bluuebunny/crossref_metadata_2025 huggingface dataset:
RSS-based Fingerprinting Localization with Artificial Neural Network
Authors: Fong Peng Wye Kenny , Muhammad Mamduh Syed Zakaria Syed , Munirah Kamarudin Latifah , Zakaria Ammar , Binti Ahmad Norhawati , Kamarudin Kamarulzaman
Published: March 2021

Radio Frequency (RF) based indoor is challenging due to the multipath effect in indoor signal propagation such as reflection, absorption, diffraction due to obstacles, interference and moving objects within the environments. The multipath effect phenomenon will be worsened if Received Signal Strength (RSS) is used as the localization measurement parameter. The advancement of Artificial Intelligence (AI) may hold the key for the improvement of RSS based localization. The Artificial Neural Network (ANN) in AI outperforms the traditional algorithms in indoor localization due to its capability to learn the unique features given in the training datasets. This paper discusses indoor fingerprinting localization with different architectures of ANN network to localize object of interest with the given indoor environment. The size of the experimental testbed is 14m x 8m and the testbed consists of four identical receivers that receive the signal from an active transmitter. All the tested ANN architectures have RSS as inputs and the Cartesian coordinates as outputs with different hidden layers and hidden nodes. The relationship between hidden nodes and layers in ANN and the regression losses is studied in this paper. The RSS-based fingerprinting with ANN in this paper is considered as a multi-output regression problem. The result shows that the ANN architecture with four layers with a total number of 800 hidden nodes has achieved an average of 6.01098 regression losses and a mean Euclidean Distance error of 2.54m.
An IoT-Based Alarm Air Quality Monitoring System
Authors: Norlyana Azemi Saidatul , Wei Loon Koay , Amir Amiza , Kamalrudin Massila
Published: March 2021

In the air, there are many dust particles and pollutant gases such as carbon dioxide and carbon monoxide that created an air pollution. The indoor and outdoor air pollution has brought the illness and harmful effect to human health. This creates a need for an IoT Alarm Air Quality Monitoring System to detect the dust particle, pollutant gases, temperature and humidity in the surrounding. The objective of this research work is to develop an indoor and outdoor air quality monitoring system for different air quality parameters (carbon dioxide and carbon monoxide), temperature, humidity, and dust concentration (air particle). Besides, the Node-RED dashboard and Android app are developed for real-time remotely applications in this system. The system performance is evaluated by testing the sensor used in the research work. In this research work, NodeMCU, MQ7, MQ135, DHT22, and DSM501A are mainly used to develop the hardware. The MQTT is implemented as publish-subscribe network protocol to transfer the data as a message with the specific topic name. In the MQTT, the Node-RED dashboard, Android app and hardware are the MQTT client which are able to publish and subscribe the message. The Node-RED dashboard acts as a live dashboard for monitoring and alarming purpose whilst the Android Studio is used to develop an Android app for the monitoring and alarm system in the smartphone. The Node-RED dashboard and Android app are able to display the data and notification message for different parameters on healthy or unhealthy level. The user can activate and deactivate the alarm system in the Node-RED dashboard or Android app as well.
Temperature characteristics of Gate all around nanowire channel Si-TFET
Authors: Natheer Abdul-kadir Agha Firas , Hashim Yasir , Abduljabbar Shaif Abdullah Waheb
Published: March 2021

This paper study the impact of working temperature on the electrical characteristics of gate all around nanowire channel Si-TFET and examines the effect of working temperature on threshold voltage, transcondactance (gm), ION/IOFF ratio, drain induced barrier lowering (DIBL), and sub-threshold swing (SS). The (Silvaco) simulation tool has been used to investigate the working temperature on the Si-TFET characteristics. The temperature range in this study is from -25 to 150°C. The results indicate that the TFET must work in electronic circuits with the lower temperature as possible to get better performances. Furthermore, the TFET has good performances as a temperature nanosensor with diode connection mode under ON conditions.
Real Time Detection of Object Blob Localization Application using 1-D Connected Pixel and Windowing Method on FPGA
Authors: Lam CheeYuen , Ehkan Phaklen , Raof Rafikha Aliana A. , Jungjit Suwimol
Published: March 2021

Blob detection and localization is a common process used in the machine vision. Current existing blob detection method is using 2-dimensional kernel matrix which is higher in time consumption and also memory space. This study has proposed a dedicated digital architecture consist of two modules to detect binary image blob using only 1 -dimensional image pixel. First module is used to detect connected pixel in a row of pixel, and second module is used to perform windowing to justify blob location. This study has been successfully implemented and tested on Altera DE2 FPGA board. The proposed architecture only takes 24 clock cycles to deliver blob location and related features. The tested architecture only utilizes 1597 logic element, or 4.81% of the FPGA total resources.
Extreme rainfall in New Zealand and its association with Atmospheric Rivers
Authors: Reid Kimberley J , Rosier Suzanne M , Harrington Luke J , King Andrew D , Lane Todd P
Published: March 2021

