Abstract Macrozoobenthos can be used as a bio indicator of water quality, because the organism is settled and it is sensitive to changes of the water quality. This research aims to determine the types of macrozoobenthos and water quality of the Danau Lau Kawar. This research was conducted on August to September 2020. Samplings were conducted four times, once a weeks. The macrozoobenthos an…
Abstract Carrying capacity is defined as the ability of aquatic environment in supporting the life organism in that area. A research aims to determine the carrying capacity and the number of floating net cages that can be operated in the Pangean Reservoir based on total phosphorus concentrations was conducted in July- August 2019. Water samples were taken at four stations, namely Station 1…
Abstract Heavy metals are chemicals that can pollute waters and are toxic to microalgae, such as copper (Cu) and chromium (Cr). Heavy metal Cu is an essential heavy metal, but it is toxic if the metal concentration is high in water. The study aimed to find out the toxicity of Cu and Cr as well as compare the toxicity of Cu and Cr against the abundance of Bacillaria sp. in 3 parameters nam…
ABSTRACT Longitudinal Gradient of nitrate (NO 3 - ) and phosphate (PO 4 3- ) in Air Hitam River was carried out in September 2021. This study aims to determine the Longitudinal Gradient of nitrate and phosphate in the Air Hitam River Pekanbaru City. There were 5 stations, namely Station 1 (upstream), Station 2, 3, 4 (in the middle of river), Station 5 (down stream). Sampling was done 3 …
ABSTRACT This research about comparative study of DO, CO2, pH in Tanjung Kudu Lake Kualu Village, Kampar Regency and PLTA Koto Panjang Hydroelectric Reservoir Riau Province was conducted on January 2021. There were 3 station in Tanjung Kudu Lake as well as Koto Panjang Hydroelectric Reservoir. Sampling was done every 4 hours during 3 days. Sampling in Tanjung Kudu Lake based on Secchi dep…
Abstract Barbodes schwanefeldii or kapiek fish is a type of freshwater fish that lives around the floating net cage area and in the area with no floating net cage in the Koto Panjang Dam. This study aims to determine the meristical characteristics of B. schwanefeldii living in that dam, especially around the floating net cage area and in the area with no floating net cage. This study was c…
ABSTRACT Fish farming activities in floating net cages (KJA) produce residual feed and metabolism which will increase organic matter in the waters. Efforts to control the reduction of KJA cultivation are the application of the IMTA (Integrated Multi Trophic Aquaculture) cultivation system. This study aims to determine the content of organic matter in the Koto Panjang PLTA Reservoir, especi…
ABSTRACT This study aims to determine the content of microplastics in Tilapia (Oreochromis niloticus) and Barau Fish (Hampala macrolepidota) in Koto Panjang Reservoir, Kampar Regency, Riau. The method used in this research is a survey method. Data collection consists of primary data and secondary data where primary data is in the form of data obtained from observations of samples that hav…
Abstract Freshwater crab is widely distributed in river, lake, swamp, canal, and pond. Riau Province has many freshwater crabs, however habitat characteristics information of these organisms are poorly known. This study in Sawah village from the Kampar Utara District, Province of Riau aimed to understand the habitat caracteristics of freshwater crab types in had been collected on june 2021…
Abstract Raja Lake in Rengat City has various social, economic and ecological functions such as tourism and fishing. These various activities produce pollutants that will affect water quality. This study aims to determine the status of water quality in Raja Lake. The study was conducted in August 2021. Water samples were taken at 3 Stations with 3 replications. The water quality parameters…
ABSTRCT This research was carried out from July to September 2021 at Muara Angke Teluk Jakarta, North Jakarta City. The method used in this research is a survey method. The purpose of this study was to determine the structure of the macrozoobenthos community which includes species, diversity, and dominance of macrozoobenthos found in the waters of Muara Angke, Jakarta Bay. Muara Angke Bay…
ABSTRACT This research was conducted in October 2021. The research location is located in the Koto Panjang Reservoir area. This study aims to determine the content of microplastics in 5 types of fish in the Koto Panjang Reservoir, Kampar Regency, Riau. The method used in this research is a survey method. The object of the research was samples of the stomach and intestines of 5 types of fis…
ABSTRACT Research on the relationship between chlorophyll-a concentration and total phosphorus was conducted in Januari-Februari 2021 in Tanjung Kudu Lake and Parit Lake, Tambang District. The aims of this study was to determine the relationship between chlorophyll-a and total phosphorus concentration. There were 3 Station, namely Station 1 (inlet), Station 2 (in the middle of lake), and …
Abstract Rasbora caudimaculata is a type of freshwater fish that inhabits the Tanjung Kudu and the Teluk Petai Lakes, Kampar Regency. A study aims to understand the type of food in the stomach of the fish was conducted in October – January 2021. Samplings were carried out 4 times, once/2 weeks. The fish was caught using nets with mesh size 0.5 inch and 1 inch. There were 321 fishes (169 …
Abstract Tofu liquid waste contains a lot of organic matter that can be used as good nutrients for the growth of Spirulina sp. The purpose of this study was to determine the benefits of tofu liquid waste for the growth process of Spirulina sp. optimally. In addition, this study was also conducted to find the best concentration of tofu liquid waste for the growth of Spirulina sp. carried ou…
Abstract Pangasius polyuranodon is commonly found in the Pinang Luar Oxbow Lake, the growth pattern of that fish, however, is never been studied. To understand the growth pattern in the otolith of that fish, a study was conducted in February to March 2021. There were 50 fishes (41 male fishes and 9 female fishes) captured. The otolith (sagita) was removed using tweezers and shaved using a …
Abstract Thynnichthys thynnoides is one of fish species found in the Tanjung Kudu Lake, an oxbow lake of the Kampar River. A study aims to determine the type of food consumed by T. thynnoides was conducted from March-April 2021. Samplings were carried out 4 times, once/two weeks. The number of fish caught was 205, but only 131 fishes could be used as samples for stomach contents analysis,…
Abstract Decreased water quality greatly affects the life of various aquatic organisms, one of which is fish. Various community activities around the watershed can produce a variety of contaminants, both organic and inorganic. These pollutants can contaminate the river either directly or indirectly. The polluted aquatic environment will affect the diversity of fish. The purpose of this stu…
Abstrak Microplastics in the Koto Panjang Dam may orginated from the degraded plastic waste and maybe accidentally engulfed as fish swallowing their food. A research aims to determine microplastics in Pristolepis grooti in the Koto Panjang Dam in December 2020 - February 2021. The method used in this study is the survey method, in the Koto Panjang Dam are used as research sites. purchased…
Abstract In PLTA Koto Panjang Dam, plastic waste comes from various community activities and fishery activities. The waste is destroyed into small particles (0.3-5mm) called microplastics. To determine the presence of microplastics in the water column, a study was conducted in December 2020 - February 2021. Water samples were taken from 3 stations with 3 sampling points at 3 different dept…