scholarly journals Gracilaria spp. morphology cultured in brackish water pond Pantai Sederhana Village, Muara Gembong

2015 ◽  
Vol 13 (1) ◽  
pp. 94
Author(s):  
Dinar Tri Soelistyowati ◽  
Ida Ayu Amarilia Dewi Murni ◽  
, Wiyoto
Keyword(s):  
Water Quality ◽  
Brackish Water ◽  
Pond Water ◽  
Salinity Range ◽  
Shrimp Ponds ◽  
Shrimp Pond ◽  
Ramification Index ◽  
Water Pond ◽  
Physical And Chemical ◽  
Brackish Water Pond

<p class="NoParagraphStyle" align="center"><strong>ABSTRACT</strong></p><p class="NoParagraphStyle" align="center"><strong> </strong></p><p><em>Gracilaria </em>spp. is a euryhaline species of seaweed which can live in the marine and brackish water. Development of <em>Gracilaria </em>spp. culture in Bekasi is potential because this seaweed can be cultured in ex shrimp pond by polyculture system. The objective of this research was to evaluate the phenotype morphological characteristic of <em>Gracilaria </em>spp. based on and its relationship with shrimp pond water quality. <em>Sampling </em>was done at three shrimp ponds with a salinity range at 13.7–19.2 g/L. Phenotypical characteristics of <em>Gracilaria </em>spp. consisted of colour and thallus morfometrics, while measurement of water quality consisted of physical and chemical charactersof shrimp pond. The result showed that <em>Gracilaria </em>spp. generally had light brown colour. At salinity higher than 13.7 g/kg, the number of secondary thalli increased, the distance among internode tertiary thalli declined, and the number of ramification index increased. Salinity showed a positive correlation with remification index which was 0.571.</p><p> </p><p>Keywords: <em>Gracilaria </em>spp., remification index, phenotype, salinity, brackishwater culture</p><br /><p class="NoParagraphStyle"> </p><p class="NoParagraphStyle"> </p><p class="NoParagraphStyle" align="center"><strong>ABSTRAK</strong><strong></strong></p><p class="NoParagraphStyle"> </p><p><em>Gracilaria </em>spp. merupakan spesies rumput laut eurihalin yang dapat hidup di laut dan di perairan payau. Pengembangan budidaya <em>Gracilaria </em>spp. di Bekasi potensial dilakukan karena memanfaatkan tambak bekas budidaya udang dengan sistem polikultur. Penelitian ini bertujuan untuk mengevaluasi karakteristik fenotipe morfologi <em>Gracilaria </em>spp. dan hubungannya dengan kualitas air di tambak budidaya. <em>Sampling </em>dilakukan pada tiga tambak dengan kisaran salinitas 13,7–19,2 g/L. Karakterisasi fenotipe meliputi warna dan morfometrik talus <em>Gracilaria </em>spp., sedangkan parameter kualitas air meliputi karakter fisika dan kimia air tambak. Hasil menunjukkan talus <em>Gracilaria</em>s spp. umumnya berwarna coklat muda dan pada salinitas di atas 13,7 g/L menunjukkan jumlah talus sekunder meningkat, jarak internode talus tersier menurun, dan indeks percabangan meningkat (P&lt;0,05). Salinitas berkorelasi positif dengan indeks percabangan sebesar 0,571.</p><p> </p><p>Kata kunci: <em>Gracilaria </em>spp., indeks percabangan, fenotipe, salinitas, budidaya air payau</p>

scholarly journals Dominant Water Quality Variables Affecting Plankton Abundance in Traditional Brackish Water Ponds of Tiger Shrimp (penaeus monodon fabr.) in Pasuruan Regency, East Java Province

Omni-Akuatika ◽  
2018 ◽  
Vol 14 (1) ◽  
Author(s):  
Erfan Andi Hendrajat ◽  
Andi Sahrijanna
Keyword(s):  
Water Quality ◽  
Brackish Water ◽  
Penaeus Monodon ◽  
Natural Food ◽  
Aquatic Area ◽  
Pond Aquaculture ◽  
Tiger Shrimp ◽  
Water Quality Variables ◽  
Water Pond ◽  
Brackish Water Pond

