bluuebunny/crossref_metadata_2025_split huggingface dataset:
ACCURACY IMPROVEMENT ON SEA SURFACE HEIGHT ESTIMATION BASED ON WAVEFORM RETRACKING ANALYSES OF JASON-2 SATELLITE IN JAVA SEA
Authors: Hakim Muhammad R. , Nababan Bisman , Panjaitan James P. 
Published: October 2017

<p><em>A waveform created by the reflected signal from altimeter satellite in offshore is generally in ideal shape (Brown-waveform) and produces an accurate sea surface height (SSH) estimation. However, over coastal waters, the waveform shape becomes complex due to a disruption by reflected signal from land, resulting inaccurate SSH estimation. The objective of this research was to improve the accuracy of SSH estimation employing waveform retracking analyses of Jason-2 altimeter satellite data in the Java Sea during the years of 2012-2014. This study used data from the Sensor Geophysical Data Record type D (SGDR-D) from Jason-2 satellite (cycle 129 - 239) and global geoid undulation data of Earth Gravitational Model 2008 (EGM08). </em><em>Waveform retracking analyses were conducted using several retracker methods</em>. <em>The performance of the all retrackers were examined using a world reference undulation geoid of EGM08. The results showed that the waveform retracking analyses were able to improve the accuracy of SSH estimation approximately 29.7% in the north coast and 56.4% in the south coast of total non-Brown-waveform in each region. Higher improvement percentage (IMP) of SSH estimation found in the southern coastal areas was due to a relatively smooth coastline formation in this region than in northern coastal region. There was no specific retracker that produce dominant IMP of SSH estimation. However, the threshold 10% retracker produced better SSH estimation than the other retrackers with dominant IMP values of 57.1% (pass 051), 48.1% (pass 064), and 25.7% (pass 127). OCOG retracker the worst retracker to estimate SSH in the Java Sea. </em></p><p><strong><em>Keywords: </em></strong><em>EGM08, </em><em>waveform retracking, SSH, Jason-2, ocean retracker, threshold retracker</em></p>
DISTRIBUTION OF SEAGRASSES IN INNER AMBON BAY
Authors: Irawan Andri , Nganro Noorsalam R. 
Published: October 2017

<p align="center"><strong><em>ABSTRACT</em></strong></p><p><em>Excessive </em><em>sedimentation in </em><em>Inner</em><em> Ambon </em><em>Bay</em><em> (</em><em>IAB</em><em>) is alleged to </em><em>cause</em><em> the degradation of seagrass ve</em><em>-</em><em>getation in the area. To get a clearer picture about the matter, </em><em>we conducted a field study </em><em>in October 2010 - January 2011</em><em> </em><em>to describe the distribution and density of seagrass at several locations in </em><em>IAB</em><em> with different conditions of sedimentation </em><em>levels</em><em>. Data were collected using transects perpendicular to the coastline along the seagrass vegetation. The results show</em><em>ed</em><em> that there </em><em>we</em><em>re six </em><em>species</em><em> of seagrass</em><em> </em><em>which</em><em> </em><em>were</em><em> spread</em><em>ed</em><em> unevenly. </em><em>At the</em><em> locations with </em><em>high</em><em> sedimentation</em><em>, we found the</em><em> </em><em>formation of </em><em>monospecies </em><em>seagrass </em><em>vegetation. Conversely, at </em><em>the</em><em> location</em><em>s</em><em> </em><em>with low</em><em> sedimentation, </em><em>we found the formation of </em><em>multispecies </em><em>seagrass </em><em>vegetation. </em><em>The </em><em>distribution and abundance of </em><em>each </em><em>species </em><em>was </em><em>related to</em><em> the</em><em> differences </em><em>of seagrasses </em><em>ability to grow in a certain environment and </em><em>the </em><em>compe</em><em>-</em><em>titiveness among </em><em>them</em><em>.</em></p><p><em> </em></p><p><strong><em>Keywords</em></strong><strong>:</strong><em> sedimentation, distribution, seagrass, Inner Ambon Bay</em></p>
SPATIAL AND TEMPORAL VARIATION OF INDONESIAN THROUGHFLOW IN THE MAKASSAR STRAIT
Authors: Atmadipoera Agus S. , Horhoruw Selfrida M. , Purba Mulia , Nugroho Dwi Y. 
Published: October 2017

