bluuebunny/crossref_metadata_2025_split huggingface dataset:
Perspectives on seagrass ecosystem services from a coastal community
Authors: Ambo-Rappe R , La Nafie Y A. , Marimba A A , Cullen-Unsworth L C. , Unsworth R K. 
Published: December 2019

Abstract
Seagrasses are marine flowering plants, which form extensive meadows mostly in shallow water marine environments. They provide a wide range of ecosystem services, which can be grouped into four broad categories: provisioning (e.g. food production); regulating (e.g. controlling climate and disease); supporting (e.g. nutrient cycles and oxygenation); and cultural (e.g. spiritual and recreational benefits). These services directly or indirectly benefit humans. Seagrass have contributed to the fulfilment of human needs for a very long time, before the term “ecosystem services” was coined. However, there is a lack of knowledge regarding public awareness on seagrasses and the benefits they provide. In this study, we conducted a workshop in Selayar Archipelago, South Sulawesi, Indonesia, an area with extensive seagrass meadows. The workshop focussed on seagrass meadows in the context of coastal community livelihood-related activities. The 50 workshop participants came from a variety of backgrounds, mostly related to the marine and fisheries sector (e.g. fishermen, vocational high school students, conservation agency staff, district government fisheries officers, and fisheries extension staff). The workshop revealed that many marine and fisheries stakeholders have a high level of awareness regarding seagrasses and the basic ecosystem services they provide. Some key points were identified from the workshop: 1) seagrasses were recognised as a resource; 2) the most and least frequently mentioned ecosystem service types mentioned were “provisioning” and “cultural”, respectively; 3) threats to seagrass meadows were identified and practical recommendations to minimize the threats were formulated.
Design Viability of Purse Seiners Operating in Bone Regency, South Sulawesi, Indonesia
Authors: Farhum S A , Zainuddin M , Nelwan A F P , Pangera A A , Risa R D 
Published: December 2019

Abstract
The success of fishing operations is influenced by various factors that interact with each other, one of which is the fishing vessel. Purse seine fisheries make a substantial contribution to capture fisheries in much of eastern Indonesia, including the seas around Sulawesi. Purse seiners must conform to standard criteria to ensure the success of the catch. Therefore, this study aimed to explore the design viability of purse seiners operating from Bone Regency in South Sulawesi. This study evaluated four purse seiner vessels, measuring the main dimensions and curvature of the vessels to obtain vessel offset data. The data obtained were analysed using the Maxsurf V8.20i program to produce line drawings and calculate the three-dimensional (3D) hydrostatic and stability properties of the vessels. These were used to evaluate the design viability based on compatibility with standard criteria. The purse seiners operating in Bone Regency had a casco hull type design, with V-bottom bow sections and U-bottom stern sections. The vessels had a large cross-sectional area which allowed considerable space for the placement of the purse seine net and fishing catch. The ratio of the main dimensions and hydrostatic parameters of the sample vessels did not match the standard criteria for purse seine vessels. However, the results obtained for the static stability of the sampled vessels did meet standards that are in accordance with the criteria of the International Maritime Organization.
Livelihood Features of Seaweed Farming Households: A Case study from Bungin Permai Village, South Konawe, South East (SE) Sulawesi, Indonesia
Authors: Rahim M , Aslan L O M , Ruslaini  , Taridala S A A , Wianti N I , Nikoyan A , Budiyanto  , Hafid H 
Published: December 2019

Abstract
The aim of this study was to analyse the variations and structure of seaweed farming household incomes; to quantify the income coming from various income sources and to analyse the efficiency of seaweed farming. The study was conducted in the village of Bungin Permai, South Konawe from July to September 2016 using structured interviews. In total there were 96 household respondents involved. Income structures and strategies were analysed descriptively, while the amount of income was determined using income analysis. The results showed that most respondents worked in the fisheries sector as seaweed farmers (n=75; 77%) and also as fishermen. The average income generated by seaweed farming households was IDR. 29,154,121 annually; the income from seaweed farming was IDR. 10,556,724 annually, while the income obtained from non-fishing activities was IDR. 11,071,875 annually. The respondents generated additional income by catching crabs, fishing using traps and anchored lift nets (bagan). When all the depreciated assets (e.g. ropes, floats, and traditional boats) were included in the expenses, the mean C/R (cost-to-revenue) value of seaweed farming was 1.88. The lowest R/C was 0.96 while the highest was 21.04. Those R/C values mean that seaweed faming in Bungin Permai was generally efficient and profitable.
Structural relationship among steroids from Sulawesi Tenggara’s sponge Clathria sp. and their radical scavenger activity
Authors: Sahidin I , Sadarun Baru , Aslan La Ode M. , Wahyuni  , Hajrul Malaka M. , Fristiohady Adryan 
Published: December 2019

