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 …
In the Swamp of Sawah Village has waters surrounded by trees and aquatic plants, which function to attach periphyton organisms. Because there are many wood submerged in swamp, the substrate used is a wood substrate (epidendritic). Periphytons is a passive moving organisms, the type and density of periphyton is influenced by water quality. Periphytons is also a water quality bioindicator. This r…
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 July 2017. There were five (5) sampling points, in the upstream (S1), around the floating cages (S2), in the area after the cage (S3 and S4) and in the downstream (S5). Water s…
Kampar Kiri River is located in Riau, there are fisheries and domestic activities that potential in affecting water quality. To understand the abundance of periphyton present in the river, a study has been conducted in April 2017. There were 3 stations namely station 1, station 2 and station 3. Water quality measured were transparency, temperature, disolved oxygen, current velocity and pH. Samp…
Osteochilus hasselti was a type of freshwater fish that inhabit the Tarai River that has good water quality and the Sibam River that has been polluted. The difference of water condition may affects the fish condition in general. A research aims to understand the morphometric, meristic and growth patterns of O. hasselti was conducted from March-April 2018. There were 108 fishes (57 fishes from t…
Mangrove forests in the Sungai Rawa Village has been degraded due to anthropogenic activities. Decrement in mangrove ecosystem will negatively affects the aquatic organims in general, including the gastropods present in that area. To understand the community structure of gastropods in that mangrove ecosystem, a research was conducted on March 2018. There were 3 line transects and in each line t…
Trophic State Index(TSI) can be used to determine the trophic state of waters. The TSI was calculated based on chemical, biological and physical parameters and it is more representative for analyzing the trophical state of waters. To understand the trophic state of the Sepinang Lake, a research has been conducted in March-April 2018. There were three sampling stations, namely Station 1 (inlet a…
Nygaard Indeks is an index which can be used to determined the trophic state of water, based on phytoplankton composition. To understand the trophic state of the Tajwid Lake, a research was conducted on March – April 2018. There were three sampling stations, namely station 1 (inlet area), station 2 (in the middle of the lake), station 3 (distal area of the lake). In each station, there were t…
Tajwid lake is one of the oxbow lakes located in Langgam Sub-District, Pelalawan Regency, Riau Province. This lake is used by the local community as a place to catch fish and tourism objects. The research aimed to understand the primary productivity based on oxygen method in the Tajwid Lake. This research was conducted in March-April 2018. There were three sampling stations namely Station 1 (in…
Sail River has been polluted by heavy metals and those may affects the organs of aquatic organisms, including Notopterus notopterus. To understand the Cd and Fe content in the livers, kidneys and bones of the fish, a study has been conducted on December 2017 to January 2018. Samplings were conducted two times, once/month, in the downstream of the river. The fish samples were obtained from fishe…
Asian softshell turtle ( Amyda cartilaginea) used to nest in the Indragiri River bank, especially in the Lubuk Terentang village. Characteristics of nesting area preferred by the softshell turtles, however are almost unknown. A research aimed to understand the nesting area characteristic of the turtlewas conducted from May- June 2018, coincidence with the nesting time of the turtles. Parameters…
Periphyton is a sessile microscopic organism that attach on aquatic vegetation.A research aims to understand the community structure (types and abundance)of periphtyon in the mangrove ecosystem of the Sungai Rawa Village, has been conducted from June to July 2018.There were 3 sampling area, close to the settlement area, in the ecotourism area and in the natural area with no human inhabitant. Th…
study aims to understand the effectiveness ofEchinodorus palaefolius and Limnocharis flavain absorbing heavy metals from the surrounding water was conducted in March - April 2018. The plants are placed in floating tires.Pb and Cdwere analyzed from the root, stem and leaf of the plant.Samplings were conducted 3 times, once/month.Results shown that the average of Pb and Cd in the water was 0.6220…
Oil spill contaminated water present around the oil well drilling well. The presence of crude oil may trigger gene mutation in specific bacteria present in that area . The bacteria may produce biosurfactant for degrading the oil. A study aims to obtain biosurfactant producing bacteria from oil spill contaminated water around petroleum drilling wells in the PT. Bumi Siak Pusako – Pertamina Hul…