In the swamp area of the Sawah Village, the water quality is affected by pollutant originated from activities conducted around and in the swamp area. The low quality water may negatively affects the growth of Monopterus albus and it is reflected in the growth pattern in the otolith of fish living in that swamp. A research aims to understand the pattern of otolith growth rings of the Monopterus …
Ecologically, periphyton community structure can be used to identify water quality of a river. To understand the condition of water quality of the Kampar River based on periphyton community, a research was conducted from May to June 2017.Water sampling is done at 5 point sampling once a week with 3 repetitions. Water quality parameters measured are temperature, brightness, turbidity, current ve…
Sepinang Lake is one of oxbow lakes located in the Pangkalan Serik Village. A research aims to understand the limnological condition of the Sepinang Lake based on physical–chemical parameters has been conducted in March-April 2018. There were three sampling points, namely in the inlet, in the middle of the lake and in the end of the lake. In each sampling point, water was sampled from the sur…
The activities of petroleum drilling, ferry ports and leakages of underwater pipeline caused oil pollution in the coastal area of the Mengkapan Village.The oil pollutant will be carried by the waves and settles to the sediment and it may causing genetic changing in the microorganisms present in the sediment. The presence of oil pollution may trigger gene mutation in specific bacteria and it may…
Indragiri River is inhabited by many typs of gastropod. A research aims to understand the community structure of the gastropod in that river has been conducted in June-July 2018. There were 3 stations, the river bank far away from inhabitants settlement (Station 1), at the small island in the river center (Station 2), the river bank near from inhabitants activity (Station 3) and in each station…
Pekak Lake is one of oxbow lakes located in the Buluh Nipis Village. A research aims to understand the limnological condition of the Pekak Lake based on physical – chemical parameters has been conducted in March-April 2018. There were three sampling stations namely Station 1 (inlet), Station 2 (in the middle of the lake), and Station 3 (outlet). In each station there were two sampling points,…
EM4 fermented restaurant liquid waste is rich in organic materials and can be used as nutrient source for growing Chlorella sp. A study aims to understand the best concentration of the waste has been conducted in July – August 2018. The waste was added to aquades and there were 4 treatments applied, P0 (0%), P1 (25%), P2 (40%), P3 (55%). Then 100 ml of Chlorella sp. cultured was mixed with 5 …
Nygard Index can be used to determine the trophic state of waters. Calculation of this index is based on the number of phytoplankton species that are belonged to these following groups, namely Chlorococcales, Euglenophyceae, Centric diatom, Myxophyceae and Desmidiaceae. To understand the trophic state of the Sepinang Lake, a research has been conducted on March – April 2018. There were 3 samp…
Hampala macrolepidota fish is a freshwater fish that inhabit the Kampar Kiri River. To understand the morphometrical, meristical characteristics and growth pattern of this fish, a research had been conducted from February-April 2018. There were 52 fishes (102-330 mm SL and 30.92-990 g BW) were captured from the river. There were 26 morphological characteristics measured and 11 meristical charac…
Kampar Kiri River is one of the rivers that are polluted due to human activities along the river. Decrement of water quality may affect the growth of fish and it is reflected on the pattern of otolith growth rings. A research aims to understand the pattern of otolith growth rings in the H. macrolepidota was conducted in January to March 2018. Sampling was done four times for two months. The fis…
Sail River is one of the rivers polluted by heavy metals in Riau. High Cu and Cd concentration in the water and sediment may affects the living of organisms in the rivers, including silk worm. A research aims to understand Cu and Cd concent in the water, sediment and silk worm (Tubifex sp.) in that river was conducted in December 2017 – January 2018. Samples of water, sediment and silk worm w…
There were several human activities around the Sepinang Lake that contribute the input of organic and anorganic matter and thus influence the type and density of zooplankton. To understand the types and density of zooplankton in the Sepinang Lake, a research has been carried out in March-April 2018. There were three sampling points, namely in the inlet, in the middle of the lake, and in the end…
There were several human activities around the Sepinang Lake such as agriculture and palm plantation contributes the input of organic and anorganic matter that influence the type and abundance of phytoplankton. To understand the types and abundances of phytoplankton present in the Sepinang Lake, a research has been conducted in March-April 2018. There were three sampling points, namely in the i…
Sail River has been polluted by heavy metals, especially Fe and Cr. Those heavy metals may accumulate in the body of aquatic organisms, including Tubifex. This research aims to understand the content of Fe and Cr in the water, sediment and Tubifex obtained from the river. Sampling was done three times, once in two weeks, from December 2017 - January 2018. Samples of water, sediment and Tubifex …
Ompok hypophthalmus is one of freshwater fish that inhabit the Tarai River. To understand the type of food consumed by O.hypophthlamus, a study has been conducted on April-June 2018. The fish was captured using a gill net and a scoop net. There were 105 fishes captured, that was consisted of 77 fishes with filled stomach and 28 fishes with empty stomach. Stomach content of the fish was analyzed…
Osteochillus hasselti is present in the Tarai River that has relatively good water quality, as well as in the Sibam River that has polluted water. The water condition of the rivers my affects the fish health status in general. A study aimed to understand the histological structure of gill of the fish from those rivers has been conducted from February to April 2018. Fish organs were histological…
Anabas testudineus is a type of freshwater fish that living in swamp area. Information on biological, including morphometric, meristic, and growth patterns of the fish is rare. To understand the morphometrical and meristical characteristics, and growth patterns of the fish, a research had been conducted from April to May 2018. There were 100 fishes (62.54-133.08 mm TL and 10.66-95.45 gr BW). Th…
Periphyton is a sessile microscopic organism that attach on certain substrate. Research aims to determine the type and abundance of periphyton attached on PVC pipe substrate has been carried out in April-May 2018 in the Air Hitam River. There were three sampling stations, namely S1 (in the upstream), S2 (in the middle of stream) and S3 (in the downstream). Samplings were conducted once/week for…
Ompok hypophthalmus Bleeker is one of fish that live in the Tarai River, a polluted river in Riau. The quality of water in the river may affects the fish health status in general, including its gill structure. A study aims to understand the histological structure of the gill of fish living in the Tarai River has been conducted in April 2018. The gill were histologically processed through alcoho…
Ompok hypophthalmus is freshwater fish that inhabit the Tarai River. That fish has high economic value, and it is more than Rp 60.000/kg. Information on biological aspects of this fish, including morphometric, meristic, and growth patterns, however, is rare. To understand the morphometrical, meristical characteristics and growth pattern of this fish, a research had been conducted from April-Jun…