bluuebunny/crossref_metadata_2025 huggingface dataset:
Organizational and legal models for the creation of scientific projects of the “megascience” class
Authors: Lozovskij D L
Published: November 2019

The creation of scientific facilities of the “megascience” class is a complex and lengthy process, for the implementation of which the resources of several states are usually attracted. As a result of the participation of several states in the creation and implementation of a scientific project of the “megascience” class, a need arises for the distribution among the participants of the rights, duties, expenses and powers to manage the project. In this regard, the article proposes an analysis of the organizational and legal models for creating scientific projects of the “megascience” class, possible taking into account the current legislation of the Russian Federation.
Life cycle of the project of creation and operation of the megascience facility
Authors: Nurakhov N N , Kozlov Yu V , Petrov A A , Kravchuk V L
Published: November 2019

In order to create, ensure the functioning and effective use of the megascience-project, it is necessary to have a holistic view of the concept of “megascience”, the basic processes and constraints that accompany this activity and the project life cycle. For this purpose an analysis of the life cycles of various megaprojects was carried out, and as a result of the analysis, the main stages characteristic of all the projects reviewed were identified. Also considered are approaches to the implementation of these stages and a list of possible restrictions and risks is defined. Based on the data obtained, a model for creating a megaproject on the territory of the Russian Federation is proposed, in particular, it is planned to apply the obtained result in the process of creating the International Center for Neutron Research based on the PIK high-flux research reactor. The reported study was funded by RFBR according to the research project № 18-29-15015.
Concentration, distribution and correlation of heavy metals in Asian Moon Scallop (Amusium pleuronectes) and sea water from Indragiri River estuary
Authors: Amin B , Lestari I
Published: November 2019

A study on the concentration, distribution and correlation of heavy metals Pb, Cd, Cu and Zn in seawater and asian moon scallop (Amusium pleuronectes) from Indragiri river estuary has been conducted on April 2018. Samples were collected from six stations representing inner and outer part of the estuary and the analysis of heavy metal was carried out by using AAS Shimadzu AA-7000. The results of the study showed that the average concentration of Pb, Cd, Cu and Zn in surface seawater and scallop were 0.0744, 0.0038, 0.0302, 0.1761 mg/L and 0.3100, 0.5300, 7.8669, 43.1069 μg/g, respectively. The concentrations of heavy metals between stations were significantly different (p<0.05), but no difference found between outer and inner part of the estuary (p>0.05). Heavy metal concentrations in seawater and scallop were positively correlated, except for Pb. The tolerable intake of metals as PTWI (Provisional Tolerable Weekly Intake) was calculated presented. Although the concentrations of all metals were still lower than many reported areas in Indonesian coastal waters, further intensive study is needed in order to determine the toxic metals in the scallop, and not only to report levels of contaminants but also important to compare them with health criteria values. Continuous environment monitoring programs should also be implemented to keep and protect the sustainability of the estuary.
Evaluation on growth, survival and feed efficiency in three generations of domesticated Asian redtail catfish Hemibagrus nemurus (Valenciennes, 1840)
Authors: Radona D , Kusmini I I , Prakoso V A , Kristanto A H , Fakhrurrazi R
Published: November 2019

Domestication is one of the important steps in culturing wild fish into a captive system. This study aimed to evaluate the growth, survival rate, and feed efficiency of three generations (G-1, G-2, and G-3) of domesticated Asian redtail catfish. This study was conducted in the wet laboratory of Research Institute for Freshwater Aquaculture and Fisheries Extension (RIFAFE) Bogor from October to December 2017. The Completely Randomized Experimental Design with three treatments and three replications were utilized in this study. Experimental fish were obtained from mass spawning on three generations of Asian redtail catfish Cirata population. The size of experimental fish ranged between 2-3 cm of length with average weight was 0.32 ± 0.01 g. Fish were maintained in the aquarium (dimension = 70 cm x 50 cm x 40 cm) equipped with recirculation system. The circulation system was equipped with filters (rocks and sands). Each aquarium was stocked with a density of 30 individual 100 L−1. During 40 days of rearing, fish were fed with 10% day−1 of tubifex worms from the total fish biomass. Feeding was carried out three times a day at 07.00 AM, 12.00 PM, and 17.00 PM. The result showed that Asian redtail catfish seedlings from second and third-generation (G-2 and G-3) had significantly different growth performance (P<0.05) compared to first-generation (G-1), with the length gain of 5.57 cm and 5.57 cm, weight gain of 7.98 g and 7.99 g, specific growth rate on length of 2.97 % day−1 and 3.02 % day−1, specific growth rate on weight of 8.18 % day−1 and 8.22% day−1, and survival rate of 82.11% and 84.22%. The biomass value of three generations on Asian redtail catfish did not show any significant differences (P>0.05), while the best FCR and feed efficiency value (P<0.05) were found on Asian redtail catfish from third-generation (G-3) with a value of 73.00 ± 2.24% and 1.37 ± 0.04.
Microbiological quality (pathogen E. coli bacteria) in the coastal environment of Dumai City, Riau Province
Authors: Lukistyowati I , Feliatra F , Nursyiwarni N , Qoriman A , Leksnono T , Mulyadi A
Published: November 2019

