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Contact Name
Dietriech G. Bengen
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dieter@indo.net.id
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+62251-8627323
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dieter@indo.net.id
Editorial Address
Departement of Marine Science and Technology Faculty of fisheries and marine science, IPB University Jln. Lingkar Akademik, Kampus IPB Darmaga, Bogor 16680, Indonesia
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INDONESIA
Jurnal Ilmu dan Teknologi Kelautan Tropis
ISSN : 20879423     EISSN : 2620309X     DOI : https://doi.org/10.29244/jitkt
Core Subject : Science,
Aims and Scope Journal of Tropical Marine Science and Technology (Jurnal Ilmu dan Teknologi Kelautan Tropis) is a scientific journal in the field of tropical marine science and technology. We have a aims and scope to focus in publishing a good quality scientific articles for dissemination of research results in the field of marine science and technology. Aims As an media of information and dissemination of research results in the field of marine science and technology, especially in the waters of Indonesia and Southeast Asia region, Could actively and continuously disseminate the best research results to various stakeholders, and; This Journal of Tropical Marine Science and Technology can improve the quality of research results and benefit stakeholders. Scope The article, published in this Journal of Tropical Marine Science and Technology covers a wide range of research topics in the field of: marine biology, marine ecology, biological oceanography, chemical oceanography, physical oceanography, dynamical oceanography, coral reef ecology, marine acoustic, marine remote sensing, marine geographical information system, marine microbiology, marine polution, marine aquaculture, post-harvest fisheries technology, integrated coastal management (ICM) marine biotechnology, air-sea interaction, ocean engineering,
Arjuna Subject : Umum - Umum
Articles 20 Documents
Search results for , issue "Vol. 11 No. 1 (2019): Jurnal Ilmu dan Teknologi Kelautan Tropis" : 20 Documents clear
THE HANDLING OF ROUND SCAD ON MINI PURSE SEINE BOATS, REGENCY OF REMBANG REVIEWED BASED ON THE DECREE OF MINISTER OF MARINE AFFAIRS AND FISHERIES NUMBER 52A/KEPMEN-KP/2013 Sri Untari Puji Rejeki; Y. S. Darmanto; Eko Nurcahya Dewi
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 11 No. 1 (2019): Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (369.306 KB) | DOI: 10.29244/jitkt.v11i1.23301

Abstract

The round scad produced will have the best quality if the catching and handling method onboard and at the port is carried out quickly, precisely and carefully. The entire handling activity has been regulated in the Decree of the Minister of Marine Affairs and Fisheries (KEPMEN KP) number 52A/KEPMEN-KP/2013. This research aimed to determine the level of conformity between the handling carried out onboard with the standard handling regulated in the KEPMEN KP number 52A/KEPMEN-KP/2013. The analysis results will be used as the basis for developing alternative strategies for the standard implementation of Round scad on the mini purse seine boats in the Regency of Rembang. The data collecting was carried out by observation and interviews with respondents. Data were analyzed using gap analysis, which is looking for the difference between standard handling and the handling carried out during the research. The elements analyzed were boat facilities, onboard hygiene, human resources, tools and equipment for handling fish, as well as fishing technique and catching unit. The research results showed that the average score of the conformity of handling on the five elements are 69.52%, which means that the round scad handling on mini purse seine boat in the Regency of Rembang is not reaching the standards regulated in the KEPMEN KP number 52A/KEPMEN-KP/2013. This is caused by the low level of conformity in the element of human resources of 38.56%.
ANALISIS KEBERLANJUTAN PERIKANAN ELASMOBRANCH DI TANJUNG LUAR KABUPATEN LOMBOK TIMUR Iman Wahyudin; Mohammad Mukhlis Kamal; Achmad Fahrudin; Mennofatria Boer
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 11 No. 1 (2019): Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (537.042 KB) | DOI: 10.29244/jitkt.v11i1.23412

