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…
Macrobrachium oxyphilus is a type of freshwater shrimp that live in the swamp areas of the Sawah Villages. A study aims to determine the types of food contained in the stomach of the shrimp has been conducted in April-May 2018. sampling was done four times, once/week). Totally 118 shrimps (39 males and 79 females) were caught, 23.54 – 62.66 mm TL and 0.22-2.54 gr BW. Stomach content analisys …
Giant clams is one of the protected marine animals in the world. Giant clams belonged to the Bivalva class, a group of soft-bodied animals protected by a pair of cupped shells. A research aims to determine the abundance, density and the distribution pattern of giant clams (Tridacnidae) was conducted in August 2018. A belt transect method was applied. Results shown that there were 2 types of cla…
Marine debris is a type of pollutant that commonly found in the mangrove ecosystem. A study aims to investigate the composition, amount and oceanographic parameters that influence the presence of marine debris in Mengkapan mangrove ecotourism area has been conducted from June to August 2018. A survey method was used in this study. Sampling was done three times (once/ two weeks) in 3 observation…
Fiddler crabs (Uca spp.) is a type of crab that lives in the mangrove ecosystem. The presence of illegal logging and domestic activities affect the mangrove ecosystem as well as related organisms, including fiddler crabs. This research aims to understand the structure of crab community (Uca spp.) in the mangrove ecosystem in the Sungai Rawa, and it was conducted on March-April 2018. The fiddler…
Macrobrachium mammilodactylus is a type of freshwater shrimp that inhabits the Terminal AKAP Lake. To understand the stomach content analysis of the shrimp, a study has been carried out from April to May 2018. Sampling were conducted 4 times, once/week. Totally 112 shrimps captured (22.51-46.58 mm) , but 5 of them had empty stomach and could not be used for stomach content and the number of shr…
Anabas testudineus is a type of freshwater fish that live in the swamp areas in the Palas and the Sawah Villages. A research aims to determine the type of food present in the fish’s stomach was carried out in April to May 2018. The fish were caught using gill net, scoop net and bamboo traps, once/ 2 weeks. The number of fish caught during the study was 105, but 10 fishes had empaty stomach an…
Rasbora cephalotaenia is a type of freshwater fish that inhabit the Kandis River. This fish is potential for decorative fish. Information on biological, including morphometric, meristic and growth patterns, however, is rare. To understand the morphometric and meristic characteristics and also the growth patterns of the fish, a research has been conducted March-May 2018. There were 101 fishes (5…
Rasbora cephalotaenia is found in the Kandis River. A study aims to understand the reproductive biology of R. cephalotaenia has been conducted on March - May 2018. The fish was sampled 4 times , once/ 2 weeks. Parameters measured were sex ratio, gonad maturity level, Gonad Somatic Index (GSI), fecundity and egg diameter. Results shown that there was 75 males and 53 females (sex ratio 2:1). Size…
Indragiri river is one of the largest rivers in the Riau Province. A study on the water quality of the Indragiri River based on Saphrobic Plankton Coefficient was conducted on July 2018. Samples was taken from three sampling points, far from human settlement, in the delta and close to human settlement. There were 3 sampling points in each station. Samples were taken 3 times, once a week. Parame…
Mystus nigriceps is present in the Tapung Kiri River. A study aims to understand the reproductive biologi of M. nigriceps has been conducted from April to May 2018. Fish sampling were conducted once/ week. Parameters measured were sex ratio, gonad maturnity level, gonad somatic index (GSI), fecundity and egg diameter. Results shown that there were 37 males and 63 females (sex ratio 1:2). There …