bluuebunny/crossref_metadata_2025_split huggingface dataset:
The characteristics of body-wave records between forearc and backarc region at the Sumatra subduction zone from deep regional earthquakes
Authors: Haridhi H A , Sianipar D 
Published: March 2021

AbstractThe Sumatra subduction zones have been known to produce large destructive earthquakes and tsunami, such as the 26 December 2004 M9 earthquake at the western offshore of Aceh. This large destructive earthquake usually occurred at the shallow portion of the subduction zone between 10 – 35 km depth, while the intermediate-to-deep earthquake usually occurred at the greater depth, deeper than 65 km along the subduction, which produces small to moderate earthquake with a magnitude between M3-5. Thus, these deep events along the subduction zone usually being neglected. However, the recent study has shown that an anomalous large ground movement associated with a deep earthquake at the subduction zone has been observed along the forearc region while in the backarc or at its epicenter, it remains low. Hence, the characteristics of the body-wave at these regions are different, which could be utilized for hazard mitigation. For this reason, this study aims to identify the body-wave characteristics between the forearc and backarc regions at the Sumatra subduction zone. Several selected deep regional earthquake records with a depth greater than 100 km provided by the Agency for Meteorology, Climatology, and Geophysics of Indonesia (BMKG) were analyzed. The finding indicates that the body-waves recorded in the forearc region are significantly different, with the main characteristics are; 1. Amplitude: preserve high amplitude, 2. Arrival time: shows a delayed signal of P- and S-waves, and 3. Spectral: conserve energy at low to high frequency and shows as a dispersion. These findings suggest that the signal recorded at the forearc region travel within the subducting slab, and the late arrival of the signal indicates that the seismic waves record at forearc travel at the top of the subducting slab, i.e., the oceanic crust, which is having lower velocity to the surrounding mantle.
The growth pattern of sea cucumber Acaudina sp. from the Delta Wulan, Demak, Central Java, Indonesia
Authors: Widianingsih W , Hartati R , Nuraeni R A T , Endrawati H , Mahendrajaya R T 
Published: March 2021

Abstract
Sea cucumber Acaudina sp. is one of the many benthic organisms found in the Wulan Delta ecosystem, Demak. Acaudina sp. plays an important role in the benthic ecosystem. Therefore, a study on the population of Acaudina sp. is necessary. The purpose of this study was to determine the growth pattern of sea cucumber Acaudina sp. Sea cucumber samples were taken in May, June, and July 2020 during the new moon and full moon phase. Based on the statistical test, it was found that there is no significant different the mean of total weight (gram) between new moon and full moon (t-test two paired; df = 2; t count = -1.481; P=0.05). Likewise, there is no different in the average value of sea cucumber length in the full moon and new moon phases (t-test two paired; df = 2; t count = 0.353; P=0.05). The average of total weight value of Acaudina sp. on full moon had range 15.21–27.5 gram, is lower than on new moon (20.47–32.11 gram).The growth pattern of sea cucumber Acaudina sp. on full moon and new moon are negative allometric.
Economic analysis of vannamei shrimp aquaculture in Aceh Besar Regency based on different land areas
Authors: Wijaya R A , Muliawan I , Hafsaridewi R , Suryawati S H , Pramoda R 
Published: March 2021

Abstract
Aceh Besar District, Aceh Province, is known as one of the producers of shrimp commodities in Indonesia. The shrimp commodities that cultivated is vannamei shrimp (Litopenaeus vannamei). This study aims to conduct an economic analysis of vannamei shrimp farming in Aceh Besar Regency based on various land sizes, namely less than 1 Ha and more than 1 Ha. The research was conducted in 2019 using a survey method. Data collection using interview techniques to 40 shrimp farmers. Descriptive statistical methods and economic analysis were used in this study. The results of the analysis show that most of the respondents have a cultivated land area of less than 1 Ha with a number of plots of 1 to 3 plots. Aquaculture investment is positively related to the land used. The land shrimp pond is the largest asset cost compared to other assets. The biggest operational costs are feed and shrimp seeds. Regarding business revenue, R/C ratio and payback period, vannamei shrimp farming with land less than 1 Ha is relatively better than land more than 1 Ha.
Biological aspects of sharks landed in the Fishing Port of Kutaraja, Banda Aceh, Indonesia
Authors: Rianjuanda D , Melanie K , Chaliluddin M A , Safrinawati S 
Published: March 2021

