This research was conducted in October 2019 to determine the effect of differences in the addition of KH2PO4 concentrations and the concentration of microalgae Scendesmus vacuolatus with experiment method. The results showed significant effect was found on differences in microalgae concentration and KH2PO4 concentration. KH2PO4 with the concentration of 8 ppm is the most influential on decreasi…
This research was conducted on 15 June-24 July 2019 in the Unit Pelaksana Teknis Daerah Balai Perikanan Budidaya Air Laut dan Payau (UPTD BPBALP Teluk Buo), West Sumatera. This study aims to determine the effect of stocking density and the best stocking density on growth and survival of Barramundi (Lates calcarifer) seeds. The method used in this study is an experimental method using a non fact…
This research was conducted in April to June 2018 in the Dumai Sea Waters of Dumai City, Riau , Privince. The purpose of this study was to determine the level density of C. perfringens and heterotrophic bacteria, analyze the level of resistance of C. perfringens and heterotrophic bacteria to antibiotics. The method used in research is an experimental method. Biochemical and resistance test …
This research has been carried out in August until November 2019. Samples were taken in the area of Bandar Bakau, Dumai City. Phytokimia test activities are carried out at the Laboratory of Organic Chemistry and Natural Materials, Faculty of Mathematics and Natural Sciences, while the antibacterial test is carried out at the Marine Microbiology Laboratory of the Faculty of Fisheries and Marine.…
This research was conducted from 24 June to 6 July 2019 in the Regional Technical Implementation Unit of the Seawater and Brackish Aquaculture Fisheries Center (UPTD BPBALP Teluk Buo), West Sumatra. This study aim to determine the effect of Ammonium Sulfate ((NH4)2SO4) with different concentrations on the growth rate of Nannochloropsis oculata microalgae population. The method used in this stud…
This research was conducted in June to July 2019. It aimed to analyzed the vulnerability and the shoreline change of coastal area of Padang Pariaman Regency, West Sumatera Province. Survey method with direct field observations were applied and different satellite imageries were also used to find out the shoreline change of coast under study. The results showed that there five categories of chan…
This Research was conducted in June 2019 to determined the type of anemone and clown fish and availability of clown fish on anemone population in Tikus Island Bengkulu Province. Two sampling points were surveyed in East side of Tikus island. The result showed that there were 2 species of anemone, Heteractis crispa and Heteractis magni island. 15 ind/500m2 of A. ocellaris were found in sampling …
Coral reefs are one of the ecosystems that have ecological functions for marine life, including for providing habitat for reef fish. Coral fish are marine biota that are living-in associated with coral reefs. This study aims to determine the abundance of reef fish, the condition of coral reefs and the relationship between abundance of reef fish and coral reefs. This research was conducted in Ju…
The research was carried out in July 2019 at the Fish Quarantine Station Laboratory of Quality Control and Safety of Pekanbaru Fishery Products and the Genetic Laboratory of the Department of Biology, Faculty of Mathematics and Natural Sciences, University of Riau. The purpose of this study was to determine the bacteria found in the intestines of mangrove mud snakes (Cerberus rynchops) that…
The aim of this study is to determine the water quality, the particle size (mm) and the organic matter content sediment, the type and abundance of epipelic diatoms, and the effect of particle size and organic matter content of the sediment on the abundance of epipelic diatoms at Bayur Bay Waters. This study was conducted in June - July 2019. The survey method was applied in this study and sampl…
This research was conducted in April-May 2019 in the waters of Poncan Island, North Sumatra Province, which aims to determine the large nutrient content of substrate (nitrate and phosphate), the level of seagrass density Enhalus acoroides, and to determine the effect of nutrient content of the substrate on the density of seagrass Enhalus acoroides. Determination of the research station by purpo…
This research was conducted in May 2018 in the waters of Teluk Buo, Padang, West Sumatra. The purpose of this study was to determine the environmental quality of the Teluk Buo waters, especially to determine the abundance of macrozoobenthos and determine the relationship between sediment organic matter and abundance of macrozoobenthos. The method used in this study is a survey method. The resul…
This research was carried out in July to August 2019. It aimed to learn the shape and the abundance of microplastics in the coastal area of Bungus Bay, West Sumatra Province. Survey method was applied and PVC pipe was used to collect sediment samples from three different stations with three sampling points on each station. The results showed that the abundance of microplastics were significantl…
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), Building 820 Geostech, PuspitekSerpong, South Tangerang. The purpose of this study was to determine the biogas production from S. platensis microalgae grown in polluted domestic waste media from MuaraAngke waters …
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 t…
This research was conducted in April to Mei 2019 to determine the content of organic matter and abundance of phytoplankton, to find out differences in organic matter and phytoplankton abundance between station and to know the relationship between organic matter content and phytoplankton abundance as reference for determining the condition of the Sungai Guntung estuary, Kateman Sub-district, Ind…
Organic matters from high anthropogenic activities on Sungai Indragiri Estuary Indragiri Hilir Regency Riau Province can cause several impacts to marine environment. Makrozoobenthos as bio-accumulation organism can be indicator for organic matter consentration in . The aim of this research is to determine correlation between organic matter consentration and abundance of makrozoobenthos in sedim…
Artemia salina is a natural feed that is widely used in fish and shrimp hatcheries due to of its good nutritional content. This research was conducted in August 2019. This study aims to determine the effect of different types of feed on the growth rate of A. salina on a laboratory scale. The method used in this study was an experimental method that uses a completely randomized design (CRD) 1 fa…
This study aims to determine the type, abundance and distribution patterns of gastropods in the mangrove ecosystem of Tanjung Balai District. This research was conducted in March 2019 in the mangrove ecosystem of Tanjung Balai District, Asahan Regency, North Sumatra Province. The method used in this study is survey method by determining the location of the station using purposive sampling metho…
Dinoflagellate is a large of microalgae groups. Its abundance was dependent on nitrate and phosphate content. The research was conducted in September 2018 that located at waters of Poncan Gadang Island, Central Tapanuli Regency. The aims of this research was to analyze nitrate and phosphate content, identification of species of epiphyte dinoflagellates, and the relationship between nitrate and …