ABSTRACTIn applying traditional brackish water pond aquaculture of tiger shrimp (Penaeus monodon), plankton is one of water micro organisms that plays an important role as natural food and stability indicator of water or aquatic environment in which life and growth of aquatic organisms depend on water quality variables, both physical and chemical properties. This research objective was to find out the effects of dominant water variables on plankton abundance in brackish-water pond. The research was conducted in traditional brackish water ponds of tiger shrimp in Pasuruan Regency, East Java Province. The research was conducted through direct measurements in the field and also collection of plankton and water samples. Those were then analyzed in the laboratory. Better change to analysis used in this study was regression model analysis was based on the smallest square method. Dependent variables was plankton abundance and independent variables were the water quality variables such as temperature, dissolved oxygen, salinity, pH, total suspended solid (TSS), nitrite, nitrate, ammonia, phosphate, iron (Fe), and total organic matter (TOM). The result showed that range of plankton abundance was 20.0-6,360 individuals/L with average 401.3 individuals/L. There was a significant relationship between plankton abundance and TSS which negatively affected plankton abundance as much as 0.52 or 52%. Based on index values of average dominance, variety, and uniformity, the brackish water pond water or aquatic area in this study was categorized as moderately stable, where plankton genera were well distributed and there was no genus dominating other genus.

scholarly journals APPLICATION OF INTEGRATED MULTI TROPIC AQUACULTURE CONCEPT IN AN ABRADED BRACKISH WATER POND

2016 ◽  
Vol 78 (4-2) ◽  
Author(s):  
Sri Rejeki ◽  
Restiana Wisnu Ariyati ◽  
Lestari Lakhsmi Widowati
Keyword(s):  
Water Quality ◽  
Growth Rate ◽  
Brackish Water ◽  
Specific Growth ◽  
Natural Food ◽  
Green Mussel ◽  
Central Java ◽  
Water Pond ◽  
Brackish Water Pond ◽  
Aquaculture Production

Currently, abrasion at the northern coastline of Central Java, Indonesia, is severe. One of the biggest abrasion area is in Kaliwlingi village (Brebes District), where 800 ha of brackish water ponds were submerged. Abrasion could wipe away or damage dykes on brackish water pond and the pond can no longer be used for aquaculture production. A 5 000 m2 of netting broken dyke of brackish water pond is used for semi–intensive cultivation of milkfish, tilapia, vanamae shrimp, green mussel and Gracilaria seaweed as an application of Integrated Multi Trophic Aquaculture (IMTA) concept. The aim of this study was to determine the aquaculture production in abraded dyke on brackish water pond by measuring the growth of milk fish, tilapia, vaname shrimp, green mussel and Gracilaria based on IMTA concept. The study was carried out from May to July 2015 at Kaliwlingi Village, Brebes district. The results showed Specific Growth Rate (SGR), i.e. milk fish 2.35 % d–1; tilapia 3.8 %·d–1 vanamae shrimp 3.75 % d–1; green mussel 2.8 % d–1 and Gracilaria 4.6 % d–1. Based on the result, the water quality is good and the availability of the natural food can support the growth of milkfish, tilapia, vanamae shrimp, green muscle and seaweed at broken dyke ponds with IMTA concept.  

The Effect of Low-Rate Sand Filtration and Modified Feed Management on Effluent Quality, Pond Water Quality and Production of Intensive Shrimp Ponds

Estuaries ◽  
1995 ◽  
Vol 18 (1) ◽  
pp. 116 ◽  
Author(s):  
J. Stephen Hopkins ◽  
Craig L. Browdy ◽  
Richard D. Hamilton ◽  
Joseph A. Heffernan
Keyword(s):  
Water Quality ◽  
Pond Water ◽  
Sand Filtration ◽  
Shrimp Ponds ◽  
Effluent Quality ◽  
Feed Management ◽  
Low Rate

scholarly journals Uncertainty Ontology for Module Rules Formation Waterwheel Control

2018 ◽  
Vol 5 (1) ◽  
pp. 66
Author(s):  
Zulfian - Azmi ◽  
Mahyuddin K. M. Nasution ◽  
Herman Mawengkang ◽  
M Zarlis
Keyword(s):  
Water Quality ◽  
Pond Water ◽  
Not Given ◽  
Water Turbidity ◽  
Control Module ◽  
Shrimp Pond ◽  
Several Variables ◽  
Uncertainty Model ◽  
Input Variables

Implementation of Uncertainty model has not given maximum result in forming rule on an inference of a case. For testing to determine whether water quality is high, medium and low. The input variables used are temperature, pH, salinity and Disolved Oxygen. Testing is done by looking at the water turbidity change in the shrimp pond, to determine the water quality. Its water quality determines in the control module of the waterwheel rotation.Rolling the waterwheel moves quickly if pond water quality is low, moving slowly if water quality is medium and immobile if water quality is good. And the establishment of the rule with the approach of knowledge of Ontology to determine the relation between several variables (temperature, Ph, Disolved Oxygen and salinity). Each variable is set to its certainty value in the form of fuzzy value. Next is determined the relation of the four variables for the formation of rule.

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