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Dwi Mardhia
Fakultas Peternakan Dan Perikanan, Universitas Samawa
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Economics, Econometrics & Finance Education Engineering Environmental Science Health Professions Immunology & microbiology Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mathematics Public Health Social Sciences Other

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Identifikasi Jenis Fioplankton di Tambak Udang Vannamei (Litopenaeus Vannamei) LSO AV3 Kecamatan Utan, Kabupaten Sumbawa Yadi Putra Mansyah; Dwi Mardhia; Yudi Ahdiansyah
Indonesian Journal of Applied Science and Technology Vol. 1 No. 1 (2020): Edisi Maret 2020
Publisher : Indonesian

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Abstract

Phytoplankton play a very important role in a pond waters. Its ecological function as a primary producer and beginning of a chain in the food chain. The presence of phytoplankton in the waters can also describe the characteristics of a waters. The purpose of this study was to analyze the abundance, diversity, and uniformity of phytoplankton domination in the LSO AV3 pond, Utan District, Sumbawa Regency. This research has been carried out in Motong Village, Utan Subdistrict, Sumbawa Regency for 3 months from (January-March 2019) sampling using plankton net identification of phytoplankton species conducted at the AV3 LSO laboratory using a microscope then counted using a hand counter. In the research location, 4 classes were found, namely cyanophita, chloropyta, diatom and dinoflagellate. The highest abundance analysis of phytoplankton was in the chloropyta class with 22,720,000 (cell / ml) abundance, and the lowest was dinoflagellate with the lowest abundance of 5,140,000 cell / ml. , Diversity is with a value of 2.81 Uniformity that is with the amount of 0.80 and dominance is by the amount of 0.10.
Analisis Kelimpahan Kepiting Bakau (Scylla sp.) di Kawasan Hutan Mangrove Kecamatan Alas Barat Kabupaten Sumbawa Muhammad Zulfiqri; Dwi Mardhia; Dedi Syafikri; Syamsul Bachri
Indonesian Journal of Applied Science and Technology Vol. 1 No. 1 (2020): Edisi Maret 2020
Publisher : Indonesian

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Coastal District of Alas Barat has mangrove forest resources that have been degraded to environmental pressures due to human activities that is the conversion of land into pond areas. Mangrove ecosystems is an important role for marine and coastal ecology, which is the habitat of mangrove crabs (Scylla sp). Mangrove crab is a high commercial value fishery commodity. This study aims to determine the abundance of mangrove crabs (Scylla sp) in the mangrove forest area of ??Alas Barat District. The method used in this research is descriptive method with survey techniques. The research area is divided into 3 stations. The mangrove crab found was a type of Scylla serrata and Scylla paramamosain. The highest abundance of mangrove crabs was found at Station 1 (Gontar Baru) at 54.55%, followed by Station 2 (Karang Padak) at 23.23% and the lowest at Station 3 (Labuh Mapin) at 22.22%. The highest abundance at Station 1 type Scylla serrata is 11.66 ind / 100m² and the lowest at station 3 is 1.66 ind / 100m² while for Scylla paramamosain type, the highest abundance is at station 1 at 6.33 ind / 100m² and the lowest at station 2 as much as 5 ind / 100m².
Karakteristik Habitat Peneluran Penyu di Calon Kawasan Konservasi Perairan Taman Pesisir Lunyuk dan Tatar Sepang Lalu Ilham Syaputra; Dwi Mardhia; Dedi Syafikri
Indonesian Journal of Applied Science and Technology Vol. 1 No. 2 (2020): Edisi Juni 2020
Publisher : Indonesian

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The sandy beach where turtles lay their eggs is a natural incubator and has a suitable environment for the development of turtle embryos. Microclimate suitable for incubation of turtle eggs arises from interactions between physical characters, beach compilers, the local environment and eggs in the nest. One of the locations where sea turtles land and lay eggs in West Nusa Tenggara Province is on the beach of Lunyuk, Sumbawa Regency. Receiving sea turtles is a protected endangered species, it is necessary to carry out conservation activities to protect and save sea turtles. To support efforts to support, it is necessary to support locations where turtles lay their eggs. Like discussing research on landing sites and turtle nesting sites. The purpose of this study was to analyze the level of suitability of habitat characteristics for turtle nesting in the Lunyuk beach area. The research method uses the survey method. Survey activities include field observations and collecting primary data. Data analysis was performed using the weighting and scoring method. Based on observations it can be seen, the slope of the beach which is the location of spawning is 6.54 - 11.1%, substrate temperature 27 ° C - 32 ° C, humidity substrate 25% - 40%. While the percentage of vegetation is 40% - 57.1%. From the station visit, stations 1 and 2 are quite suitable, while stations 3, 4 and 5 are categorized according to the location of turtle nesting.
Penerapan Protokol Kesehatan dan Dampak Covid-19 Terhadap Harga Komoditas Perikanan dan Aktivitas Penangkapan Dwi Mardhia; Neri Kautsari; Lalu Ilham Syaputra; Wahyu Ramdhani; Chandra Okta Rasiardhi
Indonesian Journal of Applied Science and Technology Vol. 1 No. 2 (2020): Edisi Juni 2020
Publisher : Indonesian