Abstract
Four steroids were isolated and identified from the acetone extract of Clathria sp., namely clathruhoate or 3β-(butiryloxymethyl)-A-nor-5α-cholestane (1), 3β-(acetoxymethyl)-A-nor-5α-cholestane (2), 3β-(hydroxymethyl)-A-nor-5α-cholestane (3), and 3β-(hydroxymethyl)-A-nor-5α-cholest-15-ene (4). Isolation was carried out using chromatography techniques including Thin Layer Chromatography (TLC), vacuum liquid chromatography (VLC) and radial chromatography (RC) with silica gel as adsorbent and mixture of solvents as eluent. The Structure of isolated compounds was determined by spectroscopic methods i.e. FTIR, 1H and 13C NMR and also by comparing the spectroscopic data with similar data from references. The compounds isolated were evaluated for biological activity against a radical agent (DPPH radical). The relationship of the steroids showed that compound 3 is an oxidation product of compound 4. Clathruhoate (1) is formed by esterification of compound 3 with buthanoic acid, and compound 2 is produced by esterification of compound 3 with acetic acid. The radical scavenger potential of the methanol extract and steroids from Clathria sp. can be summarized as follows: methanol extracts > compound 4 > compound 3 > compound 2 > compound 1.
Chemical composition and antibacterial activity of honey collected from East Nusa Tenggara, Indonesia on pathogenic bacteria in aquaculture
Authors: Salosso Y 
Published: December 2019

Abstract
The objectives of this research were to investigate the chemical composition and the antibacterial activity of honey from East Nusa Tenggara, produced by Trigona spp., on pathogenic bacteria in fish. The honey used in this research was collected specifically from Semau and Timor Islands while Aeromonas hydrophila and Vibrio alginoliticus were used as the testing bacteria. The chemical composition tests included moisture content (gravimetric), pH, total sugar (spectrophotometric). The honey was tested for the presence of the following active compounds: alkaloids, flavonoids, tanin, saponins, steroids and terpenoids. Antibacterial activity tests were conducted using “paper disk” method with undiluted honey samples. The moisture content of the Semau honey (33 %) was higher than that of the Timor honey (24.65 %), but the total sugar of the Semau honey ( 6.62 %) was lower than that of the Timor honey (74.22%). All honey from both sources (Semau and Timor) in East Nusa Tenggara contained alkaloids, steroids and terpenoids but did not contain flavonoids, tannins and saponins. Antibacterial tests showed that the honey from both sources, Semau and Timor, showed antibacterial activity against V. Alginoliticus and A. hydrophila; the V. alginolitycus inhibition zone diameters were 8.5 mm and 10.5 mm, respectively, while and the A. hydrophila inhibition zone diameter was 8 mm for both honeys.
Analysis of biological aspects of Scottish seine net catches in Mamuju waters, West Sulawesi
Authors: Najamuddin  , Palo M , Assir A , Asni A , Busman  
Published: December 2019