Escherichia coli is a water indicator microorganism. E. coli is found in almost water bodies such as lakes, rivers and seas that come from the feces of human and warm-blooded animals and waters contaminated with organic wastes. Microbiological quality is based on the presence of certain groups of microbes such as microbial pathogens (stomach disease), pollutants (especially E. coli), toxin producers etc. This research was conducted in October 2018. The purpose of this study was to calculate the density of E. coli bacteria in the coastal city of Dumai. This study used the survey method, with 5 stations with 3 sampling points at each station. Calculation of the number of Escherichia coli colonies used the MPN (Most Probable Number) method. The density of E. coli bacteria ranged from 2.37 × 104 to 1.1 × 105 CFU / 100 ml. The highest number of Escherichia coli bacterial colonies was at stations 2 and 3, the lowest was at station 5. The results of the E. coli bacteria resistance test for seven isolates of E. coli and the results of Escherichia coli bacteria resistance to antibiotics showed that there were seven isolates of Chloramphenicol, which included resistance with inhibitory zones ranging from 2.17 to 10.70 mm, 9 bacterial isolates including intermediates with inhibitory zones ranging from 11.90 - 19.33 mm, and one isolate including sensitive with a zone of inhibition of 22.77 mm. In the Penicillin and Isoniazid antibiotics all resistant bacterial isolates with inhibition zones ranged from 0.80 to 4.70 mm and 1.50 - 4.67 mm respectively. The coastal waters of the city of Dumai have passed the threshold for cultivation.
Shark fisheries and trade characteristic in North Maluku, Indonesia
Authors: Ichsan M , Simeon B M , Muttaqin E , Ula S , Booth H
Published: November 2019

The waters of North Maluku Province are known as a hotspot for sharks in Indonesia. However, despite the richness and importance of shark population in this area, information about shark fisheries and trade remains limited. The aim of this research was to fill this knowledge gap by identifying the characteristics of shark fisheries and trade in this region. We conducted interviews and field observations during August 2017 in two case study regencies: South Halmahera and Morotai. The result show that targeted shark fishing is practiced in Mano village, Gomumu Island, South Halmahera and Posi-posi and Leo-leo Villages of Rao Island, Morotai Island. Mano village’s fishery consists of 48 vessels, with the main fishing grounds in Halmahera and Papua waters. Posi-Posi and Leo-Leo Villages operate a fleet of 12 vessels, within the main fishing ground in northern Morotai waters. We identified two traders of shark products in Morotai Island Regency, and seven traders in South Halmahera Regency. The primary traded commodities are shark fins and meat, predominantly. Fins are transported by boat to traders in Manado, Surabaya, Bau-Bau and Makassar, while meat is sold on to traders in Jakarta. We expect that the results of this research can be used to direct attention and resources towards managing shark fisheries and trade in North Maluku Province in the future.
Ichthyofauna in coal mining area of Mifa Bersaudara Company, Aceh Barat District, Indonesia
Authors: Nur F M , Batubara A S , Abdan M , Syukran M , Muchlisin Z A
Published: November 2019

Mifa Bersaudara Company (PT. Mifa Bersaudara) is one of the mining company operated in Aceh Barat District, Indonesia. Several small rivers and peat swamps are present in the concession area of the company. These waters have potency on fisheries; However, presently, there was no data on the ichthyofauna in the concession area of this company. Hence, the objective of the present study was to inventory the ichthyofauna in the small rivers and swamps around the concession area of PT. Mifa Bersaudara as a baseline data for monitoring program in the future. The sampling was done from 28 to 29 January 2019 at 12 sampling sites. The fish sample was caught using the casting net and fish trap from 06.00 AM to 5.00 PM. A total of 659 individual of fishes were sampled during the survey, it belongs to 7 orders, 11 families, 17 genera and 23 species. Cyprinidae and Rasbora argyrotaenia are the predominant family and species, respectively. One species of alien fish Oreochromis niloticus was recorded during the study.
LWRs, condition factors and isopod parasites infection of the sumbo fish Selar crumenophthalmus (Pisces: Carangidae) in Lampulo fishing port, Banda Aceh, Aceh Province, Indonesia
Authors: Perdana A W , Batubara A S , Nur F M
Published: November 2019

In addition, the research on S. crumenophthalmus is very limited in Indonesia. The research that has been done is identification of fish species in Lampulo Fishing Port, Banda Aceh. But research on its stock assesment in wild has never been done. The aimed of this study is to analyze the length-weight relationship (LWRs), condition factors and Isopod parasites infection of the sumbo fish (Selar crumenophthalmus) in Lampulo Fisheries Port, Banda Aceh. The survey was conducted from February - April 2019. A total of 164 fish samples were collected. The results showed that the highest coefficient of b was recorded in March, where the b value of S. crumenophthalmus were 3.13 indicating an allometric positive growth pattern. The average Fulton’s condition factor (K) was 2.97 and the average Relative weight (Wr) condition factor was 100.26. The Anilocra sp. species of Isopod parasites were found in the gill layer of fish samples. The average prevalence and intencity value were 4.48 % and 0.04 ind/fish. The results of K and Wr analysis showed good conditions in the S. crumenophthalmus habitat were indicated that the aquatic environment is in a stable condition.
Next-generation sequencing yields the complete mitochondrial genome of mud spiny lobster, Panulirus polyphagus (Crustacea: Decapoda) from Madura water
Authors: Andriyono S , Alam M J , Pramono H , Abdillah A A , Kim H W
Published: November 2019

