bluuebunny/crossref_metadata_2025_split huggingface dataset:
Length based data of Nemipterus japonicus to spawning potential ratio (SPR) estimation on small scale fisheries (SSF) management in Sunda Strait
Authors: Yonvitner  , Boer M , Kurnia R 
Published: March 2021

Abstract
Spawning potential ratio (SPR) is an important parameter to ensure fish stock reproduction, recruitment, and sustainability. This approach more efficient and effective applied to poor and limited information and data to management. Therefore, we used the SPR approach in small scale fisheries, particularly on Nemipterus japonicus species in Labuan-Sunda Strait area. This research was conducted in the Labuan fish landing port from 2013 until 2019. The length data were collected each year and then analyzed using the basefoot ecologist toolbox application. The result has shown that SPR of N japonicus ranged from 1 to 6%, and it’s relatively low and potentially unsustainable. Fish length spawning at 50 percent (SL50) ranged from 139 mm to 196.29 mm. And then fish length spawning at 95% (SL95) from 160.39 to 243.54 mm). Furthermore, in 2013-2018 monitoring activity SPR relatively low and decrease every year, and first at breeding (50% and 95%) also decrease. It means the gonad maturity and SPR could be used as an indicator of fishing pressure and sustainability.
Length-weight relationship of Lingula sp. in Aceh Southern Shore
Authors: Octavina C , Agustina S , Sarong M A , Sari P H P , Sahidin A , Razi N M , Agustiar M , Sakinah R , Fazillah M R 
Published: March 2021

Abstract
The purpose of this study was to determine the growth pattern of Lingula sp. based on its morphometric analysis. The method used in this research is purposive sampling method. he results showed that the number of Lingula sp. less in the Ujong Pancu beach area (66 individuals) when compared to the Syiah Kuala beach area (169 individuals). Based on the weight value of Lingula sp. in the Syiah Kuala area (5,861-7,786 g) it was higher than the Ujong Pancu area (0.082-2.007 g), and the length value was higher in the Syiah Kuala coastal area (39.6-49.4 mm) than the Ujong Pancu beach area ( 19.8-29.6 mm). Besides that, from the calculation of the value of length and body weight, it was found that the value of b at both stations was b> 3 (Ujung pancu, b = 1.9568 and Syiah Kuala, b = 2.896) so that the growth pattern of Lingula sp. classified as negative allometric whereas the length growth is faster than body weight, and the water quality factor in the Ujong Pancu beach area and the Syiah Kuala beach masig are within the normal life limits of Lingula sp.
The distribution of the macro-zoobenthos community based on the characteristics of the mangrove sediments in Aceh Besar
Authors: Sari I P , Sarong M A , Rusdi M , Deli A , Irham M 
Published: March 2021

Abstract
Spatially, the composition of mangrove vegetation and macro-zoobenthos varies due to the characteristics of the sediment substrate in mangrove area. Therefore, the purpose of this study is to analyse the elements contained in the sediments in the mangrove area and to identify macro-zoobenthos species based on the characteristics of the sediment subtract in Peukan Bada and Baitussalam of Aceh Besar district. The method used in this research is the coring method for sediment sampling, while the sediment characteristics analysis was carried out by the sieve method. For the presence of mangroves, the transect method is applied and analysed based on the identification of mangrove species characteristics in the laboratory. Meanwhile, macro-zoobenthos were collected based on mangrove density using hand grabs and sieved at a size of 0.5 mm, then analysis of the dominance and partial correlation between the sediments of the mangrove area and the presence of macro-zoobenthos was carried out. The results show that 89% of the substrate is a muddy fine sand sediment with the dominance of the mangrove species Rhizopora mucronate and Sonneratia alba species. The dominance level of macro-zoobenthos is in the low to high category with a dominance value of 0.47 - 0.88. Furthermore, the partial correlation test for mangroves, macro-zoobenthos and sediment showed that there was a strong relationship between them.
The role of mangrove, seagrass and coral reefs for coral reef fish communities
Authors: Ulumuddin Y I , Prayudha B , Suyarso  , Arafat MY , Indrawati A , Anggraini K 
Published: March 2021

