bluuebunny/crossref_metadata_2025_split huggingface dataset:
Analysis of The Regional Development Level in Aceh Province
Authors: Ramadhan Agus , Sutandi Atang , Pravitasari Andrea Emma 
Published: September 2020

AbstractRegional development level assessment is a way of measuring the level of welfare of an administrative region. This research aims to identify the level of regional economic growth, the level of regional development and clustered region based on the characteristics of the region. The analyses used in this research are Klassen typology, scalogram, entropy diversity index (EDI) and clustering. The results of this study indicate that the region’s economic growth rate in the province of Aceh during the year 2010-2016 amounted to 2.30%. The level of regional development in Aceh province is divided into 3 hierarchies. From 2011-2014, there are 3 regions that have developed to become more developed areas including the following: Banda Aceh City, Langsa City, and Sabang City referred to as Hierarchy I. There is also a negative development trend occurred in Aceh Singkil Regency as it has transformed from Hierarchy II to Hierarchy III. The Province of Aceh has the same level of economic activity in each regency which is dominated by the agricultural sector. Aceh Utara Regency is the region that has the most evenly distributed economic activity, while Sabang City is the region that has the most unequal distribution. Based on the regional characteristics, the cluster analysis in Aceh Province has identified 3 groups including the following: Group I (3 regencies), Group II (11 regencies), and Group III (9 regencies).
The Effect of Agroforestry System on Reducing Soil Erosion in Upstream Ciliwung Watershed
Authors: Rachman L M , Hidayat Y , Tarigan S D , Sitorus S P , Fitri R , Ain A Q 
Published: September 2020

Abstract
Land cover has a big role in determining soil erosion and watershed quality. Watershed quality in a lot of cases is being considered and used in a regional planning. It determines productivity, environmental pollution in a region. Upstream Ciliwung Watershed (UCW) is categorizes as critical watershed. The agroforestry development has great potential to decline soil erosion along with to improve agricultural productivity, environmental sustainability and watershed quality. The objective of this study is to evaluate the effect of agroforestry systems in reducing soil erosion in the UCW. It was found 21 agroforestry types in the UCW. Agroforestry system cannot be automatically expected to prevent soil erosion in the agricultural land and protect the corresponding watershed from destructive soil erosion. Under existing or actual agroforestry types, majority of them (16 types or 76.1 per cent) still have a destructive soil erosion effect. Only five agroforestry types which have EHI lower than 1 and safe from the destructive soil erosion. After applying a set of soil conservation practices, soil erosion of all agroforestry types became lower than E-tol. It shows that improved agroforestry system has a potential and can be used to reduce soil erosion lower than E-tol to maintain watershed quality and support sustainable agriculture.
Assessing the Agreement between Deforestation Maps of Kalimantan from Various Sources
Authors: Suyamto D , Condro AA , Prasetyo LB , Setiawan Y , Wijayanto AK 
Published: September 2020

Abstract
Due to its multiscale impacts, deforestation of tropical rainforests had become a global concern. A number of stakeholders comprising government, research agencies, and NGOs; ranging from local to international levels; have developed their own forest monitoring systems for detecting forest loss. However, discrepancies on deforestation reports from various producers often trigger public debates; which mostly degenerate the productivity of efforts in providing salient, legitimate and credible data on deforestation. Thus, we should reconcile the dispute by acknowledging the deforestation data from all sources. This study assessed the agreement between deforestation maps from various sources. In this case, deforestation maps of Kalimantan within 2009-2013 period from 4 sources were used; i.e. deforestation maps from European Space Agency - Climate Change Initiative (ESA-CCI), Forest Watch Indonesia (FWI), Global Forest Watch (GFW), and Indonesian Ministry of Environment and Forestry (MoEF). We found that the inter-rater agreement between deforestation maps were relatively low, as indicated by Cohen’s kappa (κ), ranging from slight (κ=0.18 between ESA-CCI and GFW) to fair (0.24 ≤ κ ≤ 0.35 for other pairs of sources); due to omission/commission disagreements (47.82% to 87.58%). It suggests that in order to reconcile the dispute, we should remove the omission disagreement by forming the union of deforestation maps. The results from further analyses proved that the union of deforestation maps increased the agreement to moderate (κ=0.44 between union map and FWI) and even substantial (κ=0.79 between union map and GFW). Findings of this study should support the implementation of one map policy.
Species composition and individual abundance of plankton in acid sulfate soil brackishwater ponds in Kotabaru Regency, South Kalimantan Province
Authors: Hasnawi  , Utojo  , Tarunamulia  , Kamariah  
Published: September 2020

