Abstract Plastic waste can be found everywhere, including in the Koto Panjang Dam. As the plastic waste degraded, the microplastic materials may be distributed in the water and it may be accidentally swallowed by omnivorous fishes such as Puntius schwanafeldii and Puntioplites bulu. To understand the presence of the microplastic materials in the fish stomach, a research has been conducted …
Abstract The types and abundance of macrozoobenthos is related to the water quality of the surrounding area. To understand the water quality of the Lubuk Siam Lake, an oxbow lake of the Kampar River based on types and abundance of macrozoobenthos present in that area, a study has been conducted on October to December 2020. Samplings were conducted three times, once/two weeks. The macrozoo…
ABSTRACT This research conducted in December 2020 in Koto Panjang Hydroelectric Reservoir, Kampar Regency, Riau Province. Sampling was conducted in 2 stations, namely in full KJA area and less KJA area, each station consists of 3 sampling points. Sampling was done every 4 hours during 3 days. Sampling was conducted in 6 depths based on tranparency, namely surface, 2 Secchi depth , 4 Secch…
ABSTRACT The Nygard index can be used to determine the trophic state of waters. Nygaard Index calculation is based on the number of phytoplankton species include in the following groups, that is Chlorococcales, Euglenophyceae, Centric Diatoms, Myxophyceae and Desmidiaceae. This study aims to determine the trophic state of Parit Lake based on the Nygaard Index. This research was conducted i…
Abstract Putus lake is an oxbow lake that receive water from the Kampar River during the rainy season. This lake is inhabited by many fish species, however, the information on the type of fish in that area is limited. A study aims to understand the identification of freshwater fish in the Putus Oxbow Lake has been done from January to February 2020. Fish sampling were conducted every day …
Abstract Osteochilus melanopleurus can be found in the Siak and Kampar Rivers. The Kampar Rivers waters are better than that of the Siak River and it affects the the growth of the fish. The growth pattern is reflected on the pattern of otolith growth rings. A research aims to understand the pattern of otolith growth rings of the O. melanopleurus from both rivers has been conducted from Jan…
Abstract Snakehead fish (Channa striata) and barau fish (Hampala macrolepidota) are commonly found in the Koto Panjang Dam. As heavy metal containing pollutans such as domestic and plantation wastes enter the water, the remains of the heavy metals may be accumulate in tissue of fish living in that area. A study aimed to determine the content of Pb in the gills, kidneys, and muscle of those fish…
ABSTRACT Microalgae have the potential as raw material for biofuels, such as biodiesel and bioethanol. This is to determine the availability of raw materials found in nature, which can be seen from the oil or lipid content. The purpose of this study was to determine the types, abundance, biomass, and lipid content of the 3 microalga species that were the largest. This research was conducted in…
Abstract Anabas testudineus is one of the freshwater fishes that can be found in the Teluk Petai Lake. The research aimed to find out the type of food consumed by that fish has been conducted from October to November 2020. Sampling is done 4 times at intervals of time once a week. The number of fish caught during the study was 95, but 17 of them had empty stomachs and they cannot be analyzed. …
Abstract Goldfish can be found in the Koto Panjang Reservoir. In the vicinity of the reservoir waters, many anthropogenic activities result in heavy metals entering the water and thus accumulating in organisms living in the reservoir waters. The purpose of this study was to determine the levels of Pb in water and fish organs (gills, kidneys, and meat), as well as to determine the condition of t…
Abstract A study aimed to assess the aquatic carrying capacity in the Bandar Kayangan Lembah Sari Reservoir, Rumbai Pesisir District, Pekanbaru City, Riau Province. The carrying capacity was determined based on primary productivity using chlorophyll-a concentration, which is indicating the existence of phytoplankton in waters. This research was conducted April-May 2018. Samples were taken at 4…
Abstract Microplastics originated from degraded plastic materials may be flown to water body and accidentally swallowed by aquatic organisms. A research aims to understand the microplastics in the water body and in the stomach of fish living in the Lubuk Siam lake was conducted from September to November 2020. Samplings were conducted 3 times, once/ month, in 3 sampling points. In each samplin…
Abstract In the Koto Panjang Reservoir the microplastic may originated from the degraded plastic waste as well as degraded plastic net from the fish culture cages. The microplastic may be accidentally engulfed as fish swallowing their food. To understand the microplastic present in the stomach of wild common carps living around the fish net cages, a study was conducted in December 2020- Februa…
Abstract Helostoma temminckii is a type of fish that lives in the Lubuk Siam oxbow lake and has high economic value. The fish capture activities, however, are conducted throughout the year and it may lead to reducing the fish population. A study aims to determine the standing stock, growth rate, mortality, and exploitation rate of H. temminckii in that lake was conducted in January to February…
Abstract Helostoma temminckii is a type of fish that lives in the Lubuk Siam oxbow lake and has high economic value. The fish capture activities, however, are conducted throughout the year and it may lead to reducing the fish population. A study aims to determine the standing stock, growth rate, mortality, and exploitation rate of H. temminckii in that lake was conducted in January to February…
ABSTRACT Fish cultivation activities in floating net cages (KJA) produce residual feed and residual metabolism. This study aims to look at the fertility status and influence of floating net cages (KJA) on the fertility rate of the waters around the Dam Site of PLTA Koto Panjang Reservoir. Sampling was conducted at three stations, namely station 1 (slightly KJA), station 2 (medium KJA), and sta…
Abstract The quality of peat water in general is relatively low and it is needed to be treated by using a coagulation system. Mixture of lime, alum and bentonite might be used as coagulant agents. This study aims to determine the effectiveness of different dosages of lime, alum and bentonite in improving the quality of peat water. Peat water samples were obtained from the Kualu Nenas Village, …
Abstract Tanjung Kudu lake is an oxbow lake that receive water from the Kampar River during the rainy season. This lake is inhabited by many fish species. However, the information about the type of fish in that area is limited. To understand the types of fish present in the Tanjung Kudu lake, a study has been conducted in August to December 2020. Fish sampling were conducted every day for two …
ABSTRACT Research on the relationship between phytoplankton abundance and chlorophyll-a concentration was conducted in December 2020 in Tanjung Kudu Lake and Parit Lake, Tambang District. The aims of this study was to determine the relationship between phytoplankton abundance and chlorophyll-a concentration. There were 3 Station, namely Station 1 (inlet), Station 2 (middle of the lake), and St…
Abstract Phytoplankton is primary producer of natural feed and has an important role in the water. This research was conducted in December 2020 in Tanjung Kudu Lake and Parit Lake. A sampling at three stations, namely Station 1 (inlet), Station 2 (in the middle of the lake), and Station 3 (end of the lake). Sampling was done 3 times one/week. Water quality parameters measure were temperature, …