bluuebunny/crossref_metadata_2025_split huggingface dataset:
Composition of marine litter from fishing activities: a preliminary study at the fish landing base of Pantai Labu North Sumatera
Authors: Muhammad M , Ningsih R A , Zulfahmi I 
Published: August 2023

Abstract
Pantai Labu Fish Landing Base (PPI) is a type D fishing port that’s located in Paluh Sibaji Village, Pantai Labu District, Deli Serdang Regency. The existence of garbage in the sea is important to know because the generation of garbage in the sea can have a negative effect in several sectors, one of which is in carrying out fishing activities. The purpose of this study was to determine the composition of marine litter from fishing activities by fishing units at Pantai Labu Fish Landing Base. This research was conducted in January 2022 in Paluh Sibaji Village, Pantai Labu District, North Sumatra. Data collection method used purposive sampling. The results showed that the composition of inorganic waste generated from fishing activities consisted of plastic, metal, paper and cardboard. Types of waste made from plastic materials consist of plastic bags, food wrappers, plastic bottles, bottle caps, plastic cups, cigarette packs, foamed plastic, and monofilament fishing line.
Enhancing brackish water tilapia seed production with biofloc technology
Authors: Amalia I R , Permana D , Sari R I , Arifin Z , Nur A 
Published: August 2023

Abstract
Aim of this study was to observe the effect of biofloc technology application to enhance brackish water tilapia production. This research was conducted by using two different stocking densities at 3000 seeds.m-3 (D-3000) and 6000 seeds.m-3 (D-6000). It was performed on concrete tanks of 5.5 x 1.8 x 0.8 m in dimension (active volume 5 m3) located under semi-indoor building. Biofloc formation were stimulated by adding molasses as carbon source by adjusting C:N ratio to around 10:1. The water salinity increased gradually after 8th day and reached up to 15 ppt during harvest. The result showed that brackish water tilapia seed survival rate of D-3000 and D-6000 was in range 77-79 %, biomass were 0.60 - 0.85 kg.m−3, and seed uniformity was 77-82%. Biofloc or floc volume of D-3000 was higher than D-6000 at 10 ml.l−1 and 3 ml.l−1 respectively. At the beginning, microalgae population was dominated by Bacillariophyceae while Chlorophyceae dominated at the end of rearing periods, and Rotifer density around 64-191 ind.ml−1. Total bacteria observed was in range of 3x103-14x104 cfu.ml−1. For both treatment nitrite (N-NO2) was 0.000-0.029 ppm, nitrate (N-NO3) was 0.000-0.445 ppm or less than 0.5 ppm, dissolved oxygen (DO) range was in optimal conditions (5.8-6.2 ppm) for tilapia rearing.
An inventory of gastropod species in the mangrove ecosystems of Nusa Lembongan, Bali
Authors: Galgani G A , Ernawati N M , Dewi A P W K 
Published: August 2023

Abstract
Research of the inventory of gastropods in the mangrove ecosystem of Nusa Lembongan was carried out from July to August 2022. This descriptive research aims to determine the species and diversity of gastropods. The study was conducted using the quadrant transect method at 54 points, 9 points each in six vegetation zone. The results showed that there were 20 species of gastropods from 7 families. The families found were Ellobiidae, Potamididae, Cerithiidae, Littorinidae, Columbellidae, Neritidae, and Mitridae. The abundance of gastropods found in the study area ranged from 1 - 241 ind/9m2, with the highest abundance being Clypeomorus pellucida and the lowest abundance being Nerita savieana and N. undata. Gastropod diversity index in the Nusa Lembongan mangrove ecosystem ranges from 0.4 - 1.6 which is a moderate range.
Estimation of the sustainable potential of scads fish (Decapterus sp.) landed at the Pusong Fish Landing Base, Lhokseumawe
Authors: Aprilla R M , Umraiti K S , Agustina I , Rahmah A , Rizqi R , Salmarika S 
Published: August 2023

