Carrying capacity is defined as the ability of aquatic environment to support the life of organism in that area. A study aimed to assess the aquatic carrying capacity for extensive fishing in the Betung lake, Betung Village, Pangkalan Kuras Sub-district Pelalawan District, Riau Province. The carrying capacity was determined based on primary productivity using chlorophyll-a concentration. This r…
Channa lucius or snakehead fish inhabit the Kampar Lama Oxbow Lake. This research aims to understand the pattern of otolith growth rings of that fish and it was conducted in July to August 2019. The fish were caught using fish trap, once/week. There were 58 fishes (38 male fishes and 20 female fishes). The otolith (sagita) were removed and manually shaved. Growth ring pattern was studied using …
Channa lucius is one of freshwater fishes that inhabit the Kampar Lama Oxbow Lake. This research aims to determine the type of food present in the fish’s stomach. To understand the type of food consumed by C. lucius, a research has been conducted at July to August 2019. There were 107 fishes captured, but only 38 fish have full stomach. The analysis was conducted using a gravimetric method. S…
Betok fish is one type of species that is influenced by the season and lives in the Lubuk Siam Lake. A research aimed to understand the standing Stock of Anabas testudineus in size distribution of fish caught in Lubuk Siam Lake. Fish was sampled in 3 sampling points using nets and traps. The research was conducted in April-May 2019. The Standing Stock was analyzed based on Leslie method. The r…
Many activities in the Tanjung Balam Lake contribute the input of organic and anorganic matter that affects the nutrient concentration and increasing the growth of phytoplankton. A research about Trophic State of Tanjung Balam Lake by phytoplankton in Buluh Cina Village Kampar District Riau Province has been conducted in June-July 2019. The location of the water samples to measure water quality…
Carrying capacity is defined as the ability of aquatic environment to support the life of organism in that area. A study aimed to assess the aquatic carrying capacity based on chlorophyll-a for extensive fishing in the Tuok Tonga Lake, Buluh China Village, Siak Hulu Sub District, Kampar District, Riau Province. The carrying capacity was determined based on primary productivity using chlorophyll…
Tanjung Balam Lake receive organic and anorganic matter from palm plantation and the water from the Kampar River. To understand the relationship between water quality and the phytoplankton abundance of the Tanjung Balam Lake, a research has been conducted in June – July 2019. There were three sampling points, namely in the inlet, in the middle of the lake and in the end of lake. In each sampl…
Many activities in the inundation of PLTA Koto Panjang Recervoir Batu Bersurat Village contributed organic matter that affect nitrate and phosphate concentration in waters and increasing the abundance of phytoplankton. A research aim to know the relationship between nitrate and phosphate with phytoplankton abundance in the inundation of PLTA Koto Panjang and it was conducted in June-July 2019…
The Sei Paku Reservoir is inhabited by many fish species, but they never been studied. A study aims to understand the type of fish present in the reservoir, has been conducted in February to April 2019. Fish sampling were conducted six times once/two weeks. The fishes were captured using lures, gill nets and bamboo traps. Fish samples were then identified. Results shown that there were 21 fish…
Microplastic is plastic pieces sized ≤ 5 mm. The presence of microplastic in sediment negatively affects the environment as well as the benthic organism. As the costal area of the Naras Hilir Village facing the Indian Ocean, the microplastics carried by the water may be stranded in the beach. A research aims to understand the type and density of microplastic present in the coastal area of the…
Carrying capacity is an ability of aquatic environment to support the life of aquatic organisms and itcan be determined based on dissolved oxygen concentration. To understand the dissolved oxygen based carrying capacity in the Sungai Paku reservoir, a research has been conducted in June-July 2019. Water samples were taken in three stations, Station 1 (riverine zone), Station 2 (transition zone)…
Trophic State Index can be used to determine the trophic state of waters. The TSI is using physical, chemical and biological approach to determine the trophic state and the result will be more representative for analyzing the trophic state of waters. A research aims to understand the trophic state of the Sungai Paku Reservoir, has been conducted in May - June 2019. There were three sampling sta…
Carrying capacity is defined as the ability of aquatic environment to support the life organism in that area. This study aimed to assess the aquatic carrying capacity of the Perupuk Lake for extensive fishing. The carrying capacity was determined based on primary productivity using the chlorophyll concentration, which is indicating the existence of phytoplankton in waters. A study was conducted…
Carrying capacity is an ability of aquatic environment to support the life of organism in aquaculture. This research aims to determined carrying capacity based on dissolved oxygen for fish net cage. It was conducted on June-July 2019 in PLTA Koto Panjang Reservoir Batu Bersurat Village. Sampling was determined at 3 locations namely Station 1 (tourism area and arround of this station there were …
The decaying rate is the quantity of organic matter that can be decomposed by bacteria per unit time. To determine the decaying rate or the load of organic matter in the Inundation of PLTA Koto Panjang Reservoir, Batu Bersurat village, research was conducted on June-July 2019. There were three stations namely station 1(tourism area and arround of this station there were palm’s plantation), st…
Mangrove area in the Nagari Gasan Gadang has been damage due to human activities and the damage negatively affects bivalve living in that area. A research aims to understand species and density of bivalve was conducted in July 2019. There were 3 stations with 3 plots/station and 5 sub plots/plot. In each sub plot the bivalve were collected by hand. There were 2 bivalve species present, they we…
In the Nagari Kuranji Hilir river there is a restricted area and it is known as “lubuk larangan”. As it is a habitat for T.tambroides, a rare endemic fish species. A research aims to find out a proper method to manage the Nagari Kuranji Hilir river restricted area in order to safe T.tambroides population was conducted on April to August 2019. A quantitative approach method was applied by ob…
Mangrove ecosistem in Kampung Madong is inhabited by numerous aquatic organism, including fish. This study aims to determine the types of fish caught in the mangrove ecosystem of Kampung Madong. This research was conducted in March-April 2019. The method used in the research was survei method on three sampling area observation with four sampling in a month. The analyzed include morphology, mor…
Batang Mahat River is one of the rivers which empties to PLTA Koto Panjang Dam. Batang Mahat estuary around PLTA Koto Panjang Dam is one of the fishing grounds. This study was aimed to obtain information about the water chemical and physical characteristics and biology (plankton) Batang Mahat around PLTA Koto Panjang Dam. This research was conducted in March-May 2019. The observation stations w…
This study aims to determine the type and abundance of gastropods in the mangrove ecosystem in Madong Village. This research was conducted in July 2019 which is located in Kampung Madong Tanjungpinang Kepulauan Riau. Gastropod sampling using the line transects method. At the research location, there were 3 stations and each station consisted of 3 quadrants measuring 1x1 m. The results of the st…