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Journal : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

Distribution Pattern and Sex Ratio of Lokan Shellsfish (Batissa violacea) in the waters of the Padang Birik-birik Village, North Pariaman District, Pariaman City Adila, Melin; Tanjung, Afrizal; Efriyeldi, Efriyeldi
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 6 (2019): Edisi 1 Januari s/d Juni 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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ABSTRACT This research was conducted in January 2019 at the Padang Birik Village, North Pariaman.The purpose of this research was to determine the pattern of distribution, abundance, sex ratio and frequency of lokan shellfish (B. violacea) size. The methods of this research was the survey methods,where the research station consists of 3 stations that werestation 1 in the mangrove area of Padang Birik-birik Village, station 2 was located in the estuary area close to the beach of Padang Birik -birik Village, station 3 was located adjacent to the coastal residential area in the village of Padang Birik –birik.Analysis was carried out in the Marine Biology Laboratory, University of Riau. The results of this study are the distribution pattern in the mangrove ecosystem clustered and the distribution pattern in the residential area were evenly distributed. The highest abundance was found in the mangrove ecosystem and the lowest was in residential areas. Sex ratio are generally male and female are balanced (1: 1.02). The most commonly found class of shellfish size 38,5-49,5 mm.Keywords: Lokan shells (B. Violacea), distribution patterns, abundance, sex ratio, frequency of size
ANALYSIS OF OIL CONTENT IN SEDIMENTS AND RELATIONSHIP WITH MAKROZOOBENTHOS ABUNDANCE IN SUNGAI PAKNING WATERS OF BENGKALIS REGENCY RIAU PROVINCE Rosiana, Kenny; Amin, Bintal; Efriyeldi, Efriyeldi
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 6 (2019): Edisi 1 Januari s/d Juni 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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ABSTRACT           This research was conducted in January - February 2019. The purpose of this research was to analyze the oil consentration in sediments, species and abundance of macrozoobenthos, the relationship between the oil content in sediments and the abundance of macrozoobenthos. Four sampling stations with three replications in each station were surveyed. The results showed that the average oil consentration in sediments in the Stasions 1, 2 and 3 has exceeded the threshold level of the Department of Water Resources Quality Assurance / Quality Control Program which is> 1000 ppm which means that these stasions have been polluted by oil. Whilst at station 4 is still within safe limits.The types of macrozoobentos found in Sungai Pakning waters were Coenobita cavipes, Telescopium telescopium, Strigatella litterata, Cyclograpsus, Nassarius echinatus, Anadara granosa, Antoctodea, Littoraria scabra, Strigatella paupercula, Ancila, Cerithidea obtusa, and Nassarius olivaceus. The highest abundance was at Sei Selari port while the lowest abundance is around the tourist area of Pangkalan Jambi Mangrove Forest. Based on simple linear regression, the relationship between the oil content in sediment with the abundance of macrozoobentos y = 22.541-0.0191x with the coefficient of determination (R²) = 0.2437 and the value of the correlation coefficient (r) = 0.49. The value of r states a moderate relationship with a constant value b which is negative which indicated that the higher the oil content, the lower the macrozoobenthos abundance in sediment. Keyword: Sungai Pakning, Oil, Sediment, Macrozoobenthos
ANALYSIS DISTRIBUTION OF MANGROVES IN THE BANTAN DISTRICT, RIAU PROVINCE USING SATELLITE IMAGE DATA LANDSAT 8 S. Pane, Rolis; Mubarak, Mubarak; Efriyeldi, Efriyeldi