<p><em>Using outputs of INDESO model, this study investigated vertical structure, spatial and temporal variation of the Indonesian Throughflow in Makassar Strait (M-ITF). It was shown that the main axis of persistent southward jet of M-ITF formed a unique path following the western shelf slope along the strait, which was associated with a high kinetic energy (KE) region from near-surface down to the thermocline layer. Furthermore, a drastic jump of KE appeared in the narrow and deep Libani Chan-nel (near 3°S) where the strait's width shrinks significantly, thus an elevated flow velocity was needed to maintain transport volume balance. Here, maximum southward velocity at thermocline exceeded 1.2 m/s. Spatial pattern of M-ITF can be described by the first EOF mode which accounts for 79 % of the total variances. It exhibited that contours of the flow amplitudes were similar to M-ITF path, and the largest amplitude was located near the Libani Channel. Out-of-phase relationship of the flow was found between M-ITF and eddies circulation that developed in the edges of the strait. Corresponding temporal fluctuation of the first EOF mode indicated that M-ITF variabilities varied from intra-seasonal to inter-annual scales. Annual fluctuation of M-ITF was seen from EOF mode-2 (at thermocline layer) and mode-3 at lower-thermocline. Cross-spectra analysis revealed that variability of M- ITF (e.g. on annual scale) at northern entrance was highly coherent to the fluctuations of North Equatorial Current (NEC) and Mindanao Current (MC), suggesting that variability of M-ITF was remotely influenced by the Pacific low-latitude western boundary currents.</em></p><p><em> </em><strong><em>Keywords</em></strong><em>: INDESO model, Indonesian Throughflow, Makassar Strait, EOF, Cross-Spectra Analysis</em></p>
THE EFFECT OF STOCK DENSITY OF GOLDEN-MOUTH TURBAN (Turbo chysostomus, L.) ON THEIR SURVIVAL AND GROWTH UNDER AIR WATER LIFT SYSTEM
Authors: Hamzah M.S. 
Published: October 2017

<p><em>Golden-mouth turban (<span style="text-decoration: underline;">Turbo</span> <span style="text-decoration: underline;">chrysostumus</span>, L.) belongs to </em><em>the phylum of </em><em>molluscs that </em><em>inhabits </em><em>coral reef ecosystem</em><em> in group. Golden-mouth turban normally uses algae for their food</em><em>. </em><em>Study on s</em><em>urvi</em><em>val</em><em> and growth of the </em><em>juvenile </em><em>golden-mouth turban focus</em><em>sing</em><em> on different density under air water lift sys</em><em>-</em><em>tem is </em><em>still limited</em><em>. This study was </em><em>conducted on 7</em><em> January</em><em> – 6 </em><em>May, 2015, in </em><em>a</em><em> laboratory</em><em> </em><em>to observe the effect of different density on the surviv</em><em>al</em><em> and growth of golden-mouth turban under air </em><em>water </em><em>lift system. </em><em>Based on the analyses of variance (ANOVA), there was no significant different (P&gt;0.05) on mortality rate for different stock density treatment (5 ind., 10 ind., 15 ind., and 20 ind. each in 10 liter water volume). However</em><em>, </em><em>based on growth rate, </em><em>the density of 5 individuals </em><em>produced</em><em> the highest monthly growth rate</em><em> of</em><em> 1.88</em><em> </em><em>mm</em><em>/month</em><em> </em><em>of </em><em>shell height, 1.18</em><em> </em><em>mm</em><em>/month of </em><em>mouth opening, and 1.1</em><em> </em><em>gr</em><em>/month of </em><em>wet weight</em><em> with </em><em>the highest daily mean food absorption</em><em> of</em><em> 91.55 %. </em><em>For all treatment, the c</em><em>orrelation of shell height and wet body </em><em>weight</em><em> exhibited </em><em>a </em><em>similar growth pattrern</em><em> i.e.</em><em>, allometry minor (b&lt;3). </em></p><p><strong><em>Ketwords</em></strong>: <em>Surviv</em><em>al</em><em>, growth, golden-mouth turban (<span style="text-decoration: underline;">Turbo</span> <span style="text-decoration: underline;">chrysostumus</span>), stocking density, air water lift system.</em></p>
REPRODUCTION BIOLOGY EASTERN LITTLE TUNA Euthynnus affinis IN THE SUNDA STRAIT
Authors: Ardelia Vera , Vitner Yon , Boer Mennofatria 
Published: October 2017