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Abstract

The COVID-19 pandemic is a problem faced by almost all countries in the world including Indonesia which has implications for the fisheries sector. Fisheries sector players including vulnerable groups affected by COVID-19. This study aim is to analyze the application of health regulation that contain understanding and application of health regulations on fisheries and the impact of COVID-19 on commodity prices and fishing activities. The method used in this study is an online survey through a questionnaire using Google forms and in-depth interviews through the telephone network involving 45 respondents of fishermen. The survey results show that 93% of fishermen knew enough about the COVID-19 pandemic, 84% were quite worried, 7% were very worried and 9% had no effect. Most fishermen have implemented health protocol efforts including activities to wear masks, avoid shaking hands and washing hands with soap. Pandemic has an impact on the decline in fishery commodity prices by 10%. The impact of the pandemic on fishing activities is the delays in the delivery of commodity products, the decrease in the number of fishing, the decrease in the number of catches and demand for catches and the decrease in fishermen's income.
Analisis Kualitas Perairan untuk Budidaya Ikan Air Tawar di Bendungan Batu Bulan Yuni Intan Lestari; Dwi Mardhia; Dedi Syafikri; Neri Kautsari; Yudi Ahdiansyah
Indonesian Journal of Applied Science and Technology Vol. 1 No. 4 (2020): Edisi Desember 2020
Publisher : Indonesian

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This study aims to analyze the water parameters that support fresh fish cultivation in the Batu Bulan dam, Maman Village, Moyo Hulu District. The study used a survey method at three observation locations, inlet, center, and outlet of the dam on water quality, including temperature, brightness, substrate, pH, dissolved oxygen (DO), turbidity, salinity, ammonia, Phosphate, and depth. The results showed that the inlet temperature ranges from 29,32oC, in the middle ranges from 29,91oC, and the outlet is 29.11oC. The average brightness at the inlet is 41.04 cm, the middle is 48.20 cm, and the outlet is 34.16 cm. The substrate at the inlet and in the middle is muddy while the outlet is sandy. The pH average in inlet is 6,33, in the middle is 6,58, and outlet 6,53.  Dissolved oxygen (DO) in the inlet range is 5.34 mg/l, in the middle is 5.51 mg/l, and in an outlet, it is 5.85 mg/l. Turbidity in the inlet range is 2,44 NTU, in the middle 2,67 NTU, and an outlet is 3,26 NTU. Salinity in all locations is 0 ppt. Ammonia in the inlet range is 1,01 mg/l, in the middle 0,69 mg/l and outlet is 1,1 mg/l. The average Phosphate at the inlet is one mg/l, in the middle and outlet is 0 mg/l. The status of the water eligibility for aquaculture is that the inlet and middle of the dam are suitable for cultivation, while those at the outlet are less feasible.
Co-Authors Aan Saputra Agum Rhismanda Ana Merdekawaty Ardiansyah Ardiansyah Asmini Asmini Chandra Okta Rasiardhi Dedi Syafikri Dedy Syafikri Didit Abdillah Dira Anggrayni Djodi Arya Pratama Eka Putri Septiani Erma Suryani Fahmi Yahya Fahmi Yahya Febri Jumati Hasani Firda Amelia Fitri Asriyanti Hermansyah Hermansyah I Gusti Made Sulindra I Made Sentaya Ieke Wulan Ayu Khatimah Kusumawardani, Wening Lalu Ilham Syaputra Lalu Ilham Syaputra Lukman Hakim Marsela Muhammad Nur Muhammad Zulfiqri Neri Kautsari Nining Andriani Nining Andriyani Nova Novitasari Osi Saputra Rahman Firdaus Rudi Masniadi Siti Khadijah Siti Khodijah Sukarne Sukarne Sukma Dewi Syafruddin Syafruddin Syaifuddin Iskandar Syamsul Bachri Syamsul Bachri Syarif Fitriyanto Tursina Ratu Viktor Abdullah Wahyu Ramdhani Yadi Hartono Yadi Putra Mansyah Yudi Ahdiansyah, Yudi Yulianti Yuni Intan Lestari Yunita Safitri