Barnacle is one of the marine biota that belongs to the crustacean class and is one of the sub-classes of Wikipedia, whose life is permanently attached to hard objects submerged at sea and has properties that can damage and shorten the life of a building that it occupies. The purpose of this study was to determine the rate of attachment of barnacles on wood, concrete and plastic (PVC) substrate…
Bathymetry is a measure of high and low seabed where bathymetry maps provide information about the seabed. This research was conducted in November 2018 - January 2019, in the waters of the Sasak coast of West Pasaman district. This study aims to determine the depth and shape of the seabed morphology as well as the type of sediment, The research method used is a survey method, then the sampling …
Inhibiting the life of the Aedes aegypti mosquito is the main way that is done to eradicate DBF, which is popularly done by chemically synthetic insecticides can be used air pollution and poisoning of humans so it needs safer natural incecticides such as compounds derived from mangrove plants. Mangrove Avicennia marina contains saponis, flavonoids, and alkaloids can act as stomach poisons resul…
This study aims to determine the abundance, relative abundance and distribution patterns of gastropods in the intertidal zone of the Teluk Kasai beach. This research was conducted in June 2019 in the intertidal zone of the Teluk Kasai beach Pesisir Selatan District, West Sumatra Province. The method used in this research is survey method of determining the location of the station using purposiv…
This research was conducted from April to July 2019 at the Center for Environmental Technology Laboratory (PTL), Geostech 820 Building, Serpong Region Puspitek, South Tangerang. The aim of this research was to determin growth of Chlorella vulgaris on media added with Pb at different concentrations, and to determine the ability to absorb Pb. The experimental method was conducted by using concent…
Sungai Guntung has a potential for crabs because it still has fairly good mangrove forests in several areas. One of the problems found in the crab catch was high mortality rate caused by disease and ectoparasites. This research aimed to determine the types of parasites that attack crabs and to determine the prevalence and intensity of ectoparasite attacks on crabs precisely and systematically. …
The aim of this research was to find out the influence and biofertilizer different to increase phytoplankton abudance, and water quality parameters. This research was conducted from September to December 2016 in the Peat Land Kualu Nenas village, Tambang Subdistrict, Kampar Regency, Riau Province. The method used in this study is an experimental method, using a Complete Random Design (CRD) with…
There are three main enzymes that play in feed digestion that are protese, amylase and lipase. The activity of each enzyme develops varies depending on fish species, feed, and environmental factors. The aims of this study was to: 1) determine the relationship of larvae age with mouth opening and enzyme activity, 2) determine the relationship of larvae age with the amount of feed consumed and th…
This study aimed to determine the latest condition of terubuk fish resources, the condition stock and its distribution in Riau Province Waters by using acoustic data acquisition. This research was conducted during the period of April to November 2015 and continued until September 2016. This study used survey method. The object of this study was terubuk fish, and the location of this study was h…
Tuhemberua Subdistrict has beautiful coastal that potencial for marine ecotourism area.A research aims to review the objects and issues of marine ecotourism has been conducted from February to April 2017. The study areas Marisa Beach, Tanayao Beach, Botogawu Beach and Fofola Indah Beach. A survey method was applied and data obtained from 189 respondents weredescriptively analyzed. Results sho…
Kryptopterus apogon is one of freshwater fishes that inhabit the Danau Baru oxbow lake. This study aimed to understand the stomach content of the fish living in the lake and also to understand itsreproductive biology during the period of Desember-Februari 2017. The number of fish captured were 45 fishes( 24 females and 21 males). The stomach contentwas analysed using a gravimetry method, while…
Study of carbon stock and CO2 sequestration on coastal ecosystem of the eastern part of Bintan Island Kepulauan Riau Province has been conducted on April 2016. The potencies of carbon stock and CO2 sequestration within conservation area (Station 1) and anthropogenic area (Station 2) on mangrove ecosystem, also tourism area (Station 1) and conservation area (Station 2) on seagrass ecosystem were…
ABSTRACT This research has been held on March-April 2019 in Jago-Jago sea waters of Tapanuli Tengah, North Sumatera. The purpose of this study was to determine the density of species, morphometrics of Enhalus acoroides leaves. The study was also aimed to analyze the effect of sediment particle sizes on density and morphometrics of seagrass leaves. The stations were determined by purposive sa…
ABSTRACT This research was conducted in April 2019 with the aim of finding out the abundance and distribution patterns of gastropods in the mangroves of Anak Setatah Village. Determination of the sampling location is done by purposive sampling, which is to determine the sampling point intentionally based on certain objectives. Sampling was carried out in the mangrove area of Anak Setatah Villa…
ABSTRACT This research was conducted in June 2019 at the Marine Chemistry Laboratory, Department of Marine Sciences, Riau University. The purpose of this study was to determine the ability of blood clam sell ash (Anadara granosa) as biosorbers of zinc (Zn2+). The research was conducted by contacting zinc and blood clam shell ash with the variation of concentration of 14 × 103, 20 × 103 an…
ABSTRACT The study was conducted in June 2019 on Berhala Island, Serdang Bedagai Regency, North Sumatra Province. The research aims to determine the potential of ecotourism in Berhala Island and to analyze the suitability of ecology to be developed as an ecotourism location. The method used in this research was survey method and observative data processing. This research was conducted at thr…
ABSTRACT Karimun Besar is one of islands in the Kepulauan Province that has high anthropogenic activities which produces a certain amount of wastes, especially plastics. The plastic wastes will be degraded into small-particled called microplastic. Due to its small-size and wide-spread distribution caused microplastics could be consumed by marine organisms, such as deposit feeder organisms fr…
ABSTRACT This research was conducted in June 2019 to determined the abudance crown of thorn starfish (A. planci) and the condition of coral reef in Tikus island. 3 Stations with 2 different depth were taken in Tikus island. The result showed that coral reef from 4 meter depth were in middle-good condition. percent cover of Station 1 was 44.4%, percent cover of Station 2 was 59.33% and percen…
ABSTRACT This research was conducted in April 2019 to determined TSS concentrations using Landsat 8 OLI Satellite imagery and of to the coefficient TSS concentrations at period of before and after Lapindo mudflow event using Landsat 8 OLI satellite imagery in Porong River estuary Sidoarjo Regency East Java Province. TSS from 25 sampling points with 3 replication were taken from the estuary. …
ABSTRACT This research was conducted in Lagoi Waters Banyan Tree Bintan Region to observe effect accumulated sediment on coral. Three stations were selected forthe measurement of accumulated sediment was conducted using sediment traps which is apllied in the station of coral observation for 21 days. Point Intercept Transect (PIT) was used for the observation of coral reef. Regression analyses…