Abstract
The decree of the Minister of Maritime Affairs and Fisheries No. 2 of 2015 has disturbed many fishermen in Indonesia, including Scottish seine fishermen. In that decree, the government concludes that the Scottish seine is not selective in catching fish and tends to disrupt the sustainability of small pelagic fish resources. This study aimed to analyse the biological aspects of fish caught with Scottish seine nets during the west monsoon season in the waters of Mamuju, South Sulawesi, Indonesia. The study was carried out from January to March 2016 with a case study of 1 unit during 30 fishing trips. The data collected included the type of fish caught, the weight and length of each fish by species. Data on fish taxa and size were analysed graphically and descriptively. The composition of the fish caught during the study was: shortfin scads (38%), bigeye scads (18%), sardines (14%), mackerel tuna (9%), Indian mackerel (7%), torpedo scads (6%), white trevally (3%), and other species (5 %). The length of shortfin scads, bigeye scads, sardinella, and mackerel tuna ranged from 9.9 - 18.2 cm; 8.5 - 19.5 cm; 10 - 12.5 cm; and 10-15 cm, respectively. In general, the fish caught were still classified as immature and not suitable for capture. To support sustainable fishing, it is necessary to limit fishing in the period from January to March.
The effect of initial weight of seedlings grafted from tissue-cultured and local strain seedlings on growth and carrageenan content of the Red Seaweed (Kappaphycus alvarezii) using a grafting method
Authors: Embi A L , Aslan L O M , Iba W , Patadjai A B , Sulistiani E 
Published: December 2019

Abstract
A grafting experiment using tissue-cultured and local strain Kappaphycus alvarezii seedlings was conducted from January to April 2019 and consisted of two steps. Firstly, grafting and propagating the seedlings using three different initial weights (IW) of 10, 15 and 20 g. Secondly, a culture experiment using the new seedlings produced from the first step. Seedlings were completely attached to each other after 18 days following the first step with a mean 75.0% grafting rate. The new seedlings were then cultured for 45 days using a long line method. The highest daily growth rate (DGR) was 4.36 %.day-1 obtained from 20-g IW while the lowest DGR was 4.01%.day-1 from 15-g IW. It was found that rapid changes in water salinity and turbidity may affect the success in terms of grafting rate and DGR. The ratio of fresh weight (FW) to dry weight (FW:DW) showed no significant differences among treatments although the 20-g IW showed the highest FW:DW ratio (8.21: 1) followed by 15-g IW (7.87:10) and 10-g IW (6.63:1). In contrast, 10-g IW and 15-g IW showed a significant difference in term of carrageenan content from 20-g IW. The 10-g IW carrageenan content was highest (40.38%) followed by 15-g IW (40.25%) and 20-g IW (38.34%). Salinity was 24-32 ppt, temperature was 29-31 °C. Nitrate and phosphate were 0.324-0.420 mg.l-1 and 0.180-0.538 ppm, respectively, while turbidity range was 3,128-9,336 NTU. In conclusion, for this method of grafting, it is recommended to use 20-g initial weight.
Evisceration rate of sandfish Holothuria scabra during transportation
Authors: Tuwo A , Yasir I , Tresnati J , Aprianto R , Yanti A , Bestari A D , Syafiuddin  , Nakajima M 
Published: December 2019

Abstract
The sandfish Holothuria scabra is a benthic animal of high ecological and economic value. The high economic value of sandfish has led to declining populations due to overfishing. Initiatives to improve sandfish production have included restocking, sea-ranching and aquaculture (captive breeding and grow-out). These initiatives require a supply of animals (seed and/or broodstock) that often originate far from the location where they are needed. This calls for a good transportation system so that the sandfish arrive in good condition. This study aimed to assess the evisceration rate of sandfish transported using open and closed transportation modes. During the study, different modes of packing, density, transportation time, and holding time were evaluated. This study indicated that delivery using open systems gave poor results; besides being less practical, post-transport evisceration was very high. The ratio of oxygen and water and the packing density did not appear to affect the sandfish evisceration rate. Evisceration seemed to be triggered by the presence of dead and decaying sandfish in the bag. Sandfish that survived transportation generally recovered swiftly after being placed in a pre-prepared holding tank. The transported sandfish were used for multitrophic aquaculture and the post-transport survival ratio was very high.
Water bird habitat suitability analysis in an urban coastal wetland (case study: Lantebung mangrove ecotourism area)
Authors: Purify A , Nurdin N , Maulani R I , Lanuru M 
Published: December 2019