Abstract
We examined the effect of mangrove, seagrass meadows, reef characteristics, and complexity of seascape heterogeneity on reef fish assemblages in Ternate, Natuna and Bintan-Indonesia. The analytical approach of seascape ecology was undertaken, using field survey data of reef fish community and maps of mangrove covers and habitat benthic. The fish data had been collected during reef health monitoring in 2015 through the Coral Reef Rehabilitation and Management Program-Coral Triangle Initiative. Map of benthic habitats and mangroves was provided by Indonesia’s data custodians in 2015-2016. Generalized Additive Models were performed to analyze non-linear and non-monotonic relationships. The results showed that mangroves and seagrasses were essential for reef fishes, and as expected, reef characteristics were also important. Accordingly, the conservations of coral reefs should consider mangrove and seagrass protection and vice versa. Therefore, this information could be considered for managers of marine protected areas (MPA) to better practice MPA management.
Effect of different depth on fish catches in Hajoran Coast of Central Tapanuli District: Case on bamboo platform lift net
Authors: Iqbal T H , Sitompul D P , Rianjuanda D , Miswar E , Salmarika  , Aprilla R M 
Published: March 2021

Abstract
Central Tapanuli Regency is one of the regions in North Sumatra that has fishery potential. In Hajoran, the livelihoods of most people as fishermen are on bamboo platform lift net fishing gear. Bamboo platform lift net is a fishing gear that catches small pelagic fish and is installed permanently. The factor of the installation of a bamboo platform lift net at a different depth will affect the income earned by each fisherman. The purpose of this study was to compare the catches of fish that were predominantly caught on a bamboo platform lift net based on different depths. This research was conducted in February 2020 at Hajoran Village, Central Tapanuli regency in Sibolga City, by using a survey method. Data collection was carried out by directly recording the catches 3 units of bamboo platform lift net and then comparing the three results by using One Way ANOVA analysis. The results showed that the amount of catch per lift net varies, depending on the type of fish and its depth. For pony fishes, species were more commonly found at a depth of 30 M with a total of 5.5 kg, while fringescale sardine and anchovies were found at a depth of 36 M with a total of 10.6 kg and 64.4 kg, respectively. One Way ANOVA revealed that there was a significant difference found on fringescale sardine and ponyfish in term of water depth (p < 0.05), while there was no any significant different on anchovy fish (p < 0.05).
Analysis of catch composition in Gampong Deah Raya, Syiah Kuala, Banda Aceh
Authors: Aprilla R M , Musfidah A , Chaliluddin M A , Damora A , Rusydi I 
Published: March 2021

AbstractGill nets are fishing tools that are commonly found in coastal areas, one of them located in Gampong Deah Raya. Various catches caught by fishermen would most likely affect the aquatic ecosystem. Information on gillnet catches is insufficient yet the needs of the information are most urgent. This study aims to determine the composition and the size of the catch based on Fishbase literature and journals. This study has been done from January until March 2019 in Deah Raya, Syiah Kuala, Banda Aceh. The method used in this research a descriptive survey. The results of this study indicated that there were 31 species of fish caught using gill nets and the total samples obtained during the study were as many as 6048, there were 3 species that frequently captured namely Leiognathus sp., Nemipteru sp., and Selar crumenophthamus, and proper catches as many as 3,381 or 56% and not fit to catch as many as 2,667 or as many as 44%.
What determines aquaculture fish production? empirical evidence from South Aceh Regency, Indonesia
Authors: Muti’ah  , Majid M S A , Seftarita C 
Published: March 2021

Abstract
This study empirically assesses the determinants of aquaculture fish production in South Aceh District using multiple linear regression analysis. The study documented that, except for the number of fish seeds, the factors of land area, the number of workers, and capital had a significant positive effect on aquaculture production. These empirical findings suggest that to improve aquaculture production, fish farmers should possess adequate capital, land area, and the number of workers. The government must assist in providing soft loans by coordinating with provincial government-owned banking institutions, providing sufficient land areas by initiating conversion programs for vacant land into fish ponds. Various free of charges of the training program should be undertaken by the government regularly and continuously to enhance the capacity of aquaculture farmers to produce professional fish farmers who enable to ensure an increase in aquaculture fish production throughout the years.
Does Pawang Laot leadership matter for enhancing fishermen’s work culture and welfare?
Authors: Mahdi I , Lubis A R , Majid M S A 
Published: March 2021