The circular mitochondrial genome of the mud spiny lobster, Panulirus polyphagus was determined by next-generation sequencing (NGS) platform. The mitochondrial genome of P. polyphagus was 15,707 bp in length, which comprised 13 protein-coding genes, 22 tRNAs, two ribosomal RNAs (12S and 16S). A non-coding putative control region (739 bp) was located between 12S ribosomal RNA and tRNA-Ile. Except for COX1, 13 protein-coding genes initiated with the conventional start codon (ATG). The phylogenetic analysis with the mitogenomes in family Palinuridae showed P. polyphagus was clustered together with four congener species forming a clade, and Panulirus versicolor is closest to P. polyphagus.
Improved level of environmentally friendly boat liftnet fishing gear through Underwater Dip Light Technology (UFL +)
Authors: Fajriah F , Mustafa A , Rais M , Isamu K T , Arami H
Published: November 2019

Boat Liftnet gear is a fishing gear that requires special attention in the biological, economic, technological and social aspects. Therefore proper management is needed in the development of a liftnet fishery business. This study aims to identify the composition of the boat liftnet catches, identify the level of catch and discard, determine the arrival patterns of fish primarily by catch and discard fish, and provide information on underwater fish lamp design that is expected to reduce the catches by catch and discard. The study was conducted in Mekar Village, Konawe Regency, Southeast Sulawesi Province. In May - July 2019. The research method used was through experimental fishing. The results showed that the boat liftnet is less environmentally friendly, the pattern of arrival of fish in the area around the light source consists of solitary and clustered, there is a pattern of fish behavior as a form of adaptation to light where the fish will stay away after about 40 minutes around the lamp, the device design is needed underwater dip lights are enhanced with the addition of several other supporting devices such as CCTV cameras and monitor screens, hereinafter referred to as UFL + (Underwater Fish Lamp Plus) with the aim of streamlining the capture time and reducing the number of by catch and discard.
Biological aspects of fish indo pacific tarpon (Megalops cyrinoides Broussonet, 1782) at Belawan River
Authors: Khairul K , Machrizal R , Harahap A , Gultom M , Harahap RD , Nazliah R
Published: November 2019

The purpose of this study was to analyze the distribution pattern, size and high-length relationships of the Indo Pacific tarpon Megalops cyrinoides in the Belawan River. This is exploratory research with purposive randomly sampled method. The results showed that Morisita index value were reached of 0.299 in station 1, 0.121 (station 2), 0.277 (station 3), thus the distribution of indo pacific tarpon have a uniform spread pattern. Based on total sample of fishes divided into 3 classes: small size from (9.0 – 24.9 cm), medium from (25 – 40.9 cm) and large (> 40 cm). The dominant fish belongs to the young fish category. Similarly, caught fish was light and medium weight category (young fish). The results of the morphometric fish followed the equation: W = 0.3978 L0,9980, with coefficients of determination (R2) = 0.8732.
Dietary Terminalia catappa leaves reduced growth performance but increased hematological profiles and survival rate of Pangasianodon hypophthalmus
Authors: Nugroho R A , Aryani R , Anggraini W D C , Hardi E H , Rudianto R , Kusumawati E , Sudrajat S , Nur F M , Manurung H.
Published: November 2019

The aim of this study was to evaluate the effects of different levels dietary supplementation of Terminalia catappa leaves (TCL) viz: 250; 500; and 1000 g kg−1 on the growth, blood profile, and survival of Pangasianodon hypophthalmus. Four groups including control of four replications of forty fish (Initial weight 0.230±0.004 g; initial length 31.43±0.18 mm) per tank were fed the test diets for 12 weeks. Results showed that dietary 1000 g kg−1 of TCL negatively affected all growth parameters, WBC, Hb and Plt. Feed conversion ratio (FCR) was found significantly higher than other groups, while RBC and Htc were not affected by any concentration of TCL supplementation. Further, fish fed 250 g kg−1 TCL in the diet showed significantly higher survival. This finding concluded that TLC which contains tannin, flavonoid, and some important phytochemicals reduced the growth of fish but significantly increased survival and FCR.
Feeding habits and length-weight relationship of giant marbled eel Anguilla marmorata in the Brayeun River, Aceh Besar District, Aceh Province, Indonesia
Authors: Romanda R , Putra D F , Dewiyanti I , Nurfadillah N , Batubara A S , Mustaqim M , Muthmainnah C R , Nur F M , Muchlisin Z A
Published: November 2019

Information on the feeding habit and length-weight relationship are crucial for fisheries management. Hence, the objective of the present study was to examine the feeding habit and length-weight relationships of the giant marbled eel Anguilla marmorata harvested from Brayeun River, Leupung sub-district, Aceh Besar District, Aceh Province, Indonesia. The survey was conducted from March to June 2017 (Rajab to Ramadhan 1438 Hijri Calendar). The sampling was done four times a month for three months on a dark night at new and old moons according to of lunar cycle (Hijri Calendar) for three months. A total of 38 eels were caught during the study and stomach content analysis showed that crabs and shrimp were the main food items for eel A. marmorata, while earth worms was a complementary food. This finding is indicating that A. marmorata is carnivorous. In addition, the length-weight relationship revealed that giant marbled eel had an allometric positive growth pattern, and the condition factors indicate the rivers are still in optimum condition and support fish life.
Blood condition of Pangasius hypophthalmus fed with turmeric enriched pellets and infected with Aeromonas hydrophila
Authors: Riauwaty M , Windarti W , Yulika Sari T E , Adelina A
Published: November 2019