<em>Eastern little tuna</em> <em>is small pelagic fish that has high economic value. Fishing effort of the eastern little tuna for the last eight years have also exceeded the optimum level. To ensure the sustainability of the pelagic fish resources, it is necessary to perform the management efforts. This study was to observe reproductive Biology of the eastern little tuna, as one of the necessary information in the management of fishery resources. Fish -samples were collected from the catch of local fishermen in April-August 2015. Based on T test (α = 0,05), the eastern little tuna</em> <em>males and females showed positive allometric growth patterns. Average size of the first time caught fish for the female (308,37 mm) and male (280,63 mm) was smaller than that observed in those first time maturity gonads (ranging 407-408 mm for female and 438-440 mm for male</em>)<em>. </em> <em>The eastern little tuna</em> <em>spawn gradually or partially (partial spawner), and</em> <em>have high reproductive potential with fecundity ranged 17.814-560.792 eggs (average fecundity: 109.807) in fish of 285-630 mm body length. The gonad maturity level of the eastern Little Tuna is dominated by Gonad maturity level I and II,(immature). The value of gonad maturity for the female level is about 0,0769-0,6879 and the male is 0,1913-0,3000.</em>
RATIO OF THE MAIN DIMENSIONS AND STATIC STABILITY TRADITIONAL PURSE SEINER IN PINRANG
Authors: Azis Muh. Arkam , Iskandar Budhi Hascaryo , Novita Yopi 
Published: October 2017

<p><em>The fishing vessel is the main vehicle of the fishermen to go to fishing ground and hauling purse seine especially fishing gear. Pinrang Regency ships traditionally built without calculation of naval architecture. Where the purse seine fishing gear in Pinrang Regency has length 330 m nets with a depth of 36 m. The purpose of this research was to examine the main dimension ratio in particular design and static stability of the vessel purse seine in Pinrang Regency. Method of using a case study on two types of vessels have different relative and analyzed by numerical simulation, calculate the ratio of the main dimensions and static stability. The results of this research are the vessels in Pinrang kasko model has the shape of a round bottom and slim body as well as the ratio of the dimensions of the vessels only L/D purse seine LOA 24 m more than the standard reference of vessels (encircling) in Indonesia and on the value of the static stability by the IMO, with a purse seine vessel Pinrang already has a good stability. However, in both types of vessel purse seine size 20 m that has better stability.</em></p><p><em> </em></p><strong><em>Keywords:</em></strong><em> design, fishing vessel, purse seine, stability</em>
BIODIVERSITY OF REEF FISHES IN MARINE PROTECTED AREA OF KARIMUNJAWA NATIONAL PARK
Authors: Yuliana Ernik , Boer Mennofatria , Fahrudin Achmad , Kamal M. Mukhlis 
Published: October 2017