AbstractThis study empirically explores the extent to which leadership style ofPawang Laot(the local traditional fishing masters in Aceh Province, Indonesia) does matter for enhancing the quality of work and its impact on improving fishermen’s welfare and performance. Of 7,623 fishers in South Aceh District, Indonesia, 110 of them were selected as the respondents using a stratified random sampling technique. Using the Structural Equation Modeling (SEM) approach, the study documented that transactional leadership style ofPawang Laothas directly and significantly improved quality of fishermen work culture and performance, but it has an insignificant effect on their welfare. In addition, indirectly, the quality of work culture has an insignificant positive influence on the welfare of fishers through their performance. Finally, the quality of work culture significantly and positively mediated the effect of the leadership style on improving both the welfare and performance of fishers. These findings suggest that further to enhance the welfare and performance of the fishermen,Pawang Laotshould enhance their transactional leadership style focusing on promoting the quality of fishermen’ work culture.
Identification of M2 tidal velocity and energy in the eastern waters of Aceh based on numerical simulation
Authors: Didta P S , Ikhwan M , Haditiar Y , Wafdan R , Muhammad M , Ramli M , Muchlisin Z A , Rizal S 
Published: March 2021

Abstract
The influence of the M2 harmonic component in the waters of East Aceh is more significant than the other components. It is due to the fluctuation in M2 amplitude, which affects the tides. This study aims to compare the model currents velocity simulation results with data from the Geospatial Information Agency and TPXO7.2 and find the tidal energy extraction value of M2. The modeling method used is the non-hydrostatic method. The research location is in Aceh’s eastern waters by taking two research stations, namely Lhokseumawe waters and Langsa waters. The resulting tidal flow velocity in Lhokseumawe waters is 0.8344 m/s, while in Langsa waters, it is 0.8485 m/s. The tidal current strength in Lhokseumawe Waters is 1.2223 x 104 kW and Langsa Waters 1.2854 x 104 kW. Based on these results, Langsa waters have a tidal current speed higher than Lhokseumawe waters, which is 0.0241 m/s, with a tidal current strength of 6.31 x 102 kW. Due to differences in the depth layer or friction movement of the bottom of the waters and the characteristics of Lhokseumawe waters, which are wider than Langsa waters.
The influence of monsoon on mixed layer depth in the northern waters of Aceh in 2017
Authors: Yunita  , Ikhwan M , Haditiar Y , Wafdan R , Setiawan I , Muhammad M , Jalil Z , Chaliluddin M A , Rizal S 
Published: March 2021

AbstractThe research was conducted by considering the values of temperature, mixed layer depth (MLD) as a result of the analysis, and sea-level winds in the waters of North Aceh. MLD was analyzed from the results of the three-dimensional Copernicus marine environment monitoring service (CMEMS) model, which has been validated with sea surface temperature (SST) data from the monthly Aqua MODIS. The results show that SST CMEMS is relatively the same as SST Aqua MODIS with variations up to 2°C. The verification of SST CMEMS data for February, April, August and October showed quite good results with a correlation value of r = 0.8523. Analysis in February, August, and October shows MLD is deepest. MLD in Aceh’s northern waters is 68-91 meters, and Sabang and Krueng Raya waters are 68-79 meters. However, MLD is at its most shallow in April. The waters of North Aceh is 49 meters, Sabang waters is 40 meters, and Krueng Raya is 9 meters. In February, the wind speed occurs in the northeast wind direction with a speed of 3.2 m/s. April and October occur in the direction of the transitional monsoon. The wind speed in April is 2.2 m/s, and October is 2.9 m/s. The southwest wind direction is 4.1 m/s in October. From these results, the influence of the monsoon wind is enormous in the waters of northern Aceh.
Response of tilapia (Oreochromis
niloticus) behaviour to salinity differences: a laboratory scale study
Authors: Fuadi A A , Hasly I R J , Azkia L I , Irham M 
Published: March 2021

