Seagrass is present in the Genting Beach. During the low tide, however, propeler of fishermen ship damage the seagrass habitat in general. To understand the types and density of seagrass in Genting Beach, a study has been conducted in April – June 2018. There were 3 sampling points, in the river mouth of the Genting River (SP I), in the shipping line (SP II), and in the mangrove area (SP III)…
Batang Arau River received organic matter from domestic activities conducted around the river. As the load capacity of a river is limited, any load addition may damage the ecosystem in the river. The aims of this study is to determine the capacity of the organic pollution load of the Batang Arau River based on the BOD5 and COD content. This research was conducted in January 2018. There were 5 s…
Clarias batrachus is a freshwater fish that inhabit the Tapung Kiri and Sail Rivers. The water quality in the Tapung Kiri River is relatively good, while that of the Sail River is polluted. As the water quality in general affects the blood condition of the fish, it is predicted that blood condition of C. batrachus from the Tapung Kiri and Sail Rivers are different. A research aims to unde…
Pangasius hypophthalmus is a type of freshwater fish that inhabit the Sail River that is polluted and the Tapung Kiri River that has relatively good water quality. As the water quality in general affects the blood condition of the fish, it is predicted that blood condition of P. hypophthalmus from the Tapung Kiri River and the Sail River different. A research aims to understand blood condition …
There are several human activities such as fishing and palm plantation around the Pekak Lake and thus the pollutant originated from those activities may enter the water and affects the trophic state of the lake. The Trophic Index (TRIX) can be used to determine the trophic status of the water based on chemical and biological parameters. A research aims to understand the trophic status of the Pe…
Puntioplites bulu is a type of freshwater fish that commonly inhabit the Batang Mahat River, Riau. A study aims to understand the reproductive biology of P. bulu has been conducted. The fish was sampled 6 times, second/month, from January to March 2019. Parameters measured were sex ratio, gonad maturity level, gonad somatic index (GSI), fecundity and egg diameter. Results shown that there were…
Zoobenthos can be used as bioindicator of water quality. A study aims to understand the structure of zoobenthos community in mangrove area of the Mengkapan village has been conducted in November - Desember 2018. Zoobenthos were collected manually, namely S1 (around the oil pipe), S2 (residential area) and S3 (natural area). Water quality parameters measured measured were temperature, pH, sal…
The research was conducted on November 2018 untill February 2019 in UD Dika Putra tofu industry. The research aimed to analyze the condition of tofu industry waste water, the efffectivenes of stabilization ponds in improving the waste water quality and the effects of discharged waste waste in tarai river. The method used in this research was survey method. Parameter measured were temperature, p…
Phytoplankton was sensitive to the environmental changes, and therefore it might be used as bioindicator. A research aims to understand the diversity of phytoplankton in the swamp area of the Sawah Village was conducted on July to August 2018. There were 3 stations with 3 sampling points in each station. Samples were taken 3 times, once/week, in 3 different stations, namely S1 (natural area),…
Marine debris is a type of pollutant that commonly found in the mangrove ecosystems. A research aims to determine the composition and density of marine debris in the mangrove ecosystem of the Sungai Rawa Village was conducted in June - July 2018. A survey method was used in this study. Samplings were done three times (once / 2 weeks) at 3 stations namely S1 (ecotourism area), S2 (natural mangro…
Indragiri River has high fishery potential. Fishing activities conducted however, affect fish population in general. A research aims to determine the community structure of fish in that waters was conducted in 16-21 August 2018. Fish was sampled every day for 15 days. The fish was captured using gill net, nets and fishing rods. Data analyzed were diversity index (H'), uniformity index (E) and …
Osteochillus hasselti was commonly inhabit the Lubuk Siam Lake. A research aims to understand the standing stock of O. hasselti in that lake was conducted in July to August 2018. The fish was sampled everyday for 10 days in July and 10 days in August, in 3 sampling points (in the inlet area, in the middle of the lake, and the outlet) using gill nets. The standing stock was analyzed using Lesli…
Sail River is one of the Siak watersheds that have been polluted due to high levels of TSS, TDS, and turbidity. This study aims to determine the level of reduction in TSS, TDS and turbidity levels by using different bioijuk densities. This research was conducted in March-April 2019. The method used was a completely randomized design (CRD), which was used as treatment, was bioijuk density. P…
The Sail River is one of the Siak watersheds contaminated with heavy metals Pb and Cd. This study aims to determine the decrease in heavy metals Pb and Cd in water due to the use of different bioijuk densities. The study was conducted in March-April 2019. This study used a completely randomized design (CRD), with 3 different bioijuk density treatments, namely P1 (rare density), P2 (medium densi…
Puntioplites bulu is a freshwater fish that inhabit the Koto Panjang Reservoir. A study aims to understand the stomach content of P. bulu has been conducted from January to March 2019. The fish was sampled 6 times, once/ 2 weeks. There were 65 fishes captured, but 3 fishes were discharged as they had empty stomach. Stomach content was analyzed using a volumetric method and then the Preponderan…
Comparative study of reproductive biology Ompok hypopthalmus from the Kampar Kiri and Kampar Kanan Rivers has been conducted on April-May 2018. As there are differences on water condition and water quality in the Kampar Kiri and Kampar Kanan Rivers, the biological aspects of the reproductive of O. hypopthalmus living in those areas might be different. Sixty one fishes (28 males and 33 females) …
Strombus turturella is a type of gastropods that live in the shallow coastal area of the Dompak Island. A research aims to understand the morphometrical, meristical characteristics and growth patterns of S. turturella from the Dompak Island was conducted in June-July 2018. The number of snail sampled was 400, with 46.98-83.07 TL mm and 13-46 grams BW. There were six morphological characteristic…
Blood clam (Anadara granosa) is bivalve that settle in the bottom of the sea. A research aims to understand the morphometrical characteristics and growth patterns of A. granosa was conducted in May-June 2018. One hundred clams were analyzed (23.89-50.52 mm shell length and 3.85-18.16 grams total weight). There were five morphological characteristics measured such as shell length, shell heig…
Trophic State Index (TSI) is a method used to determine the trophical state of waters. The TSI was calculated based on physical, chemical and biological parameters and it is more representative for analysing the trophical state of waters. This research was conducted in March to April 2018 and it aims to understand the trophic state of the Akap Resevoir. There were three sampling stations namel…
There were many types of macrophyta present in the swamp area of the Sawah Village, but there was no information about the types of macrophyta in that area. To understand the type of macrophyta presence in that area, a research has been carried out in February 2019. The method usedz is a the survey method, where the swanp area of the Sawah Village used as the location of the research and macrop…