<p><em>Karimunjawa National Park (KNP) has a high diversity of coral reef and fish. This study is aimed to analyze the biodiversity of reef fish in KNP. Field survey was conducted in KNP, District of Jepara, Central Java, in April-Juni 2015. Primary data was obtained by using survey and observation method, includes the number of reef fish individuals per family, coral cover, turbidity, total nitrogen (N), and PO<sub>4</sub>. Secondary data were obtained from KNP authority. Belt transect method was used for counting the number of reef fish individuals, while coral cover was measured using line intercept transect (LIT) method. Abundance and biomass of reef fishes were analyzed descriptively, followed by cluster analysis. The results indicated that the average of coral cover in 2015 was 44.70%. The highest coral cover was in Taka Malang with 65.65% and the lowest was in Nirwana with 35.45%. The reef fish’s abundance in 2015 was dominated by Pomacentridae (60.46%) with an abundance of 14,850 </em><em>no</em><em>/ha, the second position was Caesionidae (11.77%) with an abundance of 2,892 </em><em>no</em><em>/ha, the third was Scaridae (6.27%) with an abundance of 1,540 </em><em>no</em><em>/ha. The highest biomass in 2015 was Scaridae (122.33 kg/ha), the second order was Caesionidae (104.91 kg/ha), and the third was Serranidae (50.80 kg/ha). Reef fish biodiversity in KNP is considering properly maintained, as demonstrated by high abundance and biomass of fish families. </em></p><p><strong><em> </em></strong></p><strong><em>Keywords</em></strong><em>: biodiversity, reef fish, Karimunjawa, marine protected area</em>
ZOOPLANKTON COMMUNITY STRUCTURE AT MAJAKERTA ESTUARY AND ITS SURROUNDING WATERS, INDRAMAYU REGENCY, WEST JAVA PROVINCE
Authors: Widyarini Happy , Pratiwi Niken T.M. , Sulistiono . 
Published: October 2017

<p><em>Majakerta estuary </em><em>and its surrounding waters </em><em>ha</em><em>ve a high </em><em>potential fishery resource </em><em>which</em><em> is </em><em>commonly </em><em>utilized by the community</em><em> around the area</em><em>. Fluctuation of</em><em> physical and chemical parameters of the waters and fishery activities around the estuary can influence the existenc</em><em>e</em><em> of zooplankton</em><em>. This study was conducted from December 2014 to May 2015. Sampl</em><em>es</em><em> of </em><em>the </em><em>zooplankton w</em><em>ere</em><em> collected monthly at </em><em>four</em><em> station</em><em>s </em>(<em>consisted of sea, river and estuary areas</em>)<em>. Based </em><em>o</em><em>n the </em><em>study</em><em>, zooplankton in the Majakerta estuary </em><em>and its surrounding waters </em><em>consist</em><em>ed</em><em> of six classes; i.e. Protozoa (11 genera), Crustaceae (4 genera, 1 nauplius stadia), and Rotifera (4 genera). </em><em>A higher abundance was found at the sea (29025 ind./m<sup>3</sup>), while a lower abundance was at the river and estuary (7147 ind./m<sup>3</sup> dan 7582 ind./m<sup>3</sup>). </em><em>Based on the zooplankton diversity index, it</em><em> can be inferred that the value was relatively low. There were two habitat groups, namely Station Group 1 </em><em>(Station 1 and </em><em> 2</em><em>; </em><em>river</em><em> and</em><em> estuary) and </em><em>Station Group 2 (S</em><em>tation 3 </em><em>and </em><em>4</em><em>; </em><em>sea) w</em><em>ith </em><em>influencing parameters</em><em> </em><em>such as </em><em> </em><em>transparency</em><em>, pH, and salinity. </em></p><p><em> </em></p><p><strong><em>Keywords:</em></strong><em> </em><em>e</em><em>stuar</em><em>y</em><em>, Majakerta, </em><em>zoo</em><em>plankton</em><em>,</em><em> community structure</em><em></em></p>
SEDIMENDT CHARACTERISTICS OF COASTAL WATERS AROUND INTENSIVE SHRIMP PONDS DURING WET SEASON IN PUNDUH BAY, PESAWARAN DISTRICT OF LAMPUNG PROVINCE
Authors: Paena Mudian , Suhaimi Rezki Antoni , Undu Muhammad Chaidir 
Published: October 2017