Abstract
Water birds are significant wildlife in mangrove ecosystem. These aquatic birds have prominent roles for the integrity of the ecosystem. This research aimed to analyse water birds habitat suitability level at Lantebung Mangrove Ecotourism Area in Makassar, South Sulawesi, Indonesia. Geography Information System (GIS) and remote sensing approaches were employed in this study. Eight parameters were used for water bird habitat suitability assessment: land type, food class, water level, human disturbance, salinity, pH, dissolved oxygen, and temperature. All data parameters other than land type were interpolated using Inverse Distance Weighted Interpolation (IDW) in ArcGIS 10.5. Meanwhile, land types were digitized on-screen using Landsat 8 imagery (acquisition October 2018), based on GPS field tracking. The suitability assessment was done by weighted overlay analysis, based on the scoring and weighting of each layer. The results showed that the area suitable for water bird habitat at Lantebung Mangrove Ecotourism Area was approximately 44 ha or 51.2% from the total area. The majority of suitable area consisted of mangrove forest, mudflat in front of mangrove forest, and mudflat behind mangrove forest. Further sustainable effort is needed to manage the available habitats, so that water bird population can be conserved.
Biodiversity of lobster larvae (Panulirus spp.) from the Indonesian Eastern Indian Ocean
Authors: Setyanto A , Soemarno  , Wiadnya D G R , Prayogo C 
Published: December 2019

AbstractLobster fisheries play an important role in the development of Indonesian fisheries management. The tropical lobster genusPanulirushas high species diversity in the Indonesian Eastern Indian Ocean. The Indonesian government has designated lobster fisheries as one of the types of fisheries requiring special attention in 11 of the Fisheries Management Areas in the Republic of Indonesia (FMARI). Each management area has specific ecological characteristics and may have unique lobster species richness. Studies on the temporal and spatial distribution of lobster species during all life phases are necessary to determine the connectivity of lobster populations. This study aimed to identify the species of lobster larvae of the genusPanulirusin FMARI 573. Samples were collected from several locations, including Pacitan, Trenggalek, Tulungagung, Banyuwangi, and Lombok, in July-August 2018. Data were analysed descriptively through species identification based on morphological traits. Identification of the samples was carried out at the sampling site and in the laboratory. The study found six species of lobster larvae:Panulirus ornatus(local nameudang mutiara),P. homarus(udang pasir),P. penicillatus(udang batu),P. versicolor(udang bambu),P. longipes(udang batik) andP. polyphagus(udang Pakistan). These species were unevenly distributed at the study sites. Further research is needed to analyse the distribution and connectivity of lobster populations by analysing species composition during different life phases (larva/puerulus, juvenile, adult) at different spatial and temporal scales.
The association of economically important fish with mangroves in Maumere Bay, Indonesia
Authors: Vincentius A , Nessa M N , Jompa J , Saru A , Hatta M , Rukminasari N 
Published: December 2019

Abstract
Mangroves are known to play a role in fisheries production, but specifically, however the associations between economically important fish species and mangroves with varied characteristics are not yet widely known. The aim of this study was to analyse the relationship (association) between economically important fish species and mangroves with varied characteristics in Maumere Bay, Indonesia. The research used spatial and non-spatial methods; the research on economically important fish species used an experimental fishing sampling method. Correspondence analysis was applied to answer the question why certain economically important fish species were associated with certain mangrove characteristics. The mangroves at the study locations with characteristically dominant species Bruguiera parviflora, Avicennia alba, Bruguiera gymnorrhiza, Ceriops tagal, with a moderate value of the Shannon diversity index (1< H’ ≤3), and moderate value of the Simpson dominance index (0.5< C ≤0.75), associated with the economically important fish species Psammoperca waigiensis, Synanceia verrucosa and Pomadasys maculatus. The locations of mangrove with high mangrove cover (≥ 80%), Avicennia marina as dominant species, large area (100 ha) and high density (≥ 3000 trees / ha), Rhizophora mucronata as dominant species, and high value of Pielou’s evenness index (0.6< e ≤1.0) were associated with the economically important fish species Upeneus mollucensis, Lethrinus lentjan, and Lutjanus bitaeniatus. The mangrove locations with medium cover (50% - 75%), moderate values of Simpson dominance index (0.5< C ≤0.75) but high mangrove belt width (≥ 400 m) were associated with the economically important fish species Siganus javus, Stegostoma fasciatum, Mugil cephalus, Carangoides malabaricus and Chanos chanos.
Macroscopic characteristics of the gonad maturity stages of dusky parrotfish Scarus niger
Authors: Yanti A , Yasir I , Rahmani P Y , Aprianto R , Tuwo A , Tresnati J 
Published: December 2019