Abstract
Shark fisheries in Aceh are not supported by the availability of research-based data and information that needed to support the preservation and development of this resource. The purposes of the study were to assess the biological aspects including shark species identify and their status in IUCN, length distribution, sex ratio, and maturity stage of male shark. This study was conducted from August to October 2017 in the Fishing Port of Kutaraja, Banda Aceh. The observation survey of fish landing sites was conducted to collect the catch species composition, total length of each individual, sex, and maturity stage of male genital of shark (clasper). The results showed there are 17 species of sharks caught by some fishing gears (n = 318). Mean total length, fork length, and standard length are 122.90 cm, 110.77 cm, and 86.50 cm, respectively. The sex ratio of dominated species (Carcharhinus sorrah, Sphyrna lewini, and Alopias pelagicus) showed not significantly difference between males and females, based on Chi-square test. The percentage of male shark maturity for each category (NC, NFC, FC) is 52%, 13%, and 35%, respectively. The percentage of the IUCN status (threatened rare, threatened with extinction, and almost threatened) of collected species are 12%, 29%, and 41%, respectively.
Spatial analysis of accretion, abrasion and shoreline change in banda aceh costal area
Authors: Irham M , Suri R , Setiawan I , Fuadi A 
Published: March 2021

Abstract
The coast of Banda Aceh City has a gentle sloping beach morphology, making it prone to changes in coastlines due to hydro-oceanographic dynamics. Areas that are particularly vulnerable are the mangrove areas and around the Krueng Aceh estuary and coastal area of Lampulo. Therefore, to determine the extent of shoreline changes, a spatial analysis of coastal vulnerability was carried out with the aim of knowing how much change had occurred at Lampulo beach in Banda Aceh City of Aceh Province. The research was conducted using Google Earth data technology and the use of Geographic Information System (GIS) software. The analysis was carried out over a period of 14 years starting from 2004 to 2017. Field data verification and georeferencing were also carried out to check the accuracy of mapping and calculations. The results showed that in 2004-2005 there was a large erosion that changed the shape of the coastal profile where the mangrove coastline turned into water without mangroves as a result of the tsunami on December 26, 2004. In 2008-2009, after the construction of the breakwater and the Port of Lampulo there was a large accretion occurred having the impact on the morphology of the coast. The results also concluded that the annual average accretion value was 20.48 ha and the annual abrasion was 19.28 ha. The value of shoreline reduction due to abrasion is around 217.25 ha and accretion of 166.56 ha over a period of 14 years.
The feasibility of a cold storage facility for fish in Aceh during the COVID-19 pandemic
Authors: Fahlevi H , Chan S , Hasibuan P , Fadli N , Edhy Sofyan S , Rianjuanda  , Syukri M , Saidi T , Dawood R 
Published: March 2021

Abstract
The majority of catches by fishermen in Aceh, Indonesia are sold raw, directly to consumers, and in the local market. This contributes to the low price of fish and low income for the fishermen, and the COVID-19 outbreak has made this situation even worse. One solution could be the establishment of a cold storage business in the area. This study assessed the financial feasibility of a 200-ton cold storage business in Banda Aceh, the capital of Aceh province. Using secondary data collected from online sources, we applied the most common financial indicators used in feasibility studies, namely Net Present Value (NPV), Internal Rate of Return (IRR), and Benefit-Cost Ratio (BCR). A sensitivity test was also performed to predict the feasibility of the cold storage business if the basic assumptions are changed. We found that cold storage in Banda Aceh is financially feasible as the NPV was positive, the IRR was higher than the interest rate (i.e., the discount rate), and the BCR was higher than 1. Besides, the sensitivity test also suggested that cold storage would still be feasible even if there were a 20% increase or decrease in storage capacity and project costs.
Fisheries management status in the marine protected area of eastern coast of Weh Island, Sabang, Indonesia
Authors: ‘Akla C M N , Suharyanto  , Rachmad B , Firdaus R , Kurnianda V 
Published: March 2021

