bluuebunny/crossref_metadata_2025_split huggingface dataset:
The Impact of Joint Community Forest Management (PHBM) on Local Community Income in Upstream of Ciliwung Watershed, Bogor Regency-Indonesia
Authors: Veriasa Thomas Oni , Rustiadi Ernan , Kinseng Rilus A 
Published: September 2020

Abstract
Forest area in the upstream of Ciliwung watershed is one of the last remaining forests in the hinterland of Jakarta metropolitan. Forest degradation and the rapid pressure of land use change are serious issues in the Greater Jakarta area that need to be addressed. In 2009, Joint Community Forest Management (PHBM) was initiated by Perum Perhutani in the upstream area of Ciliwung watershed at Kampung Cibulao, Tugu Utara Village, Bogor Regency. This PHBM program involved a forest farmer group in managing village forests, particularly through the management of shade-grown coffee and mountain bike trails. This study investigates the impact of the PHBM program on the local economy improvement using the latest datasets of financial management of forest farmer group in 2017. The aims of this study are to analyse: 1) farmers income from PHBM activities; 2) feasibility of shaded-grown coffee and mountain bike trails activities by using benefit and cost analysis (NPV, IRR, Nett B/C Ratio). The results show that there has been a significant increase of income namey 16.55% or IDR 248,333/hectare/month of cherry and 47.77% or IDR 716,563/hectare/month of green beans. Meanwhile, the management of mountain bike trails has increased the farmers’ income by 32% or IDR 480,000/person/month. The finding of feasibility study shows that Mountain Bike Trails Management is financially not feasible for communal business if it uses the current proportion of business sharing. Therefore, it is necessary to renegotiate the proportion of sharing in order to provide more economic benefits for the local people.
Bird Diversity Patterns along Urbanization Gradients: Some Recommendations for Landscape Planner
Authors: Mardiastuti Ani , Putra M S K , Mulyani Yeni A 
Published: September 2020

Abstract
Birds in an urban area often being used to indicate the quality of the city. The objective of this study was to analyze the response of birds to different intensities of urban-rural change. The high variation of house size and arrangement within housing clusters in the residential area of Sentul City (Bogor, West Java) was used as a model to mimic urbanization gradients in a city landscape. Five housing clusters were selected to represent the degree of urbanization gradients. Build to unbuild land ratio and density of mature trees were used to designate urbanization gradients in the chosen observation sites. Birds were observed using a standard point count method. Bird diversity was the highest in low urbanization (33 species) and diminishing in the higher urbanization grades (15 species). Sites with the highest urbanization rate still able to function as bird habitat, although the species number was low. The persistent bird species against urban-rural were mostly insectivores, nectarivores, and granivores (seed-eaters), while species that we’re unable to cope with urbanization were generally raptors, bush dependent species (e.g. babbler group) and thick canopy dependent species (e.g. green pigeon). The results indicate that (i) there is a negative relationship between degree of urbanization and bird species persistence in urban areas; (ii) efforts for bird conservation should not only focus on regreening but also be directed toward plant functional diversity to accommodate more diverse birds; (iii) urban landscape planner should consider maintaining or creating patch(es) of semi-nature areas as a refuge habitat for birds and other city-persistent species.
The allometric growth and condition index comparison of white shrimp (Litopenaeus vannamei) from fishpond and juata laut waters, Tarakan (Indonesia)
Authors: Salim Gazali , Indarjo Agus , Zein Mufrida , Yudho Prakoso Lukman , Suhirwan  , Achmad Daengs GS , Rukisah  
Published: September 2020