Atmospheric rivers (ARs) are narrow and elongated regions of enhanced horizontal water vapour transport. Considerable research on understanding Northern Hemisphere ARs and their relationship with extreme precipitation has shown that ARs have a strong association with heavy rainfall and flooding. While there has been very little work on ARs in the Southern Hemisphere, global climatologies suggest that ARs are equally as common in both hemispheres. New Zealand in particular is located in a region of high AR frequency. This study aims to test the hypothesis that ARs play a significant role in heavy precipitation and flooding events in New Zealand. We used a recently developed AR identification method and daily station data across New Zealand to test for the concurrence of ARs and extreme rainfall. We found that, at each of the eleven stations analysed, at least seven to all ten of the top ten heaviest precipitation days between 1980 and 2018 were associated with AR conditions. Nine of the ten most damaging floods in New Zealand between 2007 and 2017 occurred during AR events. These results have important implications for understanding extreme rainfall in New Zealand, and ultimately for predicting some of the most hazardous events in the region. This work also highlights that more research on ARs in New Zealand is needed.
The application of different heat processing technique on eel (Monopterus albus) galantine
Authors: Fadhlullah M , Prasetyati S B , Marleni N R , Mahmud
Published: March 2021

Eel (Monopterus albus) is one of the fisheries commodities commonly used as food material in Indonesia. An innovation to attract more people to consume this high nutrient commodity is by diversifying eel into a galantine. This study investigated the effect of different eel composition and heat processing techniques on the sensory, nutrient, and microbiology quality of the eel galantine. Four different eel galantine formulas were examined, viz. steaming + 5% eel (A), steaming + 10% eel (B), grilling + 5% eel (C), and grilling + 10% eel (D). The sensory, nutrient, and microbiology quality of the samples were analyzed. The study indicated that the panelists preferred sample C’s appearance and aroma. The protein, moisture, ash, and fat content in all samples met the Indonesian National Standard (SNI) requirement. Sample B had higher vitamin A compared to sample D. The Total Plate Count parameter did not meet the requirement.
Ecosystem approach applicability to sustain endemic fishes in Lake Laut Tawar, Aceh
Authors: Kamal M M , Husnah  , Koeshendrajana S , Nasution S H , Kurniasari N , Hasri I , Iriadi R
Published: March 2021

Lake LautTawar is the only home for two endemic cyprinids, i.e. Rasboratawarensis and Poropuntiustawarensis, both are economically important species supporting food security and livelihood to local inhabitants. The present research was aimed to examine the applicability of EAFM, ecosystem approach to fisheries management in protecting endemic fishes in LLT. By referring to standard module, the domains and its indicators were ranked and weighted. Having given score to the domain, the composite domain and the sum of aggregation values of all domains, the performance of fishery management could be presented as flag model. Gap analysis was implied by contrasting EAFM’s recommendation against current achievement with refer to defined indicator. The applicability of EAFM to sustaining endemic fishes was assessed by means impact analysis under the scenario of three generic goals(1) augmenting the quality and quantity of habitat and sustainable utilization of fishery resources, (2) promoting higher socio-economic benefits, and (3) improving function and synergy among management institutions. The results showed that recommendations from EAFM’s model were all doable and that impact positively to sustaining endemic species. The challenges in implementation encompass authority, cooperation and coordination, stakeholders, invasive species and administration status of the lake.
Growth estimates of pelagic thresher shark (Alopias pelagicus Nakamura, 1935) in the Indian Ocean Southern Java waters
Authors: Chodrijah U , Lestari P , Prihatiningsih  , Tirtadanu
Published: March 2021

Alopias pelagicus were highly migratory species, oceanic and almost always found in tropical and temperate seas. This species was particularly vulnerable to exploitation of both targets and side catches. Research was conducted in May 2015 to November 2016 at the landing site of the Cilacap Fishing Port. This research aims was to estimate the growth as the foundation for knowing the stock status utilization rate. The research method was used through observation and data collection by the enumerator. The 1410 individual sharkswere a catch of long line caught in the Indian Ocean Southern Java waters. The results showed that the size structure of the pelagic thresher shark ranged between 60-270 cm FL with a mode ranging between the size of 140 cm FL. The length weight relationship of the male and female shark indicates the growth were allometric positif. A comparison of male and female shark was not balance (1:2.82). Mortality parameters for the covering the total mortality rate (Z), natural mortality rate (M) and the rate of fishing mortality (F), respectively at 0.796/year, 0.295/year and 0.50/year. The rate of exploitation (E) of pelagic thresher shark was 0.73/year. Thus, the utilization rate of pelagic thresher shark was over fishing.
Similarity and genetic relationship analysis of 28 species of Pangasiidae (Siluriformes, Ostariophysi)
Authors: Gustiano R , Prakoso V A , Ath-Thar M H F , Kusmini I I , Radona D
Published: March 2021

Pangasiid catfishes have most diverse morphotype among members in the family. In the past, misidentification often occurred for the species definition. After numerical taxonomy developed, the level of similarity or phenetic analysis was used to distinguish different taxa. While relationship and evolutionary evidence within species in Pangasiidae was analyzed based on the genetic data. The aim of the present study was to understand the congruency between phenetic and genetic analysis in family Pangasiidae. Euclidean distance was applied on phenetic analysis to produce phenogram of similarity. Sequencing of 12s rDNA was conducted to illustrate the genetic relationship. Both analyses showed that species member in Pangasiidae supported the genera proposed in the previous study. Four genera are in Pangasiiidae. The both analysis also support to the hypothesis of geological history, palaentology and models of other family in the observed area. The results confirmed that Pangasiidae may occurred 20 million years ago before separation of the islands with the mainland Asia.
The profile of myxobolus infection in the gill tissue of common carp (Cyprinus carpio L.) strain punten from concrete ponds
Authors: Hardiono S A , Yanuhar U
Published: March 2021