Abstract
Tilapia is one of the important commodities of freshwater aquaculture in Indonesia which has good immunity and adaptability. One of the adaptations that can be made by Tilapia is physiological adaptation to a high salinity range. Information on the resistance of Red Tilapia to different salinity on a laboratory scale provides basic information to test the use of Red Tilapia bait as an alternative bait in the Tuna longline fishery. The purpose of this study was to determine the behaviour and mortality rate of Red Tilapia (Oreochromis niloticus) to differences in salinity. This research was conducted at the Laboratory of fish behavior, Bogor Agricultural University in May 2018 with three stages. The first stage is the acclimatization of the test fish in the maintenance aquarium which is carried out in one week. The second stage is to calculate the salinity in water by diluting the desired salinity. The third stage tested the differences in salinity levels on the behavior of the fish in the experimental aquarium. Comparative descriptive statistical analysis was used by comparing Tilapia between various salinity treatments. The random design used in this study was a randomized block design, namely between salinity and the length of time the fish remained in the aquarium. The behaviour of Tilapia during changes in salinity was light stress at salinity 10 and 20 ppt. However, when it rises to 30 ppt the fish are already experiencing severe stress, which is indicated by erratic swimming directions and the number of opercula that are getting slower.
The effectiveness of feeding artemia enriched with vitamin c on the growth performance and survival of Lemeduk fish larvae (Barbonymus schwanenfeldii)
Authors: Mellisa S , Fitria  , Hasri I , Nurfadillah N , Arisa I I 
Published: March 2021

Abstract
The culture of lemeduk fish (Barbonymus schwanenfeldii) still have several obstacles including lack of nutrients in fish diet which causes slow growth rate and low survival. The objective of this study was to analyze the effectiveness of feeding Artemia enriched with vitamin C at different doses on the growth performance and survival of lemeduk fish (Barbonymus schwanenfeldii). This research used completely randomized design method consisting 5 treatments and 3 replications. The treatments tested were Artemia enriched with vitamin C at different doses, namely A (Artemia without vitamin C enrichment), B (Artemia enriched with vitamin C 100 mg/l), C (Artemia enriched with vitamin C 200 mg/l), D (Artemia enriched with vitamin C 300 mg/l) and E (Artemia enriched with vitamin C 400 mg/l). The results showed that the addition of vitamin C in the Artemia had a significant effect (P<0.05) on absolute length growth, daily growth rate and survival of lemeduk fish larvae, but there were no significant effect (P>0.05) on the absolute weight and coefficient of variation. The research showed that the highest value of absolute length growth and daily growth rate were found in treatment D (Artemia enriched with vitamin C 300 mg/l) with an absolute length growth of 6.6±0.48 mm and daily growth rate of 0.330±0.026 mm/day, and the highest survival value was found in treatment C (Artemia enriched with vitamin C 200 mg/l) of 91.7±7.6%.
The assessment of water quality by STORET method in the northern waters of Banda Aceh
Authors: Afriani S , Agustina S , Karina S , Irwan I , Kazrina C S M 
Published: March 2021

Abstract
The STORET method is one of the methods commonly used to determine water quality. This water quality status can indicate the waters are in a polluted condition or in good condition referring to the predetermined water quality standard. This study aims to obtain an overview of the status of water quality in the northern waters of Banda Aceh. Activities in the area such as the transportation route of ships, port activities, tourism, aquaculture and disposal of household waste are source of pollutan in the waters. Water sampling was carried out at 10 points (stations) around the waters of Ulee Lheu, Krueng Aceh and Alue Naga. The parameters used are: ammonia content, sulfide, cyanide, phenol, surfactant, and fatty oil. The results showed that the water quality in Ulee Lheu classify into Class C (score –16), which was medium polluted, with ammonia and phenol content 1.1 mg/L and 0.014 mg/L, respectively. Meanwhile, the estuary of Krueng Aceh and the waters around of Alue Naga are categorized in Class A (score 0), that means both are still in accordance with water quality standards.
Length-weight relationship (LWR) of mud crabs (Scylla sp.) in mangrove waters Peukan Bada Aceh Besar as the basic for waters resources development
Authors: Nurfadillah N , Silvia N , Octavina C , Dewiyanti I , Rizwan T 
Published: March 2021

