Hemibagrus nemurus is present in the Kampar Kiri River. A study aims to understand the reproductive biology aspects of this fish has been conducted from July-August 2019. The fish was sampled 4 times, twice/month. Parameters measured were sexual characteristics, sex ratio, gonad maturity level, gonad somatic index (GSI), fecundity and egg diameter. Results shown that there were 24 males and 28 …
Mystus nigriceps commonly inhabit the Tarai River that has been polluted and it may affects the reproductive biology of the fish. A study aims to understand the reproductive biology of M. nigriceps has been conducted. The fish was sampled 5 times, once/two weeks, from April to July 2019. Parameters measured were Sex Ratio, Gonad maturity Level, Gonad Somatic Index (GSI), fecundity and egg diame…
Restaurant liquid waste may pollute aquatic environment as it has high TSS and NH3 content. It should be processed before being flown to environment. This study aims to understand the effectiveness of EM4 addition in reducing TSS and ammonia content in the restaurant liquid waste. This research was carried out in April 2019 at the Naga Sakti street. A Completely Randomized Design (CRD) was appl…
The research of phytoplankton abundance dynamics conducted in June-July 2019 at Lake Tepian Batu. A study aims to know the dynamics of phytoplankton abundance. There were 3 Stations namely stasion 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 2 sampling psoint, in the surface and 2 Secchi depth. Sampling was done 4 tim…
Paweh fish (Osteochilus hasselti C.V) is type of fish commonly inhabit the Bunter lake of Pangkalan Baru Village. However, information on reproductive biology of the fish is rare. To understand the biological aspects of this fish, a study was conducted. The fish was sampled once at two weeks for two months period, from August to October 2019. Parameters measured were sex ratio, gonad maturity l…
Puntius hexazona (Sumatra fish) is a type of freshwater fish that inhabits the streams in the Riau University area and the upstream of the Sibam River. A study aims to understand the reproductive biology of P. hexazona has been conducted from May-August 2019. The fish was sampled 6 times, twice/month. Parameters measured were sexual characteristics, sex ratio, gonad maturity level, gonad somati…
In general, peat water has various acidity level water. To improve the quality of that water, addition of lime and coagulant such as alum and poly aluminium chloride is necessary. A research aims to find out a dose of lime, alum and PAC to improve water quality has been conducted in March-April 2019. Water samples were taken from the Wonosari Village, Bengkalis. There were 9 treatments applied …
The carrying capacity is defined as the ability of aquatic environment to support the life of organisms in that area. A study aimed to assess the aquatic carrying capacity for extensive fishing in the Putus Lake, Pangkalan Baru Village, Kampar District, Riau. The carrying capacity was determined based on primary productivity using chlorophyll-a concentration, which is indicating the existence o…
There were many activites around in kolong of tin post mining in Baran Timur Village Meral District Karimun Regency Kepulauan Riau Province, contributed orgnic and inorganic materials that influenced concentration of nutrient (N and P) in the water. This research aims to know the trophic state in kolong of tin post mining in Baran Timur Village Meral District Karimun Regency Kepulauan Riau Prov…
Channa lucius is a type of freshwater fish that commonly inhabit the Kampar Lama Oxbow Lake. This study aims to understand the reproductive biology of C. lucius. The fish was sampled 4 times, twice/month, from June-July 2019. Parameters measured were sexsual characteristics, sex ratio, gonad maturity level, gonad somatic indeks (GSI), fecundity and egg diameter. Results shown that there were 36…
Carrying capacity is defined as the ability of aquatic environment to support the life of organism in that area. A study aimed to assess the aquatic carrying capacity for extensive fishing in the Betung lake, Betung Village, Pangkalan Kuras Sub-district Pelalawan District, Riau Province. The carrying capacity was determined based on primary productivity using chlorophyll-a concentration. This r…
Channa lucius or snakehead fish inhabit the Kampar Lama Oxbow Lake. This research aims to understand the pattern of otolith growth rings of that fish and it was conducted in July to August 2019. The fish were caught using fish trap, once/week. There were 58 fishes (38 male fishes and 20 female fishes). The otolith (sagita) were removed and manually shaved. Growth ring pattern was studied using …
Channa lucius is one of freshwater fishes that inhabit the Kampar Lama Oxbow Lake. This research aims to determine the type of food present in the fish’s stomach. To understand the type of food consumed by C. lucius, a research has been conducted at July to August 2019. There were 107 fishes captured, but only 38 fish have full stomach. The analysis was conducted using a gravimetric method. S…
Betok fish is one type of species that is influenced by the season and lives in the Lubuk Siam Lake. A research aimed to understand the standing Stock of Anabas testudineus in size distribution of fish caught in Lubuk Siam Lake. Fish was sampled in 3 sampling points using nets and traps. The research was conducted in April-May 2019. The Standing Stock was analyzed based on Leslie method. The r…
Many activities in the Tanjung Balam Lake contribute the input of organic and anorganic matter that affects the nutrient concentration and increasing the growth of phytoplankton. A research about Trophic State of Tanjung Balam Lake by phytoplankton in Buluh Cina Village Kampar District Riau Province has been conducted in June-July 2019. The location of the water samples to measure water quality…
Carrying capacity is defined as the ability of aquatic environment to support the life of organism in that area. A study aimed to assess the aquatic carrying capacity based on chlorophyll-a for extensive fishing in the Tuok Tonga Lake, Buluh China Village, Siak Hulu Sub District, Kampar District, Riau Province. The carrying capacity was determined based on primary productivity using chlorophyll…
Tanjung Balam Lake receive organic and anorganic matter from palm plantation and the water from the Kampar River. To understand the relationship between water quality and the phytoplankton abundance of the Tanjung Balam Lake, a research has been conducted in June – July 2019. There were three sampling points, namely in the inlet, in the middle of the lake and in the end of lake. In each sampl…
Many activities in the inundation of PLTA Koto Panjang Recervoir Batu Bersurat Village contributed organic matter that affect nitrate and phosphate concentration in waters and increasing the abundance of phytoplankton. A research aim to know the relationship between nitrate and phosphate with phytoplankton abundance in the inundation of PLTA Koto Panjang and it was conducted in June-July 2019…
The Sei Paku Reservoir is inhabited by many fish species, but they never been studied. A study aims to understand the type of fish present in the reservoir, has been conducted in February to April 2019. Fish sampling were conducted six times once/two weeks. The fishes were captured using lures, gill nets and bamboo traps. Fish samples were then identified. Results shown that there were 21 fish…
Microplastic is plastic pieces sized ≤ 5 mm. The presence of microplastic in sediment negatively affects the environment as well as the benthic organism. As the costal area of the Naras Hilir Village facing the Indian Ocean, the microplastics carried by the water may be stranded in the beach. A research aims to understand the type and density of microplastic present in the coastal area of the…