<p><em>The study was conducted using survey method. The sampling points were based on the distances from pond outlet toward offshore which were 25, 100, 200, 400, 800, 1600 and 3200 m. Sample of sediments were collected using sediment grab then about 1-1.5 kg of samples were stored in plastic bags for analysis of pH, redox potential, carbon organic. The in-situ measurements were conducted for pH and redox potential using a pH mV and pH meter, probe HANNA instruments HI 8424, whereas other sediment quality variables were analysed under laboratory. The results of this study showed that the pH sediments were ranged between 6.38 </em>–<em> 7.80 with average of 7.36. Redox potential of sediments ranged between -186 to 72 mV, average -</em><em> </em><em>88.39 mV. Carbon organic ranged between 0.30 </em>–<em> 9.85%, average 3.09%. Organic matter ranged between 0.30 </em>–<em> 9.85%, average 3.16%. Total nitrogen were ranged between 0.05 </em>–<em> 0.25% with average of 0.17%, phosphate were 8.62</em><em> </em>– <em>187.71 mg/L with average of 88.43 mg/L. Based on the sediment characteristics, the sediments of Punduh Bay had been polluted by organic matters.</em></p><p><em> </em></p><p><strong><em>Keywords</em></strong><em>: sediment characteristics, shrimp ponds, Punduh bay, Pesawaran district, Lampung </em><em>province</em></p>
INVENTORY AND DISTRIBUTION OF MOLLUSC IN CORAL REEF OF BACAN ISLAND WATERS, NORTH MALUKU PROVINCE
Authors: Cappenberg Hendrik A.W. 
Published: October 2017

<p><em>Bacan Island waters of </em><em>North Maluku Province </em><em>consist</em><em>ed</em><em> of three </em><em>main tropical </em><em>ecosystem</em><em>s, namely</em><em> mangrove, seagrass, and coral reef with </em><em>the</em><em> highest marine biodiversity. Mollusc is </em><em>a group of </em><em>marine </em><em>fauna that most of them </em><em>associate</em><em>d</em><em> </em><em>with </em><em>coral reef</em><em>. However, little is known about their information in the Bacan Island due to lack of study conducted there. </em><em>The purpose of </em><em>this study is to observe the diversity and distribution of mollusc fauna in the </em><em>coral reef flat of</em><em> Bacan Island. M</em><em>ollusc</em><em> i</em><em>nventory was done using Rapid Reef Resource Assessment (RRA) </em><em>method </em><em>by </em><em>snorkling in the reefs of east coast (25 sites) and west coast (10 sites) of Bacan Island. </em><em>The </em><em>mollus</em><em>cs found </em><em>were directly identified into species level and recorded. </em><em>Results of inventory </em><em>show that there are </em><em>47 species </em><em>belong to </em><em>19 famil</em><em>ies with the family of </em><em>Muricidae is</em><em> the </em><em>highest </em><em>diversity (</em><em>6 species</em><em>), while the lowest are </em><em>Buccinidae, Bursidae, Haliotidae, Olividae, Cardiidae, Isognomonidae and Spondylidae</em><em>, respectively with only 1</em><em> species</em><em> in each of those families. T</em><em>he highest </em><em>species </em><em>number of mollusc was </em><em>distributed along the east coast of the island (</em><em>40 species)</em><em>, </em><em>and </em><em>the</em><em> </em><em>lowest one was i</em><em>n </em><em>the west coast (</em><em>37 species</em><em>)</em><em>. Some species such as Tridacna spp., Pinctada margaritifera and Pteria pengui</em><em>n are important species, because they have economical values.</em><em></em></p><p><em> </em></p><strong><em>Keywords</em></strong><em>: biodiversity, molluscs, coral reef, Bacan Island, North Maluku</em>
SEDIMENT ACCUMULATION PROFILE IN MANGROVE RESTORATION AREA OF LEMBAR BAY-LOMBOK ISLAND
Authors: Paputungan Mohammad Sumiran , Koropitan Alan Frendy , Prartono Tri , Lubis Ali Arman 
Published: October 2017