Abstract
Mud crab (Scylla sp.) is one of the aquatic resources that has high economic value so that the information on length-weight relationships is important for sustainable fisheries management. The objectives of this study were to determine the abundance of mud crab (Scylla sp.), the sex ratio of mud crab (Scylla sp.) and to analyze the length-weight relationship of mud crabs (Scylla sp.). This study was conducted in April 2019. Sampling of mud crabs (Scylla sp.) was carried out by using a bubu crab trap with the random sampling method. The bubu size is in length 47 cm, width 31 cm and height 19 cm. The sampling at ach station was repeated three times during low tide conditions. Sampling location was determined by using the stratified random sampling method. The results of the analysis showed that sampled number of mud crabs (Scylla sp.) in the mangrove waters of Peukan Bada were 90 individu, consisting of 50 ind female mud crabs and 40 ind male mud crabs. Therefore, sex-ratio in mud crabs (Scylla sp.) shows that the sex ratio between male and female individuals is still in a balanced state. The growth pattern were negative allometric (b<3), which means that the growth pattern of carapace length is faster than the body weight of mud crabs. The results also showed that the correlation coefficient (r) values for male and female mud crabs were 0.89 and 0.94, respectively. This indicates a close relationship between length and weight of mud crabs. Environmental parameter factors such as salinity and temperature greatly affect the growth pattern of mud crabs and sex ratio in the mangrove waters Peukan Bada, Aceh Besar.
Molecular diversity of the Soft Coral Lobophytum in Sabang Island
Authors: Kurnianda V , Chabert M M , Firdaus R , ‘Akla C M N , Musman M 
Published: March 2021

Abstract
In our continuous concern of biodiversity relating to molecular structures in Sabang island, we found complex species of soft coral (genus Lobophytum). Molecular phylogenetic analysis on 82 specimens confirmed the presence of Lobophytum crassum, Lobophytum verum, and Lobophytum rigidum. On the other hand, the identification of chemical profiles was performed by spectroscopy analysis based on metabolomics approaches. As a result, we identified the chemical diversity of cembrane-type diterpenoids class from all specimens. Moreover, metabolomics analysis using feature-based molecular networking showed L. crassum, L. verum, and L. rigidum genes poses fundamental roles in the formation of chemical variations. Our results indicated that cembrane-type diterpenoids were found on all species related to genus Lobophytum in Sabang island, located in the western part of the Indonesian archipelago.
Monitoring the seagrass ecosystem using the unmanned aerial vehicle (UAV) in coastal water of Jepara
Authors: Riniatsih I , Ambariyanto A , Yudiati E , Redjeki S , Hartati R 
Published: March 2021

Abstract
Seagrass ecosystem in the world were highly sensitive to environmental changes. They were also in global decline and under threat from a variety of anthropogenic factors and global climate change. There was now an urgency to establish robust monitoring methodologies so that changed in seagrass abundance and distribution in these sensitive coastal environments can be understood. Typical monitoring approaches have included remote sensing from satellites and airborne platform, ground base ecological survey. The techniques can suffer from temporal and spatial inconsistency, or were very localised, making it hard to assess seagrass meadows in a structurer manner. The aim of this research was to present the technique of using a lightweight drone and consumer grade cameras to produce very high spatial resolution mosaic of intertidal site in Bandengan, Jepara waters, Indonesia. The data collection methodologies followed by digitation method techniques to produce coverage estimates, with ground check at location, with data drone analysis. This result showed that digitation method can show between the observed and classified low coverage seagrass 7-12% (<25%) compare to middle coverage seagrass 34-48% (between 25< and <50%), also was able to detect the other biotic features, such as colonies of macroalgae, massive coral, the flat sand and coral rubble at the observation location.