One of the successes in cultivation activities is by maintaining the quality of fish and their environment. Common carp (Cyprinus carpio L.) cultivation is one of the leading commodities in various regions, especially East Java. In Indonesia, there are several types of common carp strains, one of the seventh strains in Indonesia is the Punten strain from the Punten, Batu area of Malang. However, several cases show incidents of disease attacks, one of those diseases that often infect fish in Punten is the parasite Myxobolus sp. The observation of tissue lesion was used gills from common carp (C. carpio L.) taken from The Unit of Freshwater Cultivation Management (UPBAT) Punten, Batu Regency. Based on the results of observations, the visible lesion in the gill tissue, among, oedema, haemorrhage, the fusion of lamellae and vacuoles with scores and proportions of damage per field of view (%) in infected fish, respectively are, score 2 moderate (52%), 1 minor (25%), 1 minor (12%) and 2 moderate (18%). Based on the assessment, the scoring results show mild to moderate damage, so it is still classified as early-stage damage or it can also show the fish’s ability to recover in a good environment. However, the presence of infectious infections also allows the management of waste and water quality management in each pond, to maintain the environmental health of the common carp.
The diversity and abundance of phytoplankton in Lubuk Damar coastal waters, Aceh Tamiang, Indonesia
Authors: Darmarini A S , Wardiatno Y , Prartono T , Soewardi K , Ardania D
Published: March 2021

In the coastal ecosystem, mangroves play essential roles in biodiversity and energy flow, and phytoplankton functions as primary producers. This study aims to ascertain the diversity and abundance of phytoplankton in mangrove habitats at Lubuk Damar, Aceh Tamiang. Sampling was performed atLubuk Damar in August 2017 and January 2018, Aceh Tamiang Regency, via a plankton net with a 20-micron mesh size. The outcome of this study will help to evaluate the phytoplankton contribution in mangrove estuarine ecosystems. In January 2018, the phytoplankton was more abundant than in August 2017. However, diversity was higher in August compared to January. The Index Diversity in August ranged between 1.24 – 2.83 and in January around 0.83 – 2.35. Furthermore, the Index Dominance in January was within 0.17 – 0.73, and in August around 0.08 – 0.48. Evenness Index in January was around 0.23 – 0.64, and in August, 0.11 – 0.87. In January, Chaetoceros sp. was dominant in water, followed by Bacillaria sp, and Biddulphia sp. In August, Leptocylindrus sp. was dominant in phytoplankton diversity, followed by Biddulphia sp. and Chaetoceros sp. In coastal water of Lubuk Damar, the presence of diatoms dominate the abundance phytoplankton.
Spatial distribution of mangrove using a geographic information system in Aceh Besar
Authors: Azhar R , Rusdi M , Irham M , Fuadi A
Published: March 2021

The mangrove forest ecosystem is unique, both because of the subtract of siltation which results in less soil abrasion, high soil salinity, and experiencing a cycle of inundation by tides. Only a few plant species survive in such a place, and most of these species are unique to mangroves because they have undergone a process of adaptation and evolution. It is not widely known how far the mangrove areas are spread in Aceh. Therefore, research needs to be carried out with the aim of knowing the extent of the sustainability of mangrove management in terms of sediment characteristics. Information about the distribution, area and change of mangrove land cover can be determined by spatial analysis using a Geographical Information System (GIS) using ArcGIS. The method used in this research is the transect method and analysed based on the identification of mangrove species. Based on the analysis of the results of the study, it was identified that the mangrove species found in the research location of Peukan Bada sub-district (West Aceh Besar) consit of Rhizopora mucronata and Sonneratia alba, while the mangrove species found in Baitussalam (north Aceh Besar) were Rhizopora mucronata and Sonneratia alba. Meanwhile, based on observations with satellite imagery and location surveys, it was found that the mangroves in Baitussalam sub-district were denser and spread evenly than in the Peukan Bada area.
Community structure of gastropods and bivalves associated in mangrove ecosystem at Pusung Cium Island, Seruway, Aceh Tamiang
Authors: Dewiyanti I , Harbi M , ElRahimi S A , Ulfah M , Damora A
Published: March 2021

The purposes of the present study were to analyze the community structure of gastropods and bivalves as well as to analyze the relationship between the abundance of gastropods and bivalves within mangrove density in Pusung Cium Island, Seruway, Aceh Tamiang Regency. The research was conducted from October to November 2019. The method used in determining the location of the research station was Stratified Random Sampling based on the density of mangrove vegetation, the station 1st, 2nd, 3rdwere dense, medium, and rare categories, respectively. There were 4.67 ind/m2consisted of 3 species for bivalves class and 143.33 ind/m2species of gastropods class consisted of 41 species. The highest abundance was in station three, and the highest gastropods species abundance wasLittorina angulifera(51.33 ind / m2) andSaccostrea cucculata(1.33 ind / m2) for bivalves class. Biological indices showed that the diversity index of gastropods and bivalves was high and ranged from 4.24 to 2.35, evenness and dominance indices were ranged from 0.44 to 0.79 and 0.20 to 0.21. Furthermore, the distribution pattern of gastropods and bivalves were uniform, random, and clumped. The correlation between the density of mangrove and abundance of gastropods-bivalves was weak and moderate and there was no significant correlation between the density of mangrove and abundance of biota aquatic (gastropods and bivalves) where Psig > 0.05. In conclusion, the community structure of gastropods and bivalves was in stable condition showed by high diversity index, moderate evenness index, and low dominance index.
Study of the suitability of jetty facilities to the number of vessels on Kutaraja fishing port, Banda Aceh
Authors: Chaliluddin M A , Pujanna A D , Iqbal T H , Thaib R , Kandi O
Published: March 2021

