Tapung River swamp and in the Sail River. The water quality in the Tapung River swamp is relatively good condition, while the water quality in the Sail River is bad it is polluted. As the water quality in general affects the blood condition of the fish, it is predicted that blood condition of H. temmincki from the Tapung River swamp and the Sail River different. To understand blood condition of…
feces will increase the Dissolved Oxygen content in the surrounding area. A research aims to understand the Dissolved Oxygen concentration in the water from the cage area and from the area that has no cage has been done from July - November 2014. In the Koto Panjang Dam, the floating cage fish culture is in the DAM site. Samplings were conducted 4 times, once/ 2 weeks. There were 3 stations, n…
Pterigoplihchtys pardalis is originated from South America, but it has been distributed evenly in many rivers in Indonesia. Information on length-length relationship is important for conducting research related to biological aspects and conservation of this fish. However, this information is rare. To get information on length-length relationship, a study has been conducted from February to May …
Aquaculture waste rich in organic materials and it is potencial as basic materials for liquid fertilizer. To increase the N, P and K content, addition of EM4 and acetic acid activators are needed. To understand the effectiveness of the activators in increasing the N, P and K content, a study has been conducted from March to April 2015. There were 5 treatments applied, there was 10 L of pure was…
will increase the Phosphate content in the surrounding area. A research aims to understand the Phosphate concentration in the water from the cage area and from the area that has no cage has been done from July - November 2014. There were 3 stations, namely 200 m upstream nof the cage area (S1), in the cage area (S2) and 200 m downstream of the cage area (S3). Samplings were conducted in the DAM…
In floating cage fish culture activities, degradation of feed remain and fish feces will increase the nitrate content in the surrounding area. A research aims to understand the Nitrate concentration in the water from the cage area and from the area that has no cage has been done from July–November 2014. There were 3 stations, in the 200 m upstream of the cage area (S1), in the cage area (S2) …
Macrozoobenthos that live in the base of a river is commonly used as bioindicator, as its presence is depended on the water quality of the river in general. To understand the community structure of the macrozoobenthos in the Melibur River, a study has been conducted on 7 - 22 December 2014. Samples were taken from 3 stations, around the sago industry outlet (S1), around the river mouth (S2) and…
well developed in that river. To understand the stomach content of that fish and its relationship with size, sex and level of maturity, a study has been conducted from February to May 2015. There were 169 fishes captured, however only 91 fishes were used for stomach content study as the other had empty stomach. The stomach content was analyzed and was used as a basis to calculate the Prepondera…
Periphyton is a group of aquatic microorganism that grew in the surface of natural substrates such as rock, wood, plants and aquatic animals. A research aims to understand the periphyton composition in the Salo River was conducted in April to May 2015. Sampling were conducted in 3 stations, they were in the upstream (St1), midstream (St 2), downstream (St 3), 4 times, once/ week. Results shown …
Periphyton is a group of microorganism that grow in some natural substrates such as rock, wood, plants and aquatic animals. A research aims to understand the type and abundance of periphyton in the Sago River has been carried out in April - May 2015. Samples were taken from three station, once/ week for a 4 weeks period. Type of periphyton was identified based on Prescot (1974), and Yunfang (19…
Pangasius polyuranodon is one of freshwater fishes that inhabit the Siak River in Riau. This fish has a high economical value and it is a main ingredient for many Riau’s traditional food. However, information on biological aspects of this fish is limited. To understand the stomach content analysis of this fish, a study has been conducted from January – April 2015. The fish was sampled in th…
Periphyton is a type of algae that commonly inhabit the surface of immersed objects. A research aims to understand the periphyton community (types and abundance) in the floating-net cage in the Koto Panjang Dam has been conducted from May to June 2015. Samplings were conducted 3 times in 3 stations, namely St. I (Tanjung Alai, 200 cages), St. II (Pulau Gadang, 500 cages) and St. III (Dam Site, …
Helostoma temmincki is a type of fish that inhabit swamp area in Riau. A study aims to understand the stomach content and its relation with size, sex and level of maturity of that fish has been conducted on February to May 2015. Fish samples were captured using gill nets and fish trap. Stomach content of the fish was analyzed and it was used as a basis to calculate the Preponderance Index (PI).…
Liquid wastes originated from fish market and tofu industries are rich in organic materials and it is potencial as basic materials for liquid fertilizer. To understand the N, P and K content in the liquid fertilizer made from fish market and tofu industries liquid waste, a study has been conducted from February to April 2015. The fertilizer was made by fermented the waste with EM4 for 30 days. …
however is almost none. To understand the diversity of fish in that river, a study has been conducted from Mey to July 2015. There were 5 sampling area, upstream (ST I and II), middle (ST III and IV) and downstream (ST V) of the river. The fish was sampled using net (mesh size 0,5 inch), dike (mesh size 0,1 inch) and electrofishing. Data were then analyzed to find out the diversity (H’), even…
Sea grass community is one of the most productive ecosystem in marine environment. Seagrass is a flowering plant (angiosperm) that is very important in ecological aspects. The purpose of this study was to determine the community structure of seagrass found in the waters of the Trikora Beach, Malang Rapat Village, Bintan Regency. The study was conducted in May 2015 in the waters of the Trikora B…
Lubuk Siam Lake is one of the oxbow lakes in the Lubuk Siam Village, Siak Hulu Sub-regency, Kampar Regency, Riau Province. This lake is overgrown by various types of aquatic plants and almost cover the surface of the lake. This condition hampers the fishing activities in the lake. This research aims to discover the types and density of the aquatic plant in Lubuk Siam Lake and it was conducted o…
Watas Hutan Lake is one of the oxbow lakes in the Kampar Regency. This lake is overgrown by various types of water plants that almost cover the surface of the lake. This condition hamper the fishing activities in the lake. This research aims to discover the types and density of the aquatic plant in the lake and it was conducted from February to March 2015. Field sampling was done 2 times, a mon…
The liquid waste from the palm oil company is rich in phosphate and oil remains. To reduce the phosphate and oil content, a treatment such as filtering should be applied. A study aims to understand the effectiveness of the use of bio-sand filter and mangrove charcoal to reduce oil and phosphate content in the liquid waste originated from the palm oil company PT.PN V Sei Galuh, has been conducte…
Air Hitam River is one of the most polluted river in Pekanbaru, as there is a tofu industry and households that discharge the waste to the river. To understand the pollution level of the river, a study has been conducted from March to April 2015. The pollution level was identified based on water quality and macrozoobenthos community structure in the river. There were 3 stations and 3 sampling p…