Abstract
Scad (Decapterus sp.) is one of the small pelagic resources that play a big role in the fishermen’s economic sector in PPI Pusong, Lhokseumawe. Based on time series data within a period of 5 years (2016-2020) scad production tends to fluctuate every year, while the scad fishing grounds are farther than the previous 5 years, namely 4-20 miles to 80-200 miles. This is one of the indications of the disruption of fish resources. Therefore, it is necessary to conduct research on the analysis of sustainable potential (MSY), and the utilization rate of scad landed at the PPI Pusong. This research was conducted in March-April 2022. The data used in this study used primary and secondary data with a sample number of 25 purse seine. Based on the results of data analysis, an MSY value of 1,482 tons/year was obtained, with optimum efforts (Fopt) of 1,930 trips/year and the number of catches allowed (TAC) of 80% MSY of 1,186 tons/year. While the average utilization rate is 70.95%, which is in the optimum level category. However, the precautionary approach to the use of scad must still be controlled in its fishing, so that scad resources remain sustainable.
Assessment of Target Strength Value of Demersal Fish in Lancang Waters Using Simrad Single Beam Echosounder
Authors: Purnawan S , Elson L , Manik H M 
Published: August 2023

Abstract
Hydroacoustic technology is excellent at determining accurately and in near real-time the objects located near the seabed. Therefore, acoustic technology is widely recognized for fisheries resources mapping, including demersal fish. The objective of this study was to estimate the value of demersal fish target strength (TS) in the waters of Lancang Island, Kepulauan Seribu region. A Single Beam Echosounder Simrad EK-15 with a frequency of 200 kHz was employed for data collecting in the waters around Lancang Island. The integration layer width was set at 3 meters with a horizontal integration distance of 200 meters. The average target strength (TSc) values obtained from the integration cell ranged from -55.52 dB to -42 dB with an average of -50.30 dB. Furthermore, the seabed depth influenced the distribution of TSc values, with higher TSc values in deeper habitat locations.
Identification and Morphometric Analysis of Octopus (Cephalopods) from Coastal Area Gugop Pulo Breuh, Aceh Besar
Authors: Ramadhaniaty M , Octavina C , Purnawan S , Sari I P , Uwais T A , Qalby P D 
Published: August 2023

AbstractOctopus is a commodity that has important economic value and high export value. Gugop Distric is one of the producers of octopus in the form of fresh products and processed products developed by Kube Mangat. It is said that the octopus species in Indonesia are dominated byOctopus cyanea, but there is no scientific certainty for the type of octopus in this Gugop village. This study aimed to identify morphometric analysis is for octopus. This research conducted in May-July 2022. Information on octopus resources in Aceh is still limited. Information about octopus biology needs to be known as basic information in octopus resource management. A total of 35 octopus samples were obtained, there are 5 key characteristics inOctopus cyaneaincluding ocellus, bluish-white spots, brown markings all over the body, diamond-shaped papillae on the neck and head. The presence of false eye spots indicating that this species isOctopus cyanea. The size trend based on the total length of the octopus showed 6 classes with the highest total in the 68-72 cm category, namely 9 individuals. These results indicate that the octopus caught is still in a suitable size for capture feasibility and has entered the reproductive period.
Effect of fermented ginger (Zingiber officinale) on The Blood Profile of Tilapia (Oreochromis niloticus)
Authors: Afriani S , Putra D F , Mursalin  
Published: August 2023

Abstract
This study aims to determine the effect of adding fermented ginger (Zingiber officinale) in feed to the blood profile of tilapia (Oreochromis niloticus). This study used a completely randomized design method with 4 treatments and each treatment had 4 replications. Treatment A was a control treatment (without the addition of fermented ginger), treatment B with the addition of fermented ginger 5 mL/100 g of feed, treatment C with the addition of fermented ginger 7.5 mL/100 g of feed, and treatment D with the addition of fermented ginger 10 mL/ 100 g of feed. The results of Analysis of Variance (ANOVA) showed that the addition of fermented ginger to feed had a significant effect (P<0.05) on total value of erythrocytes, haematocrit and but did not significantly affect (P>0.05) on the total value of haemoglobin, lymphocytes, monocytes and granulocytes. Total values of erythrocytes in each treatment were significantly different and the highest total erythrocyte value was found in treatment C (1.70×106 cells/mm3).
Study of trophic interactions of green mussels (Perna viridis) as bioremediation of waste for cultivation of windu shrimp (Penaeus monodon) in Gampong Alue Naga, Banda Aceh: application of IMTA system (Integrated Multi-Trophic Aquaculture)
Authors: Nurfadillah N , Rusydi I , Hasfiandi H 
Published: August 2023