Abstract
This study aims to determine the status of fisheries management, formulate priority tactical steps for fisheries management in the marine protected area of eastern coast of Weh Island. The types of data sources used in this study are primary data obtained through direct measurements and interviews, and desk study data. Data is processed and analyzed using the Ecosystem Approach to Fisheries Management (EAFM) indicator, and Flag modeling. Determination of priority improvement indicators and priority tactical steps using the Analytical Hierarchy Process (AHP). The assessment of fisheries management status shows that fisheries management in the conservation area of the East Coast of Weh belongs to the good category. Determination of priority indicators on fisheries management and regional suitability is carried out to determine the priority of short-term indicators which are then needed to determine the priority of tactical steps in fisheries management and regional suitability for marine tourism.
Length-weight relationships of five ornamental fish species harvested from a tributary of Bira Cot River, Indonesia
Authors: Nur F M , Batubara A S , Perdana A W , Damora A , Fadli N , Rizal S , Nugroho R A , Muchlisin Z A 
Published: March 2021

Abstract
Aceh Besar, Indonesia has a big potency on fisheries resource, including small fish that have potential as ornamental fish, such as Zebrafish, Checker barb, Rasbora, and Hasselt’s Loach. To date, information on the growth pattern of this species was not available. Hence, the objective of the present study was to examine the growth pattern of five ornamental fish species namely; Danio albolineatus, Puntius oligolepis, P. binotatus, Rasbora sumatrana and Lepidocephalichthys hasselti. The fish sample was collected from Bira Cot River, Aceh Besar District from February to July 2020. In Bira Cot, Aceh Besar District, Indonesia. The study showed that the a and b values of regression parameters ranged between 0.0025-0.0097 and 3.043-3.545, respectively. The growth pattern of P. oligolepis, D. albolineatus and L. hasselti had a positive allometric growth pattern, while P. binotatus and R. sumatrana showed an isometric growth pattern. Based on the condition factors parameter indicated that the condition of the waters of the sampling location is still in good condition and supports the life of fish.
Effect of monsoon on ocean productivity in Aceh waters
Authors: Auliati A , Haditiar Y , Wafdan R , Ikhwan M , Muhammad M , Jalil Z , Chaliluddin M A , Sugianto S , Rizal S 
Published: March 2021

AbstractMonsoon in Aceh waters is dominated by the northeast and southwest monsoons. Based on previous research, the monsoon affects oceanography and general hydrodynamics in Aceh’s waters and its surroundings. This study aimed to see the effect of the monsoon on the abundance of chlorophyll-a in Aceh waters. The data used in this study consisted of wind, sea surface temperature (SST), and chlorophyll-a data obtained from remote sensing observation data. Wind data is obtained from Metop-B ASCAT (Advanced SCATterometer). SST and chlorophyll-a were obtained from Aqua MODIS (Moderate Resolution Imaging Spectroradiometer) level 3 with resolution 4 x 4 km. The results obtained, in February, chlorophyll-a concentrations were higher in the range of 0.7 mg/m3- 1.4 mg/m3, compared to August with lower concentrations ranging from 0.2 mg/m3- 0.5 mg/m3. It is due to low temperatures in February. Seasonal changes affect the productivity content of chlorophyll-a in the waters.
Fermentation of probiotic-enriched commercial feed to improve tilapia (Oreochromis niloticus) growout performance
Authors: Ndobe S , Rosyida E , Palallo Z R 
Published: March 2021

Abstract
The Nile tilapia (Oreochromis niloticus) is a freshwater food fish farmed in many regions around the world, including Indonesia. Feed is often the main input in aquaculture systems; however, feed quality is not always optimal for fish health and growth. Probiotics are microorganisms which can help break down complex compounds and make feed more digestible through fermentation. Benefits can include improved health, survival and faster growth. This research studied the effect of feed enrichment through fermentation with a probiotic (BOSTERR) on O. niloticus grow out performance. The probiotic was added to commercial feed (HI-PRO-VITE 782) with eight fermentation time treatments (A = 0 days = control; B=1 day; C=2 days; D=3 days; E=4 days; F=5 days; G=6 days; H=7days). Experimental fish were 120 O. niloticus fingerlings (total length 4-5 cm; weight 0.90-1.25 g) from Kalawara Hatchery, Sigi District, Central Sulawesi, Indonesia. Five fingerlings were placed in each experimental unit (aerated aquaria, 20 L water) and fed 3 times/day at 5% of bodyweight. Variables measured were growth (length and weight), survival rate (100% under all treatments) and feed conversion ratio (FCR). Water quality was monitored. The best results in terms of growth and FCR were obtained with 2 days of probiotic fermentation treatment.
Study of bivalvia habitat in the mangrove area of Aceh Jaya District, Aceh Province
Authors: Hermi R , Irham M , Rusdi M , Sarong M A 
Published: March 2021