The jetty of the Kutaraja fishing Port which has been built at this time is not in accordance with the number of fishing vessels currently available, there are still many vesel moored in the Krueng Aceh river basin. The length of the jetty is a basic facility that determines the carrying capacity of the fishing port. The purpose of this research is to assess the suitability of the jetty facilities to the number of fishing vessel moored at Kutaraja fihing port to assess the capacity and determine the suitability of the currently available jetty. This research uses a descriptive method that is survey, namely by making direct observations of objects in the form of jetty and vessel. Based on the calculation of the ideal length of the jetty, the current requirement for the jetty of Kutaraja fishing port based on the calculation of the number of fishing vessels is 1.177 m. The length of the jetty of the Kutaraja fishing port that has been built at this time is not suitable, it is necessary to add a jetty of 836 m. Based on the results of this study, it is highly recommended to arrange a mooring pattern at the mooring jetty so that no more vessel moor in the river basin.
Strategy for the development of local fisheries product processing in coastal areas North Konawe Regency
Authors: Fajriah  , Isamu K T , Mustafa A , Arami H
Published: March 2021

This study examines the strategies offered to develop local fishery product processing activities in Molawe Village, North Konawe Regency. The research was conducted in Molawe sub-district, North Konawe district, from June to August 2020. The aim is to identify, identify and implement strategic steps that support the Minapolitan Area program in the coastal area which was proclaimed by the North Konawe Regency government. Data analysis using SWOT analysis. The results show that the appropriate development strategy is: (1) Capacity building for community empowerment through developing the quality of human resources, developing the quality of existing local processed products, diversifying healthy and hygienic processed products, developing markets, (2) increasing the capacity of government roles through infrastructure support and fostering protection of potential coastal areas, assistance to maintain the cleanliness and balance of the coastal environment (3) Establish partnerships and networks in developing fishery product processing businesses.
Socio-economic studies of coastal communities at the Fishing Port of Kutaraja, Banda Aceh, Indonesia
Authors: Thaib R , Ilda I , Rahmah A , Chaliluddin M A , Aprilla R M , Putra D F , Fuadi A
Published: March 2021

Kutaraja Ocean Fishing Port (KOFP) has undergone significant development from small traditional-based fishing port (PPP, type C) to large modern-based fishing port (KOFP, type A) in the past couple years. The rapid development of the Kutaraja fishing Port has certainly had implications on socio-economic status of coastal communities around it. This study aimed to determine the socio-economic status of coastal communities around Kutaraja Ocean Fishing Port. Samples were taken from several respondents; fishermen (20 people), fish traders (15 people), food vendors (10 people) and management staff (2 people) to obtain primary data and secondary data. Data analysis was conducted descriptively with a quantitative approach i.e. the data collected was subsequently tabulated in the form of tables and graphs by using excel application. The results showed that the highest level of education of coastal communities around KOFP was high school level and the average ages of respondents was belong to the productive age at group of 27-50 years. Economic activity was seen from the number of dependents at most three people in each family and the rate of income averaged Rp.1.500.000-Rp. 2.000.000 per month. The pattern of public adaptation of social activity was demonstrated by the presence of some fish traders and food vendors who are still using the jetty area to perform their activities and cooperate with each other in utilizing the facilities. It can be concluded that the socio-economic status of coastal communities around KOFP was affected by activities in KOFP. The existence of KOFP showed a big impact on the socio-economic status of the coastal community around KOFP.
Analysis of management performance index and user satisfaction index in Kutaraja Fishing Port, Banda Aceh, Indonesia
Authors: Chaliluddin M A , Pratiwi A , Rizwan T , Kandi O
Published: March 2021

The problems faced by managers and being felt by fishing port users today are the problem of environmental cleanliness and the lack of fishin port management efforts in serving fishermen’s needs, this is due to the government’s lack of attention in implementing the functions and roles of fishing ports and existing facilities. This study aims to determine the level of performance of the Kutaraja fishing port management and the level of user satisfaction regarding the services of the Kutaraja fishing port. This research was conducted in February 2020. Located at the Kutaraja fishing port. The research method used is the survey method, namely by observing and collecting data directly on the performance of the Kutaraja fishing port management and user satisfaction regarding the services of the Kutaraja fishing port. Data collection was carried out by interview assisted by a linsit of questions / questionnaires. The results showed that the percentage value of the fishing port performance index was 78.2%. This value shows that the performance of the Kutaraja fishing port is already at a good level. The user decision index value obtained is 94.02%. This shows that the Kutaraja fishing port is still lacking in the provision of facilities, the utilization of the facilities is still low and the management of the facilities does not reflect that overall users are very satisfied with the service performance of Kutaraja fishing port, Banda Aceh, Indonesia.
TSS distribution of Banda Aceh waters
Authors: Ondara K , Agustina S , Purnawan S
Published: March 2021