Abstract

ABSTRAKPenelitian ini bertujuan untuk menganalisis status keberlanjutan perikanan elasmobranch di Tanjung Luar, Kabupaten Lombok Timur. Analisis menggunakan metode RAPFISH dengan lima dimensi, yaitu dimensi ekologi, ekonomi, sosial, teknologi dan kelembagaan. Hasil penelitian menunjukkan bahwa status keberlanjutan perikanan elasmobranch di Kabupaten Lombok Timur dikategorikan kurang berkelanjutan karena nilai indeks yang dihasilkan hanya sebesar 46,82. Hasil analisis sensitivitas menunjukkan bahwa dari total 37 atribut yang digunakan, teridentifikasi 15 atribut sensitif yang mempengaruhi nilai indeks keberlanjutan perikanan elasmobranch yaitu: komposisi spesies hasil tangkapan, endangered species, threatened species, dan protected species (ETP), kualitas perairan, kepemilikan asset, alternatif pekerjaan dan pendapatan selain menangkap ikan, tingkat pendidikan nelayan, partisipasi keluarga dalam pemanfaatan hasil perikanan, konflik perikanan, kesesuaian fungsi dan ukuran kapal penangkap ikan dengan dokumen legal, selektivitas penangkapan, penangkapan yang bersifat destruktif, tingkat sinergitas kebijakan dan kelembagaan pengelolaan perikanan, rencana pengelolaan perikanan dan kapasitas pemangku kepentingan. Lima atribut yang tersisa dikategorikan tidak sensitif. Penyusunan dan penerapan kebijakan yang konstruktif perlu dilakukan untuk memperbaiki kondisi keberlanjutan perikanan elasmobranch di Kabupaten Lombok Timur. ABSTRACTThis study aims to analyze the status of sustainability of elasmobranch fisheries in Tanjung Luar, East Lombok Regency. The method used was RAPFISH analysis using 5 dimensions, namely ecology, economics, social, technology and institutions. The results showed that the sustainability status of elasmobranch fisheries in East Lombok Regency was categorized as less sustainable because the index value produced was only 46.82. The results of the sensitivity analysis showed that of the total 37 attributes used, 15 sensitive attributes were identified which affected the index sustainability value of elasmobranch fisheries, namely: composition of catched species, endangered species, threatened species, and protected species (ETP), water quality, asset ownership, alternative employment and income other than fishing, fisherman education level, family participation in fishery product utilization, fisheries conflict, suitability of function and size of fishing vessels with legal documents, catch selectivity, destructive arrests, level of synergy of fisheries management policies and plans, plans fisheries management and stakeholder capacity. While there maining 5 attributes are categorized as insensitive. The development and implementation of constructive policies need to be carried out to improve the condition of the sustainability of elasmobranch fisheries in East Lombok Regency.
STATUS KEBERLANJUTAN PERIKANAN BAGAN PERAHU BERBASIS BIO-EKONOMI DI DESA TONIKU KABUPATEN HALMAHERA BARAT Irwan Abdu Kadir; Adi Noman Susanto; Amirul Karman; Iinpuspita Ode Ane
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 11 No. 1 (2019): Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (620.991 KB) | DOI: 10.29244/jitkt.v11i1.24241

Abstract

ABSTRAKNelayan di Desa Toniku Kabupaten Halmahera Barat, awalnya menggunakan bagan perahu untuk menangkap ikan teri Stolephorus sp. sebagai umpan perikanan pole and line, akan tetapi pada saat ini banyak tertangkap selain teri yaitu juvenil dan larva ikan, ini permasalahan yang perlu dikaji komposisi tangkapan dari bagan perahu. Tujuan penelitian  adalah  menganalisis komposisi tangkapan, by-cacth, discard, dan aspek ekonomi. Penelitian  dilaksanakan di perairan desa Toniku Kabupaten Halmahera Barat, dari tanggal 1 sampai 9 Juni 2018. Metode penelitian adalah metode survei. Obyek penelitian yaitu ikan hasil tangkapan bagan perahu. Hasil penelitian menunjukkan bahwa tangkapan bagan perahu didominasi oleh ikan target tangkap, yaitu; ikan teri (Stolephorus sp) sebesar 86,295%, tangkapan sampingan  12,335% dan tangkapan yang dibuang 1,370%. Tangkapan sampingan didominasi ikan  peperek (Leiognatus sp) yaitu 5,575%. Nilai keuntungan Usaha bagan perahu sebesar Rp 93.047.200,00/tahun dengan B/C ratio 2,96. Berdasarkan perbandingan antara target tangkap dengan by-catch dan discard, bagan perahu di Desa Toniku Kabupaten Halmahera Barat dikategorikan alat tangkap ramah lingkungan dan secara finansial menguntungkan dan layak dikembangkan (berkelanjutan). Walaupun discard rate pada bagan perahu rendah namun usaha-usaha untuk meminimumkan tetap perlu dilakukan. Salah satu usaha yang bisa dilakukan adalah sortir, dan hasil tangkapan yang tidak memiliki nilai ekonomis dibuang ke laut dalam keadaan masih hidup. ABSTRACTFishermen in Toniku Village, West Halmahera Regency, initially used a boat lift net to catch anchovy Stolephorus sp. As bait for pole and line fisheries, but at this time many were caught besides anchovy, namely juvenile and fish larvae, these are problems that need to be studied from the boat lift net. The study objective was to analyze the composition of catchs, by-catch, discard, and economic aspects. The research was carried out in the waters of Toniku village, West Halmahera Regency, from June 1 to 9, 2018. The study method is the survey method. The object of the research is the fish catch by the boat lift net. The study results show the catch of the boat's lift net was dominated by main catch, namely; anchovy (Stolephorus sp) is 86.295%, by-catch 12.335% and discard 1.370%. The bay-catch  is dominated by peperek (Leiognatus sp) which is 5.575%. Value of the boat lift net business profit of Rp. 93,047,200.00/year with B/C ratio 2.96. Based on the comparison between catch targets and by-catch and discard, the boat lift net in Toniku Village, West Halmahera Regency is categorized as environmentally friendly and financially profitable and feasible (sustainable) fishing gear. Although the discard rate on the boat chart is low, efforts to minimize it still need to be done. One effort that can be done is sorting, and catches that have no economic value are dumped into the sea while still alive.
ID THE MANTA : MANTA SIGHTINGS IN MANTA SANDY - RAJA AMPAT, WEST PAPUA-INDONESIA Hidayati Azizah; Maulita Sari Hani; Ronal Mambrasar
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 11 No. 1 (2019): Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1290.339 KB) | DOI: 10.29244/jitkt.v11i1.24774