<p><em>Mangrove restoration is really needed for restoring its ecosystem functions, so that it could be able to support fisheries activity and to protect coastal by extreme weather. In addition, mangrove is able to accumulate sediment that important in protecting the coastal area from sea level rise. Therefore, the aim of this study is to investigate sediment accumulation rate in mangrove area during post restoration</em><em>.</em><em> Sampling location were divided into three different stations based on estimated restoration ages, such as </em><em>≥ 15 </em><em> years old (Station 1), 4</em><em> </em><em>-</em><em> </em><em>10 years old (Station 2) and 2</em><em> </em><em>-</em><em> </em><em>8 years old (Station 3).</em><em> </em><em>Sediment cores </em><em>were </em><em>carried out</em><em> </em><em>by inserting 7.6 cm diameter</em><em> and 100 cm length of</em><em> </em><em>polyvinyl chloride</em><em> pipes. </em><em>Sedimentation rate is measured by using Pb-210 radionuclide analysis</em><em>. The result</em><em>s</em><em> </em><em>show that</em><em> </em><em>the sediment accumulation rate in the last 20<sup>th</sup> years from all station </em><em>ranges from 0.17 to 0.42 g/cm<sup>2</sup>/year. The highest accumulation rate is found at oldest year old station while the lowest accumulation rate is found at younger year old station of mangrove restoration area. Restoration process is clearly able to recover the mangrove’s role in trapping sediment in coastal region.</em></p><p><em> </em></p><p><strong>Keywords</strong>:<em> sediment accumulation, mangrove restoration, Lembar Bay- </em><em>Lombok Island </em></p>
ANALISYS AND MAPPING OF ENVIRONMENTAL SENSITIVITY INDEX IN BANGGAI REGENCY AND BANGGAI ISLANDS REGENCY, CENTRAL SULAWESI
Authors: Putranto Sugeng , Zamani Neviaty P. , Sanusi Harpasis S. , Riani Etty , Fahrudin Achmad 
Published: October 2017

<p class="Isi"><em>The Environmental Sensitivity Index (</em><em>ESI</em><em>) is a description of the biological, socio-economic and socio-cultural values of a particular coastal and marine area used as a priority response to oil spills, shown on a map by applying spatial analysis using geographic information system technology. The purpose of this research</em><em> was</em><em> to analyse mangrove ecosystem area in Banggai and Banggai </em><em>Islands</em><em> Regency based on its vulnerability value by analyzing mangrove community structure and socio-economic services for local community. The research was conducted in nine sub-districts, among others: </em><em>South </em><em>Batui, Batui, </em><em>East </em><em>Luwuk, Lamala, Masama, </em><em>Balantak</em><em>, Bualemo (Banggai) and Bulagi and Buko </em><em>(Banggai Islands)</em><em>. The study was conducted from August to November 2016, with field observations, direct interviews with communities and local government and literature review. The results of spatial analysis of </em><em>ESI</em><em> in the coastal areas of Banggai and Banggai Islands are obtained from sensitivity values of medium and sensitive. Areas with moderate sensitivity are Batui, </em><em>East </em><em>Luwuk, Masama, Lamala, Balantak </em><em>and Bualemo </em><em>sub-districts with grades </em><em>of </em><em>16,78 – 24,35. The value of </em><em>ESI</em><em> with sensitive category ranges from 38,24 – 57,54</em><em> </em><em>in </em><em>Bulagi, Buko and South Batui </em><em>sub-districts.</em></p><p class="Isi"><em> </em></p><p class="Isi"><strong><em>Keywords: </em></strong><em>mangrove ecosystem, Environmental Sensitivity Index (ESI)</em></p>
Tree Automata Constructions from Regular Expressions: a Comparative Study
Authors: Mignot Ludovic , Sebti Nadia Ouali , Ziadi Djelloul 
Published: October 2017

There exist several methods of computing an automaton recognizing the language denoted by a given regular expression: In the case of words, the position automaton 𝒫 due to Glushkov, the c-continuation automaton 𝒞 due to Champarnaud and Ziadi, the follow automaton ℱ due to Ilie and Yu and the equation automaton ɛ due to Antimirov. It has been shown that 𝒫 and 𝒞 are isomorphic and that ɛ (resp. ℱ) is a quotient of 𝒞 (resp. of 𝒫). In this paper, we define from a given regular tree expression the position tree automaton 𝒫 and the follow tree automaton ℱ. Using the definition of the equation tree automaton ɛ of Kuske and Meinecke and our previously defined c-continuation tree automaton 𝒞, we show that the previous morphic relations are still valid on tree expressions.