AbstractResidual organic matter from the cultivation of Windu Shrimp (Penaeus monodon) can cause a decrease in the quality of cultured water. This study aims to examine the trophic interactions of Windu Shrimp (Penaeus monodon) and Green mussels (Perna viridis) in a polyculture system including observing growth performance, survival rate and bioremediation level of green mussels. This research was conducted in April – September 2022 in Gampong Alue Naga, Banda Aceh. Sample biota was Windu Shrimp (Penaeus monodon) (PL20) with an average length of 1.2 cm, and green mussels (Perna viridis) obtained from nature with a shell size range of 3 cm – 5 cm. Research on species composition per container volume in a polyculture system used a completely randomized design method with 4 treatment levels and 3 replications. The treatments in this study were differences in stocking density of green mussels A (0 ind/m2), B (20 ind/m2), C (40 ind/m2), and D (60 ind/m2). In this study, the number of windu stocked was the same, namely 60 fish/container with a container size of 1x1 meter. The results showed that the difference in stocking density of green mussels had a significant effect (p<0.05) on absolute growth and survival rate of Windu shrimp but had no significant effect on absolute weight and daily growth rate of Windu shrimp (p>0.05). The average daily growth rate (SGR) ranges from 10.54% - 11.98%. The lowest survival rate value was found in treatment B, which was 26.11±10.04 and the highest survival rate value is found in treatment C of 73.33±26.6. The best treatment in this study was the stocking density of green mussels of 40 ind/m2. Green mussel filtration rate ranged from 0.6 to 1.7 L/day. Application of multispecies cultivation system (polyculture) is better than monoculture system based on growth performance and filtration rate of green mussels (Perna viridis).
Morphometric study of blood cockle (Anadara granosa) in Kendari Bay, Southeast Sulawesi
Authors: Bahtiar  , Fekri L , Ishak E , Permatahati Y I , Nur I 
Published: August 2023

Abstract
The cockle immerses in the substrate of the intertidal zone. Their conditions and growth factors are highly dependent on nutrients around the waters of Kendari Bay. Therefore, this study aims to determine the relationship between length, weight, and condition factors. The study was conducted in March 2016 to February 2017 at the intertidal zone of Kendari Bay. The samples were collected with a shovel in a 1x1 m square transect monthly. Furthermore, the length and weight of the shells were measured using a calliper and a digital scale with an accuracy of 0.5 cm and 0.001g, respectively. The cockle was oven-dried for 48 hours. Simple linear regression was used to analyze the relationship between length and weight, while the condition factors were examined using the Mann-Whitney test. The results showed that male and female cockle shells had b values in the negative allometric and isometric categories, which spread from the respective ranges of 2.31-3.06 and 2.21-3.23. The b values for males and females increased in March-September and then decreased in October-February. Meanwhile, the condition factors of male and female mussels based on size and time of observation were not significantly different and ranged from 3.24±1.33-7.07±0.43 and 2.94±0.54-6.63±1.09. The highest condition index was discovered in October, March, and August, respectively, while the lowest occurred in June and September.
Identification of marine debris from fishery activities in Nipah and Alue Riyeung beaches, Nasi island, Northern Aceh waters
Authors: Silitonga N A , Agustina S , Karina S 
Published: August 2023

Abstract
It is believed that the debris discovered in the ocean originated on land and was unintentionally and purposely transported by a river. Marine debris will accumulate on the water’s surface and sink to the bottom over time, polluting the seawater if left mismanaged. The life of marine organism will be threatened by the existence of the debris. The purpose of this study is to quantify the quantity of macro-sized marine debris generated by fishing activities. This study was carried out on Nasi Island in Aceh Besar from February to April 2022. Sampling of marine debris was carried out using the shoreline method with a 100 meter long transect. Marine debris from fishing activities identified includes types of plastic, plastic foam, cloth and wood, with a total of 179 items.
Growth performance and biomass aquatic plants of Hydrilla verticillata in floating net cages and non-floating net cages in Laut Tawar Lake
Authors: Hasri I , Harahap P D 
Published: August 2023