Abstract

Manta ray (Mobula alfredi and Mobula birostris) is an endangered species that protected by international and national law. This species is vulnerable because of commercial fisheries and anthropogenic threats. These threats have impacted the species population worldwide. Raja Ampat is home for both species of the manta ray, and the area is protected with conservation status. Manta Sandy is located in Dampier Strait, is a popular dive site in Raja Ampat visited by thousands of tourist per year. It is vital to ensure the manta sightings in this area to maintain the tourist volume for local economic benefits. Utilization of photo ID and mark-recapture technique conducted to document the spots on the belly of manta ray that identify a unique pattern of each fish. This study conducted in low season from July to August 2018 for 15 days from 08.00-16.00 used two cameras of go pro hero 4 with extra battery power. The result documented time of manta sightings and species characteristic (size, sex, species, behavior, and color morphology). The camera trap recorded four manta rays where the two of them were new identified individuals.
THE EFFECT OF OCEANOGRAPHIC FACTORS ON SKIPJACK TUNA FAD VS FREE SCHOOL CATCH IN THE BONE BAY, INDONESIA: AN IMPORTANT STEP TOWARD FISHING MANAGEMENT Mukti Zainuddin; . Safruddin; Muhammad Ridwan; Andi Rani Sahni Putri; Rachmat Hidayat
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 11 No. 1 (2019): Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (961.844 KB) | DOI: 10.29244/jitkt.v11i1.24775

Abstract

The aims of this study were to compare skipjack catch between FAD and free school fishing grounds and to describe the effect of the oceanographic factors on either skipjack tuna Fish Aggregating Device (FAD) or free school.  We used a field survey method for collecting the skipjack catch and the fishing positions for both near FAD and free school areas.  Remotely sensed satellite data of sea surface temperature (SST) and chlorophyll-a concentration (Chl-a) were also used to extract the oceanographic data corresponding with both the fishing locations. To find out the vital oceanographic factors, we examined the characteristics of the oceanographic variables and skipjack catch using t-test. Results indicated that the fishing operations of skipjack tuna at FAD tended to locate areas of relatively higher Chl-a than at free school locations. We also found that skipjack tuna catch was higher near the FAD than the other area, where the Chl-a was the most significant factor that affected the difference. This study suggests that the number of skipjack tuna FAD in the coastal waters of Bone Bay should be calculated accurately to ensure and support the tuna fishing management in that study area.
THE IMPACT OF OCEANOGRAPHIC PARAMETERS CHANGES ON THE DISTRIBUTION AND ABUNDANCE OF SKIPJACK TUNA Katsuwonus pelamis IN MAKASSAR STRAIT Zabhika Dinda Istnaeni; Mukti Zainuddin
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 11 No. 1 (2019): Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2300.394 KB) | DOI: 10.29244/jitkt.v11i1.24776