Abstract
This study aims to determine the composition of species and individuals abundance of plankton in acid sulfate soil brackishwater ponds in Kotabaru Regency, South Kalimantan Province. The plankton was collected and preserved with 1% Lugol solution and species was identified by microscope and calculated with cell counting methods. Water quality variables measured in situ; temperature, transparency, salinity, DO, and pH, which existed; total organic matter, NO2-N, NO3-N, NH3-N, PO4-P and total suspended solids. The results showed that in acid sulfate soil ponds, were found 8 species of phytoplankton, classified into 4 classes i.e., Bacillariophyceae (4 species), Cyanophyceae (1 species) Dinophyceae (2 species) and Chlorophyceae (1 species) with an abundance of 10-410 ind./L while zooplankton type were found 9 species classified into 2 classes, i.e. Crustaceae (8 species) and Rotatoria (1 species) with an abundance of 14-637 ind./L. The dominant species of phytoplankton is Nitzschia sp from the Bacillariophyceae class with abundance are 482 ind./L, while the zooplankton type dominated by Copepoda sp from the Crustaceae class with an abundance of 583 ind./L. Value of dissolved oxygen, pH, NO3-N and total suspended solids in the pond are increased parallel with the increasing abundance of Nitzschia sp; otherwise, abundance Nitzschia sp decreased with increasing NH3-N. An abundance of Copepoda sp increased in line with increasing value of dissolved oxygen and pH while decreased with high temperature and NH3-N value.
Bacterial diversity in superintensive vanname shrimp aquaculture wastewater treatment plants in Barru and Takalar Regencies
Authors: Tampangallo B R , Idra Jaya Asaad A. , Undu M C , Khairana Kadriah I A , Anshary H. 
Published: September 2020

Abstract
Super intensive wastewater treatment plant (WWTP) is needed to manage wastewater from aquaculture activities before being discharged into the waters. This study aims to determine the diversity of bacterial species in the WWTP super intensive vanname shrimp culture plots located in Barru and Takalar Regencies. The research method was designed by using a survey method in the WWTP super-intensive shrimp cultivation plot in Lajange Village, Mallusetasi District, Barru Regency, and Punanga Village, Takalar Regency. Sampling of DNA from water was carried out every two weeks for one culture cycle by filtering water from the WWTP outlet. The samples obtained were then DNA-extracted using cTAB dTAB DNA extraction kit (Iq2000). Quality of the DNA obtained was measured and analyzed using a genquan machine. Next Generation Sequencing (NGS) analysis was carried out by sending the DNA samples to a commercial company (Genetics Science laboratory) for the analysis. The results showed that the highest relative diversity of samples from Barru was 60% unidentified, followed by vibrio, unidentified Chloroplast, Arcobacter, Pseudoalteromonas, Marinobacterium, Marivita, Thalassatolea, Phaeodactylibacter, and Thalassalituus. Likewise, the relative diversity of bacteria from Takalary originating from Takalar, the highest was also not identified, followed by Pseudoalteromonas, unidentified_Chloroplast, Vibrio, Marivita, Thalassotalea, Phaedactylibacter, Thalassolituus, Arcobacter, and Tenacibaculum. It appears that the types of bacteria from the two sampling locations are still quite diverse and found probiotic bacteria, Pseudoalteromonas, that are commonly used in the cultivation of vanname shrimp in both WWTP plots.
Interannual sex ratio and maturity of Indian parrotfish Chlorurus capistratoidesBleeker, 1847 in Wallace line at Spermonde Archipelago
Authors: Tuwo A , Rahmani P Y , Samad W , Lanuru M , Husain A A A , Yasir I , Yanti A , Aprianto R , Tresnati J 
Published: September 2020