Turmeric is commonly used as stimulant and it is an important ingredient in tradisional herbal medication. A study aims to understand the blood condition of Pangasius hypophthalmus fed on turmeric enriched pellets and were infected with Aeromonas hydrophila has been conducted from August to October 2018. There were 3 treatments applied; namely P1: Fishes were fed with turmeric enriched pellets of 0.5 g/Kg feed, P2 (0.7 g/Kg feed) and P3 (0.9 g/Kg feed). The negative control (Pn) were the fish that was not receive any treatment, while the positive control (Pp) was the fish that was infected with A. hydrophila, and was not given turmeric powder. Fourteen days after being fed on turmeric enriched pellets, the fishes were infected with Aeromonas hydrophila (0.1 ml of 108 of A. hydrophila culture). Totally 15 fishes from each treatments were studied. Blood were taken from vena caudalis using 1 ml syringe wet with 10% EDTA and then were checked using binocular microscope for erythrocyte and leucocyte number. Haematocrite and leukocrite levels and types of leucocyte were also studied. Results shown that the blood condition of turmeric treated fishes were different. The total erythrocyte of the negative control (Pn) fishes was 2.136.670 cells/mm3, the positive control (Pp) was 1.423.300 cells/mm3 and that of the treated fishes ranged from 1.520.000 to 2.886.700 cells/mm3. While the number of the leucocytes of the negative control fishes was 153.200 cells/mm3, the postive control (Pp) showing infectious condition with 726.000 leucocyte cells/mm3. The leucocyte number of the turmeric treated fishes (P1, P2 and P3) showing normal values, ranged from 107.000 to 2.069.000 cells/mm3. Based on data obtained, it can be concluded that the turmeric enriched pellets improved the ability of the fish to cope the problems caused by A. hydrophila infection
Length-weight relationships and condition factors of the Groe Fish Barbodes binotatus (Pisces: Cyprinidae) in Nagan River, Aceh Province, Indonesia
Authors: Batubara A S , Nur F M , Zulfahmi I , Rizal S , Efizon D , Elvyra R , Muchlisin Z A
Published: November 2019

The groe fish Barbodes binotatus is one of the commercial freshwater fish occurred in Nagan River, Aceh Province, Indonesia. To date, information on the growth pattern and condition factor of this species were not available. Hence, the objective of the present study was to examine the growth pattern and condition factors of the groe fish B. binotatus in Nagan River, Nagan Raya District, Aceh Province, Indonesia. The sampling was conducted for 12 months from January 2016 to December 2016. The sampling locations were determined based on the information from local fishermen. The Linear Allometric Model (LAM), Fulton’s and Relative Weight conditions factors were utilized to analyse the length-weight relationships and condition factors of the groe fish. A total of 409 fish samples were collected during the study. The results showed that the highest coefficient of b was recorded in October, where the b value was 5.19 with the average b value was 2.91 indicates an isometric growth pattern. The average Fulton’s condition factor (K) was 2.41 and the average Relative weight (Wr) condition factor was 100.52. It is concluded that fish had an isometric growth pattern and based on K and Wr value, the results indicate that the waters are still in good condition and supports the life of fish. Furthermore, the availability of food sources, low competitors, and low predators indicate that the aquatic environment is in a stable condition.
The analysis of income level of skipper fishermen in Belawan Bahari Village, Medan Belawan District
Authors: Lubis M M , Effendi I , Lubis Y , Lugu S
Published: November 2019

The Indonesian economy has experienced fairly good growth in recent years, especially in the fisheries and marine sector. The province of North Sumatra is one of the regions with a potential economic structure in fisheries considering the average number of fish produced in the region monthly. The puIDRose of this study therefore was to determine the income level of skipper fishermen in Belawan Bahari Village, Medan Belawan District. The study population furthermore was made up of skipper fishermen and the data were collected through observation and survey methods. The descriptive method of analysis was employed in this study and based on the observation of 30 skipper fishermen, the average total cost of production of anchovy fish, most common in the region, was IDR. 49,247,767. The average catch was equal to 1,949 kg, while the average distance traveled by sea was 31 km. The average total revenue of the fishermen was IDR. 58,474,000 and the total income was IDR. 9,226,233. Also, the R / C ratio obtained was 35.4 with an average of 1.
Mapping of archaeological structure along east-coast of Aceh Besar District, Indonesia based on total magnetic field anomalies
Authors: Asyqari A , Sugiyanto D , Yanis M , Abdullah F , Ismail N
Published: November 2019

The coast of Aceh along the northern tip of Sumatra had an important role since the beginning of the first millennium AD. The area was used as a transit point for the maritime silk road of the gate of the Malacca Strait. Many old settlements and ancient fortresses were found on the area. One of them is Indrapatra fortress. At present, the Indrapatra fortress has been slowly damaged by weathering and was also hit by disasters. Parts of the main building is still intact, while the other parts have been damaged and buried by sand deposits. In order to preserve the building, some actions need to be taken such as re-mapping the existence buildings and the buried parts as well. For this reason, a geomagnetic survey has been conducted to delineate the remains of the building at the subsurface. Data of total magnetic field intensity were acquired in an area of 31,255 m2 with a grid of 3 meters for each station so that the measurement covered the whole area of the target site. Total magnetic field anomalies were calculated using diurnal and International Geomagnetic Reference Field corrections. The obtained anomalies represent magnetic objects (archaeological structures) which buried beneath the surface. To obtain a more detailed form of anomalies several transformations, such as analytic signals, tilt derivatives, and horizontal derivatives were applied. The results of the transformations show several circular and elongated anomalies. The circular forms of anomalies are considered as buried wells, and the elongated forms are considered as channels which presumed connected the buildings in the area. The data showed that there are also foundations of the buildings made of stone structures cemented with lime plats.
Microbiological perspectives on the effects of microplastics on the aquatic environment
Authors: Rinanda T , Fathima R , Ramadhani R
Published: November 2019

