Articles

Saline effect of different heavy metal accumulation of pb and Zn in shells of blood (anadara granosa) Putra, Dharma Eka; Siregar, Yusni Ikhwan; Nurrachmi, Irvina
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 1, No 2 (2014): Wisuda Oktober Tahun 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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Abstract

Accumulation of Pb and Zn in Blood Shells can be seen that the Shellfish not respond toheavy metal that accumulates in the body at different salinity. Evaluation of the abilityaccumulation Shellfish Blood (Anadara granosa) against Pb fluctuated. While metals Zn showeda fairly high response in the process of accumulation of heavy metals in blood Shells.The concentration of Pb at 20 ppm salinity treatments were the highest found in bothreplicates with a concentration of 0.05 ppm which is equal to 0036 mg / g. While the data waslowest for the first repeat also with a concentration of 0.05 ppm was 0.0027 mg / g. While theconcentration of Zn in the treatment of 20 ppm the highest salinity found in both replicates witha concentration of 2 ppm which is equal to 0.86 mg / g. While the Zn concentration was lowestfor the second replay with 1.5 ppm concentration of 0.38 mg / g.Water quality at each research station there was no difference so far. However, waterquality in the study site contained a water quality to support shellfish life blood. Initialtemperature in this study is the final temperature is 290C and 280C.Keywords: Heavy Metal, Anadara granosa, Salinity
DISTRIBUSI MAKROZOOBENTHOS DI PERAIRAN AEK MANIS KABUPATEN SIBOLGA SUMATERA UTARA Nurrachmi, Irvina; ', Zulkifli; Waty, Esra
Berkala Perikanan Terubuk Vol 38, No 1 (2010): Februari 2010
Publisher : Fakultas Perikanan dan Kelautan, Universitas Riau

