ABSTRACT Primary productivity is the conversion of solar energy and nutrients to living biomass through photosynthesis. A research aimed to understand the comparisons of community activities to primary productivity in Tanjung Kudu Lake and Parit Lake. This research was conducted in December 2020. There were three sampling stations namely inlet area, in the middle of the lake and in the end…
ABSTRACT Periphyton is microorganism that live attached to submerged substrate. In the vicinity of Koto Panjang Dam Site there are fish farming activities in floating net cages, which produce feed residu and metabolic waste. This research aims to determine periphyton community around the Dam Site of the Koto Panjang Reservoir. This research was conducted in December 2020. There were 3 stat…
ABSTRACT The aim of the study was to determine the heavy metal content in the gills, muscles and kidneys of O. niloticus and P. schwanenfeldiiliving in the dam. Sampling of fish was carried out twice with an interval of one month each. The method used in this study is a survey method by observing and taking fish samples at the location of the Out Pond Outlet of the Koto Panjang Reservoir. …
Abstract The tofu industrial waste is rich in organic materials and it may be used as nutrient sources in the Spirulina sp culture. A study aims to understand the effect of EM4 fermented tofu liquid waste addition in the media toward abundance and biomass of Spirulina sp has been conducted in February to March 2019. The fermented waste was made by mixing 35 L of tofu waste and 35 mL of EM4…
Abstract Pangasius polyuranodon is present in the Pinang Luar lake. Residue of palm plantation activities such as fertilizer, pesticide as well as soil particles may enter the water and negatively affect the health of fish in general. A study aims to understand the histological structure of the gill, kidney and liver of the fish has been conducted in December-February 2021. Fish organs wer…
ABSTRACT Ompok hypophthalmus is one of the caught fish commonly found in the Indragiri River, Lubuk Terentang Village. The purpose of this study was to determine the rate of growth and mortality of Ompok hypophthalmus. Fish sampling was carried out for 10 days in February and 10 days in March by using drift nets and nets. Data were analyzed by ELEFAN I method, FiSAT II software (FAO-ICLARM…
ABSTRACT The presence of heavy metals in the water may affects the organs of fish living in thas the metal maight be accumulated in fish tissue. A study aims to determine the content Pb and Cd in the water and in the organs Hemibagrus nemurus and Osteochilus pleurotaenia from the Koto Panjang Dam was conducted at August-December 2020. The water was sampled 2 times, as well as fish samples…
ABSTRACT The diversity of zooplankton is related to water quality and it can be used as a basic information to manage the water quality in certain area. A study aims to understand the diversity of zooplankton in the Fisheries and Marine reservoir was conducted on October-November 2020. The zooplankton sampling were conducted using a plankton net in the afternoon, once/ week for a month per…
ABSTRACT Lubuk Terentang Village is one located near Indragiri River, Riau Province. Indragiri river is a habitat for several types of fish, one of which is the baung fish (Hemibagrus nemurus). The population of baung fish in the river is threatened due to former mining in the upstream area of the Indragiri River. This study was conducted to determine the stock of baung fish population at …
Abstract Thynnichthys thynnoides is one of common capture fish that inhabit the Lubuk Siam Lake. A study aims to assess growth and exploitation rates of that fish was conducted from November 2019 to March 2020. Fish was sampled once in 2 weeks for 3 months at 3 sampling points, using gill nets. Data were analyzed by an ELEFAN I method, FiSAT II ( FAO-ICLARM Fish Stock Assesment Tool) soft…
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…