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 5 (2018): Edisi 2 Juli s/d Desember 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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ABSTRACTThis study aims to determine the distribution of mangroves and map the mangrove using satellite image data in the district of Bantan, Riau Province. Determination of the sampling location with purposive sampling with 3 station point, namely Jangkang Village, Selat Baru Village and Bantan Tengah Village, Bantan District. This research was carried out in April 2018 in Bantan District. Then analyzed in the Oceanographic Physics Laboratory Department of Marine Sciences, Riau University. The results of analysis of February 2018 landsat 8 image recording were 184.251 ha. The highest tree density in3 station points, namely Rhizophora apiculata, namely 500 ind/ha and the lowest tree density, Bruguiera gymnorrhizaand Xylocarpus granatum with 33.33 ind/ha. The highest seedling density wasRhizophora apiculata, wich is 2.000 ind/ha and the lowest density Bruguiera gymnorrhizawith 133.33 ind/ha. The number of mangrove species found were Rhizophora apiculata, Avicennia alba, Sonneratia ovata, Rhizophora mucronata, Xylocarpus granatum, and Bruguiera gymnorrhiza.      Keyword: image data, mangrove, Bantan District
Toxicity of Eucheuma cottonii seaweed extract with Methanol and N-Hexane solvents for Artemia salina larvae Kaharudin, Zakaria; Nurrachmi, Irvina; Efriyeldi, Efriyeldi
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 5 (2018): Edisi 2 Juli s/d Desember 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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Abstract Seaweeds are very popular in the world of commerce, in science known as algae. Algae consists of four classes: Rhodophyceae (Red Algae), Phaeophyceae (Brown Algae), Chlorophyceae (Green Algae), and Cyanophyceae (Green-blue algae). Seaweed contains secondary metabolite compounds in the form of alkaloids or flavonoids that are useful as medicines and other purposes such as cosmetics and other industries. Seaweed is known to be rich in essential nutrients, such as enzymes, nucleic acids, amino acids, minerals, trace elements and vitamins A, B, C, D, E and K so it is also known as traditional medicine for cough, asthma, bronchitis, tuberculosis, abdominal pain, fever and rheumatism. This research was conducted in February - March 2018 in Sugie Village, Karimun Regency, Riau Islands Province, which aims to produce seaweed extract E. cottonii using Methanol and N-Hexane solvent and knowing LC50 value of Seaweed extract E. cottonii. Data were obtained by using BSLT (Brine Shrimp Lethality Test) method. The results of the study showed that the extract obtained from 5 kg of seaweed (wet weight) as much as 513 mL of concentrated extract. Seaweed extract with type E. cottonii was toxic to test animal A. salina. The LC50 value of E. cottonii extract dissolved in methanol was 40.2438 ppm.Keywords: toxicity, Extract of Seaweed, Desa Sugi 
COMMUNITY STRUCTUREECHINODERMATA AT PANDARATAN BEACH PONDOK BATU SUBDISTRICT SARUDIK DISTRICT TAPANULI TENGAH REGENCY Sihombing, Kelvin; Efriyeldi, Efriyeldi; Zulkifli, Zulkifli
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 6 (2019): Edisi 2 Juli s/d Desember 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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                                                  ABSTRACT Echinodermata is a thorn-skinned animal and consists of 5 (five) classes namely Asteroidea, Ophiuroidea, Crinoidea, Echinoidea and Holothuroidea. Echinoderms can be found in waters with coral, sand and seagrass substrates. The research was conducted in March to April 2019. The purpose of this study was to determine Echinodermata species found on the coast of Pandaratan and the community structure of Echinoderms which included abundance, relative abundance, diversity, uniformity, dominance, and distribution patterns at each observation station in coastal waters of Pandaratan. The method used in this study is the survey method and the determination of the location of the observation is determined by purposive sampling. The results showed that Echinodermata found at the observation station on the coast of Pandaratan consisted of 3 classes and 4 species, namely Archaster typicus, Diadema setosum, Holothuria atra and Holothuria scabra. The abundance of Echinoderms is in the range of 6.22 - 6.78 ind / m2. Relative abundance of Echinoderms on the coast of the Pandaratan it is estimated that in Archaster typicus species at station I with a percentage of 100%. The distribution pattern of Echinoderms consists of 1 (one) distribution category, namely grouping. Echinodermata diversity index is in the range 0 - 1.7391. The uniformity index has a range of values of 0 - 0.9135 and the dominance index has a range of values of 0.1422 - 1.  Keywords :Echinodermata, Abundance, Relative Abundance, Diversity, Uniformity, Dominance, Distribution Patterns