Abstract
Indian parrotfish Chlorurus capistratoides live in abundance in the Indo-Pacific region. Indian parrotfish is one of seven new species found in Indonesian waters, one of 34 species of economically important parrotfish caught in the waters of Spermonde, South Sulawesi. This study aims to examine the sex ratio, gonad maturity stage, and the size at first maturity of Indian parrotfish. This research was carried out in 2014 and 2019, using samples of Indian parrotfish from the waters of the Spermonde Islands, landed by fishermen in Rajawali Makassar Fisheries Port, Makassar city. Indian parrotfish sex ratio was not balanced between male and female fish. This imbalance was covered up by the synchrony of maturity stages of the female and male. This synchrony could increase the success of the fertilization process. This synchrony explains why the population of Indian parrotfish was always there, even unbalanced in sex ratio, and because males can produce enough sperm to fertilize the eggs produced by several females. The relatively same reproduction parameters in 2014 and 2019 indicated that the reproductive parameters of Indian parrotfish had not been affected by different environmental factors of the two different years that differ in 5 years.
Analysis of allometric growth and condition index of tiger shrimp (Penaeus monodon) in Juata Laut Waters and Fishpond, Tarakan (Indonesia)
Authors: Salim Gazali , Indarjo Agus , Zein Mufrida , Yudho Prakoso Lukman , Suhirwan  , Achmad Daengs GS , Rukisah  , Bija Stephanie 
Published: September 2020

Abstract
The purposes of this research were to analyze the growth of allometric and condition index of tiger shrimp (P.monodon) in Juata Laut waters and fishpond, Tarakan (Indonesia). The implementation of research for 3 months from January to March 2020. The research method used a quantitative descriptive with a case study and exploratory approach. The determination of the study area was done with purposive judgment sampling originating from the catch of trawl fishermen in Juata Laut waters and fishpond, Tarakan (Indonesia). A sampling of tiger shrimp (P.monodon) based on surveys of the catches from those two locations. The data collection method involved the differences between sex, total length, carapace length, and the total weight of tiger shrimp (P.monodon) in the Laboratory of Fisheries Biology, Faculty of Fisheries and Marine Science, University of Borneo Tarakan. The research variables were sex ratio, allometric growth, and condition index of male and female tiger shrimp. The results from Juata Laut waters obtained a sex ratio for males and females was 2:1 with a percentage of the male at 66.7% and female at 33.3%. The allometric growth, i.e., a total length and a total weight of male was positive and female was negative with a condition index of male and female for thin body shape was 56.3% and 50%; ideal body shape of 12.5% and female not found; fat body shape was 31.3% and 50%, respectively. The results from fishpond showed that the sex ratio for males and females was 1:1.52, with a percentage of 39.6% for males and females was 60.4%. The allometric growth of total length and total weight from the male was negative and female was positive with condition index of a male was 2.4% and female was not found; the thin body shapes was 32.7% and 48.4%; the ideal body of 2.4% and 1.6%; the fat body was 57.1% and 50% for each one; very fat body was 2.4% and female was not found.
Distribution and characteristics of Asian seabass (Lates calcarifer Bloch, 1790) in South Sulawesi
Authors: Irmawati Irmawati , Umar Moh. Tauhid , Ambo Ala Husain Aidah , Citra Malina Asmi , Nurdin Kadir Nadiarti , Alimuddin Alimuddin 
Published: September 2020

Abstract
The Asian seabass, Lates calcarifer (Perciformes, Latidae), known as barramundi in Australia, as salamata and bale kanja in South Sulawesi, was first described by Bloch in 1790 under the name Holocentrus calcarifer. The euryhaline L. calcarifer is a high-value marine and freshwater fish, on a par with salmon and tuna. This species has a widespread distribution, but there has been a lack of research on the distribution and identification of the genus Lates in Indonesia, including in South Sulawesi. This research aimed to track the distribution of Asia seabass in South Sulawesi (Makassar Strait, Gulf of Bone and Flores Sea) with identification based on DNA barcoding and characterization based on morphological parameters. The results show that Asian seabass can be found from Takalar to Pinrang Regency in the Makassar Strait, along the coast of Bone Bay from Bone to Luwu Regency, and from Bantaeng Regency to Selayar Island. Nucleotide sequences of COI mtDNA representing four Asian seabass populations in the Makassar Strait and Gulf of Bone had 99.12-99.41% identity with Lates calcarifer sequences from Singapore, Malaysia and Australia (query cover 99-100%). L. calcarifer captured at Cenrana in Bone District had a distinctive silvery-yellowish-white colouring, unlike the silvery-greenish-white observed at the other sites. Body depth (BD) of L. calcarifer was 30.10-32.20% SL and on average caudal peduncle depth was 45.65 % BD. There were several morphological differences between L. calcarifer in this study and L. calcarifer from Thailand: dorsal spine and ray counts, anal ray count, and number of vertebrae.
Improving the quality of tridacnid clam juveniles through crossbreeding broodstock from different zones across the Spermonde Archipelago
Authors: Niartiningsih A , Nessa M N , Yusuf S 
Published: September 2020

