Anabas testudineus is type of fish commonly inhabit the Lubuk Siam Lake in Riau. However, information on reproductive biology of the fish is rare. To understand the biologycal aspects of this fish, a study was conducted. The fish was sampled once at two weeks for a month period, from July to August 2019. Parameters measured were sex ratio, gonad maturity level, Gonad Somatic Index (GSI), fecund…
The fisheries potency in the estuary of Rawa Mekar Jaya Village is high. A research aims to determine the fish community structure in that estuary was conducted in April-July 2019. Fish samples were taken in 3 stations, in the mangrove area (ST-1), reforestation mangrove area (ST-2) and around the residential area (ST-3). The fishes were captured using fishing rod, net traps (mesh size 1-2 inch…
Several activities in the Bakuok Lake contribute the input of organic and inorganic matters to the waters, and thus increase the concentration of nitrate and phosphate in the water. A research aims to understand the relationship between organic matter and nutrients (Nitrate and Phosphate) in the Bakuok Lake has been carried out in June-July 2019. There were three stations namely station 1 (arou…
Slaughterhouse liquid waste contains fair organic materials that can be used as nutrient source for growing Spirulina sp. The purpose of this study was to determine the effect of fermented slaughterhouse waste as alternative nutrients for the growth of Spirulina sp. This study was conducted in September-October 2019. RAL method was applied with 5 different concentrations, there were 0 ml/4L (P0…
Mangrove ecosystem in the Apar Village inhabited by numerous aquatic organisms, including bivalve. A research aim to determine the community structure of bivalve in the mangrove ecosystem has been conducted on July 2019. There was 2 station, with 3 plots/station and 5 subplots/plot. In each subplot, the bivalve were collected by hand. Result shown that there was 3 species of bivalve, namely Pol…
Peat swamp waters in Sontang Village are inhabited by many fish species. To understand the types of fish in the peat swamp waters, this research was carried out, which was carried out in May 2019. Sampling was conducted three times, using fishing rods, nets and fish traps. Fish that have been caught then identified. The results show that there are 3 orders, 12 families and 19 species of fish th…
The water in the pond at PT Bumi Siak Pusako-Pertamina Upstream Eor Plant Gathering Station is polluted by oil. The presence of oil in pond water triggers gene mutations in bacteria so that the bacteria can produce biosurfactants to degrade oil. The aim of this study was to obtain a biosurfactant-producing bacterial isolate and was carried out in January - February 2019. Bacterial isolation was…
Primary productivity is the conversion of solar energy and nutrients to living biomass through photosynthesis. A research aimed to understand the primary productivity based on oxygen method was conducted in July-August 2019. There were three sampling stations namely Station 1 (inlet area), Station 2 (in the middle of the lake) and Station 3 (in the end of the lake). In each stations, there were…
Phytoperiphyton is a microscopic organism that attach on submerged substrate. Research aims to determine the type and abundance of phytoperiphyton on plastic substrate has been carried out in June- July 2019 in the Bunter Lake. There were three sampling stations, namely Station 1 (inlet), Station 2 (in the middle of the lake) and Station 3 (in the end of the lake ). The number of substrates in …
Hemibagrus nemurus is one of freshwater fish that inhabit the Kampar Kiri River. This research aims to determine type of food present in the fish’s stomach. To understand the type of food consumed by H. nemurus, a research has been conducted in July to August 2019. Sampling was conducted 4 times, once/ 2 weeks for a two months period. The fish was captured using nets. There were 65 fishes cap…
In the Riau University area there are several shallow waters. Activities around the waters may contributed the in put of organic and inorganic matters into the waters and influenced limnology condition of waters. A research aims to know the limnological condition in waters in University Riau area has conducted Maret-April 2019 Sampling was carried out in three stations, namely station 1 ( aroun…
Bagroides melapterus is a type of freshwater fish that inhabit the Kampar Kiri River. Information on biological, including morphometric, meristic and growth patterns of that fish, however, is rare. To understand the morphometrical and meristical characteristics and also the growth pattern of the fish, a research has been conducted in July- August 2019. There were 53 fishes (158-290 TL mm and 50…
Peat water has a low nutrient content, but it can be enriched by addition of fermented mixed slaughterhouse and tofu industry waste. This media may be used for growing Chlorella sp. The purpose of this study was to determine the effect of fermented mixed slaughterhouse and tofu industry waste as alternative nutrients for the growth of Chlorella sp. This study was conducted in September-October …
Peat water has a low nutrient content, but it can be enriched by addition of fermented mixed tofu industry and restaurant waste. This media may be used for growing Chlorella sp. This study aims to determine the effect of fermented mixed tofu industry and restaurant waste addition as alternative nutrients for the growth of Chlorella sp. This study was conducted in September-Oktober 2019. RAL met…
The purpose of this study was to determine the effect of The Effect of Brand Trust, Brand Image On Purchasing Decisions And Customer Satisfaction Brands Dunlop Tires in Pekanbaru. The populationin this study include consumers who naver make purchases Brands Dunlop Tires in Pekanbaru. Collecting data in this study using a questionnaire as instrument to prove the results of the study, the hy…
This study aims to determine the effects of locus of control, self efficacy on Islamic work ethics and employees performance at BMT Al-Ittihad Pekanbaru. The population in this study includes all employees at BMT Al-I-ttihad Pekanbaru, totaling 45 people. Primary data was collected by questionnaire as an instrument to prove the result of the research, to test the hypothesis in this study i…
The purpose of this study was to determine the effect of competence on employee performance through the work motivation of PT. Pos Indonesia (Persero) Pekanbaru Branch. This research was conducted at PT. Pos Indonesia Pekanbaru, which focuses on shipping, is located at Jl.Jendral Sudirman Pekanbaru City, Riau Province. The number of samples that will be the object of this study amounted to…
This study aims to determine the effect of supervision, occupational safety & health, and compensation to employees job satisfaction at PT. Surya Intisari Raya II Sungai Mandau in Kabupaten Siak. The populations in this study include of all permanent employees at PT. Surya Intisari Raya II Sungai Mandau, totaling 96 people. Primary data collected by the questionnaires as an instrument to pr…
This study aims to determine the effects of compensation and work motivation to work productivity employees at PT. Ekadura Indonesia Kabupaten Rokan Hulu. The population in this study includes all employees at factory department, totaling 143 people. Primary data was collected by questionnaire as an instrument to prove the result of the research, to test the hypothesis in this study is usi…
This research was conducted at Dalimo Jaya Motor Pekanbaru. The purpose of this study was to determine the effect of Work Experience, Work Environment and Supervision on Employee Job Satisfaction. The study population was all employees who worked at Dalimo Jaya Motor Pekanbaru, totaling 85 people using the interview, observation and question methods. The research variables used are Work Ex…