Abstract
This research aims to analyze the allometric growth and condition index of white shrimp (Litopenaeus vannamei) from fishpond and Juata Laut waters, Tarakan (Indonesia). The study was conducted for 3 months, from January to March 2020. The objective method was descriptive quantitative with a case study approach. The determination of the research area by using purposive sampling from fishpond and the catches of trawl fishermen from Juata Laut waters, Tarakan (Indonesia). A sampling of white shrimp (L.vannamei) used survey methods in those two locations. The data collection was done by using a laboratory scale in the Biology Laboratory of Faculty of Fisheries and Marine Science, University of Borneo Tarakan. The data instead of sex, total length, carapace length, and the total weight of white shrimp (L.vannamei). The research variables were sex ratio, allometric growth, and condition index of the male and female white shrimp (L.vannamei). The results study showed that white shrimp (L.vannamei) from ponds had a sex ratio for males and females of 1:3 with a percentage of males by 25% and females by 75%. The allometric growth,i.e.total length, and total weight for both of sex were negative, condition index with a thinner body was not found for male and 1,9% for females; thin body shape was 50% and 53.7%; ideal body shape was 5.6% while females were not found; the fat body was 44.4% and 40.7%; the fatter body for male was not found and females by 3.7%. The results from Juata Laut waters obtained the sex ratio for males and females was 1.68:1 with the percentage of males was 62.71%, and females were 37.29%. The allometric growth like total length and a total weight of males and females was negative with condition index of males and females for thin body shapes were 48.6% and 45.5%; ideal body shape were 2.7% and 9.1%; fat body shape was 45.9% and 45.5%; fatter body shape was 2.7%, respectively and females were not found.
Some population parameters of Longhorn Cowfish Lactoria cornuta (Linnaeus, 1758) in Laikang Bay, Takalar District, South Sulawesi, Indonesia (preliminary study)
Authors: Tresnati J , Dolo R , Suwarni  , Aprianto R , Tuwo A 
Published: September 2020

Abstract
Longhorn cowfish Lactoria cornuta is a boxfish species from the Ostraciidae family which inhabit in Indo-Pacific waters. This fish can reach lengths up to 50 cm. This fish has high economic value and traded as ornamental and fresh fish. Longhorn cowfish is a favorite fish at the seafood restaurants. It is caught by many fishermen in the waters of the Gulf of Laikang. Although of high economic value, Longhorn cowfish has not been studied in many aspects of its bioecology. This study aims to analyze some population parameters, such as sex ratio, length-weight relationship, growth, and ponderal index of longhorn cowfish in Laikang Bay Waters. The results of this study indicate that there was more male than female. The total length range of male was between male 65 - 155 mm, and female was 83 - 250 mm. The range of body weight of the male was 11.84 - 56.85 gr and female was 16.56 - 155.82 gr. Male and female growth curve were hypoalometric. The female ponderal indexwas greater than male.
Decline in seagrass carbon uptake on Bonebatang Island, Spermonde Archipelago, Indonesia during the period of 2001-2017
Authors: Mashoreng S , Isyrini R , Inaku D F 
Published: September 2020

Abstract
The activities of coastal and small islands communities can have an impact on the condition of the adjacent aquatic ecosystems. The magnitude of the impact depends on the type and intensity of the activities carried out. One ecosystem that is prone to be affected is the seagrass ecosystem due to its presence in shallow waters and proximity to the coast. The study was conducted to examine changes in seagrass carbon uptake on Bonebatang Island over a period of 16 years from 2001 to 2017. Estimation of carbon uptake of seven species of seagrasses, i.e., Enhalus acoroides, Thalassia hemprichii, Cymodocea rotundata, Halodule uninervis. Halophila ovalis, Halophila minor, and Syringodium isoetifolium were carried out using the oxygen change method that utilized clear bottles. The percentage of seagrass coverage was calculated using a 50cm x 50cm plot. The average composition of seagrass species from all plots and the capability of each seagrass species to uptake carbon was used as a basis to estimate the capability of seagrass to uptake the carbon per unit area. Changes in carbon uptake were determined using an approach that estimates changes in the seagrass bed areas. Landsat image analysis was used to estimate the area of seagrass in 2001, 2009, and 2017. The results showed that the area of seagrass beds in the period of 2001-2017 decreased by 8.62 ha, from 37.08 ha in 2001 to 28.46 ha in 2017 or decreased by approximately 1.54% per year. As a result of this diminishing in the area, carbon uptake by seagrasses was estimated to decrease by 19.67 MgCO2 per year from 79.62 MgCO2 per year in 2001 to 59.95 MgCO2 per year in 2017. The average decrease in a year reached 1.23 MgCO2.
Fatty acid profiles of Paper Squid (Loligo edulis, Hoyle)
Authors: Apituley D A N , Loppies C R M , Tentua E 
Published: September 2020