Plastic waste has been known as threatening pollution, especially to the aquatic environment. Larger-sized plastic particles have noticeable impacts on the marine ecosystem. Current studies have revealed serious menaces of small plastic particles namely Microplastics (MPs). In contrast to the larger particles, little is known about the interaction between MPs and the surrounding microorganisms. MPs pose more threats to the environment and human health due to their abilities to influence the microbial ecology of the marine environment. This paper will discuss the MPs effect on the aquatic environment from the microbiological points of view consisting of the biofilm formation on MPs, the exchange of microbial genes on MPs particles and also the role of MPs as the reservoir for antimicrobial and metal resistance genes.
The phylogeography and taxonomy of a model-species complex, the blue-spotted maskray (formerly Neotrygon kuhlii): a short review
Authors: Borsa P , Arlyza I S , Barber P H
Published: November 2019

The present paper reviews the phylogeography of an emblematic Indo-West Pacific stingray and aims at linking its taxonomic implications with conservation management. The blue spotted maskray was once understoodto be a single species widely distributed in the Indo-West Pacific, from the Red Sea to Fiji and from southern Japan to New South Wales. Genetics have shown that it actually consists of a number of distinct lineages with parapatric distribution. Phylogenetic data suggest an evolutionary origin of this species complex in the southwestern Pacific in the Miocene. The blue-spotted maskray progressively colonized the Indo-West Pacific from the East to the West. The lineages in the western Coral Triangle and the Indian Ocean are the most recent. Against this updated taxonomic and phylogeographic background, there remains a need for research on the population dynamics and fisheries management of this increasingly threatened species complex.This paper is dedicated to the memory of Dr Irma S. Arlyza.
The density and distribution of Lingula sp. in Aceh Northern Shore
Authors: Agustina S , Octavina C , Sarong A , Nurhaliza A , Dewiyanti I , Iqbal T H
Published: November 2019

The information of the density and distribution pattern of Lingulasp. in Aceh Shore is infrequently recorded. Since Lingulasp. has important roles in ecosystem, the study of species density of Lingulasp.and its distribution pattern was conducted in two sites of Aceh northern shore which were UjongPancu Beach and Syiah Kuala Beach. The aim of this study was to figure out the density and distribution pattern of Lingulasp. Sampling was carried out by designing nine 1,0m x 1,0m plots at each station during April – May 2018. Results of study revealed that Lingulasp. at UjongPancu Beach is less denser than at Syiah Kuala Beach. The density range of Lingulasp.at UjongPancu Beach was 1.56 ind/m2- 2.89 ind/m2 while the density of Lingula sp. at the Syiah Kuala Beach was 3.78 ind/m2-5.44ind/m2. The distribution pattern of Lingulasp. at both stations was found as uniform distribution.
Carbon dioxide (CO2) emissions on highland peatland that has been planted with coffee in Humbang Hasundutan Regency, North Sumatra Province
Authors: Tohir A , Sumono S , Mukhlis M
Published: November 2019

Peatlands in Indonesia are estimated at 26 millions ha. These peatlands are spread across Sumatra on of 8.9 million ha areas. Humbang Hasundutan is one of the area that spread peatlands in North Sumatra with an estimated area of around 1,042 hectares spread in Lintong Nihuta District, Pollung District and Dolok Sanggul District. Peat in this area is unique and rare because the general peat is founded in lowlands adjacent to the coast, but peat in Humbang Hasundutan area is a highland (topogenous) peat which lies at altitude 1000-1450 meters above sea level. The purpose of this study was to determined the amount of CO2 emissions on peatlands cultivated with coffee in Dolok Sanggul District, Humbang Hasundutan Regency. This study was conducted in Huta Bagasan Village, Dolok Sanggul District, Humbang Hasundutan Regency. This research method is a survey research of the amount of CO2 emissions on highland peatlands that are cultivated with coffee. CO2 sampling using a closed hood method. The sampling point is determined 75 cm from the plant. The sampling was taken 3 times a day, namely at 07.00 WIB, 12.00 WIB and 17.00 WIB. Based on the research was known that the highest CO2 emissions were found during the day at 8.12 mg/m2/day, followed by the afternoon at 7.67 mg/m2/day, and the lowest in the morning at 4.21 mg/m2/day.
Effect of different bait on the catchment of eels Anguilla marmorata in the Brayeun River, Aceh Besar district, Indonesia
Authors: Fachrurrazi T , Miswar E , Mustaqim M , Nur F M , Batubara A S , Muchlisin Z A
Published: November 2019

The objective of the present study was to determine the best bait to catch the eel Anguilla marmorata in the Brayeun River, Aceh Besar District, Indonesia. Five types of baits were tested, namely; shrimps, earthworms, chicken intestine, terrestrial snails, and tilapia fish fingerling. The fishing was conducted for three months based on the Islamic Hijri Calendar (lunar cycle) on Rajab to Ramadhan (April to June 2017). The data were subjective to one-way analysis of variance (one-way ANOVA). A total of 39 eels A. marmorata were sampled during the study. The ANOVA test showed that the baits gave a significant effect on the catch volume of eel where the shrimp bait resulted in higher catching compared to other baits. Therefore, it is concluded that the shrimp was the best bait for eel A. marmorata in the Brayeun River, Aceh Besar District, Indonesia.
Wind driven circulation in Makassar Strait during monsoon 2017
Authors: Ikhwan M , Haditiar Y , Wafdan R , Setiawan I , Marwan  , Muchlisin Z A , Rizal S
Published: November 2019

