bluuebunny/crossref_metadata_2025_split huggingface dataset:
Species determination based on head scutes, carapace, and plastron of turtle hatchlings at Boom Beach, Banyuwangi
Authors: Hidayatulloh D R , Dhamayanti Y , Purnama M T E 
Published: April 2021

Abstract
A comprehensive study on the determination of species is important for the turtle conservation program. The external characteristics of turtles were identified based on the pattern of the head scutes, carapace and plastron. This study aimed to investigate the dead hatchling species at Boom Beach, Banyuwangi. Boom Beach is a 3 km stretch of beach in northeast Banyuwangi. We investigated 15 dead hatchlings from 4 different nests. Patrols were carried out all night and morning on the surface of the nest and excavated to collect dead hatchlings. All hatchlings were cleaned of epibion and dried to avoid reflection. The hatchlings were placed on a white table and photographed with a digital camera (Nikon D3100) from above. Figures were taken at a distance of 1 m to reduce the effects of visual distortion. As a result, the pattern of head scutes consisted of more than one pair of prefrontal scales; carapace consisted of six lateral scutes and six vertebral scutes; and plastron consisted of four intramarginal scutes with pores, respectively. It can be concluded that all the dead hatchlings were species of olive ridley turtle (Lepidochelys olivacea).
Effect of differences in cocopeat, hydroton, and husk charcoal as an eggplant planting medium (Solanum melongena) on the absorption of ammonia (NH3), nitrite (NO2) and nitrate (NO3) dumbo catfish (Clarias sp.) water cultivation in aquaponic system
Authors: Putri T A , Prayogo  , Rahardja B S 
Published: April 2021

Abstract
Dumbo catfish known as freshwater commodity which its culturing has been done throughout every region in Indonesia. Compared to other freshwater commodity, dumbo catfish has a fairly higher nutrient content, higher economical value, faster growth and easier maintenance. There are various ways to culture dumbo catfish, one of them is by using aquaponic system, which described as a combination of hydroponic and aquaculture in closed water recirculation system. Aquaponic system uses various type of planting media for filtering water, so that ammonia and nitrite are reduced then modified as nitrate, where nitrate absorbed by plants. This study uses 3 different media: cocopeat, hydroton, and husk charcoal. This study aims to investigate whether three previous media can absorb ammonia, nitrite, and nitrate in dumbo catfish culturing using aquaponic system, also figuring out the most effective one. This study uses RAL method with 4 treatments: control (P0), cocopeat (P1), hydroton (P2), husk charcoal (P3) repeated 5 times. The main parameter are ammonia, nitrite, and nitrate, then analyzed using ANOVA. The result showed 3 different media absorbed ammonia, nitrite, and nitrate significantly, with husk charcoal as the most effective media with ammonia, nitrite, nitrate level 0,59 mg/L, 0,37 mg/L, and 4,99 mg/L respectively.
Women in the coastal area and seaweed farming in Madura, East Java, Indonesia
Authors: Sahidu A M , Made S , Riniwati H 
Published: April 2021

Abstract
This study aimed to 1) analyze the roles and tasks of female seaweed farmers or wives of male seaweed farmers in Sumenep Regency, 2) analyze the factors affecting the roles of those women to increase family income. The research employed quantitative and qualitative methods, using a questionnaire, in-depth interviews, focus group discussions, and observations as the means to collect the data. Most of them worked as day-based laborers for seaweed farming. The average income earned was IDR 585,100/month. The domestic role of female seaweed farmers as housewives included cooking, taking care of the house, taking children to and picking them up from school, caring for children, and managing family finances. Work-hour, educational background, work experience, and the number of children as variables simultaneously affected the wives’ income share on family income. However, work-hour as a variable did not have a significant effect on it.
Fisheries community behaviour towards water quality of the Deket river, Lamongan district
Authors: Saad M , Milad R M , Faiz Y A A , Hikmah N L 
Published: April 2021