Abstract
Squid is one of the fisheries products with high production volume. It has the same characteristics as other fishery products, which is highly perishable in nature. Therefore it is important to optimize squid utilization. Diversification of squid products can be done into value-added products such as paper squid. The aim of this study was to investigate the fatty acids profile contained in paper squid (Loligo edulis, Hoyle). Analysis of fatty acids composition in squid was done by the gas chromatography method. The results showed that the fatty acids detected in paper squid consisted of 10 types of saturated fatty acids, 7 types of monounsaturated fatty acids, and 8 types of polyunsaturated fatty acids. The highest content of saturated fatty acids is palmitic acid, which is 7.45%. The highest content of monounsaturated fatty acid is oleic acid, which is 0.79%. The highest content of polyunsaturated fatty acids is docosahexaenoic acid, which is 22.57%.
Kinetics of quality changes and shelf life estimation of frozen coated Tumpi-Tumpi using accelerated shelf-life testing (ASLT) method with Arrhenius approach
Authors: Syahrul  , Syarief R , Hermanianto J , Nurtama B 
Published: September 2020

Abstract
Quality changes during storage are greatly affected by storage temperatures and food factors. Kinetic quality changes during storage are important to know as one of the parameters in determining the shelf life of a foodstuff. Determination of shelf life can be done by Accelerated Shelf Life Test (ASLT) through a semi-empirical approach with the help of the Arrhenius equation, which is an approach that used kinetics theory which generally has zero-order or first-order reaction for a food product. The kinetics of the frozen coated tumpi-tumpi quality change was assessed by storage at (-10, -5, 0 °C). Observations were made every 7 days until day 35. The quality parameters that were analyzed included the thiobarbituric acid (TBA). This study aims to determine the frozen coated tumpi-tumpi product quality change at various storage temperatures based on the value of TBA and estimation of shelf life. The frozen coated tumpi-tumpi product quality change parameters based on the changes in the TBA were not yet able to determine the zero-order reaction or first-order kinetics. The results of the activation energy (Ea) calculation of the frozen coated tumpi-tumpi product based on the TBA value critical parameter revealed that the lowest activation energy was 8 537 kcal mol−1, causing this parameter to determine the frozen coated tumpi-tumpi product shelf life. The results of the calculation revealed that the higher the frozen coated tumpi-tumpi storage temperature, the shorter the product shelf life is. The shelf life for the frozen coated tumpi-tumpi at a storage temperature of -18 °C was 284 days.
The effect of several types of mangrove exctracs on tiger shrimp Penaeus monodon survival rate challenged with White Spot Syndrome Virus (WSSV)
Authors: Muliani  , Nurbaya  , Ayu Khairanah Kadriah Ince 
Published: September 2020

Abstract
This experiment was aimed to determine the survival rate of tiger shrimp on the use of several types of mangrove extracts challenged with the White Spot Syndrome Virus (WSSV). The experiment was conducted in November 2015 at the Research Institute for brackish water Aquaculture and Fisheries Extension (RIBAFE), Maros. The plastic container of 40 L volume was filled with 30 L of seawater at a salinity of 28 ppt which had been disinfected with chlorine powder of 150 ppm and neutralized with Sodium Thiosufateof 75 ppm, stocked with 10 ind of tiger shrimps with the size of 5-7 g/pcs. The challenge test of mangrove extract with WSSV was done by mixing 5 μL of WSSV suspension with 10 μL of mangrove extract solution (500 mg/100 mL of NTE buffer). The mixing solution was then incubated at 29 oC for 3 hours and then infected to tiger shrimp by intramuscular injection. The experimental design used was Completely Randomized Design with treatments; A). butanol extract of Sonneratia alba; B). butanol extract of Sonneratia caseolaris; C). butanol extract of Sonneratia lanceolata; D). butanol extract of Bruguiera gymnorrhiza; E). diethyl ether extract of S. alba; F). diethyl ether extract of Bruguiera gymnorrhiza; G). Control (shrimps injected with WSSV suspension without mangrove extract. Each treatment was repeated 3 (three) times and tiger shrimp were reared for 10 days. Observations of tiger shrimp mortality were performed daily, while Total Hemocyte Count (THC), Differential Hemocyte Count (DHC), ProPO values and WSSV infection were observed at the end of the study. Analysis of variance, which was followed by Least Significant Difference test were conducted on the survival rate of tiger shrimp. The results showed that over 50% of tiger shrimp relative survival was obtained by the treatment that used butanol extract of S.alba, butanol extract of S.caseolaris, butanol extract of B. gymnorrhiza, and diethyl ether extract of S. alba. These experiments showed that the four extracts of mangrove effectively increased the survival of tiger shrimp. The highest average survival rate of tiger shrimp was obtained by the treatment that used diethyl ether extract of S. alba, while the lowest was found in the positive control, and both treatments were significantly different (P <0.05).The result indicated that diethyl ether extract of S. alba was found to be the most potential extract to control WSSV disease in tiger shrimp.
Sustainability index of the seaweed farmers household economy in Serewe Bay, West Nusa Tenggara, Indonesia
Authors: Zamroni Achmad , Apriliani Tenny , Rosyidah Lathifatul , Muliawan Irwan , Hatanaka Katsumori 
Published: September 2020

