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All Journal Sainteks METAMORFOSA Journal of Biological Sciences BioEksakta : Jurnal Ilmiah Biologi Unsoed Jurnal Litbang Provinsi Jawa Tengah
Dwi Sunu Widyartini
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Computer Science & IT Economics, Econometrics & Finance Education Environmental Science Immunology & microbiology Mechanical Engineering Medicine & Pharmacology Public Health Social Sciences Veterinary

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POSISI TANAM RUMPUT LAUT DENGAN MODIFIKASI SISTEM JARING TERHADAP PERTUMBUHAN DAN PRODUKSI Eucheuma Cottonii DI PERAIRAN PANTURA BREBES A. Ilalqisny Insan; Dwi Sunu Widyartini; Sarwanto Sarwanto
JURNAL LITBANG PROVINSI JAWA TENGAH Vol 11 No 1 (2013): Jurnal Litbang Provinsi Jawa Tengah
Publisher : Badan Perencanaan Pembangunan, Penelitian dan Pengembangan Daerah Provinsi Jawa Tengah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36762/jurnaljateng.v11i1.298

Abstract

Eucheuma cottoni is a kind of seaweed which is potential as an export comodity and commonly culturated in the coastal area Brebes regency has a coastal line of approximately 53 km including 14 village and 5 subdistrict from Randusanga wetan to Limbangan Losari This coastline has not been used optimally. The demands for the seaweed is increasing, so that the seaweed culture should be developed continually. This study was aumed to find out the growth and production of Eucheuma cottoni which is the highest and planning position by modifying net system. This study has been done from June-October 2012. The experimental design was randomized block design. The treatment include (I) Planting position, vertical : (P1), horizontal (P2), system modification: (M1) single string, (M2)waring net (M3) tube net, (M4) tubular net. The growth of cottoni is increasing following the age either for the vertical on horizontal by net system modification. The highest result(10,83 g/days) were reached for the treatment of open waring net (7150 g/m2), with the water condition of in Pandansari with salinity 32-35 ‰ for Temperatur 27-30 C and pH 7-8.
MENINGKATKAN PERTUMBUHAN DAN PRODUKSI RUMPUT LAUT Gracilaria gigas DENGAN MODIFIKASI METODE BUDIDAYA DAN SISTEM JARING Dwi Sunu Widyartini; H. A. Ilalqisny Insan; Warsinah Warsinah
Sainteks Vol 9, No 1 (2012): SAINTEKS
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30595/sainteks.v9i1.289

Abstract

Production the Gracilaria. gigas Harv. is cultivation is influenced by cultivation methods and net systems used as well as environment factor. This research aim to know the growth and production of the Gracilaria gigas using different cultivation methods and net systems and also to determimine the different cultivation method and net system which result in the highest growth and G. gigas production in Selok Adipala ocean in Cilacap. This research used an experimental method with Splitplot Design in 3 times replication for each treatment combination. Research result indicate that the different of cultivation methods and net systems yield different seaweed growth and production. The highest growth was yielded from G. gigas use the modification of floathing method with double nets system that is equal to 4.25,00 g/day. G. gigas using the floathing method with apit net system yield that was equal to 1.610,00 g/ m2 of cultivation sea weed on Selok Adipala ocean in Cilacap Keywords: cultivation methods and net systems, Gracilaria gigas, Selok Adipala ocean in Cilacap
POTENSI Gracilaria canaliculata SEBAGAI PENGHASIL BIOETANOL ASAL PANTAI MENGANTI KEBUMEN DAN PANTAI KARANG BOLONG CILACAP Rizal Berlian Novella; Dwi Sunu Widyartini; Romanus Edy Prabowo
Metamorfosa: Journal of Biological Sciences Vol 9 No 1 (2022)
Publisher : Prodi Magister Ilmu Biologi, Fakultas MIPA, Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/metamorfosa.2022.v09.i01.p09