The Makassar Strait (MS) connects the Pacific Ocean and Indonesia Waters via the Indonesia throughflow system. The flow varies because MS is also influenced by the monsoon. To determine the monsoon effect, we applied the two-dimensional numerical model with 6 hourly wind data. It was used to predict the MS current circulation during February, April, August, and October. According to recent studies, the results showed a good verification. The currents in the MS were dominated from the north of MS. The currents moved to the south of MS but sometimes deflected to the north. The currents were stronger during August and weaker during February. In August, the current from the north of MS moved to the south of MS, and it was partly deflected toward the north around Sulawesi Island. There was also the current from the south of MS directed toward the north. While in February, the current around Kalimantan Island was always to the south of MS. Based on the results, the MS currents were dominated by the currents from the north of MS or the Pacific Ocean.
Thermocline studies using CMEMS data in the Andaman Sea during October 2017
Authors: Irmasyithah N , Haditiar Y , Ikhwan M , Wafdan R , Setiawan I , Rizal S
Published: November 2019

The thermocline is a sea layer with a change in temperature to depth quite quickly. We had to study this layer because it had an important contribution to thermohaline flows, upwelling, and fish migration. This paper aimed to map the vertical profiles of temperatures and thermocline gradients in the Andaman waters during the transitional season, October 2017. Analysis of the thermocline layer was based on vertical temperature data from the CMEMS model which were verified with SST from Aqua MODIS 4 km. The thermocline layer was indicated by ΔT / Δz ≥ 0.1 °C and started from the depth of 40 m. CMEMS SST verification on October 2017 showed good results (MAPE = 0.0188, r = 0.68). The thermocline layer was found thicker off the west coast of Sumatra, the Indian Ocean (Station 1) than in the Andaman Sea. Generally, the thermocline layer was at a depth of 66 -131 meters on October 2017. The thermocline gradients were 0.12 - 0.23. These results indicated that in the transitional season, the thermocline location in the Andaman Sea was shallower or less than 200 m.
The relationship between monsoon and sea surface temperature in the western part of Aceh Waters, Indonesia
Authors: Imanullah I , Sofyan S , Sugianto S , Haditiar Y , Rizal S
Published: November 2019

The western part of Aceh waters is part of the eastern Indian Ocean. This waters is a dynamic region where there is differences in sea surface temperature (SST) and significant chlorophyll a concentrations between the southwest (SW) monsoon (June-September) and the northeast (NE) monsoon (December-February). Analysis of SST and chlorophyll-a concentration were used to determine upwelling events in the region. We found that SST in the NE monsoon is lower than that of in the SW monsoon.
Exposing women oyster seekers to estuary water over the pap smear in Krueng Tibang river, Alue Naga, Banda Aceh
Authors: Irnawati I , Manaf S A , Suhartono E , Rusyana A , Idroes R
Published: November 2019

In Aceh, oyster hunting is mostly carried out by women, by sitting or squatting inside the estuary water. The job is carried out every day for many years, with an average duration of two until three hours/day. During this activity, the female genital organ is an open cavity which is an entry point of substances into the body. The residential drainage channels in Banda Aceh City, consists of Alue Naga and Krueng Tibang Rivers Furthermore, the water quality of the Krueng Cut river is in class III, and it contains coliform bacteria, fecal coliform, and streptococcus fecal bacteria. However, the oysters extracted contain lead, cadmium, and zinc, which are above the safety level. The purpose of this study was to determine the effect of age, and duration of work using vaginal douches on pap smear result test in woman oyster seekers. The research subjects comprised of 60 respondents, which was obtained by purposive random sampling. The result showed that 75% of the respondents in abnormal category (PAP II), had pap smear results. A total of 39 respondents (65%) were in the reproductive age, with 35 (58.3%) of them having worked for more than five years, while 25 (41.7%) did not utilize the vaginal douching after work. Furthermore, it influences the age of Pap smear results (p-value=0.00), the length of work affecting the pap smear result test (p-value=0.00), and the vaginal douching that influences the pap smear results (p-value=0.001). Logistic regression analysis showed that the most influential variable on Pap smear results was the length of work (p-value=0.005) and vaginal douching utilized (p-value=0.002), with its results not affecting by age.
Strategies development of lift net fishing equipment in Krueng Raya, Aceh Besar
Authors: Amir F , Miswar E , Chaliluddin  , Iqbal T H , Rianjuanda D , Aprilla R M , Rahmah A
Published: November 2019

The crucial thing in lift net is fishing equipments such as lamps, generator and roller as supporting the fishing operations activities. The less function of that fishing equipments can be affect to the caught. The development of fishing equipment in lift net is important to increase the production of caught. This study aim to find out the development strategies of lift net fishing equiment in Krueng Raya. The strategies development of fishing equipment will be analyzed by using analytic hierarchy process (AHP) based on interviewed with respondents, they are fisherman, panglima laot, and Department of Marine and Fisheries of Aceh. The result showed that the strategy development of fishing equipment in lift net in Krueng Raya is prioritized to modernizing of fishing equipment (0,579) with total consistency ratio 0,04.
Fishing equipment identification of lift net in Leupung, Aceh Besar
Authors: Amir F , Miswar E , Chaliluddin  , Rianjuanda D , Iqbal T H , Aprilla R M , Rahmah A
Published: November 2019