Abstract
The river as a water source is one of the natural resources which has a multipurpose function for life, livelihood and also aquaculture. The Deket River is one of the rivers in Lamongan Regency that has experienced a decline in water quality, due to contamination by domestic and industrial waste. This study aims to determine the behaviour, perceptions and attitudes of the fisheries community towards the quality of the waters in the Deket River, Lamongan Regency. This research uses descriptive quantitative and qualitative methods. This research was conducted at 3 stations and 3 sample points for observation of water quality. The lab test results show that the average value of 3 stations still has several parameters that exceed the maximum threshold and are classified as light pollution. Based on the multiple linear regression test, people’s perceptions and attitudes about the decline in water quality affect fisheries community behaviour by 49%. Several water quality parameters caused by domestic and industrial waste have values above the maximum threshold, so they can be an indicator of degradation in water quality. The decline in water quality in the Deket River can affect the behaviour of the fisheries community around the riverbanks
Development of Sustainable Mangrove Areas Based on Empowerment of Coastal Communities in Cemara Beach, Pakis, Banyuwangi, East Java, Indonesia
Authors: Setyaningrum E W , Erwanto Z , Prapti K P , Jayanti A L , Dewi A T K , Susanti H D 
Published: April 2021

Abstract
One of the regencies in East Java Province which has the longest coast is Banyuwangi Regency. One of the potential area to be developed is Cemara Beach in Pakis District Banyuwangi. This Beach has natural resources in the form of pine area, turtle landing and breeding area, and mangrove forests. Mangrove on Cemara Beach were scattered along the river with 11 species. The purposes of area development are mangrove nursery and processing, managing mangrove area into ecotourism, and sustainable coastal area. The methods of area development was approaching to the community, creating activities by encouraging the people to participate and increasing their knowledge about livelihood, so they can arrange the plans for its implementation. Result of the development is that there are mangrove nurseries for three types namely Sonneratia caseolaris, Avicennia dan Rhizophora apiculata. The other results are mangrove’s leaves and fruit which are processed to be mangrove chips, tea, and syrup. Mangrove management into ecotourism by building mangrove tracks, making trash traps so the garbage from the sea does not enter the stream, vice versa when the high is tide. Sustainable coastal development namely thickening mangrove density by planting mangrove from nurseries and creating hardware on the beach in the form of a tetrapod.
Hematology Response of Catfish (Clarias sp.) as an Indicator of Fish Health in Tuban Regency
Authors: Yanuhar U , Raharjo D K W P , Caesar N R , Junirahma N S 
Published: April 2021

Abstract
Catfish farming offers strong potential for community economic growth. Catfish are resistant to various water conditions so that many people cultivate this fish. Just like other fish farming, the disease is the biggest obstacle in catfish farming. Changes in fish haematology in response to stress agents are indicators of the stress stage of fish, yielding useful information for curbing unfavourable conditions that can affect fish health. This study aimed to determine the haematological conditions of catfish in three different locations scattered in Tuban Regency as an indicator of fish health. The method used was descriptive by observing Erythrocytes, Leukocytes, Hemoglobin, and Hematocrit at 3 locations, namely in Tegalagung Village (a), Jenggolo Village (b), and Campurejo Village (c). The results of the erythrocyte at all locations were (a) 540,000 cells/mm3, (b) 1,980,000 cells/mm3, and (c) 1,690,000 cells/mm3. The results of the leukocyte count at all locations showed that (a) 301,000 cells/mm3, (b) 545,500 cells/mm3 and (c) 276,000 cells/mm3. Hemoglobin observations showed at the location (a) 16 g%, (b) 10.1 g% and (c) 10.8 g%. Hematocrit observation results showed at locations (a) 14%, (b) 13% and (c) 15%. Based on those results, it shows that catfish are in abnormal conditions. It is concluded that hematological parameters are outside the normal fish limits.
Analysis of past 26 years landing data to understand the status of Acetes spp. populations in Malaysia
Authors: Stephenie D K , Chen C A , Hassan R , Mustafa S , Shapawi R , Halid N F A 
Published: April 2021

