Jurnal Segara最新文献

Abundance and Diversity of Phytoplankton and Zooplankton in Waters of Youtefa Bay Tourism Area 油特发湾旅游区水域浮游植物和浮游动物的丰度和多样性

Jurnal Segara Pub Date : 2023-01-04 DOI: 10.15578/segara.v18i3.11875

Annita Sari, A. Tuwo, C. Rani, A. Saru, Yudi Prayitno

{"title":"Abundance and Diversity of Phytoplankton and Zooplankton in Waters of Youtefa Bay Tourism Area","authors":"Annita Sari, A. Tuwo, C. Rani, A. Saru, Yudi Prayitno","doi":"10.15578/segara.v18i3.11875","DOIUrl":"https://doi.org/10.15578/segara.v18i3.11875","url":null,"abstract":"The waters in Youtefa Bay have degradation due to the transition from mangrove areas to industrial sites, housing, bridge construction and household waste disposal. Water degradation has indirectly affected the growth of plankton. Plankton consists of phytoplankton which is the primary producer of the food chain so that it is utilized by zooplankton as the first consumer. The aim of this study was to determine the abundance and diversity of phytoplankton and zooplankton. This research was conducted during June-August 2019, the method used purposive sampling. Samples were obtained from 6 observation stations. The results showed there is 28 species of phytoplankton (∑160,000 ind/L) and 15 species of Zooplankton (∑ 84,200 ind/L). The diversity index of Phytoplankton is ranging from 1-2.21; Dominance (D) 0.17-0.4 and similarity (E) 0.59-1, while for zooplankton diversity (H’) ranges from 0.97-1.39; Domination (D) 0.07-0.42 and similarity (E) 0.59-1. The Diversity Index shows that the waters of Youtefa Bay have moderate diversity. The similarity between genera is relatively same. The Dominance index value during the observation was seen <0.5 or close to 0, this means that in the community that there was no genus that was extremely dominating the other genera.","PeriodicalId":110565,"journal":{"name":"Jurnal Segara","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123103909","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Opak and Bogowonto Coastal Inlet Sand Spit Morphodynamics using Landsat and Sentinel Satellite Images 利用陆地卫星和哨兵卫星图像的Opak和Bogowonto海岸入口沙咀形态动力学

Jurnal Segara Pub Date : 2023-01-04 DOI: 10.15578/segara.v18i3.11918

R. Abida, T. Suprijo, B. Soeksmantono

引用次数: 0

Acoustic Wave Propagation Patterns in the Ocean Column 声波在大洋柱中的传播模式

Jurnal Segara Pub Date : 2022-12-20 DOI: 10.15578/segara.v18i3.11453

Fachri Ali Badihi, S. Pujiyati, Ayi Rahmat, S. Solikin, M. Hisyam

{"title":"Acoustic Wave Propagation Patterns in the Ocean Column","authors":"Fachri Ali Badihi, S. Pujiyati, Ayi Rahmat, S. Solikin, M. Hisyam","doi":"10.15578/segara.v18i3.11453","DOIUrl":"https://doi.org/10.15578/segara.v18i3.11453","url":null,"abstract":"Temperature and salinity play a role in the speed of sound and the process of sound propagation of acoustic waves in the water. Research on the propagation of sound waves in the ocean is a very interesting topic to do because it has many applications, including in underwater wireless communication systems and maritime security. This study aimed to analyze the propagation of acoustic waves in different water depths. The modeling was carried out with flat wave characteristics, in which the bathymetry characteristics of the seawater were ignored. In this ray path simulation, the frequency of 5.3Hz was used at 3 stations with different seawater depths in the Makassar Strait using temperature and salinity data downloaded from marine.coperniccus.eu data. The movement pattern of the acoustic waves was simulated using the Bellhop method. The ray tracing simulation results showed significant differences at the three locations. This was influenced by several factors, including the condition of the seawater environment, the placement of the transducer, the speed of sound, and the depth. Shallow seawater would show a more complicated ray path than deep seawater. The greater the angle of the half beam used, the greater the distance of the range of each beam of light will be so that the reflection of the resulting beam of light covers each column of seawater. The closer the distance between the resulting ray paths, the smaller the energy lost.","PeriodicalId":110565,"journal":{"name":"Jurnal Segara","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127648397","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Study of Carrying Capacity and Development Strategy of Coral Garden Based Ecoedutourism in Cemara Besar Island, Karimunjawa National Park, Jepara, Central Java 中爪哇Jepara Karimunjawa国家公园Cemara Besar岛珊瑚园生态教育旅游承载力及发展策略研究