Abstract
The economic behavior of household seaweed farmers in Serewe Bay can be a direct or indirect stimulus that affects behavioral changes and increase work productivity. The objectives of this research were: (1) to examine the characteristics of the seaweed farming business; (2) to analyze the economic sustainability index; and (3) Formulating alternative livelihoods strategy for seaweed farming. The study was conducted from February to December 2018 in Serewe Bay, Jerowaru District, East Lombok District, West Nusa Tenggara Province using a structured questionnaire. Data were analyzed using the Sustainable Livelihood Approach as well as financial analysis. The finding shows that about 80% of the people in Serewe Bay utilize coastal resources for marine cultivation. E. cottonii seaweed cultivation dominates in marine and fisheries households. The household economic sustainability index (iKERT) of seaweed farmers in Serewe Village is relatively low (32.56). This is due to the low index of human, financial, and physical capitals, and basic infrastructure facilities for the people in Serewe Village to the marketing area. Therefore, there are main aspects to be concerned to improve household economy sustainability, namely infrastructure, role of local economy institutions, change the mind of seaweed farmers to be smart businessmen, and improving the asset management and investment.
Comparison of propeller thrust based on the purse seiner body shape
Authors: Farhum St Aisjah , Jaya Ilham , Iqbal Quraisyin Muh , Dwiyanti Risa Resky 
Published: September 2020

Abstract
The engine on a fishing vessel is the main equipment that is assembled in a vessel’s machining system. The vessel’s engine, as the main driving force, is coupled with a propeller, which functions to provide thrust to the vessel. The efficiency and effectiveness of the propeller used on fishing vessels depend on the dimensions of the propeller and the type of fishing gear used, as well as the shape and size of the hull. The correlation between vessels, engines, and propellers in vessel planning determines the successful fishing operation. The objective of this study was to examine the geometrical relationship of the purse seine hull to the effectiveness and efficiency of the propeller. The analysis was conducted on nine samples of purse seiner operating in the Flores Sea through numerical simulations. The sample vessel designs were drawn from the vessel offset data using the max surf software to obtain the shape of the hull. Furthermore, the vessel shape specifications were simulated with the propeller technical specifications to obtain propeller efficiency values based on the shape of the hull. The results showed that the pressure value on the propeller used on purse seiners with round bottom was lower than the pressure experienced by the propeller on a U-bottom. Propeller efficiency values were higher on round bottom purse seiners than U-bottom forms. This value illustrates that the propeller thrust was greater in round-bottom vessels. This is probably indicated that the value of resistance on the U-bottom hull form was greater than the round bottom hull shape.
Seasonal changes of potential fishing ground formation for Skipjack Tuna in the Bone Gulf, Indonesia
Authors: Zainuddin Mukti , Hidayat Rachmat , Rani Sahni Putri Andi , Ridwan Muhammad , Safruddin  , Farhum St Aisjah 
Published: September 2020