Abstract

Acetes spp. is one of the sergestid species that living mainly in the estuaries and shallow waters of the tropical and subtropical regions. In Malaysia, it is known as ‘Udang Baring’ in Peninsular Malaysia and ‘bubuk’ in Sabah and Sarawak. Acetes shrimp pastes are being produced widely throughout Southeast Asia. Economically, these shrimps contribute to the local in Malaysia as they are commercially being sold as dried, salted or fermented shrimps as part of the local delicacies such as ‘belacan’ and ‘cencaluk’. Data on Acetes landing (1993-2018) was collected from Department of Fisheries of Malaysia (DOFM) and Department of Fisheries Sabah (DOFS). Several missing data from Sabah (DOFM) was replaced by data from DOFS. All data were analysed using Multidimensional Scaling (MDS) and cluster analysis to determine the similarities of Acetes landing throughout the study years. Results of MDS indicate that at 80% similarity, the landing years were clustered into 11 groups. Correlation analysis indicates that three states were negatively correlated with landing years while another three states showed a positive correlation (p< 0.05). The significant increase of landings in early 2000s might due to the government effort in 1996 that had initiated Malaysia’s National Agricultural Policy (NAP) 3 (1998 – 2010). Results showed landings 1990s’ and early 2000s’ were low and all impacted by the climatic events (El Niño, La Niña, or both). In conclusion, the increasing trend in Acetes landings lately potentially show that Acetes industry is getting more recognized in Malaysia even though some states showed a drastic decreasing trend that probably indicates overexploitation which needs further investigation for confirmation.
The effect of CaO doping in activated carbon composite as a heavy metal adsorbent in water
Authors: Rahayu S , Kurniawidi D W , A’yun Q , Alaa S 
Published: April 2021

Abstract
Lead (Pb) is a dangerous heavy metal that can settle in marine animals, and it will have a bad impact on our health. One of the efforts to reduce the stream’s levels of hazardous metals is by using the adsorption method. This study aimed to determine the effect of CaO doping on activated carbon composites on the physical properties of water and its ability to absorb Pb. Atomic Absorption Spectroscopy was conducted to determine the remaining Pb content after the adsorption process. Based on the results, it was found that the doping of CaO in activated carbon composites affected the physical properties of water-based on parameters of pH, EC, TDS, temperature, and turbidity. The water quality test results have met the PerMenKes standard No: 416/MENKES/PER/IX/1990, with the water quality obtained having a pH value of 7, EC 313.00 µs/cm, TDS 156.50 ppm, temperature 29 , and turbidity 3.95 NTU. Besides that, the addition of CaO mass to activated carbon composites affects Pb metal’s adsorption ability, where CaO doping can increase the absorption of Pb.
Transportation costs of different sizes of cantang hybrid grouper (Epinephelus fuscoguttatus ♀ x Epinephelus lanceolatus ♂) fingerlings
Authors: Ismi S , Budi D S 
Published: April 2021

Abstract
Cantang hybrid grouper (Epinephelus fuscoguttatus ♀ x Epinephelus lanceolatus ♂) fry were supplied in many regions in Indonesia through various modes of transportation. The purpose of this study was to evaluate transportation costs against cantang hybrid grouper fry size as consideration for fry users. The research was conducted at one of the grouper hatcheries in Kalianget Village, Banyuglugur District, Situbondo Regency, East Java, Indonesia in December 2019. The hybrid grouper fingerlings were used are 3.0-4.0 cm, 5.0-6.0 cm, 7.0- 8.0 cm, and 9.0-10.0 cm (in total length) were transported from the nursery in Situbondo (East Java, Indonesia) to Medan (North Sumatra, Indonesia) using land and air transportation in 18-20 hours. The results showed that the highest price for grouper fingerlings to the destination was 9.0-10.0 cm of 13,050 IDR and the lowest price for fingerlings of 3.0-4.0 cm of 3,880 IDR. This data can be used as a reference for cantang grouper farmers to determine the most efficient fry size for rearing production.
Diversity studies of freshwater goby species from three rivers ecosystem in Luwuk Banggai, Central Sulawesi, Indonesia
Authors: Gani A , Adam M I , Bakri A A , Adriany D T , Herjayanto Muh. , Nurjirana  , Mangitung S F , Andriyono S 
Published: April 2021

Abstract
Inland public water areas which include freshwater lakes and several rivers in Sulawesi Island have native and endemic fish species which potential as ornamental fish. One of them is a member of Gobiidae. Several studies have reported the species of freshwater goby in Central Sulawesi Province. However, the information is still lacking, especially in the Luwuk Banggai, Central Sulawesi. Therefore, research is needed to examine the diversity of gobies in this area. Observations were conducted in three rivers (Salodik, Kintom, and Simpong). The results of fish inventory in the three Luwuk Banggai rivers obtained 131 fish specimens, namely 26 specimens from the Salodik river, 29 specimens from the Kintom river, and 76 specimens from the Simpong river. The Simpong River has the highest Shannon-Wiener index (H’) followed by the Kintom and Salodik rivers, which are 2.6313, 2.0114, and 1.3656, respectively. Similarity analysis of the three rivers produced 2 clusters. The Salodik River in fish diversity shows differences with the other two rivers, while the Simpong and Kintom rivers are in one cluster. Further research is needed related to the biodiversity of gobies and their relationship to habitat characteristics and river water quality in the Luwuk Banggai.
Biodiversity studies of echinoderms in Sedati waters, Sidoarjo District, East Java Province
Authors: Firmaningrum N F , Sari L A , Pursetyo K T , Zein A , Idris M H , Cahyoko Y 
Published: April 2021

