducted from March-April 2012 in P. Mentele, P. Rampang, P. Payung, P. Baru and P. Mampu, using the survey method. Fecal Streptococci bacteria was analyzed at the Laboratory of Marine Microbi-ology Faperika, Riau University. Total test of fecal Streptococci bacteria on KF Streptococci medium and identification of isolates was determined by biochemical tests (Cappuccino & Sherman, 2001). The analysis showed that total of - fecal Streptococci bacteria 1.5 x 102 to 5.2 x 105 cells/gram sample, colonies of bacteria growing red. Total of fecal Streptococci bacteria is highest in P. Mentele, while the lowest in P. Baru. The results of water quality in the Strait of Rupat was still below those of the standard threshold. Overall, the content of Fecal Strepto-cocci bacteria is low, not categorized as polluted waters 
Antibacterial Activities of Soft Coral Extract Lobophytum sp. towards Pathogenic Bacteria (Escherichia coli, Staphylococcus aureus, and Pseudomonas aeruginosa) Tanjung, May Juna putri; Yoswaty, Dessy; Effendi, Irwan
Jurnal Perikanan dan Kelautan Vol 25, No 2 (2020)
Publisher : Fakultas Perikanan dan Kelautan Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jpk.25.2.151-157

Abstract

Soft coral extract of Lobophytum sp. can inhibit the growth of pathogenic bacteria with a weak to very strong category. The purpose of this study was to determine the activity of Lobophytum sp. against pathogenic bacteria E. coli, S. aureus, and P. aeruginosa and analyze the concentration of Lobophytum sp. effective against pathogenic bacteria E. coli, S. aureus, and P. aeruginosa. Sampling was carried out in the waters of Pigago Island, West Pasaman Regency, West Sumatra. This research method is an experimental method and antibacterial activity test is carried out with agar diffusion diffusion technique. This soft coral extract has the potential to inhibit pathogenic bacteria. The highest inhibitory effect on E. coli bacteria was the highest yield at a concentration of 100% with a yield of 13.95 mm, in the S. aureus bacteria the highest yield at a concentration of 100% with a yield of 12.53 mm and in P.aureginosa bacteria at a concentration of 100% was 23.87 mm.
ANALYSIS OF THE POTENTIAL DEVELOPMENT OF MANGROVE FOREST ECOTOURISM IN KAMPUNG SUNGAI KAYU ARA, SIAK DISTRICT, RIAU PROVINCE Dessy Yoswaty; Irwan Effendi; Nursyirwani Nursyirwani; Joko Samiaji; Muhammad Razali
Berkala Perikanan Terubuk Vol 49, No 1 (2021): Februari 2021
Publisher : Fakultas Perikanan dan Kelautan, Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/terubuk.49.1.775-787

Abstract

The mangrove forest ecosystem in Sungai Kayu Ara Village, Sungai Apit Subdistrict, Siak Regency, Riau Province has a unique or distinctive appeal, which has the potential to be developed as a mangrove forest ecotourism destination. The research objective was to analyze the potential for developing mangrove forest ecotourism in Sungai Kayu Ara Village in realizing sustainable mangrove forest conservation. The method used in this research is the survey method, which was carried out in May-July 2020. Mangrove density data was taken using the line transect plot technique, which consists of 3 observation transects. Each transect has 3 plots, each plot measuring 10 x 10 m2. The identification results found 6 types of mangroves that grow in the mangrove forest area of Sungai Kayu Ara Village, namely Rhizophora apiculata, Avicennia alba, Bruguiera gymnorrihiza, Sonneratia alba, Nypa fruticans, and Xylocarpus granatum. The mangrove density value is 1234 ind / ha. The average value of the Tourism Suitability Index (IKW) is 76.75%. (S2 category), which is suitable for development as a mangrove forest ecotourism area. Mangrove forest ecotourism development strategies based on SWOT analysis include 1) Increasing stakeholder cooperation for mangrove forest conservation; 2) Developing facilities and infrastructure for the development of mangrove forest ecotourism; 3) Provision of information and promotion of manrove ecotourism through print and electronic media; and 4) Increased quality of skilled and skilled human resources for the development of mangrove forest ecotourism.
Coastal Ecotourism Potential of Sorake Beach, South NiasRegency in North Sumatra Province Mendrofa, Feronika; Yoswaty, Dessy; Ghalib, Musrifin
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 1, No 2 (2014): Wisuda Oktober Tahun 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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Abstract