Abstract
Aquatic plants of Hydrilla verticillata have a role as a provider of natural food for the aquatic biota of Laut Tawar Lake. This study aimed to analyze the biomass growth of submerged aquatic plant of Hydrilla verticillata found in the KJA and non-KJA areas in Laut Tawar lake. The research was conducted from January to April 2022 in Laut Tawar Lake, Central Aceh Regency. The method used in determining the station of this research is purposive sampling. Data collection on aquatic plant growth was carried out at 2 observation stations using the quadratic transect method measuring 1 x 1 m. The results showed that the growth of the aquatic plant Hydrilla verticilata in Laut Tawar Lake was at a KJA station of 0.72 cm compared to a non-KJA 0.59 which was significantly different (p>0.05). The biomass of aquatic plant of Hydrilla verticilata measured was dry biomass with a value of 574 g/m2 at the KJA station while at the KJA station it was 203 g/m2. The density of water plants Hydrilla verticilata at KJA stations is 270 ind/m2 while at non-KJA stations is 173 ind/m2. It can be concluded that the growth of aquatic plants Hydrilla verticillata is greater than that of non-KJA stations.
Relationship of mangrove snail’s abundance (Cerithidea sp.) with mangrove density at mangrove ecosystem in Banda Aceh and Aceh Besar
Authors: Farahisah H , Azizah N , Dewiyanti I , Yulvizar C 
Published: August 2023

Abstract
Mangrove snails are aquatic biota that inhabit in the mangrove ecosystem, they lives attached to mangrove trees or scattered on the substrate surface. The purposes of this study were to identify the species, distribution pattern, the abundance of mangrove snails (Cerithidea sp.) and their correlation with mangrove density, water and soil characteristics in mangrove ecosystem, Banda Aceh and Aceh Besar. The research sampling was started in April to May 2022. The samples were collected from 5 stations, and purposive sampling method was applied in order to select the sampling station. The results discovered that the species of Cerithidea was Cerithidea cingulate, and the highest abundance was 18 individuals/m2 (station 1). Moreover, the lowest abundance was at station 5 as many as 10 individuals/m2, and other stations showed the abundance of C. cingulata was 15.67 individuals/m2 (station 2), 14.67 individuals/m2 (station 4), and 13 individuals/m2 (station 3) respectively, with a uniform distribution pattern at each station. There was no significantly correlation between mangrove density and the abundance of mangrove snails as well as the relationship between the abundance of mangrove snails with the characteristics of water and soil where PSig. > 0.05.
Cherax quadricarinatus: Identifying potentially invasive species in Lake Laut Tawar through their bio-population aspects
Authors: Damora A , Simatupang A H , Hasri I , Andriyono S , N Fadli  
Published: August 2023

Abstract

Cherax quadricarinatus is an introduced species that is deliberately stocked in Lake Laut Tawar, Takengon, Indonesia. This study aims to analyze bio-population aspect of this species, including length frequency distribution, length-weight relationship, condition factors, and biology reproductive. A total of 361 individual was sampled bi-weekly from October to December 2021 in Lake Laut Tawar, Central Aceh, Indonesia. The carapace length of the crayfish ranged from 26.5 to 69.9 mm CL, with the length class mode being 41.69 mm CL. The growth pattern of freshwater crayfish is negative allometric (b<3) as described as an equation W = 0.0002CL29522 (R2 = 0.907). The sex ratio of C. quadricarinatus between male and female was in balance ratio (1:1) (Chi-square test result). The length of maturity (L
50) in male was 49.49 mm CL, while in female was 47.41 mm CL. The highest gonad somatic index (GSI) was in December at 1.02, while the lowest was in November at 0.79. Fecundity of female ranged from 267 to 970 eggs.
Cellulose-g-poly (acrylic acid) interpenetrated by fulvic acid for potential Cu (II) removal from wastewater
Authors: Rahmawati R , Ekawati S , Yunus A L , Roja’i A M , Suhartini M 
Published: August 2023

Abstract
The cellulose-g-poly (acrylic acid) copolymer preparation in the presence of fulvic acid as an interpenetrating agent (C-g-PAA/FA) has been successfully conducted using gamma radiation. The acrylic acid was utilized as a functional monomer and N, N’-methylene bisacrylamide was used as a crosslinking agent. The fulvic acid addition to C-g-PAA was intended to enhance the number of functional groups responsible for the chelating agent. The infrared spectra of the obtained copolymer verified the incorporation of fulvic acid and acrylic acid in the cellulose network structure by the appearance of phenyl vibration and changes in the carbonyl vibration at 1560 and 1725 cm−1, respectively. Moreover, the thermogravimetric analysis showed that the C-g-PAA/FA increased the thermal resistance of the cellulose structure, which could be explained by the formation of robust and more chemical bonds that contributed to the network structure. Scanning electron microscope images revealed that the C-g-PAA/FA possesses a more compact and stronger network structure compared to pristine cellulose. Energy-dispersive X-ray analysis confirmed the presence of copper ions on the surface of C-g-PAA/FA after Cu (II) removal. In addition, the C-g-PAA/FA has effectively been used as Cu (II) removal in the aqueous solution, with a removal percentage of up to 56 %.
Antioxidant and antibacterial activity test on a crude extract of sand (Holothuria atra) in Lemukutan water, Bengkayang District
Authors: Idiawati N , Indrianti  , Minsas S , Prayitno D I , Irwan I , Siregar S 
Published: August 2023