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Abstract

This research was conducted in May 2009 in between District AekManis waters Sibolga North Sumatera in order to determine the correlationsediment organic material content and makrozoobenthos abundance.Determinantion of the research station was randomly composed of 4 station and 5sampling point where each point sampling distance of 200 meters wich werebased on the initial sampling paoint. Makrozoobenthos encountered and thestudy area there 26 genera of 3 classses, namely class gastropoda, bivalve.Polychaeta. Individuals from the class of individuals who gastropoda us mostoften found. On the whole it can be seen that the relation between sediment organicmaterial content and makrozoobenthos abudance show a positive correlation, thehighercontent of organic material wiil lead to the higher of the makrozoobenthosabundance.
THE CORRELATION BETWEEN OIL CONTENT AND ABUNDANCE OF DIATOMS IN THE WATERS OF TANJUNG BALAI KARIMUN, KARIMUN REGENCY RIAU ISLANDS PROVINCE Yunus, Budi Andri; Nurrachmi, Irvina; Nedi, Syahril
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 4, No 2 (2017): Wisuda Oktober Tahun 2017
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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The research was conducted in April 2017. The purpose was to analyze the oil content, to determined type and abundance of diatoms, and to determine the correlation between oil content and abundance of diatoms in the waters of Tanjung Balai Karimun, Riau Islands Province. Survey method used consisted of four stations with three replications. The results, the average value of oil content ranged between 0.1820-0.5413 ppm, and the abundance of diatoms were between 54-132 ind/l. The ditoms which composed of 12 species namely Bacillaria sp., Coscinodiscus sp., Fragilaria sp., Isthemia sp., Guinardia sp., Lyngbya sp., Leptocylindrus sp., Nitzschia sp., Pleurosigma sp., Rhabdonema sp., Rhizosolenia sp., and Streptotheca sp. The correlation between oil content and the abundance of diatoms was negatively strong which meant the higher the oil content the decreased the abundance of diatoms in Tanjung Balai Karimun waters. The equation regretion was y = 135.0-149.7x, and the determination coefficients (R2) = 0.561 and the coefficient correlation (r) = 0.749.Keywords: Correlation, abundance, diatoms, oil content, Tanjung Balai Karimun.
THE ANALYSIS OF NITRATE AND PHOSPHATE CONCENTRATION WITH DIATOM ABUNDANCE IN AIR HITAM STRAIT OF MERANTI ISLANDS REGENCY OF RIAU PROVINCE Marpaung, Andre Thessalonians; Nurrachmi, Irvina; Ikhwan, Yusni
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 2, No 1 (2015): Wisuda Februari Tahun 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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The research was conducted in July 2014 in Air Hitam Strait of Meranti Islands Regency of Riau Province. This research aims to analyze the concentration of nitrate and phosphate and the relationship with diatom abundance. The samples were taken from 4 stations and each station was divided into 3 sampling points. The result showed the average value of nitrate and phosphate concentration were 0.122 mg/L and 0.021 mg/L. This research identified 12 genus of diatom. The highest abundance of diatom was found in Station 3 around of the floating cage locations (162.96 Ind/L) and the lowest was at Station 4 around harbor (111.11 Ind/L). The result of the simple linear regression of nitrate and phosphate concentration showed a positive relation with diatom abundance, that means if the concentration of nitrate and phosphate are raising the diatom abundance was also increasing.Keywords: Air Hitam Strait, Nitrate, Phosphate and Diatom
KERANG DARAH (Anadara granosa) ABUNDANCE IN COASTAL WATER OF TANJUNG BALAI ASAHAN NORTH SUMATERA Tanjung, Afrizal; Nurrachmi, Irvina
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 1, No 1 (2014): Wisuda Februari Tahun 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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The research was conducted in December 2012 in Tanjung Balai AsahanCity of North Sumatera Province. This research aim was to know the density of A.granosa. The research used survey method. Collection of A. granosa wasconducted once, that is when ebb period. The sampling was based on the quadrantof 1x1 m² lied on the transect line. Each quadrant was divided into 25 subquadrants with each of 20x20 cm².The results showed that the high abundance was recorded at the middleintertidal zone of station I with the average of 48.3 ind/m². There was nodifference in the cockle density between the upper and middle zones. The t testshowed with the result of 0.603 > 0.05 meaning that there was no diffrencebetween the two zones.Keyword : Anadara granosa, Abudance, Tanjung Balai Asahan, Intertidal
DISTRIBUSI DIATOM EPIFITIK SECARA VERTIKAL PADA BATANG Avicennia sp DI KAWASAN MUARA SEI UNDAN KABUPATEN INDRAGIRI HILIR N, Susiyanti.; Siregar, Sofyan Husein; Nurrachmi, Irvina
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 1, No 1 (2014): Wisuda Februari Tahun 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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This research was conducted from April-Mei 2013 in the Waters around the Estuary Sei Undan, Kabupaten Indragiri Hilir, Riau Province. The aim of this research is to understand the distribution and abundance of epiphytic diatom presenting on the trunk of the Avicennia sp which is related to water quality factor. Survey method was applied on this research where data were obtained by direct observation in the field. The samples of epiphytic diatom were analyzed in the Laboratory of Marine Biology. Water quality parameters were measured in situ.Six species of epiphytic diatom were found on the trunk. The abundance of epiphytic diatom on the trunk ranged from 0 to 9.59 ind/cm2. Beside that, water quality parameters were in the sufficient range for marine epiphytic diatom.Keywords: epiphytic, diatom, avicennia sp, Sei Undan
SEDIMENT CHARACTERISTIC AND DISTRIBUTION PATTERN OF WESTERN COAST OF RUPAT STRAIT Nurrachmi, Irvina
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 2, No 1 (2015): Wisuda Februari Tahun 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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Abstract This research was conducted in May 2014 in the western part of the Rupat strait. The aim of study was to describe the condition of depositional environments in the western part of the Rupat strait. Determination of sampling points done by using purposive sampling method, taking into account the tidal patterns and source of sedimentary material that goes into the waters. The western part of Strait Rupat divided into 12 sampling points. Surface sediments was taken using a grab sampler at all sampling points. Sediment samples were analyzed by using the method of mechanical analysis and the data obtained were processed with analisis. Cluster analysis showed that the study area was divided into three groups (clusters), namely Group I is at the southern and northern of the study area, this area is characterized the strength of the flow of sediment transport the strongest and most stable compared with other groups. Group II was on the edge of the island of Sumatra and Rupat the middle toward the North, this is a transition region between groups I and II were characterized by flow force weaker and more fragile than the first group, but stronger and more stable than group III. Group III were at the edge of the Strait Rupat and Rupat, this area is characterized by the flow of sediment transport the weakest and most unstable compared to other groups.Keyword : Sediment, Characteristics, Distribution Pattern, Rupat Strait
ANALYSIS OF BIOMASS AND CARBON STOCK ON MANGROVE FOREST ECOSYTEM THE TELUK PULAI, VILLAGE OF PASIR LIMAU KAPAS, ROKAN HILIR RIAU PROVINCE Syarif, Muhammad; Nurrachmi, Irvina
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 4, No 1 (2017): Wisuda Februari Tahun 2017
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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This research was conducted in April 2016. Sampling was conducted on mangrove forest ecosystems in Teluk Pulai Pasir Limau Kapas Rokan Hilir in Riau Province. The purpose of the research is to analyze the content of carbon in mangrove forest ecosystems as well as to determine the ability to these ecosystems to store carbon per unit area of mangrove forest area in the village of Teluk Pulai. The method used in this study is a survey method, which observation and sampling on the field and do the samples analyzed in the laboratory. Based on the average yield of total biomass of mangrove highest at station 1 is 198.58 ton/ha while the lowest was at station 3 is 68.80 tons/ha. The average yield of total carbon stocks are highest in station 1 with a value of 300.31 tons/ha while the total carbon stock was lowest for the station 3 with a value of 222.74 tons/ha.Keyword: Teluk Pulai, Mangrove, Biomass, Carbon
BIOAKUMULASI LOGAM CD, CU, PB DAN ZN PADA BEBERAPA BAGIAN TUBUH IKAN GULAMA (SCIAENA RUSELLI) DARI PERAIRAN DUMAI, RIAU Nurrachmi, Irvina; Amin, Bintal; Habibi, Muhammad Nudi
Maspari Journal : Marine Science Research Vol 2, No 1 (2011): Edisi Januari
Publisher : UNIVERSITAS SRIWIJAYA