Abstract
Sidoarjo waters is a buffer zone of Surabaya City. Sidoarjo has many industries such as the metal, textile and waste treatment industries. Many industrial wastes are discharged into Sidoarjo waters, especially Sedati. Waste entering the waters can affect water quality, which influences the living things. One of them is echinoderms. This research purpose to find out the differences of echinoderms in Sedati waters. The research was done from October to December 2019. The data obtained were analyzed descriptively quantitatively using the diversity index Shanon Winner and ANOVA. The results showed that the diversity of echinoderms species found has significant differences. Species were found like Archaster typicus, Echinothrix calamaris, and Ophiothrix sp. The average diversity of echinoderms was 0.4119 + 0.1479 (H < 1) so it was classified as low criteria with polluted water quality. The low variation of echinoderms can be caused by several factors such as location, season, physical quality, chemical quality, biotic factors and the fishing gear used. One of the efforts reduces the impact of pollution is to treat waste before it transferred to the release and move the fishing gear used to be more environmentally friendly.
Surviving from shocks of the COVID-19: adaptation strategies of the Sama Bajo Tiworo small scale fishers as a response to the crisis
Authors: Tadjuddah M , Wianti N I , Suriana  , Buana T , Abdullah S , Wunawarsih I A 
Published: April 2021

AbstractThe COVID-19 pandemic has fundamentally changed social-economic life globally with no exception to the small-scale fisher in small islands region. This paper examines how the pandemic effects to the Sama Bajo social-economic life and to observe how theSamaBajo response adaptively to the crisis. The research has been done in July until middle August 2020 in two small islands in Tiworo Straits. By using mix methods both quantitative and qualitative research methods to collect and analyse the data from 12 key informants, the research result shows that the COVID-19 has significant impacts to the blue swimming crab fishing activity andSamaBajo food security in Tiworo Straits. Regarding this, to cover their household consumption of daily basis and to avoid them to fall into chronic poverty, the households built four major adaptation strategies. Interestingly, because of safety first rationality, during the crisis, theSamaBajo pre-existing social insurance tends to be more powerful.
Dinoflagellate cyst assemblages in surface sediment from Jakarta Bay
Authors: Sidabutar T , Srimariana E S 
Published: April 2021

AbstractDinoflagellate cysts play an essential role in the initiation, recurrence and geographical expansion of harmful algal blooms (HABs). The horizontal distribution and abundance of dinoflagellate cysts in marine sediments provide essential information in giving early warnings of the presence of toxic species and possible continuing recurrence of HABs in a given area. This research carried out in the waters of Jakarta Bay. Sediment samples collected from thirteen sampling stations using TFO gravity corer 2.1 cm diameter from sediment thickness 0-4 cm. The results showed that resting cysts belong to Gonyaulax, Alexandrium, Scrippsiella, Protoperidinium, Gymnodinium, Gyrodinium. Two of them, namely Gymnodinium sp and Alexandrium sp, known as toxic species. Cysts in the sediment thickness 0-4 cm mainly dominated by the group of Gonyaulax (Gonyaulacoid). Cyst abundance in the sediment depth-layer 0-2 cm is higher than in depth-layer 2-4 cm. The number of dino-cysts in sediment layer 0-2 cm ranged from 2.984 – 22.298 cysts cm−3while in the layer 2-4 cm the amount varies from 1.063 – 8.132 cysts cm−3of wet sediment. The result revealed that dino-cyst abundance is higher in the deposit collected from locations near to the coast. The assemblages of dinoflagellate resting cysts seemed to have a relation with some hydrological parameters.
The effect of different feeding on growth, feed conversion ratio and feed efficiency in synodontis (Synodontis eupterus) seed
Authors: Nurhadi S , Murniasih S , Dewi N N 
Published: April 2021

