Sail river has been polluted by heavy metals and those affects the organs of muscles and gonad of the fish, a study has been conducted on December 2017 to January 2018. Samplings were conducted two times, once/month, in the downstream of the river. Heavy metals content were analysed using AAS. Results shown that the average concentration of Fe in the gills, muscles and gonad were 2.123, 1.970 a…
Hampala macrolepidota commonly inhabit the Lubuk Siam Lake. A research aims to understand the standing stock, relative growth rate and recruitment pattern of H. macrolepidota in that lake was conducted in March 2018. Fish was sampled everyday for a week period, in 3 sampling points (in the inlet area, in the middle of the lake and at the end of the lake), using gill nets. The standing stock was…
Climbing perch (Anabas testudineus) is one of freshwater fish living in the swamp area in the Sawah Village. Information on the biological aspect of this fish, however, is limited. A study aims to understand the reproductive biological aspect of this fish has been conducted from March - April 2018. The fish was sampled once/week for a month period. They were 100 fishes, 36 males and 64 females.…
The existence of human activities around the Pekak Lake producing organic and anorganic materials that enter the water and affects the type and density of zooplankton in general. To understand the types and density of zooplankton in the Pekak Lake, a research has been carried out in March-April 2018. There were three sampling points, namely in the inlet, in the middle of the lake, and in the en…
There are many types of makrophyta and fish present in the swamp area in the Sawah Village, but there is no information on the association of fish and makrophyta in the swamp. To understand that association, a research has been conducted in August – September 2018. Sampling were conducted once /week for a month period. Puntius johorensis, Rasbora einthoveniiand Puntius lineatus were found aro…
Periphyton is one of microorganisms that serve as primary producer in the aquatic environment. Research aims to determine the chlorophyll-ɑ concentration of periphyton attached in plastic substrate has been carried out in April-May 2018 in the Sail River. There were three sampling stations, namely S1 (in the upstream), S2 (in the middle) and S3 (in the downstream). Samplings were conducted onc…
Macrobrachium mammilodactylus was a type of freshwater shrimp that inhabit swamp area around the Riau Main Stadium. The population of shrimp in the swamp was relatively high and it indicates that the reproduction of the shrimp was succeed. This research aims to understand the reproductive biological aspects of the shrimp and it was conducted in March-April 2018. Sampling were conducted 4 times,…
Lubuk Siam lake is an oxbow lake that has high fishery potential. The presence of the fish, however, is affected by seasons. The fish enter the lake during the wet season as the water from the Kampar River flow to the lake. This research aims to determine the structure of fish community in the lake during the dry season, March to April 2018. Fish sampling was carried out four times, once/week. …
Barbodes schawanefeldii was commonly inhabit the Indragiri River. A research aims to understand the population of B. schawanefeldii in that river was conducted in July 2018. Fish was sampled everyday for 10 days, using gill nets and cast net. The population estimation was analyzed using a Leslie Method. Results shown that the initial population (No) of the fish was 446 kg and the final populati…
Koto Panjang reservoir has the main function as a hydroelectric power plant, besides it is used as a place to catch fish and cultivate fish in floating cages, as well as being a tourist area. The study aims to understand the concentration of organic matter in the dam site Koto Panjang reservoir. This study was conducted May-June 2018.Samplings were conducted 3 times, once/week. There were 3 sta…
In the swamp area of the Sawah Village, the water quality is affected by pollutant originated from activities conducted around and in the swamp area. The low quality water may negatively affects the growth of Monopterus albus and it is reflected in the growth pattern in the otolith of fish living in that swamp. A research aims to understand the pattern of otolith growth rings of the Monopterus …
Ecologically, periphyton community structure can be used to identify water quality of a river. To understand the condition of water quality of the Kampar River based on periphyton community, a research was conducted from May to June 2017.Water sampling is done at 5 point sampling once a week with 3 repetitions. Water quality parameters measured are temperature, brightness, turbidity, current ve…
Sepinang Lake is one of oxbow lakes located in the Pangkalan Serik Village. A research aims to understand the limnological condition of the Sepinang Lake based on physical–chemical parameters has been conducted in March-April 2018. There were three sampling points, namely in the inlet, in the middle of the lake and in the end of the lake. In each sampling point, water was sampled from the sur…
The activities of petroleum drilling, ferry ports and leakages of underwater pipeline caused oil pollution in the coastal area of the Mengkapan Village.The oil pollutant will be carried by the waves and settles to the sediment and it may causing genetic changing in the microorganisms present in the sediment. The presence of oil pollution may trigger gene mutation in specific bacteria and it may…
Indragiri River is inhabited by many typs of gastropod. A research aims to understand the community structure of the gastropod in that river has been conducted in June-July 2018. There were 3 stations, the river bank far away from inhabitants settlement (Station 1), at the small island in the river center (Station 2), the river bank near from inhabitants activity (Station 3) and in each station…
Pekak Lake is one of oxbow lakes located in the Buluh Nipis Village. A research aims to understand the limnological condition of the Pekak Lake based on physical – chemical parameters has been conducted in March-April 2018. There were three sampling stations namely Station 1 (inlet), Station 2 (in the middle of the lake), and Station 3 (outlet). In each station there were two sampling points,…
EM4 fermented restaurant liquid waste is rich in organic materials and can be used as nutrient source for growing Chlorella sp. A study aims to understand the best concentration of the waste has been conducted in July – August 2018. The waste was added to aquades and there were 4 treatments applied, P0 (0%), P1 (25%), P2 (40%), P3 (55%). Then 100 ml of Chlorella sp. cultured was mixed with 5 …
Nygard Index can be used to determine the trophic state of waters. Calculation of this index is based on the number of phytoplankton species that are belonged to these following groups, namely Chlorococcales, Euglenophyceae, Centric diatom, Myxophyceae and Desmidiaceae. To understand the trophic state of the Sepinang Lake, a research has been conducted on March – April 2018. There were 3 samp…
Hampala macrolepidota fish is a freshwater fish that inhabit the Kampar Kiri River. To understand the morphometrical, meristical characteristics and growth pattern of this fish, a research had been conducted from February-April 2018. There were 52 fishes (102-330 mm SL and 30.92-990 g BW) were captured from the river. There were 26 morphological characteristics measured and 11 meristical charac…
Kampar Kiri River is one of the rivers that are polluted due to human activities along the river. Decrement of water quality may affect the growth of fish and it is reflected on the pattern of otolith growth rings. A research aims to understand the pattern of otolith growth rings in the H. macrolepidota was conducted in January to March 2018. Sampling was done four times for two months. The fis…