Coastal areas have conditions resulting from the sea-land interaction and then affect the ecological conditions in the area. One of the inputs that is carried from the land to the sea through river flow is suspended sediment. Suspended sediment studies have been carried out in the waters north of Banda Aceh City. Sampling has been carried out on the sea surface layer within 24 sampling points. The highest TSS value was recorded at 14 mg/l with an average of 7.42 mg / l. This value is still in accordance with the quality standards set by the Indonesian Ministry of Environment.
Lobster aquaculture business in East Lombok Regency: challenges and prospects
Authors: Apriliani T , Yuliati C , Yusuf R , Triyanti R , Zulham A
Published: March 2021

Lobster aquaculture plays a significant part of coastal communities in East Lombok Regency, some farmers’ activities to on-grow lobster started in early 2000 at several sites. Lobster aquaculture development has begun to carry out since government policy support trough Marine and Fisheries Regulation No. 12/2020. This study aims to identify some opportunities and challenges lobster aquaculture, especially in East Lombok Regency, based on SWOT analysis as a recommendation considered for lobster aquaculture development in the future. The results show that stakeholders have a relatively positive perception about developing the lobster aquaculture business in East Lombok because they believe the strengths and opportunities outweigh the weaknesses and threats. Suitable natural conditions are considered the most crucial power. Simultaneously, many untapped markets and government’s support for the sector are critical opportunities for further developing lobster aquaculture. Limitations of aquaculture technology, provision of feed, a supply of seeds and mortality, and lobsters’ disease rates are weaknesses in developing lobster aquaculture. Besides, reliance on the markets of China, Taiwan, and Hong Kong is considered a substantial threat that must be faced. The findings of this study can be used by policymakers to develop the lobster aquaculture business further.
Genital reversal of betta fish by immersion using steroid extract of sea urchins
Authors: Susanto G N , Sutyarso  , Busman H , Kurniawan N R , Hasanah S M
Published: March 2021

Sea urchin, Diadema setosum is a potential fishery commodity with high economic value. It contains a steroid compound as an aphrodisiac in male monosexes (masculinization). In aquaculture usually used 17α-methyl testosterone, but it was difficult to decompose or it contaminated with carcinogens and pollutants. Therefore, it needs to be replaced with safer natural hormones from sea urchin. Betta sp. is an ornamental fish with high demand because of its colorful, diverse tail shapes, and price of male is higher than female, so that male cultivation is beneficial. This study aimed to utilize steroid compounds of sea urchin gonad extracts in masculinization of betta fish. In particular, it is to examine the steroid compounds by providing different doses and soaking times to the formation of male. The study was conducted using a completely randomized design method which was further classified into two stages. In first stage, the soaking dose was 0, 2, 4, 6 and 8 mg L-1 for 12 h, while in stage II, the immersion duration was 0, 12, 18, 24 and 30 h at a dose of 4 mg L-1 in larvae aged 2 weeks. Each treatment was repeated 3 times, and data were analyzed using Anova as well as with the LSD test at the level of 5%. The results showed that on the immersion in dose of 4 mg L-1, the highest male individual of 84.10% was formed. Also, a dose of 4 mg L-1 was significantly different from the control and 6 mg L-1, but it was not significantly different from that of 2 and 8 mg L-1. The difference in immersion time significantly affected the success of male monosex formation and the duration of 12 h in dose of 4 mg L-1 sea urchin extracts showed the highest percentage of 84.00%.
An attempt of digitalization Bali Strait purse seine capture fisheries data
Authors: Natsir M , Waryanto  , Wada M
Published: March 2021

Similar situations with most small-scale fisheries globally, data collection remains the most highlighted issues in Bali sardine purse seine fishery. Nowadays, one of the promising approaches in fisheries data monitoring is through a technological application. This study attempts to conduct the digitalization of capture fisheries data through a tablet application development and implementation, namely MICT-L. It develops since June 2018 based on an existing paper recorder system and operated by the fishing-port officer. MICT-L was fully established in November 2018 in Muncar and September 2019 in Pengambengan fishing port, and this system has been collected and store digital landing data successfully. In addition to the initiation, a GPS-trackers system, namely TREKFISH, was installed in November 2019 and successfully collected fishing ground position data from 19 vessels until February 2020. During the study, a total of 8,248 landings in Muncar and 6,598 landings in Pengambengan were collected and stored accordingly. MICT-L and TREKFISH data successfully support the faster near real-time statistical analysis and spatial grid productivity. These two initiations are potent tools for collecting and visualizing digital catch data and fishing grounds for Bali purse seine fisheries.
Composition and catch number of fish landings on the eastern coast of the Aceh region
Authors: Fadli N , Syafruddin S , Hasibuan P , Sofyan SE , Rianjuanda R , Syukri M , Saidi T , Dawood R
Published: March 2021