Abstract
One of the biota that utilizes the mangrove ecosystem as its habitat is a group of Bivalvia belonging to the Phylum Mollusca Class Pelecypoda (Bivalvia). Shellfish have relatively high economic and nutritional value, so that the collection of shellfish in Aceh Jaya District continues. The research was conducted to study the biological components, analyze the habitat preferences, and management patterns of shellfish in the mangrove area of Aceh Jaya Regency. The research was conducted by using purposive sampling method, by determining 12 stations in 6 districts. Shellfish samples were taken three times with an interval of 15 days. The results found 5 species of shellfish with a dominance index of 0.002 to 0.255 with a low dominance level. The frequency of the presence of shellfish species is very rare (accidental) to rare (constant). The lowest presence level was Centrocardita rosulenta with a value of 8.33% and the highest was Sinanodonta woodiana with a value of 58.33. Habitat preference Sinanodonta woodiana has a salinity range between 3-7ppt and clay soil texture class, while Geloina habitat preference likes salinity with a range of 12 to 25 ppt with sand, loamy sand and sandy loam soil texture classes.
Identification of fishing ground hotspot of traditional purse seine fisher at northern waters of Aceh – A community-based data collection approach
Authors: Haridhi H A , Rizal S , Nanda M , Muhammad  , Wilson C R 
Published: March 2021

Abstract
Fishing grounds are among the most important key of information kept by the fishermen. Understanding the fishing ground locations are considered important as an evaluation of the fishing effort being reached by the fishermen as well as understanding the pressure being received to the fish stock at the surrounding water. The recent study has shown that a community-based data collection approach was found successful in recording and analyzing the fishing ground locations and its properties. One of the few projects implementing this concept is the Community-Based Bathymetric Survey (CBBS), which was realized by the Body of Rehabilitation and Reconstruction (BRR) Nanggroe Aceh Darussalam (NAD) – Nias with funding from the Asian Development Bank (ADB). As many as 151 GPS-transducer recording devices were installed to the fishermen boats along the coast of Aceh, with 45 devices were installed to the traditional purse seine fisher at the northern water of Aceh. These devices were configured to automatically record locations each time the boat moved 30 m. Other important information, such as water depth, time, speed, and sea surface temperature (SST) were recorded as well. This study aims to examine the fishing ground and its fishing hotspot of the traditional purse seine fisher in the northern waters of Aceh. The data collection was performed between June 2007 and May 2009 and gathered as many as 922 data sets consist of 6,170,648 data points, from the 45 purse seine boats. Trough the data, we are able to identify the typical fishing activities of purse seiner and as many as 1,619 data points were being detected. The results indicate that there are five main regions of the fishing ground hotspot in the northern waters of Aceh, i.e. 1. Western offshore of Lhok Nga, 2. Northern offshore of Ulee Lheue, 3. Western offshore of Aceh Islands, 4. Eastern offshore of Aceh Island, and 5. Northern offshore of Krueng Raya. Among the fishing ground hotspot analyzed, the Western offshore of Lhok Nga is the highest density of fishing ground, while the lowest is at the northern offshore of Krueng Raya. These findings suggest that the western offshore of northern waters of Aceh are likely more fertile than its north- northeastern offshore.
Observation of male and female seahorse food types in the waters of Weh Island Indonesia
Authors: Muhammadar A A , Nasir M , Affan J , Agung S B , Putra D F 
Published: March 2021

Abstract
Sea horses have begun to be used as food and medicine and aquaculture efforts have begun. This study aims to observe the types of wild food consumed by each type of sea horse that lives on the waters of weh Island. The method is carried out by observation of the point VI of the station location. The results obtained were found 96 idv. Sea horses with 6 types of food (Ephausiae, Isopoda, Herpacticoida, Mysidiacea, Amphipoda and Calanoida). Both male and female sea horses The most common type of food found in the intestine is Amphipoda (43%) and the least is isopoda (0.05%).
The effectiveness of katuk leaves extract (Sauropus androgynous) as an antibacterial Vibrio sp. on the survival rate and growth of vannamei shrimp larvae (Litopenaeus vannamei)
Authors: Nurfadillah N , Zahara R , Rahimi S A E , Arisa I I , Perdana A W , Dewi C D 
Published: March 2021