Jurnal Segara Pub Date : 2022-12-19 DOI: 10.15578/segara.v18i3.11125

Yeremia Edgar Aprilio, M. Asadi, Yulius Yulius

{"title":"Study of Carrying Capacity and Development Strategy of Coral Garden Based Ecoedutourism in Cemara Besar Island, Karimunjawa National Park, Jepara, Central Java","authors":"Yeremia Edgar Aprilio, M. Asadi, Yulius Yulius","doi":"10.15578/segara.v18i3.11125","DOIUrl":"https://doi.org/10.15578/segara.v18i3.11125","url":null,"abstract":"Cemara Besar Island, Karimunjawa National Park, is an important tourist destination in the province of Central Java due to its beautiful beaches and coral reefs. The purpose of this study was to see the area carrying capacity for ecoedutourism based on coral gardens in Cemara Besar Island, analyze development strategies, and find out the recommended spots. The carrying capacity of the area is calculated using three considerations: Physical Carrying Capacity (PCC), Real Carrying Capacity (RCC) and Effective Carrying Capacity (ECC). The results, in PCC>RCC>ECC format, are 2472>97>42 people per day in the utilization zone while 670 > 30 > 15 people per day in the protection zone. Using SWOT analysis, the analysis of tourism development strategies produced 15 alternative regional development strategies, with the top strategic priority being “the development of the concept of coral garden tourism”. Observations on five recommended spots were carried out using a time swimming method, by snorkeling for 10 minutes in an area of 10 m × 10 m per point. The two recommended points in the northern east side of the island, points B and D, are designated as the highly recommended points to apply the concept of ecoedutourism based on coral garden because in these two points the condition of coral reefs is not too good and requires restoration.","PeriodicalId":110565,"journal":{"name":"Jurnal Segara","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131019351","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Bioconcentration of Lead at Avicennia Marina in Mangunharjo, Semarang Coastal Area 三宝垄沿海地区Mangunharjo Avicennia码头铅的生物富集

Jurnal Segara Pub Date : 2022-12-14 DOI: 10.15578/segara.v18i3.11165

Zallva Arsyta Hartanto, Agus Hartoko, H. Haeruddin

引用次数: 0

Seagrass Connectivity Based on Oceanographic Condition in The Marine Protected Area of Biawak Islands, Indramayu 基于海洋学条件的因德拉马尤比亚瓦克群岛海洋保护区海草连通性研究