Abstract

Seaweed is a source of foreign exchange and a source of income for coastal communities. Besides being used as food, drink, and medicine, seaweed which is rich in cellulose is very useful to become bioethanol. Bioethanol is used as a raw material for the manufacture of ethanol derivatives. The research objective was to sea the biomass and bioethanol content in Gracilaria canaliculata seaweed from Karang Bolong Beach, Cilacap, and Menganti Beach, Kebumen. Analysis of bioethanol data was carried out using the T-test with the SPSS program to determine whether there were differences in the bioethanol content of Gracilaria canaliculata from Menganti Beach, and Karang Bolong Beach, while the environmental monitoring test with biomass used the PRIMER 7 program for the most influential environmental factors. The results of the study showed there is evidence of environmental factors at Menganti Kebumen Beach and Gracilaria canaliculata biomass, the most influential of which are nitrate. The results of the test to maintain environmental factors of Menganti with Gracilaria canaliculata seaweed biomass using the BIOENV Primer 7 program analysis showed a fixed value on the nitrate display with a value of 0.852 while in the waters of Karang Bolong the value was recorded at 0.79. The T-test results showed no significant difference in the bioethanol content of Gracilaria canaliculata from Menganti Beach, Kebumen, and Karang Bolong Beach, Cilacap. Gracilaria canaliculata from Menganti Beach, Kebumen, produced an average bioethanol content of 7.07%, while those from Karang Bolong Beach Cilacap produced an average bioethanol content of 7.21%.
Komposisi Jenis dan Kepadatan Rumput Laut Hydrokoloid berdasarkan Karakteristik Dasar Perairan di Daerah Intertidal Nusakambangan Timur Cilacap Dwi Sunu Widyartini; Achmad Ilalqisny Insan; Kamsinah kamsinah
BioEksakta : Jurnal Ilmiah Biologi Unsoed Vol 2 No 4 (2020): BioEksakta
Publisher : Fakultas Biologi Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.bioe.2020.2.3.3568

Abstract

ABSTRACT Hydrocolloid seaweed is seaweed which contains agar, carrageenan and alginate, which are widely used as industrial raw materials. This study aims to determine the type composition of hydrocolloid seaweed and its density based on the characteristics of the bottom waters in the intertidal area of ​​East Nusakambangan Cilacap. The waters of East Nusakambangan have a central coral beach and a hollow coral beach which has a substrate in the form of sand, coral, volcanic rock, and coral fragments. This study used a survey method and sampling using a transect, a perpendicular line of the coast towards the sea, each transect line was placed with a quadrant plot (1 x 1m2) randomly selected on hard and soft substrates. The results of this study, the coral substrate on the two beaches obtained 2-8 types of hydrocoloid seaweed, with the highest composition of seaweed species of 57.6% on hard substrate with the highest density in the Gracilaria gigas species; 440.6-1239.7 g / m2, Gracilaria gigas has a Dichotomus branching type with a cylindrical talus shape. In the mixed substrate on the coast of Karang Tengah, there were 4 types of Hydrocoloid seaweed with a composition of 46.3% hydrocoloid species with the highest density in the species Padina australis; 387.7g / m2. Padina australis sheet and unbranched talus form Keywords: hydrocolloid, composition, East Nusakambangan, Intertidal
KEANEKARAGAMAN DAN DOMINANSI RUMPUT LAUT HIDROKOLOID PADA SUBSTRAT YANG BERBEDA DI PERAIRAN PANTAI KARANGTENGAHNUSAKAMBANGAN CILACAP Bayu Ardiyanto; Achmad Ilalqisny Insan; Dwi Sunu Widyartini
BioEksakta : Jurnal Ilmiah Biologi Unsoed Vol 2 No 3 (2020): BioEksakta
Publisher : Fakultas Biologi Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.bioe.2020.2.3.2999

Abstract

The waters of Karangtengah Nusakambangan Cilacap have various types of substrates, namely sand, coral and mixture. Beach conditions with many types of substrates allow various species of seaweed to grow. Information regarding the diversity and dominance of seaweed producing hydrocolloid species has not been much studied in the waters of Karangtengah Beach. This study aims to determine the diversity and dominance of seaweed producing hydrocolloids on different substrates in the waters of Karangtengah Nusakambangan Cilacap. This study uses a survey method with a sampling technique that is the selected random transect method. Six transect lines were made perpendicular to the coastline and the distance between transects was 25 m. Each transect was made three plots, each plot measuring 1x1 m based on the substrate (coral, sand, and mixture). The main parameters observed were the amount of biomass and the number of species. Supporting parameters observed were environmental factors namely temperature, salinity, pH, current speed and depth. The number of hydrocolloid seaweed species found was 10 species of seaweed with details of 5 alginate-producing species, 3 agar-producing species, and 2 carrageenan-producing species. The diversity index value in the coastal waters of Karangtengah between 0,6-2,0 was classified as moderate diversity. The dominance index value in the coastal waters of Karangtengah between 0,2-0,6 was classified as low dominance.
Co-Authors A. Ilalqisny Insan Achmad Ilalqisny Insan Bayu Ardiyanto H. A. Ilalqisny Insan Kamsinah Kamsinah Rizal Berlian Novella Romanus Edy Prabowo Sarwanto Sarwanto Warsinah Warsinah