AbstractTridacnid clam populations have declined, and they are considered as endangered. There is increasing concern over their status in the Spermonde archipelago, South Sulawesi, where some species can no longer be found, including larger species such asTridacna gigasandT. derasaas well as the shallow-water clamHippopus hippopus. This research aimed to produce high-quality juvenile tridacnid clams by crossbreeding distantly related broodstock from different zones as a contribution to the effective conservation of endangered species. The research was conducted in the Spermonde archipelago and at the Hasanuddin University Marine Station Hatchery in Barrang Lompo Island. Broodstock ofT derasaandT. squamosawere collected from zones III and IV of the Spermonde Archipelago. Juvenile clam production followed established methods for inducing spawning and larval rearing through trocophore, veliger, and pediveliger stages to produce juveniles that were reared in land-based and ocean nurseries. Parameters measured were the juvenile survival rate and the quality of zooxanthellae (density, chlorophyll content, and mitotic index). Data were analyzed descriptively. The mean density of zooxanthellae in juvenile clams was 3.17 x 106 cells/ind (range 3.15x106 - 5.27x106 cells/in). The mean chlorophyll-a content of these zooxanthellae was 2.7 mg/m3 (range 1.1 mg/m3 - 4.1 mg/m3), which is consistent with the mean phaeopigment concentration of 5.5 mg/m3 (range 4.2 mg/m3 - 6.2 mg/m). The mitotic index peaked at 8.5% between 09:00 and 12:00.
Growth pattern, condition factor and sex ratio of Grey Reef Shark Carcharhinus amblyrhynchos (Bleeker,1856) in Makassar Strait
Authors: Rapi N L , Mallawa A , Tresnati J , Amir F 
Published: September 2020

Abstract
Shark has been a sought-after species by fishermen due to its high economic value in the International market. It has increased shark’s fishing pressure on its wild population. Local fishermen are more likely to catch a grey reef shark rather than other fish commodities. The present study aimed to describe the length and weight relationships (LWRs), growth pattern, and sex ratio of Grey Reef Shark shark Carcharhinus amblyrhynchos (Bleeker, 1856) caught in Makassar Strait. Sampling was conducted from September to November 2019. The results showed that the total length of sharks caught ranged between 18 cm - 235 cm and weight between 1 kg - 120 kg. The growth pattern of the graceful shark was negative allometric growth, and the relative condition factors for males and females were 0.3131 - 2.4813 and 0.2965 - 1.6244, respectively. The sex ratio between males and females was 1:1.33.
Proportion of HABs in Losari coastal waters of Makassar
Authors: Tambaru R , Nafie Y A L , Junaidi A W 
Published: September 2020

Abstract
Harmful alga blooms (HABs) are phytoplankton considered dangerous in any waters, especially when found in a large number of cells. Research on the proportion of the emergence of harmful phytoplankton (HABs) had been conducted in June until December 2018 in the coastal waters of Losari Beach, Makassar City. The method developed by APHA was used to analyze the appearance of HABs, then a proportion test. Results showed that there were seven genera detected by HABs, namely Protoperidinium, Gymnodinium, Ceratium, Prorocentrum, Gyrodinium, Gonyaulax, and Dinophysis. All genera were groups of Dinophyceae. Based on the proportion test, HABs gained 41%. This means the percentage of HABs was still low in abundance when compared to a non-HABs type. Thus, the water condition of Losari has not been worrying. However, early preventive measures have to be taken into account to prevent the growth of HABs.
Characteristics and management of brackishwater pond soil in South Sulawesi Province, Indonesia
Authors: Mustafa Akhmad , Ratnawati Erna , Chaidir Undu Muhammad 
Published: September 2020

