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…
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…