Sorake Beach is located in South Nias Regency and facing directly to the Indian Ocean which possessed a wealth of natural and diverse appeal had potential for ecotourism development. This study aims to determine the condition and potential of natural resources that can be developed, to analyze and formulate the concept of ecotourism development strategy in Sorake.Suitability tourism index in Sorake was at suitable level (S2 suitability). The results showed the calculation results of the IFE (internal factors) and EFE (external factor) had a value of 2.92 and 2.91 respectively. The internal factors was stronger than external factors. The priority strategy of future development suggested making programs and environmental activities that environmentaly friendly and making tourist zoning plan.Keywords: Strategy Development, Ecotourism, Tourism Suitability Index, IFE and EFE.
THE USE OF MICROALGAE Chlorella vulgaris FOR REDUCTION OF POLLUTANT LEVELS IN SEA WATER OF MUARA ANGKE POLLUTED BY DOMESTIC WASTE Risma Tambunan; Aras Mulyadi; Dessy Yoswaty
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 6 (2019): Edisi 2 Juli s/d Desember 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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Abstract

ABSTRACT This research was conducted in April-June 2019, located at the Center for Environmental Technology Laboratory (PTL) - Agency for the Assessment and Application of Technology (BPPT), Geostech Building 820, Serpong Archipelago Puspitek, South Tangerang. The purpose of this study was to determine the growth of C. vulgaris microalgae cultured in Muara Angke seawater polluted by domestic waste and to analyze its ability to reduce pollutant levels based on chemical parameters from Muara Angke seawater polluted by domestic waste. The experimental design used was a Completely Randomized Design (CRD) with 3 treatments of different C. vulgaris concentrations consisting of 5% v / v, 15% v / v, and 25% v / v performed three times repetition and given control that was without the addition of C. vulgaris and observed physical parameters (Temperature) and chemical parameters (DO, pH, COD, Phosphate, Nitrate, and Ammonia). Data were analyzed statistically using Analysis Of Variance (ANOVA) and further tested using the LSD test to compare between treatments with a 95% confidence level. The results showed that algae C. vulgaris had the potential to reduce levels of pollutants in sea water polluted by domestic waste, and the best treatment in reducing levels of pollutants in sea water polluted by domestic waste was treatment C (25%) with the decrease in COD value of 75.76% , Phosphate at 80.72%, Nitrate at 91.76% and Ammonia at 76.17% so that the levels of pollutants in the media used are in accordance with quality standards for their designation.   Keyword: Chlorela vulgaris, domestic waste, COD, Phosphate, Nitrate, Ammonia
Participation of Local Community in Development Costal Ecotourism of South Cingkuak Island, West Sumatra Province Riadi, Matgus; Yoswaty, Dessy; Mulyadi, Aras
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 1, No 1 (2014): Wisuda Februari Tahun 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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Abstract

This research was conducted in January 2013 in South Painan Nagari Cingkuak Island District IV Jurai South Coastal District of West Sumatra Province. This study aims to determine the potential of marine ecotourism of Cingkuak Island and determine the level of community participation, the government and other stakeholders in the development of marine ecotourism. The method used in this study is a survey method. Data taken and observed consist of primary and secondary data. The sample selection of the interview conducted by using purposive sampling method.Cingkuak island has potential for marine tourism and a significant opportunity to develop a marine ecotourism. Ecosystems contained island ecosystem cingkuak like coral reefs, seagrass, mangrove and wealth of flora and fauna. Things that support marine ecotourism in the Cingkuak Island parameter water quality, geomorphology, climate, and adequate infrastructure. Community participation can be seen coming from the tour players. Not only from the local community but also the participation of domestic and foreign tourists.Keywords: Potential of Marine Ecotourism, Community Participation, Cingkuak Island
Sebaran Fraksi Sedimen Dasar Permukaan di Perairan Pantai Pulau Topang Provinsi Riau Mulyadi, Hade; Yoswaty, Dessy; ', Mubarak
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 2, No 1 (2015): Wisuda Februari Tahun 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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Abstract