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Abstract

Determination of heavy metal concentrations (Cd, Cu, Pb and Zn) in  different parts (muscle, bone, scale, intestine, gills and fin) of a croacker fish (S. russelli) collected from Dumai coastal waters were carried out during May to July 2009. The concentration of each metal was determined by AtomicAbsorption Spectrophotometer Perkin Elmer 3110 in the Marine Chemistry Laboratory, Marine Science Department University of Riau Pekanbaru. The results showed that Zn was found to be the highest concentrations in most of the fish body parts analyzed followed by Pb, Cu and Cd in both samples from the western and eastern regions of Dumai coastal waters. In general, the concentrations of all metals analyzed in the present study were higher in fish collected from the eastern region of Dumai coastal waters where more anthropogenic activities such as industries and human habitations along the coastal area were found. The concentration of heavy metals observed were Cd:  0.098 â?? 0.103, 0.189 â?? 0.283, 0.099 â?? 0.289, 0.107 â?? 0.302, 0.182 â?? 0.377 and 0.118 â?? 0.397; Cu: 0.130 â?? 0.198, 0.189 â?? 0.341, 0.082 â?? 0.073, 0.132 â?? 0.285, 0.520 â?? 0.746 and 0.175 â?? 0.337; Pb:  3.979 â?? 4.109, 4.144 â?? 4.601, 0.970 â?? 2.527, 2.853 â?? 4.367, 5.053 â?? 7.074 and 4.637 â?? 6.262 and Zn:  5.713 â?? 5.755, 7.956 â?? 8.558, 4.649 â?? 6.232, 5.730 â?? 7.745, 8.988 â?? 11.115 and 8.777 â?? 10.686 µg/g for muscle, bone, scale, intestine, gills and fins respectively. Concentrations of heavy metals in each body part of the fish were as follow: fin > gills > intestine > scale > bone > muscle for Cd; gills >  bone > fin > intestine > muscle > scale for Cu; gills > Fin > bone > intestine > muscle > scale for Pb and gills > fin > bone > intestine > scale > muscle for Zn. The concentrations of heavy metals in muscle were lower than other analyszed organs in the present study and this was considered to be an advantageous from the human health points of view as because muscle constitute the greatest mass of the fish that is consumed.
ANALYSIS OF ZOOXANTHELLA DENSITY ON CORAL Acropora sp IN SIRONJONG GADANG ISLAND PESISIR SELATAN DISTRICT WEST SUMATRA Affandi, Jefri; Nurrachmi, Irvina
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 2, No 1 (2015): Wisuda Februari Tahun 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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AbstractThis research was conducted in September 2014 in the island of Sironjong Gadang, Koto XI Tarusan, Pesisir Selatan Disctrict of West Sumatra Province. The purpose of this study is to know the effect of depth towards the density of zooxanthella on the type of coral Acropora sp in Seronjong Gadang Island. While the benefits of the research are expected to obtain data and information about the density of zooxanthella on Acropora sp at the different depths. The methodology used in this research was a survey method and for coral sampling used purposive sampling technique, where samples are taken around the Seronjong Gadang Island with 3 different depth according to distribution of Acropora sp Coral reef that surround these waters. Parameter measurements of waters performed at each station. Samples were taken in the field, then followed by analyzing samples in the Laboratory.Depth is one of factor that affect the amount of light intensity that enters into the waters. The light that comes into the waters was symbion zooxanthella needed to perform fotosentesis in his life as the main supplier for coral as host. The deeper the waters, the less light that come into the waters. According to the research, there is the difference between the depth of 1 m, 5 ms and 10ms. The average of Zooxanthella cell in the depth of 1 m are 5.150.125 cell/cm2, then in the depth of 5 m are 3.552.525 cell/cm2, and in the depth of 10 m the average of zooxanthella are 3.242.241 cell/cm2. It means that the amount of Zooxnthella on Acropora sp decreased over by the increase of the depth.Keywords: Coral, Acropora sp, zooxanthella, Sironjong Gadang.