Jurnal Segara Pub Date : 2022-08-04 DOI: 10.15578/segara.v18i1.10961

Aditya Ramadhan, N. P. Purba, S. Sunarto, U. Hernawan, Ibnu Faizal

{"title":"Seagrass Connectivity Based on Oceanographic Condition in The Marine Protected Area of Biawak Islands, Indramayu","authors":"Aditya Ramadhan, N. P. Purba, S. Sunarto, U. Hernawan, Ibnu Faizal","doi":"10.15578/segara.v18i1.10961","DOIUrl":"https://doi.org/10.15578/segara.v18i1.10961","url":null,"abstract":"Seagrasses are an essential component of the coastal environment with provide many ecosystem services beneficial to humans. Understanding the pattern of dispersal of segrasses is important for conservation management. The aimed of this research was to analyze the seed dispersal of the seagrass Enhalus acoroides in the Marine Protected Area of Biawak Islands, Indramayu, based on hydrodynamic modelling. Oceanographic data were downloaded from several open acces website and location of seagrasses based one insitu observation. Then, oceanographic parameters and seed traits were used to develop the particle trajectory model. Our analysis showed that the seafloor’s depth around the islands varied, ranging from 8 m to 48 m. The seed dispersal was strongly influenced by alternating tidal currents (reversing current). The particle trajectory showed that most of the seeds would be transported outward away from each source in the islands, and they settled in deeper areas further from the coast of the islands. This result indicates that the seagrass population in Biawak Islands might depend predominantly on vegetative recruitment, which is slow. This may be related to the low seagrass canopy cover in Biawak Islands.","PeriodicalId":110565,"journal":{"name":"Jurnal Segara","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128984008","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Biodiversity and Aquatic Vegetation Succession in Biawak Island Marine Protected Area, Indramayu-West Java 西爪哇因德拉马尤比阿瓦克岛海洋保护区的生物多样性和水生植被演替

Jurnal Segara Pub Date : 2022-07-27 DOI: 10.15578/segara.v18i1.10965

A. Hutahaean, A. Rustam, A. Daulat, Y. P. Rahayu, D. D. Suryono, H. L. Salim, M. A. Kusumaningtyas

{"title":"Biodiversity and Aquatic Vegetation Succession in Biawak Island Marine Protected Area, Indramayu-West Java","authors":"A. Hutahaean, A. Rustam, A. Daulat, Y. P. Rahayu, D. D. Suryono, H. L. Salim, M. A. Kusumaningtyas","doi":"10.15578/segara.v18i1.10965","DOIUrl":"https://doi.org/10.15578/segara.v18i1.10965","url":null,"abstract":"The existence of aquatic vegetation in the coastal waters is correlated with the water quality parameters. Seagrass and macroalgae are aquatic plants often found to form a coastal ecosystem that depends on water quality, both physically and chemically. Research on the existence of aquatic plants in Biawak Island, Indramayu, West Java, was conducted in 2016 and 2019 by combining in situ data and secondary data. The purpose of this study was to observe the dynamics of seagrass ecosystems as aquatic plants on Biawak Island and their correlation with the succession that occurred in the aquatic environment in Biawak Island as part of the Biawak Archipelago Marine Protected Area (MPA). The research method integrates a descriptive analysis and its correlation between the submerged aquatic plants and their environment. The results showed that seagrasses in Biawak Island tend to disappear and be replaced by macroalgae. The type of seagrass found in 2016 was Enhalus Acoroides covered by epiphytes perished in 2019. The abundance of macroalgae, especially Halimeda macroloba, indicates the existence of nutrient enrichment and high turbidity, causing the seagrass to be replaced by macroalgae. Another biodiversity found in the region was clams and sea cucumber, while branching coral conditions experienced bleaching and degradation. An environmental condition contains high nutrients strengthening the nutrient enrichment for a particular time. Therefore, integrated management regarding terrestrial and shipping lines track needs to be addressed to maintain the sustainability of the natural resources in the Biawak archipelago.","PeriodicalId":110565,"journal":{"name":"Jurnal Segara","volume":"263 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124284695","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Economic Benefits of Marine Protected Areas, Case of Anambas Islands, Indonesia 海洋保护区的经济效益，以印度尼西亚阿南巴斯群岛为例

Jurnal Segara Pub Date : 2022-06-17 DOI: 10.15578/segara.v18i1.11009

Leny Dwihastuty, Supriyadi Supriyadi, U. Muawanah, M. H. Jayawiguna

引用次数: 1

Determining The Capacity of Temporary Evacuation Shelter in Carita and Labuan District Pandeglang Regency 确定嘉丽塔和纳闽区临时疏散避难所的容量