Abstract:A study was conducted in december 2013 in coastal waters Topang Island RiauProvince, with a view to learn the environmental conditions under the deposition ofoceanography and physics. The method used is a method of surveys carried out at 12 stationswithout repetition and 2 times repetition on calculations of the quality of the waters .Theresults of research shows that bottom sediment surface waters can be grouped into threefaction sediment is sandy mud , muddy sand and sand .Sand faction dominating at anyresearch station with type 2 is sand and muddy sand .Based on the parameter of sediment asthe diameter of average (Mz), sorting ( ), skewness (Sk1) and kurtosis (KG), physicaloceanographic conditions in Western and Eastern parts of the island tend to be stablecompared to the North and South. Current speed of surface affect the distribution of thebottom sediment surface.Key words: bottom sediment surface., Coastal waters, Topang
ISOLATION OF PROBIOTIC BACTERIA CANDIDATES ISOLATED FROM BARRAMUNDI (Lates calcarifer) ANTAGONISTIC AGAINTS Vibrio alginolyticus Yoswaty, Dessy; ', Afrimansyah; ', Nursyirwani
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 2, No 1 (2015): Wisuda Februari Tahun 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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Abstract

Probiotic is an alternative subtance to prevent fish diseases which is environmentally friendly. The research purpose was to isolate potential probiotic to control bacteria pathogen in barramundi (Lates calcarifer) to control the bacteria pathogen. The probiotic bacteria candidates were isolated from intestine of barramundi by using the spread and streak methods on MRS and TSA media. The antibacterial activity was examinined by using disc diffusion agar method on Zobell 2216E medium. The results showed thirty eight isolates were found which consisted of coccus, white, orange and yellow colonies. Twelve isolates had inhibition against Vibrio alginolyticus,two isolates showed highest inhibition zone and antivibrio activities. The highest inhibition zone (10.04 ± 1,48 mm) and (9,50 ± 2,12 mm) and the antivibrio activities (4.04 mm) and (3.50 mm) were indicated by KPBU2-5 and KPMU2-6 isolates respectively.Keywords: Probiotics, Isolation, Barramundi, Antagonistic.
DISTRIBUTION PATTERNS AND POPULATION DENSITY OF GASTROPODS Terebralia sulcata IN ESTUARY OF PUTERI SEMBILAN RUPAT UTARA SUBDISTRIC Nasution, Syafruddin; Yoswaty, Dessy; ', Maryanto
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 2, No 1 (2015): Wisuda Februari Tahun 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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Abstract

ABSTRACTThis study was conducted in July 2014, located in the Putri Sembilan estuaryDistrict of Rupat Utara. Mangrove snails of T. sulcata as one of the foods favored ofRupat Utara coastal communities. This research aims to determine the patterns ofdistribution and population density of gastropods T. sulcata in estuary waters PutriSembilan District of Rupat Utara. The method used in this study was a surveymethod and determination of observation stations was determined by purpossivesampling method, where the location of the study divided into three stations. Theresults showed that the highest density of T. sulcata found at Station 2 which locatedat area of mangrove (± 100 meters from the station 1 towards the upper river) whilethe lowest density was found at station I (the mouth of the estuary of the river). Thedistribution pattern of mangrove snails T. sulcata overall was evenly which rangesfrom 0,01 - 0,05.Key words: T. sulcata, density, distribution patterns, Rupat Island.
Daya Hambat Ekstrak Kuda Laut (Hippocampus spinosissimus) terhadap Pertumbuhan Bakteri Vibrio alginolyticus Panjaitan, Grace P; Yoswaty, Dessy; Nursyirwani, Nursyirwani
Jurnal Perikanan dan Kelautan Vol 22, No 2 (2017)
Publisher : Fakultas Perikanan dan Kelautan Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jpk.22.2.18-23

