The mangrove forest in Buruk Bakul Village has experienced damage as a result of community activies such as land clearing, shrimp pond cultivation, consumption fish cultivation and settlements. The damage to the mangrove ecosystem will have a negative impact on aquatic biota, including the gastropods that inhabit the area. To determine the structure of the gastropod community in the mangrove ec…
Liquid smoke is the result of distillation or condensation of direct combustion steam containing lignin, cellulose, hemicellulose and other carbon compounds. Liquid smoke made from coconut shells is usually used to increase the growth of plant cells including microalgae, one of which is Chlorella sp. This research used an experimental method with a Complete Random Design system and was analyzed…
The carrying capacity of waters can be interpreted as the ability of waters to support the life of the biota contained or living in them. Determining the carrying capacity of Daek Lake's natural fisheries is more appropriate using the chlorophyll-a approach, because the carrying capacity of natural fisheries is almost entirely dependent on natural feed (phytoplankton). This research aims to det…
The Diatas Lake is a shallow tectonic lake. In that lake, there were floating net cage aquaculture activities that produce organic pollutant and affect the water quality in general. Changing in water quality will affects the types and abundance of phytoplankton as well as the fertility of the lake. To understand the type, abundance of phytoplankton and the fertility status of the lake, a s…
Abstract Bivalve community structure is closely related to seagrass ecosystem as well as environmental condition. Any changing in environmental condition may affects the bivalve community in general. To understand the community structure of bivalve community in the Teluk Bakau Village, a research was carried out in January-February 2023. Bivalve and seagrass samplings were conducted in 3 s…
Abstract The bay waters serve as a crucial habitat for various marine species, including macrozoobenthos. Macrozoobenthos are aquatic organisms with relatively slow movements, residing on the seabed, and are highly influenced by the substrate and water quality. The objective of this research is to examine the relationship between sediment fractions and organic materials concerning macrozoobent…
Abstract Sea turtles are one of the marine life whose existence is endangered so it requires protection or conservation measures. The purpose of this study is to determine how effective turtle conservation management is carried out at UPTD KPSDKP through survey methods. The research has been carried out in May – June 2023 located in Apar Village, Pariaman City. The results showed that cons…
Abstract The purpose of this study was to determine the type and abudance of microplastics in the water and sediment of the Siak Watershed. this study was conducted from March to May 2023. Sampling was done once a month for three months. There were 4 research stations, namely Air Hitam River, Sago River, Umban Sari River and Pengambang River. Surface water samples were taken as much as 10 lit…
Abstract Microplastics are currently a new source of pollutants and are considered the latest research in fresh waters compared to marine waters which have been studied for a long time. This study aims to determine the type and abundance of microplastics using bongo nets in the waters of the Koto Panjang reservoir. The research was conducted from April to June 2022 using a purposive sampling m…
Abstract Many anthropogenic activities conducted along the river banks of the Siak River produced plastic wastes and those wastes may be degraded into microplastics that are distributed in the river. A study aims to determine the type and abundance of the microplastics in the water column was conducted in Januay-March 2023. There were 3 stations, in the Karya Indah Village (S1, upstream), in …
Abstract Phytoplankton is a microscopic organisms floating in aquatic and act as primary producers in the food chain system. A research aims to determine types and abundance of phytoplankton in the Sungai Mandau Reservoir has been carried out on July - August 2022. Sampling taken at three stations, namely Station 1 (upstream), Station 2 (in the middle of stream) and Station 3 (downstream). Wat…
ABSTRACT Periphyton is sessile microscopic organisms that attach on certain substrates. The aim of the study was to determine the types and abundance of periphyton on ceramic substrates in July-August 2022 on the Mandau River. The research method used is survey method. Sampling was carried out 3 times for 10 days. The substrate used is a ceramic substrate with a size (8x3) cm2. The number of c…
Abstract Watershed activities in the Dumai River and land conversion in the Estuary of the Masjid River will affect the quality of Dumai coastal waters, one of which is an increase in suspended solids. TSS is solids in water, consisting of biotic components such as phytoplankton, zooplankton, bacteria, fungi, or abiotic components such as detritus, sand, silt, clay and inorganic particles with …
ABSTRAK Tor tambroides (Cyprinidae) or gadih fish was an endemic fish that inhabit the upstream of the Kampar Kanan River. To understand the length-weight relationship and growth pattern of the fish, a study was conducted in August 2022 - January 2023. The fish were sampled from the river parts that cross the Bandur Picak, Sibiruang, and Tanjung Villages. The fish were collected from fishermen…
Abstract Panjang lake is an oxbow lake located in Siak Hulu, Kampar Regency, Riau. Panjang Lake is inhabited by several types of consumption fish whose economic value is quite standard, one of which is Thynnichthys thynnoides which is commonly in Panjang Lake. Fisheries activities in Panjang Lake affect the stock of motan fish because of the infrequent flood season and community activities to …
Abstract Microalgae is one type of material that has great potential for human life, because it can grow in a relatively short time and can be developed in a limited area, and several types of microalgae have a high protein content, namely Skeletonema costatum. Skeletonema costatum microalgae is a type of microalgae that has a wide geographical range, both in temperate and tropical waters. O…
Abstract Macrozoobenthos density is strongly related to the mangrove density. To determine the type and density of macrozoobenthos found in the mangrove ecosystem of the Putri Sembilan Village, a study has been conducted in July to September 2022. There was a survey method applied. Samplings were conducted 3 times with interval 5 days. Macrozoobenthos sampling was conducted using by scoop …
Abstract This research was conducted in July to August 2022 in the Mangrove Ecosystem, West Dumai District, Dumai City, Riau Province. The study aims to know the types and abudance of zooplankton. The criteria for determining the observation station were determined by the purposive sampling method, namely by looking at the activities and conditions of the mangroves. There were 3 stations (st…
Abstract Oil palm liquid waste contains N (nitrate) and P (phosphate) which can be utilized for the growth of microalgae. Utilization of palm oil liquid waste using microalgae has been widely carried out. One of the microalgae that has potential as phycoremediation is Chlorella sp. Factors that affect the growth of Chlorella sp. cells, are the intensity of light and nutrients. This study u…