Abstract
The dusky parrotfish Scarus niger is an important economic fish. Like other reef fish that have good taste, white and thick meat, and don’t have a lot of tiny bones, the dusky parrotfish is a fine food fish. The dusky parrotfish has a very wide distribution in tropical and subtropical sea waters. This study aimed to validate the maturity stage descriptions based on macroscopic characters. The results of this study are expected to be a reference in the study of the reproductive biology of dusky parrotfish and other parrotfishes, such as first maturity and the reproductive cycle. The samplings were done monthly at Makassar Fisheries Port from January 2018 to May 2019. The parameters measured were total length, body weight, gonad weight, gonad length and width, and liver weight. The observed aspect was the gonad colour and condition for both male and female fishes. Five stages of gonad maturity used to identify the gonad maturity stages were quite accurate. The accuracy was indicated by the gonadosomatic index (GSI) and hepatosomatic index (HSI) values that increased progressively from Stage I to IV. This accuracy validates macroscopic characters used for identifying the maturity stage of dusky parrotfish
Exploring Biodiversity and Monitoring Genetic Resources of Aquatic Plants in Manado, North Sulawesi, Indonesia
Authors: Nugraha M F I , Koneri R , Julzarika A , Reflinur  , Enggarini W , Yunita R , Radjamuddin M A , Novita H 
Published: December 2019

Abstract
The diversity and abundance of aquatic plants in freshwater ecosystems are very important as supporting factors for ecosystems. Conservationists can help to preserve species from the threat of extinction. How can we support the most species of aquatic plants at minimum cost? One strategy is to search for them and identify biodiversity hotspots, especially where an exceptional concentration of endemic species is undergoing significant loss of habitat. The genetic resources of aquatic plants represent the health of aquatic environments, i.e. lakes, rivers and waterfalls. The erosion of these resources threatens the stability of inland water health. We examined the patterns, causes and implications of freshwater macrophyte richness and rarity in Manado. The provincial richness of all macrophyte species, including rare species, showed strong preferences for mesotrophic and eutrophic conditions. Meanwhile, the rare species occurring nationally were more evenly distributed across the entire gradient of trophic conditions. From the four survey locations in the waterfalls, lakes, and river flows of the Manado area, a total of 37 species of aquatic plants were collected. Each area surveyed included different species and this is unique to the Wallace region.
Model of investment reconstruction post moratorium of Cantrang fishing gear (case study: Makassar Strait Waters and Bone Bay in Indonesia)
Authors: Adhawati Sri Suro , Mallawa Achmar 
Published: December 2019

Abstract

Cantrang is active fishing gear. The workings of the Cantrang, drawn on the bottom of the water and the size of the small mesh, included in the category of fishing equipment damaging the environment and marine biota. In the PERMEN-KP/2/2015, Cantrang can no longer be used. For survival, fishermen must replace or reconstruct the investment used. The research objective is to analyze and obtain a model of investment reconstruction that can provide maximum income to fishermen in the Makassar Strait and Bone Bay waters after prohibiting the use of Cantrang in the Republic of Indonesia fisheries management area. The study used 6 treatments, namely; Scenario 1 without reconstructing, Scenario 2 reconstructing the net, Scenario 3 reconstructing the rope, Scenario 4 reconstructing the boat, Scenario 5 reconstructing the machine and Scenario 6 reconstructing the investment thoroughly. The study was conducted in August 2016 - July 2017 in 3 locations namely Takalar, Pangkep district, and Palopo City. The research location was determined intentionally by considering the existence of Cantrang and representativeness of the waters of Bone Bay and Makassar Strait. Sampling using census method. Research result; (1) Scenario 1. has a MtpI value equal to 0 (zero), which means that without reconstructing investment, income equals 0 (zero) (2) Scenarios 2 and 6 have a positive MtpI value which means that reconstructing investment causes an increased income (3) Scenarios 3, 4 and 5 have a MtpI value equal to negative which means that reconstructing investment causes a decrease in income.