Abstract
Vibriosis disease caused by the Vibrio sp. bacteria is one of the problems faced by shrimp farmers, namely the decreased survival rate during the larval period. This study aimed to determine the effect of the ethanol extracts of katuk leaves (Sauropus androgynous) as an antibacterial material on the survival rate and growth performance of vannamei shrimp larvae (Litopenaeus vannamei). This research was conducted at PT. Bibit Unggul Global Gen, Pantai Cermin, Serdang Bedagai North Sumatra, March - April 2019. The extraction evaporation process is carried out at the Unsyiah Faculty of Teacher Training and Education Chemistry Laboratory. Data were analyzed using the Completely Randomized Design (CRD) method with 5 treatment levels and 4 replications. The concentration treatment were is: 0 ppm, 600 ppm, 800 ppm, 1000 ppm and 1200 ppm. The sample used was vannamei shrimp larvae which had been infected with vibrio bacteria, then submerged with katuk leaf extract for 8 minutes. The parameters measured in this study were survival rate (SR%), absolute weight growth (g) and absolute length growth (mm), Total Vibrio Count (TVC Cfu/ml) and water quality. The ANOVA test results obtained that the katuk leaf extract (Sauropus androgynous) had a significant effect on survival (SR) and Total Vibrio Count (TVC) in vannamei shrimp larvae (P<0.05) and had no an significant effect on absolute weight growth and absolute length growth (P>0.05). In this study indicated that concentration 1200 ppm produced the highest the survival rate (93%) and the lowest amount of TVC (533 CFU/ml).
The study of Spirobranchus (christmas worms) based on substrate in Lamteung waters of Pulo Aceh, Aceh Besar District
Authors: Mursawal A , Sarong M A , Irham M , Hermi R 
Published: March 2021

Abstract
The objective of this paper is to analyze the number of Spirobranchus (Christmas worms) based on body color in the waters of Lamteung, Pulo Aceh District, Aceh Besar District, Aceh Province and to examine the substrate dominated by individual Spirobranchus in Lamteung waters of Pulo Aceh, Aceh Besar District, Aceh Province. The research activity was carried out in December 2018. The research area was determined by purposive sampling. Areas with Christmas worms were divided into three stations based on the substrate, namely station 1 with a massive coral substrate, station 2 with branched coral substrate, and station 3 with a substrate other than the two. Data were collected by documenting individuals based on color, coral substrate, and coral species occupied by Spirobranchus. The presence of Spirobranchus and its body color were analyzed descriptively. The results obtained were number of Spirobranchus based on body color found in Lamteung waters which occupied a Coral Massive were 13 individuals and occupied the Acropora Digitate were one individu. The dominance index obtained on the Coral Massive substrate was 0.86 and on the Acropora digitate substrate was 0.01. The conclusions obtained that Spirobranchus based on body color which occupies more individuals on the Coral Massive substrate, when compared to Acropora digitate subtrate. Coral Massive substrate type has a high degree of dominance compared to Acropora digitate substrate.
Does online marketing help in promoting fish? case study on fish companies in Aceh, Indonesia
Authors: Chan S , Fahlevi H , Fadli N , Hasibuan P , Sofyan S E , Rianjuanda  , Syukri M , Saidi T , Dawood R 
Published: March 2021

Abstract
This paper aims to analyze the usage of online marketing as a complement to existing offline marketing practices, with the intent to attenuate financial losses in the fishery industry. The current fish marketing business in Aceh still relies heavily on traditional methods, which, with their limited outreach, cause businesses to incur losses in the form of unsold and degrading fish due to longer waiting times between purchases. Unlike other types of commodities, the shelf life of fresh fish is very short. The longer the fish are kept by the fishermen or traders, the more damaged the products will be. However, the availability of consumers willing to buy the fish at any time is uncertain. This problem can be solved if the products are offered to a wider audience by using online marketing. This research uses descriptive qualitative research that produces descriptive data from respondents or observed behavior. Data were collected through interviews and observations in 3 fish export companies in Banda Aceh. The sampling technique used was purposive sampling, based on certain objectives and considerations. The findings suggest that by adding online communication marketing channels to promote fish products, such as Google Ads, as well as joining online marketplace platforms, the risk of suffering losses is reduced.