Jurnal Segara Pub Date : 2022-04-11 DOI: 10.15578/segara.v18i1.10544

D. Purbani, M. Ramdhan, H. L. Salim, A. Daulat, A. Heriati, B. Ontowirjo, A. Ardiansyah

{"title":"Determining The Capacity of Temporary Evacuation Shelter in Carita and Labuan District Pandeglang Regency","authors":"D. Purbani, M. Ramdhan, H. L. Salim, A. Daulat, A. Heriati, B. Ontowirjo, A. Ardiansyah","doi":"10.15578/segara.v18i1.10544","DOIUrl":"https://doi.org/10.15578/segara.v18i1.10544","url":null,"abstract":"A tsunami due to the GAK flank collapse occurred along the Sunda Strait Coast on December 22, 2018, with areas severely hit including Labuan and Carita Districts on the coast of Pandeglang Regency. The disaster resulted in the death of 431 people, more than 7200 injured and 46,646 people lost their homes. To anticipate the number of disaster casualties, disaster mitigation efforts are carried out using network analysis applications from GIS (Geographical Information Systems) software. The data used in the network analysis process is road data obtained from the Open Street Map in 2019 and supported by wave propagation and speed time to TES. This study used a walking speed of 0.751 m/second for elderly people. The results of the network analysis process showed the best route to the proposed Temporary Evacuation Shelter (TES). There are eight proposed TES in Carita District from which seven are located on Raya Anyer Sirih Street and another one is located on Perintis Kemerdekaan. The number of residents in each area segment in the proposed TES is between 179 and 2,677 people. Yet, there are four existing TES units in Carita District located on Perintis Kemerdekaan Street. In Labuan District, one TES unit is proposed, which has the capacity of up to 4,376 people. Meanwhile, its existing TES is in the form of a Tsunami Shelter Building with a capacity of 23,635 people.","PeriodicalId":110565,"journal":{"name":"Jurnal Segara","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115138729","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Coastal Vulnerability Assessment Along The North Java Coastlines-Indonesia 沿北爪哇海岸线的海岸脆弱性评估-印度尼西亚

Jurnal Segara Pub Date : 2022-04-11 DOI: 10.15578/segara.v18i1.10664

D. Handiani, A. Heriati, Fitry Suciaty

{"title":"Coastal Vulnerability Assessment Along The North Java Coastlines-Indonesia","authors":"D. Handiani, A. Heriati, Fitry Suciaty","doi":"10.15578/segara.v18i1.10664","DOIUrl":"https://doi.org/10.15578/segara.v18i1.10664","url":null,"abstract":"The north coast of Java is an area with very diverse maritime activities. These high activities threaten the ecosystem and environmental sustainability. Several areas already experience environmental degradation and most of the threats come from ocean pollution, coastal erosion, continuous tidal flood (rob), and coastal land subsidence. Furthermore, the coastal degradation is worsened by climate change which may cause the area more vulnerable to disaster. This study aims at evaluating the coastal vulnerability using weighted coastal vulnerability index (CVIw). The method calculates coastal vulnerability by weighting physical coastal parameters using Analytical Hierarchy Process (AHP). CVIw calculation result shows that the vulnerability is dominant at high (39%) and very high (51%) classes. The high vulnerability occurs in Tangerang, Bekasi, Brebes, Demak, Jepara, Pati, and Rembang Regencies. Meanwhile, very high vulnerability takes place in several regencies: Serang, Karawang, Subang, Indramayu, Cirebon, Tegal, Kendal, Semarang, and Gresik. The parameters of relief, coastal features, tidal range and shoreline give contribution more in coastal vulnerability besides lithology, sea level change, and wave height. Identifying vulnerability in these areas might help local governments to prioritize their action plan in coastal disasters mitigation.","PeriodicalId":110565,"journal":{"name":"Jurnal Segara","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129456981","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1