Lift net is one of the important fisheries sectors that become the source of coastal comunity livelihood in Leupung, Aceh Besar. As a fishing gear, lift net needs some fishing equipments such as lamps, generator and roller to supporting the activities of fishing operations. The lack of data and informations on the characteristics of fishing equipment become an obstacle to improve the development of lift net. This study aims to identify fishing equipment used in lift nets in Leupung. The data were collected by interviewed and directed field observation, and then would be analized by using descriptive analisis. The results showed that the lift-nets used neon and mercury lamps, the generator capacity is 15000 watts and roller have length about 3.90 m, diameter 10.19 cm and made of bayur wood (Pterospermum javanicum). The results also showed that the development of fishing equipment in lift nets at Leupung have to improve, so the operation could be more affective.
Diversity, evenness and dominance index reef fish in Krueng Raya Water, Aceh Besar
Authors: Ulfah M , Fajri S N , Nasir M , Hamsah K , Purnawan S
Published: November 2019

Coral reef ecosystem is considered as a very complex ecosystem and a habitat for marine biota, included reef fish community. The purpose of this study is to obtain the value of diversity, evenness and dominance index of reef fish in Krueng Raya Waters (KRW). This research was conducted annually during 2014, 2015, 2016 using the UVS (underwater Visual Census) method. The diversity index of reef l fish in the KRW is categorized as stable (1 <H '<3), yet it was decreased from 2.6 in 2014 to 2.1 in 2016. the value of uniformity index is ranged 0.8 to 0.62 (2014 to 2016) as it categorized as low. Furthermore, the dominance index is also indicated in the low category.
The diversity of marine macroinvertebrates in Aceh Besar waters, Aceh, Indonesia
Authors: Fadli N , Muchlisin Z A , Soraya I , Dewiyanti I , Purnawan S , El-Rahimi S A , Sofyan H , Affan M , Siti-Azizah M N
Published: November 2019

The objective of the present study was to study the diversity of marine macroinvertebrates in coral reef area in Aceh Besar waters. This research was conducted in September 2012 until February 2013in nine locations in the waters of Aceh Besar district, namely: AmatRamanyang, Lampuuk, PulauDituan, LhokKetapang, LhokSeudu 1, LhokSeudu 2, Deudap 1, Deudap 2, and Lamteung. The macroinvertebrates were recorded using three repeated 20 m belt transect in two different depths (2-4 m and 4-8 m) in each site. The result showed 46 species of macroinvertebratesbelonging toseven phyla were recorded. The diversity index in research station ranged between 0.88 - 2.26 (low to medium category).
Analysis of heavy metals in fluvial sediments affected by coal spill waters in Lampuuk Beach, Aceh Province, Indonesia
Authors: Karina S , Suhermi R , Alesyah M , Nurfadillah  , Octavina C , Ulfah M
Published: November 2019

Coal spill in Lampuuk waters in July 2018 had released some heavy metals into the waters in form of dissolved ions. They werethen partially absorbed in the bed and affected the fluvial sediments. The objective of the research was to analyse the heavy metals; Mn, Pb, Cu and Cd content in fluvial sediments affected by coal spill water in Lampuuk, Aceh Province, Indonesia.The fluvial sediments from five stations of Lampuuk beach were collected in December 2018 and analyzed using Atomic Absorption Spectrophotometer (AAS), then resulted that lead (Pb) and manganese (Mn) contained in the samples, ranged from 10.14 to 15.91 and 60.25 to 98.78 mg/Kg, respectively, while copper (Cu) and Cadmium (Cd) were undetected. Based on the regulation of ANZECC (2000), lead content in the sediment was still under the threshold, but manganese was exceeded the threshold.
Potential of tofu wastewater as a medium in Cyanobacteria Nostocmuscorum culture for its biomass and lipid production
Authors: Rusydi R , Yakupitiyage A
Published: November 2019

Biodiesel development has reached exploring the potential of microorganisms as its feedstock. The newest one of its potential feedstocks is Cyanobacteria which have good growth in limited condition and lipid production. Nostocmuscorumis one of Cyanobacteria species with its multicellular and filamentous cells. However, expensive medium for culturing Nostocmuscorum becomes a major difficulty for its production. This study was conducted to evaluate the potential of tofu wastewater as a medium in Nostocmuscorum culture for its biomass and lipid production. The advantages of this study are to find alternative nutrients resource and to minimize the pollution in the water. The experimental laboratory was used as a method of this study and the data was analyzed by CRD, CRD-Factorial and descriptive analysis. Tofu wastewater used during the study was consisted of soybean immersion waste, soybean washing waste and whey at a ratio 1:2:0.5. The results showed that Nostocmuscorumcould grow well in dilution of tofu waste water 40%. Addition of small amount of nitrate 128.94 mg/L and phosphate 23.63mg/L could support the good growth of this species. Its high lipid productivity was achieved at day 7thwhereas 5.07±0.55 mg/g in tofu wastewater 40% and 6.65±0.16 mg/g in tofu wastewater 40% with nutrients addition. It can be concluded that tofu wastewater has a potential as a culture medium of Nostocmuscorum.
The gonad maturity and fecundity of toman fish (Channami cropeltus) during rainyseason to dry season periode in Rawa Danau Panggang waters, Hulu Sungai Utara Regency, South Kalimantan, Indonesia
Authors: Ansyari P , Slamat S
Published: November 2019