AbstractSynodontis fish is a ornamental freshwater fish that has high economic value and is popular with the community because of its upside-down swimming habit. This encourages farmers to increase production output. The resulting production depends on the maintenance method, which starts from the seeding stage. One of the influential factors in hatchery activities include the availability of feed for seed. This research was carried out on December 23, 2019, until January 23, 2020 at Research Institute for Ornamental Fish Culture, Depok, West Java, which aimed to determine the growth, feed conversion ratio and feed efficiency of synodontis fish seed with different feeds. The method used in this study was sampling the length and body weight of the fish which was carried out once a week in 5 aquariums with different feeding treatments. The monitoring results showed that the synodontis fish seed experienced growth (length and weight) every week. However, the given feed was not efficient because it had an FCR value was > 2.0 and an feed efficiency value was <50%. As for the best feed, it is given to synodontis fish seed in the form of natural food (Chironomussp.) which have high value of growth rate.
Design and Implementation of Security Device for Patient Health Monitoring Systems
Authors: Sahu A.K. , Misra N. K. , Kumar D. 
Published: April 2021

Abstract
In continuous upgrading world, humans believe in their self-worth. They have participation in every sector of life, but lives have become so vulnerable these days that the safety and security of their lives are one of the burning questions about this pandemic corona virus disease. Considering all incidents and violation of rules do not spread against humanity this idea of a smart wristband safety device aligned with GPS and GSM modules, with temperature and pulse sensors came into consideration. During dangerous situations user just needs to press the SOS button fitted on the wristband, or the sensors will sense an increase in temperature or pulse rate and then automatically the message of user location tracking via GPS will be sent to the registered numbers through GSM. The main objective is for the device to be light weight and place the SOS switch in an easy accessible region, with additional sensors leaving no worse case possible.
A Review on Land-use and Land-change with Machine Learning Algorithm
Authors: Gupta D , Sethi D , Bathija R 
Published: April 2021

Abstract
A significant proportion of the planet’s ground environment has changed with ground use and land-related shifts, exacerbated by both human behavior and natural feedback. Anthropogenic activities have dramatically altered natural ecosystems, in particular in areas greatly affected by population growth and climate change such as Eastern Africa. For environmental protection and successful water management practices, it is important to be aware of the trends in land use & land cover (LULC). This study centered on developments in LULC patterns in Climate Modelling, remote sensing, and field data combined to identify positive feedback circuits or negative ones using remote sensing techniques and geographic information systems (GIS). Furthermore, its findings include statements that focus on policies that display the impacts and levels of LULC transformation and the dissemination of these improvements in time and space as a central element in the current methods for environmental control of changes and the management of natural resources.
Optimization of thermal oxidation for 4H-SiC and fabricate/characterize MOS capacitor
Authors: Shekhawat Rajesh Singh , Singh Nongthombam Joychandra , Shakil Moh. , Kumar Prashant , Kumar Dhirendra , Kumar Prem , Singh Arvind Kumar , Kothari Prateek , Das Surajit , Prajapat Priyavart , Panwar Deepak Kumar , Kumar Sanjeev , Eshwar T , Singh Sumitra , Singh Dheerendra 
Published: April 2021

Abstract
On the 4H-SiC substrate, C-face and Si-face oxide layers have been grown by thermal oxidation process and sputtering. The thermal oxidation temperature dependence of 4H-silicon carbide (SiC) is systematically investigated using capacitance-voltage (C–V) measurements. The oxidation quality and thickness vary according to the temperature and time duration of the thermal oxidation. The layers’ thicknesses are determined by atomic force microscopy (AFM), and the temperature range is between 800°C and 1110 °C. The primary reason to fabricate the Metal-Oxide-Silicon (MOS) capacitor is to know the thermal oxidation process and a working principle. In this paper, we optimize a thermal oxidation process and fabricate the MOS structure. Then we determine the various parameters such as flat band voltage (Vf
b), Inversion threshold voltage (Vt), Surface depletion capacitance (Cdep), Oxide capacitance (Cox), the total capacitance of the device (Co), doping concentration (Nd), Depletion width (Xd), Maximum depletion width (Xdt) and Interface trap density (Dit). Finally, we analyze and discuss the MOS capacitance.