Abstract

Tujuan dari penelitian ini adalah menguji daya hambat ekstrak kuda laut(Hippocampus spinosissimus) terhadap pertumbuhan bakteri Vibrio alginolyticus.Penelitian ini dilakukan pada bulan Desember 2016 sampai Januari 2017 di LaboratoriumMikrobiologi Laut Jurusan Ilmu Kelautan, Universitas Riau. Ekstrak etanol kudalaut memiliki kandungan kimia steroid/triterpenoid, saponin dan glikosida sertamemiliki efek sitotoksik Uji daya hambat dilakukan dengan metode eksperimen menggunakanempat konsentrasi ekstrak (100%, 50%, 25% dan 12,5%). Dari hasil penelitianyang dilakukan ditemukan bahwa rata-rata diameter zona daya hambat ekstrakkuda laut tertinggi terdapat pada konsentrasi 100% (3,67 mm) sedangkan yang terendahterdapat pada konsentrasi 25% (0,73%). Ekstrak kuda laut mampu menghambatpertumbuhan bakteri V. alginolyticus dengan potensi lemah dengan nilai rata-rata diameterzona daya hambat <5 mm. Ekstrak kuda laut cenderung bersifat bakteriostatik.
Co-Authors ', Afrimansyah ', Frisilia ', Maryanto ', Mubarak ', Nursyirwani ', Thamrin Abdurrahman, M. Adelina Adelina Afrimansyah &#039; Afrizal Tanjung Algino Panuntun Akbar Andika Sitohang Angelia E Bernike Zebua Anggit Wondy Satrio Antonius &#039; Aras Mulyadi Aras Mulyadi Aras Mulyadi Mulyadi Arbaeyah &#039; Ardiah, Siti Aznardi, Shodikin Batubara, Ummi Mardiah Bintal Amin Bintal Amin Darina Darina Darma Bagus Saputra Devi Ambarwaty Oktavia Dewi, Shinta Rafida Dewita Dewita Domo, Attur Mudzy Domo, Attur Mudzy Efriyeldi &#039; Efriyeldi, Efriyeldi Eka Saputra Elizal &#039; Elizal, Elizal Eriani, Eti F. Feliatra F. Feliatra F. Feliatra, F. Feliatra Fahriansyah Fahriansyah Febby aprilliza Feffiana M Amin Feliatra &#039; Feliatra -, Feliatra Feliatra Feliatra Feliatra, Feliatra Feronika Mendrofa Gustasya, Yosy Hade Mulyadi Hasyimi, Wahid Hendra Kharisma Hotdholy destrinanda Ida Rahayu Simanjuntak, Ida Rahayu Iesje Lukistyowati Ilbi Candra Yani Ilcia Teshi Diafana Indra Bayu Pratama Irvina Nurrachmi Irvina Nurrachmi Irwan Efendi Irwan Efendi, Irwan Irwan Effendi Irwan Irwan Ismail Abdurrahman Siregar Joko Samiaji Jung jung Maranata Juni Artha Hasibuan Kaprisal, Kaprisal Kelly Fuadi, Kelly Khairul Mukmin Lubis Kurniawan, Mohd Rizky Lucky Rahman Lukystyowati, Isye Matgus Riadi Mhd. Fadhillah, Mhd. Fadhillah Mirad, Awis Monika, Siska Mubarak Mubarak Muhammad Alam Mulia Hasibuan Muhammad Razali MUHAMMAD RIZAL Musrifin Galib Musrifin Ghalib Niken Ayu Pamukas Nofri Andri Yulan Nursyirwani &#039; Nursyirwani Nursyirwani Nursyirwani Nursyirwani Oktarina, Ayu Panjaitan, Grace P Perie Anugraha Wiguna Prakasa Mustanto Prasetya, Dandy Ranap Junani Sari Rendy Lani Dinata Risma Tambunan Rizki, Fariza Rohadatul Aisy Romeo &#039; Saharudin Saharudin Saputri, Apriliana Eka Sari, Desy Mutia Sari, Nian Setiawan, Ilham Shodikin Aznardi Sinuraya, Tri Setia Darma Siregar, Meiyanto Siringo-ringo, Irpan suriadi Siti Ardiah Siti Nursubadriah Situmorang, Adrian Sofyan Husein Siregar Sri Melinda Citra Syafruddin Nasution Syahril Nedi Syaifuddin Nasution T Ersti Yulika Sari Tanjung, May Juna putri Thamrin Thamrin &#039; Thamrin Thamrin Trisla Warningsih, Trisla Wahyuni, Inka Yesi Yohana Esteria Yulinda, Emelda Zainuri -, Zainuri Zulkarnaini Zulkarnaini Zulkifli &#039; Zulkifli Zulkifli Zulpikar &#039;