This study objectives to evaluation the level of gonad maturity and fecundity of toman fish living in the habitat of swamp waters Danau Panggang, Hulu Sungai Utara Regency, South Kalimantan during the transition season period (rainy to dry season). Fish sampling were carried out every month for six month from April to September 2018. The determining method of the sampling location used an analytical survey method. The result showed the ratio sex male : female = 55.8% : 44.2%, the weight range of 0.18 to 32.2 gram and the level gonad maturity varied form Gonad Maturity Level (GMI) I – IV, increase from rain season to dry season. The opportunity for have mature gonads base on weight is more than 1.90 kg. Fecundity result obtained 5.24% (rain season) to 60.35% (dry season). This data shows that toman fish can spawn throughout the year with peaks in the dry season.
Length-weight relationship of Metapenaeus ensis in Aceh utara waters, lhokseumawe city, Indonesia
Authors: Muhammadar A A , Sarong M A , Ulfa M , Putra D F , Zulfahmi Z
Published: November 2019

Eastern coast Aceh province has a rich of diversity in the marine crustacean sector. One of them is Metapenaeus ensis shrimp. Metapenaeus ensis shrimp is one of the shrimp that has important economic value in the waters of Lhokseumawe city, Indonesia. Excessive use of fishery resources can threaten the preservation of these Shrimp Metapenaeus ensis resources. Therefore, the purpose of this study was to determine the lenght-weight relationship of shrimp caught in the waters of Lhokseumawe city. This research is expected to be able to add information on the existence of Metapenaeus ensis shrimp and sustainable resource management later for farmers. The research method used is a simple random withdrawal method by taking shrimp samples randomly from a basket of fishermen's catch in one sail. Shrimp samples taken 10% of the total catch of fishermen then measured length and weighed. Sampling was carried out in July 2019 at TPI Pusong Lama, Lhokseumawe City. Carapace length and weight of shrimps both male and female ranging from 22 mm to 64 mm and weighing around 2.69 grams to 35.48 grams. Growth patterns of Shrimp Metapenaeus ensis both male and female are allometric negative. Comparison of male and female genital ratio obtained 1: 0.41.
The business study of shark fishing with bottom longline in Kutaraja Fishing Port of Banda Aceh, Indonesia
Authors: Chaliluddin M A , Rianjuanda D , Aprilla R M , Afriani L , Fachruddin R
Published: November 2019

Kutaraja Fishing Port is the largest fishing port in Aceh Province located in Lampulo, Banda Aceh. Shark fishing in Aceh is very beneficial for fishermen from the economic aspect. There are four fishing shark fleets that actively land their catches at Kutaraja Fishing Port, the fishing gear used is bottom longline with 5 and 6 GT vessels. The study was conducted from November to December 2017 which aims to determine the feasibility of catching shark business with bottom longline fishing gear at Kutaraja Fishing Port. The results of the business feasibility analysis on the four vessels operating in Kutaraja Fishing Port, Monek II with NPV value of US$ 13,534.95 (US$=IDR 13000) IRR of 25.39%, and net B/C ratio of 2.07, Rizki the NPV value was US$ 5,532.42, IRR is 15.35% and net B/C ratio is 1.45, Monek I the NPV value is US$ 10,290.80, IRR is 17.59% and B/C ratio is 2.10, and Bungber's 02 NPV value amounting to US$ 11,104.21, IRR of 30.36% and net B/C ratio of 2.31. Discount factor used is 4.75%. Based on the calculation of NPV, net B/C ratio, and IRR, the business of catching sharks with bottom longlines in Kutaraja Fishing Port is profitable and deserves to be continued.
Numerical simulation of M2 tide in the Makassar Strait
Authors: Mahfud J , Haditiar Y , Ikhwan M , Wafdan R , Setiawan I , Rizal S
Published: November 2019

Because of the ITF system, Makassar Strait (MS) has an important role in the Indian Ocean and Indonesia seas. Tides, current, heat, and freshwater from the Pacific Ocean transferred to that ocean through the MS. By using a two-dimensional numerical model, this paper aims to observe the M2 patterns and their effect on the current circulation. For model validity, we compared the M2 tides with the assimilation data obtained from Geospatial Indonesian Agency (BIG tides). The model of amplitude and phases of Makassar Strait show good results. Amplitude is high in the southern bay of Kalimantan and the northeast of MS. The low amplitude can be seen at the south of MS. The phases are denser in the south of MS than in the center and north of MS. The M2 current circulation always moves to the south of MS during M2 periods (t=T/4, t=T/2, t=3T/4, and t=T). The currents are strong around Sulawesi Island. The results show that M2 has a great contribute to MS circulation and the ITF.
Effects of the addition of activated charcoal in feed on the morphology of intestinal villi of Giant Travelly juveniles (Caranx ignobilis)
Authors: Muhammadar A A , Muchlisin Z A , Firdus F , Aliza D , Aminah R S , Putra D F , Asmawati M S , Satria S , Boyhaqi B , Razi K , Ramlan R
Published: November 2019

This study aims to determine the effect of administration of different concentration of activated charcoal in feed on the morphology of intestinal villi ofGiant Travellyjuveniles (Caranx ignobilis). This research was conducted in February to March 2018 which took place at the Brackishwater Aquaculture Center (BPBAP) in Ujong Batee, Aceh, and a histology laboratory at the Faculty of Veterinary, Syiah Kuala University. The method used in this study was an experimental method using a completely randomized design (CRD) with five treatments and four replications. The treatment with different concentrations of active charcoal was treatment A (0%), B (1%), C (2%), D (3%), and E (4%). Results of the study found that treatment C showed the significant difference with other treatments (p <0.05) by morphological values of height (123.6 μm), basal width (63.8 μm), and apical width (42 μm), respectively. Thus it can be concluded that the addition of activated charcoal in feed at 2% can improve the absorption of nutrition in the intestine.