Information on the composition and number of catches that comprise fish landings is an essential component of fisheries management. Because such data is especially limited with regard to the eastern coast of the Aceh region of Sumatra, the present study examined fish landing characteristics for this region. Data were collected from November 24 to December 24, 2019, in seven fish landing sites (TPI) in three districts (Aceh Utara, Bireuen, and Lhokseumawe) on the eastern coast of the Aceh region. Fishes were recorded daily in each TPI during the study period, and a total of 32 fish categories were identified. Pelagic fish dominated the catch: longtail tuna, scad, island mackerel, yellowfin tuna, Carangidae, frigate tuna, skipjack tuna, albacore, kawakawa, and white snapper were the most landed fish during the survey period. The study also showed marine fisheries production to be 181,994 kg/month, or an average of 7,000 kg/day. Across the three districts, Bireuen had the highest fisheries production (122,683 kg), followed by Aceh Utara (35,092 kg), and Lhokseumawe (24,220 kg). This study provides baseline data that will be valuable in developing an effective fisheries management strategy plan in the region.
Bioaccumulation of heavy metal of lead (Pb) in white shrimp (Penaeus merguiensis) on sediments in Belawan Sea Waters, North Sumatra Province
Authors: Yusni E , Siregar A Z , Rohim N
Published: March 2021

The water of Belawan Sea have a wealth of marine resources that are quite important to supporting the economy surrounding communities. This study aims to measure the content of heavy metals lead, Pb (sediment and white shrimp) and how much heavy metal of lead is accumulated by white shrimp (Penaeus merguiensis) from sediments. Lead, Pb of heavy metals in white shrimp and sediments were analyzed by using Atomic Absorption Spectrophotometer (AAS). The results showed that the average concentration of Pb heavy metals in sediments was found of 5,90-6,78 mg / kg, when the average concentration range of Pb heavy metals in white shrimp was found of 0,014-0,089 mg / kg, while the average accumulation of heavy metals Pb in white shrimp from sediments was found the value of 0,0075. The bioaccumulation value categorized was lower because the value was found below than 1. Penaeus merguiensis indicator of organisms can be used in measuring exposure to heavy metal Pb in water.
Coral reef and reef fishes of core zone in the marine proctected areas of Aceh Besar, Indonesia
Authors: Muhammad M , Firdaus R , Kurnianda V , Jalil Z , ‘Akla C M N , Dewi I J P
Published: March 2021

This research was conducted in January 2018 in the core zone of the Marine Protected Areas Peukan Bada and Lhoknga, Aceh Besar. The purpose of this study was to determine the coral reef cover and the abundance of reef fish in the core zone areas. The method of collecting coral reef cover data used the transect photo. Further, we analyzed these data using CPCe 4.1 software with a uniform grid technique. Moreover, the collection of coral fish abundance data using the Visual Census. The results of the study showed that the coral reef cover in the core zone of Lhoknga and Lampuuk water is 35.36% and 43.09% which are categorized as “moderate damage” with an abundance of reef fish value are 23900 Ind/Ha and 43600 Ind/Ha, respectively. On the other hand, the coral reef cover in the core zone of Bunta Island waters was 64.91% which was categorized as “good” with an abundance of reef fish value is 28600 Ind/Ha. However, the coral reef cover in the core zone of Batee Island waters was 23.68% which was categorized as “badly damage” with an abundance of reef fish value is 29300 Ind/Ha. In addition, the coral reef cover in the core zone of Tuan Island waters was 25.87% which was categorized as “moderate damage” with an abundance of reef fish value is 58100 In/Ha. Based on the results, the data conclude that the condition of coral reefs in the Marine Protected Area in the Lhoknga, Lampuuk, and Batee Island water requires proper handling in improving natural resources in their core zone.
Growth of oyster (Crassostrea sp.) with different stocking density in Alue Naga waters, Banda Aceh Indonesia
Authors: Rusydi I , Dewiyanti I , Maisuri M , Putra D F , Octavina C , Nurfadillah N , Wulandari W
Published: March 2021

Oyster (Crassostreasp.) is one of the potential bivalves that have big potency to increase Indonesian economic income. This study aimed to investigate the growth of oysters (Crassostreasp.) with different densities, and to determine the effect of different stocking densities on growth and survival in the submerged raft method in oyster aquaculture in Alue Naga district, Indonesia. A completely randomized design model (CRD) was used with three treatments and triplications. There were three different stocking densities namely 25, 30, and 35 ind/1500 cm2. The results showed that the absolute length and weight of oysters with a density of 25, 30 and 35ind/1500 cm2were ranged from9.49 mm and 10.60 grams, 4.83 mm and 9.13 grams and 4.62 mm and 5.76 grams respectively. It is concluded that the best growth oyster in this study was at 25 ind / 1500 cm2stocking densities.
Impact of ENSO and IOD on chlorophyll-a concentration and sea surface temperature in the Bali Strait
Authors: Sambah A B , Wijaya A , Iranawati F , Hidayati N
Published: March 2021