Abstract
Sea cucumbers are soft-bodied marine invertebrates from the Holothuroidea class whose habitat is in sandy areas. This study aims to determine the content of secondary metabolites in crude extracts of sea cucumber which have the potential as antioxidants and antibacterials. The type of sea cucumber used in this research is the sand sea cucumber (Holothuria atra). The research was carried out from October 2020-February 2021. Samples were taken using the exploratory method, the sea cucumber samples were processed with 5 treatments, namely cleaning and crushing sea cucumber samples, extraction using the maceration method, evaporation with a vacuum rotary evaporator, and drying using freeze-drying. The bioactive components found in sea cucumbers are alkaloids, flavonoids, saponins, and phenols. The antioxidant activity found in sea cucumbers has an IC50 1194 ppm which is classified as a weak antioxidant. The antibacterial activity found intraday sand sea cucumbers E. coli gave the highest inhibition zone at a concentration of 20% with an inhibition zone diameter of 20.08 mm while S. aureus gave the highest inhibition zone at a concentration of 30% with an inhibition zone diameter of 22.17 mm.
Meta-Analysis: The effectiveness of artificial diets to increase on survival rate of vannamei shrimp (Litopenaeus vannamei)
Authors: Akbar S A , Fazli R R 
Published: August 2023

Abstract
The use of artificial diets for shrimp culture has been widely used at this time, but it was not yet known how large the effect of artificial diets on the survival rate of Litopenaeus vannamei. This study aims to determine the effectiveness of artificial diets on on the survival rate of Litopenaeus vannamei by meta-analysis research. The measurement results obtained z-value of 5.336 and p-value of 0.001, this p-value was smaller than the significance value of 5% (0.05). Therefore, at a significant level of 95%Cl the correlation between artificial diets and the survival rate of vannamei shrimp was significant with a minimum confidence limit of 0.192 and a maximum of 0.343. Based on Egger’s test, the z-value which was the magnitude of the regression coefficient is 1.714, while the p-value of 0.086 is greater than 0.05 which indicates that the selection of articles and the results of the study were not indicated by publication bias. In addition, the p-value > 0.05 indicates that the funnel plot was symmetrical. Therefore, the results of this study are very useful theoretically in the development of artificial diets for the survival of vannamei shrimp.
Community structure of periphyton at floating net cages and non-floating net cages in Laut Tawar Lake, Aceh Tengah
Authors: Nurfadillah N , Royanni T , Damayanti A , Desrita  
Published: August 2023

Abstract
Many activities are carried out around the Laut Tawar lake, one of which is the cultivation of floating net cages that can contribute nutrients to the waters. One of the organisms that can take advantage of the abundance of nutrients in the waters is periphyton. This study aims to examine the community structure of periphyton as natural food in Laut Tawar Lake. This research was conducted in January-April 2022. The results showed that there are 9 classes of periphyton at the KJA station, namely Bacillariophyceae, Chlorophyceae, Cyanophyceae, Rhizopoda, Dinophyceae, Euglenophyceae, Trebouxiophyceae, Klebsormidiophyceae and Coscinodiscophyceae. While, at non-KJA stations there are 7 classes where the Klebsormidiophyceae class and the dinophyceae class are not found at non-KJA stations. The highest abundance at the KJA station was on the 7th day with a value of 108,655 cells/cm2 and non-KJA was 24,552 cells/cm2. The lowest abundance occurred on day 14 at both stations. Periphyton diversity index at KJA and non-KJA stations ranged from 1.88-2.76, which was moderate. The evenness index of periphyton species ranging from 0.61-0.75 was classified as high, while the dominance index ranging from 0.09-0.24 was classified as low. Based on the values obtained, the community structure of periphyton on artificial substrates in the KJA and non-KJA areas in Laut Tawar Lake experienced moderate ecological stress with the community in a stable condition. The t-test results obtained that the abundance values at KJA stations and non-KJA stations had the difference that the abundance of periphyton at KJA stations was greater than at non-KJA stations.