Abstract
Skipjack tuna (Katsuwonus pelamis) plays an important role by pole and line fishery in the Bone Gulf, Indonesia, since it has a high economic value and wide market acceptance. The purpose of this paper was to assess the seasonal changes of skipjack tuna potential fishing ground in the Bone Gulf. We used pole and line fishery and oceanographic data of sea surface temperature (SST) and chlorophyll-a derived from satellite to figure out the seasonal formation of the potential fishing areas. We developed the spatial model to determine the potential fishing ground based on different levels of oceanographic preferences. The results showed that potential fishing grounds were mostly formed in the first transition season (particularly in May) as well as the west season (especially in November), which have a good association with the specific SST and chlorophyll-a of near 30 Deg C and 0.2 mg m-3, respectively. Most of the potential skipjack fishing ground formation developed along with the specific oceanographic signatures. It was likely that the potential seasonal changes of fishing grounds corresponded with enhanced feeding opportunity distribution pattern for skipjack schools. This suggested that these potential areas play an important for conservation and skipjack fishing management within the study area.
Statistical Characterisation of tropical seagrass bed sediment and adjacent unvegetated sediment in Lae-Lae Island of Makassar (Indonesia)
Authors: Lanuru Mahatma 
Published: September 2020

Abstract
The statistical characteristic of sediment is useful in interpretation of the past or future processes acting on the sediments. This paper reports the statistical characteristic of small island sediment taken from seagrass bed and adjacent unvegetated area. Surface sediment samples were collected from four sites using a sediment corer (PVC pipe with a diameter of 6 cm and a length of 15 cm) and dry sieved in the laboratory to determine grain size distribution. The grain size measurement in mm were converted into the phi (§) unit before calculating the statistical parameters of the sediment including mean grain size, sorting, skewness, and kurtosis using a GRADISTAT (a grain size distribution and statistics package for the analysis of unconsolidated sediments). The results show that both seagrass bed sediments and adjacent unvegetated sediments in the study site are characterized by medium to coarse-grained sand fractions, mostly poorly sorted, symmetrical to very coarse skewed, and have platykurtic, mesokurtic, and leptokurtic kurtosis. These findings highlight the practical use of grain size analysis to classify sedimentary environments and elucidate transport dynamics in the Lae-Lae Island.
Low salinity reduces survival rate of a commercially important sea cucumber (Sandfish: Holothuria scabra)
Authors: Tuwo A , Yasir I , Syafiuddin  , Aprianto R , Yanti A , Bestari A D , Tresnati J 
Published: September 2020

Abstract
Sandfish culture had been implemented for more than 20 years but has frequently failed to yield the expected results due to low survival rates. A decrease in salinity during the rainy season was suspected as a cause of sandfish mortality. This study aimed to assess the influence of salinity on sandfish survival rates. Treatments included sudden shock and gradual acclimation trial methods. Even though the results of this study indicate a mean survival rate of 50% at 14.6 ppt, the survival rate fell drastically as water salinity was reduced below the salinity of saltwater bony fish body fluids (around 18 ppt). Sandfish cannot live in water with salinity lower than the osmotic body fluid of freshwater bony fish (around 14 ppt). Therefore, for the cultivation of sandfish in coastal ponds, salinity should not be allowed to fall below a minimum of 18 ppt.
CBR behavior of sandy soil reinforced by geofiber material
Authors: Mughieda Omer 
Published: September 2020

Abstract
Abu Dhabi sand lacks the required engineering properties to suffice as pavement base course, subbase course, subgrade and as a foundation-support layer under buildings and various structures. Low bearing capacity is manifested on the roadways as differential settlement, waviness and undulations. Stabilization of this type of sand is one of the major geotechnical challenges in practice. In this study the sandy soil was improved by mixing with geofiber. Three different levels of geofiber was added to the sandy soil; 0.1, 0.2 and 0.4% by dry weight of sand. The results showed great increase in shear strength as indicated by the CBR values. The CBR values have increased from 19 to 55 for 0 and 0.4% geofiber content respectively.
Energy efficient, no firing, air binder. Recommendations for the processing of phosphogypsum waste
Authors: Bakhriev N F , Buriboev Sh A , Buriboev A 
Published: September 2020

Abstract
The article presents data on the results of research and processing of phosphogypsum waste from the Samarkand Chemical Plant, over many years stored on a vast territory. Phosphogypsum contains up to 94% contains two water sulfates of calcium, which is the most valuable raw material to produce gypsum binders. However, phosphogypsum contains some chemical compounds that are harmful to human life and for this reason, it is difficult to use in industrial production without neutralization. The article presents the results of research and recommendations for solving this problem.