ENSO and IOD are oceanographic phenomena that occur in the tropical Pacific Ocean and Indian Ocean, due to the interaction between the sea and the atmosphere. The study aims to determine the impact of ENSO and IOD on the abundance of Sea Surface Chlorophyll (SSC) and Sea Surface Temperature (SST) in the Bali Strait. The data used are Ocean Nino Index (ONI), Dipole Mode Index (DMI), Sea Surface Chlorophyll (SSC) and Sea Surface Temperature (SST). The method applied the SSC and SST anomaly analysis during the ENSO and IOD periods from March 2000 to July 2020. The results showed that during the ENSO and IOD periods in the eastern monsoon, there was an increase in SSC concentrations and a decrease in SST in the Bali Strait. In the ENSO period, there were La Nina and El Nino phases, while IOD had positive and negative phases. During the observation, it was known that the mean range of SSC was 0.49 - 1.91 mg m-3 and 25.32 - 29.30 °C for SST. SSC anomaly during the observation period was between -0.04 - 0.62 and SST was -0.66 - 1.47. Therefore, it was known that the period that causes an increase in high SSC and a decrease in SST in the waters of the Bali Strait was during the El Niño period along with positive IOD phases in 2006, 2015, 2018, and 2019.
A preliminary study on biological aspects of the orange-spotted grouper (Epinephelus coioides) harvested in the northern coast of Aceh, Indonesia
Authors: Fadli N , Damora A , Muchlisin Z A , Dewiyanti I , Ramadhaniaty M , Zhelfi Z , Roka N F , Fitriani F , Rusdi M , Nur F M , Batubara A S , Siti-Azizah M N
Published: March 2021

Considered as the least concern (LC) based on the IUCN category, the biological information ofEpinephelus coioidesis limited. The present study’s objective was to study some biological aspects of the orange-spotted grouper harvested in the northern coast of Aceh. The fishes were collected from June - August 2020 in several fish landing sites (TPI) and fish market located in Banda Aceh and Aceh Besar district. In total, 30 fish specimens were collected in this study. The total length (TL) of the fishes ranged from 194.1-237.6 mm. Also, the weight of the fishes ranged from 100.7-176.7 g. All the collected fishes were female with the gonad maturity levels in level one (1), with the average gonad weight of 0.01 g. This study provides a reference point of some biological aspects of the orange-spotted grouper that will help develop a practical fisheries management of the species.
Population dynamics of Indian scad (Decapterus russelli) in the northern and western waters of Aceh
Authors: Damora A , Firdiyanti T , Rahmah A , Aprilla R M , Chaliluddin M A
Published: March 2021

Indian scad (Decapterus russelli) is an important commercial species that landed at the Fishing Port of Kutaradja, Banda Aceh. This research was conducted to investigate the impact of exploitation onD. russellistock based on length-weight relationship, length distribution, length at first capture, von Bertalanffy growth parameters and function, mortality parameters, and exploitation rate. The data collection was conducted from February to March 2020 in the Fishing Port of Kutaradja, Lampulo, Banda Aceh. A total of 170 samples were measured with stratified random sampling method. Analysis of population dynamics parameters used the FAO-ICLARM Stock Assessment Tools (FiSAT) program. The results show thatD. russellihas a positive allometric growth pattern, with a fork length (FL) ranging from 19.5-31.5 cm. The length of first capture was 23.1 cm. The asymptotic length (L∞) ofD. russelliwas 31.50 cm with a growth rate (k) of 0.88/year and fish age at length 0 (t0) of 0.178/year. The estimated natural mortality (M), fishing mortality (F), and total mortality (Z) were 1.63/year, 2.22/year and 3.85/year respectively. The exploitation rate (E) ofD. russelliwas 0.58/year that indicatedD. russelliin the northern and western waters of Aceh has been fully exploited.
White-edged lyretail (Variola albimarginata): A preliminary study on some biological aspects
Authors: Damora A , Fadli N , Muchlisin Z A , Dewiyanti I , Batubara A S , Nur F M , Zhelfi Z , Roka N F , Fitriani F , Siti-Azizah M N
Published: March 2021

The groupers are among the fishes that are threatened globally due to their high economic value. However, their biological information is limited, including the white-edged lyretail (Variola albimarginata). The fish is considered as the least concern (LC) based on the IUCN category. The objective of the present study was to study some biological aspects of the white-edged lyretail harvested in the northern coast of Aceh. The fishes were collected in several fish landing sites (TPI) and fish market located in Banda Aceh and Aceh Besar District from June to August 2020. A total of 30 fish samples were collected in this study. The total lengths (TL) and weights (W) ranged between 14.30-36.02 cm and 33.2-581.6 g, respectively. In addition, 25 of collected fishes were female with the gonad maturity phases varied from one (1) to four (4) with the gonad-index (GSI) ranged between 0.1758-2.4038. The result of this study will be valuable in developing fisheries management and conservation of the species.
Identification of inorganic waste at mangrove ecosystem, Gampong Jawa, Banda Aceh
Authors: Agustina S , Khairullah K , Rusydi I , Purnawan S , Karina S , Zamzami Z
Published: March 2021

The plastic pollution entering the ocean has been global concern. However, the research about the mangrove ecosystem poses the plastic waste in Aceh Province is limited. This study aims to investigate the inorganic waste based on type and its abundance in mangrove area at Gampong Jawa, Banda Aceh. Transect was installed along 6m x 100m at three stations. The total waste collected was 134 items with the most abundance was plastic (126 items). The most common type found at the three stations was plastic bags. Rubber and glass were also observed trapped in Gampong Jawa’s mangrove area. The high level of debris abundance at station 1 was suspected because station 1 has the highest mangrove density so that allows the debris trapped at the mangrove roots. Stations 2 and 3 have less debris abundance because the low density of mangroves.
Strategy and fish marketing systems in Kota Bawah Timur Fishing Port, Sabang Indonesia
Authors: Chaliluddin M A , Affan J M , Rahmah A , Aprilla R M , Ariani C Z
Published: March 2021