AbstractSoil quality is one of the factors that determine the success and sustainability of aquaculture pond, including farms in South Sulawesi Province. Research Institute for Coastal Aquaculture and Fisheries Extension has conducted research on various aspects of brackishwater pond soil in Maros District and previously also in nine other districts in South Sulawesi Province. Brackishwater pond soil characteristics are summarized and reviewed to determine soil management so that brackishwater pond productivity can be improved. Brackishwater pond soil in the west coast of South Sulawesi Province, including Maros, Pangkep and Pinrang Districts, is dominated by acid sulfate soil (ASS) and non-acid sulfate soil (non-ASS); in the south coast of South Sulawesi (Bulukumba, Selayar Islands and Takalar Districts) the brackish water pond is soil dominated by non-ASS, and in the east coast South Sulawesi (East Luwu, North Luwu, Luwu and Bone Districts) is dominated by ASS and peat soil. ASS is characterized by soil characteristics such as low pH, high acidity potential and highly-toxic element content. Peat soil is characterized by high organic matter content, low pH and high acidity potential. Non-ASS is characterized by high pH, low acidity potential and low macro-nutrient content. Dominant soil textures of brackishwater pond in the South Sulawesi Province include sandy loam, loamy sand, clay loam and silty clay loam. To improve the quality of ASS, soil management is needed in the form of remediation by drying, submerging and flushing as well as liming. The quality of peat soil can be improved through remediation and fertilization, especially fertilizers containing nitrogen. Fertilization using both organic and inorganic fertilizers as well as using sulfur and gypsum, can improve the quality of non-ASS, including saline-sodic soil.
Rabbitfish (Siganus guttatus) culture in floating net cage with different stocking densities
Authors: Syah Rachman , Makmur  , Tampangallo B R , Undu M C , Asaad A I J , Laining Asda 
Published: September 2020

AbstractRabbitfish (Siganus guttatus) is a schooling species which potential for being farmed in high density, however the information about stocking density of this species remain rare. This study was aimed to evaluate growth, survival rate, FCR, stress level and osmoregulation of Rabbitfish under different stocking densities. The tested fishes were the second generation (G2) of Rabbitfish that produced by hatchery outdoor of Research Institute of Coastal Aquaculture and Fisheries Extension, Maros, Indonesia. There were two stages of this study: the first stage was fingerling production. The seeds of Rabbitfish with average of length 6.2±0.8 cm and body weight 4.7±1.9 g/ind were reared in total of 12 units of 1 x 1 x 1 m3floating net cage for 90 days. The stocking densities were 50, 100, 150 and 200 ind/m3. The second stage of this study was fish growing, where the tested fishes were cultivated with stocking density of 100, 150 and 200 ind/m3in the same size of net as the first stage. The result of first stage showed that stocking density did not significantly affect growth rate of Rabbitfish fingerling. However, survival rate at stocking density of 50 (99.33±1.15%) and 100 ind/m3(98,33±0,58%) were higher compared to stocking densities 150 and 200 ind/m3(94.89±1.39 and 93.50±2.65%, respectively). The result of second stage showed that stocking density of 100 ind/m3resulted significant growth, survival rate and FCR compared to that observed on 150 and 200 ind/m3. The fish stocked with density of 100 ind/m3had length (18.6±0.3 cm), weigh (121.8±9.8 g/ind.), survival rate (92.0±2.6%) and FCR (4,41±0,43). Whereas, the result for fish stocked with 150 ind/m3were 17.6±0.3 cm, 107.1±7.0 gram, 86.2±7.1 % and 5.15±0.59, respectively, and 200 ind/m3were 16.9±0.2 cm, 96.5±5.9 gram, 82.2±2.3 % and 5,64±0,6, respectively. High stocking density might trigger stress on Rabbitfish and lower blood osmolality found on stocking density of 150 ind/m3(490.00±59.77 mOsm/kg) and 200 ind/m3(469.00±23.30 mOsm/kg) compared to that observed on density of 100 ind/m3(501.67±23.50 mosm/kg). During hypo-osmotic condition, the osmoregulation was not regulated by stocking density as indicated by blood osmotic performance levels <1, which was 0.37 mOsm/kg (100 ind/m3) and 0.33 mOsm/kg (for 150 and 200 ind/m3).