Kota Bawah Timur Fishing Port is a landing place that has a fairly busy activity and always routinely conducts fish auctions every morning. The dominant fishing gear used by fishermen in this port is hand line and hand line, landed fish are catches which have important economic value. The problem faced now is that the fisheries business system in this fishing port is still simple, the marketing channels still go through between regions and, facilities that could support marketing such as an ice factory were damaged. The purpose of this study is to provide recommendations and strategies regarding the marketing system for fish landing bases Kota Bawah Timur, this research was conducted in June 2020. The method used in this research is purposive sampling method using S.W.O.T analysis (Strengthen, Weakness, Opportunities, and Threats) where an effective strategy can be formulated systematically by comparing internal and external conditions. The results obtained are that fishing port has three marketing channels, namely: market channels, channel for household processing and channel for tuna collectors. Kota Bawah Timur Fishing Port also has an internal value of 0.43 and an external value of 0.28, of the two conditions factors have a positive value. These results indicate that the marketing growth in this fishing port has a strong performance and opportunities in its marketing.
Artemia sp. enrichment with vitamin C and taurine to support growth and survival rate of vaname (Litopenaeus
vannamei) larvae: early study
Authors: Monica Thia , Supono  , Linirin Widiastuti Endang
Published: March 2021

The aim of the study was to determine the effect of Artemia sp enrichment with vitamin C and taurine on the growth and survival rate of Vaname (Litopenaeus vannamei) post larvae. The data was collected using randomized design with four treatment groups, which are control (group A), Artemia sp enriched with 50 mg vit CL-1 media (group B), Artemia sp enriched with 50 mg taurine L-1 media (group C), and Artemia sp enriched with 25 mg vit C and 25 mg taurine L-1 media (group D). Data were analyzed statistically using ANOVA followed by LSD/Tukey at 5% level, using the growth and survival rate of the vaname post larvae and water quality as the data variable.
Food and feeding habits of two species ornamental fishes from Bira Cot, Aceh Besar, Indonesia
Authors: Damora A , Nur F M , Batubara A S , Nugroho R A , Fadli N , Muchlisin Z A
Published: March 2021

Food and feeding habits of the two ornamental fish species confined to 2 genera and 1 family from Bira Cot River. The study has been conduction between February, 2020 and July, 2020. A total of 20 fishes were randomly collected from Bira Cot River during the study period. Observation was made for the total length, standard length, body weight, relative length of alimentary canal and qualitative and quantitative analysis of stomach contents. The relative length of alimentary canal was described in relation to feeding habit. The stomach content analysis indicated that Danio albolineatus omnivores while Puntius oligolepis herbivores. In the present study, the determination of food composition and feeding habits of studied fish species may give some important information for culture of these ornamental freshwater fish species.
Preliminary study: Species identification of Rasbora sumatrana through the cytochrome oxidase subunit I DNA barcoding marker
Authors: Norfatimah M Y , Akram M A R , Lyena W Z A , Aili Z N , Farizan A
Published: March 2021

Rasbora sumatrana or locally known as “seluang” in Malaysia is a pelagic fish. Unlike its other congeneric species is not categorized as an ornamental fish. Samples of the presumed R. sumatrana was obtained from an abandoned swamp in Hulu Langat, Selangor. Initial identification of the samples was conducted based on meristic and morphometric analyses, which showed congruence with R. sumatrana when referenced to FishBase. To complement the analysis, a molecular study was conducted based on the cytochrome oxidase subunit I (COI) DNA barcoding marker. Confirmation of the species identity was done by BLAST results with six voucher sequences of R. sumatrana and other Rasbora species from GenBank. The relationship of Rasbora spp. was analysed by phylogenetic and Automatic Barcode Gap Discovery (ABGD) analysis. Contradicting with morphological and meristic data analysis, both Maximum-Likelihood and Maximum Parsimony phylogenetic tree showed that the currently studied samples did not cluster with R. sumatrana. We believe that they may represent cryptic diversity and are tentatively classified as Rasbora spp.
Use of cytological and molecular biological method for water pollution monitoring
Authors: Farizan A , Norfatimah M Y , Aili Z N , Lyena W Z A , Indah M A
Published: March 2021

Allium cepa test is widely used to evaluate the effects of water pollution based on dividing cells since it is a very sensitive tool for prediction and recognition of environmental stresses. This study aimed to evaluate the potential use of A. cepa as a molecular biological indicator to detect the presence of water pollution. A. cepa roots were exposed to water samples at 24 and 48 hours with tap water and hydrogen peroxide solution as controls. The effects of water sample exposure on A. cepa were analysed based on the plant cytotoxicity, genotoxicity, and expression of stress gene between test samples and control sets. The findings showed no significant changes observed in mitotic index of A. cepa exposed to water samples compared to negative control. There is also no expression of alliinase gene was detected. However, there is chromosomal abnormalities observed in A. cepa exposed at 24 and 48 hours. The chromosomal abnormalities detected include lagging chromosome, c-mitosis, disrupted anaphase, disrupted metaphase, spindle disturbance, and stickiness. Our study shows that molecular biological method could be a potential method to serve as an effective, sensitive, and useful marker for water pollution determination.