Abstract

This study aimed to identify the changes of oceanographic parameters and to analyze the effects of the parameter changes on the distribution and abundance of skipjack tuna captured by purse seine fishing gear operated in Coastal Waters of Makassar Strait. This study collected fishing and field oceanographic data from May to October 2017. A survey method was used to obtain primary data (skipjack catch per unit effort/CPUE) and secondary data including sea surface temperature (SST) and Chl-a level 3 with a monthly temporal and spatial resolution of 4 km from 2007-2017, interview, and study literature. The data were processed by using SeaDAS and ArcGIS software packages and were analyzed by anomalies, standard deviation, and Generalized Additive Models (GAMs) analyses. The results showed there were anomalies for both SST and Chl-a near study area reflecting the significant changes in the oceanographic conditions. The changes for both SST and Chl-a were 1.5ºC and -0.97 mg.m-3 respectively. This study suggests that the Chl-a parameter has more significant effects on skipjack tuna distribution and CPUE than SST. Understanding of the areas of the oceanographic changes strongly supports the available habitat for the fishing operation and conservation
THE MODEL OF MACRO DEBRIS TRANSPORT BEFORE RECLAMATION AND IN EXISTING CONDITION IN JAKARTA BAY Haifa H. Jasmin; Noir P. Purba; Syawaludin A. Harahap; Widodo S. Pranowo; Mega L. Syamsudin; Ibnu Faizala
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 11 No. 1 (2019): Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1201.101 KB) | DOI: 10.29244/jitkt.v11i1.24777

Abstract

Jakarta Bay as one of an area with the densest population in Indonesia became one of the highest contamination level waters in the world includes pollution of debris. Reclamation activities in Jakarta Bay will change the water conditions, and will also affect the distribution of debris at sea. Therefore, this study conducted is to determine the movement of the marine macro debris before and on the condition of the existing reclamation island in the Bay of Jakarta. The method used is simulated by the hydrodynamic model and particle trajectory models using MIKE software. Data needed for the hydrodynamic model, namely wind, tides, bathymetry, and shoreline, while for the trajectory of the particles using a data type of debris, marine macro debris weight, and debris flux. The analysis was performed for hydrodynamic model simulation results and comparison of particle trajectory models. Hydrodynamics simulations indicate if a reclamation island formation does not change significantly in the offshore area, but a simple change in the surface current pattern of the reclamation area, it also causes a decrease in the flow velocity of ± 0.002 to 0.02 m/s at some point. Macro debris particle trajectory simulation shows if after reclamation, macro debris tends to accumulate in the eastern Jakarta Bay in the rainy season (January), as well as in the western and eastern regions during the dry season (July).
ANALYSIS OF THE SEASONAL IMPACT ON ISOTOPIC BASELINES OF DISSOLVED INORGANIC CARBON (DIC) IN COASTAL WATERS SPERMONDE, SOUTH SULAWESI Wa Ode Rustiah; Alfian Noor; . Maming; Muhammad Lukman
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 11 No. 1 (2019): Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (437.936 KB) | DOI: 10.29244/jitkt.v11i1.24778

Abstract

Stable carbon isotopes have been commonly used as indicators for assessing environmental changes in aquatic ecosystems. They can be used to study the dynamics of organic matter as for understanding the overall functioning of the ecosystem, the connectivity of estuaries with terrestrial and marine coastal habitats. The objective of this study is determining the seasonal natural effects over isotopic (13C/12C) baselines in monitoring CO2 storage in dissolved inorganic materials in Spermonde waters on the west coast of South Sulawesi to some outermost island. The results show that the stable carbon isotopic of DIC (d13C-DIC) in the wet season varied between -5.36 ‰ and -7.74 ‰. These value are higher than on dry season (-4.34 ‰ to -6.82 ‰). Likewise, DIC concentration in the rainy season ranged between 9.5 mg C/L and 11.7 mg C/L, while in the dry season it varied from 8.5 mg C/L to 9.3 mg C/L. The d13C-DIC and DIC concentrations decreased towards offshore, up to some of the outer islands. Increasing in the d13C-DIC in Spermonde waters indicate that the DIC is most likely enriched by atmospheric CO2(g), which is outnumbered those of aquatic photosynthesis. This study shows that different levels and composition of d13C-DIC stretch along different rivers are attributable to the varying landscapes and quality of organic matters.
OFFSHORE FLOATING MARINE FISH CAGE AQUACULTURE DEVELOPMENT PLANNING EVALUATION BASED ON HYDRO-OCEANOGRAPHY CONDITIONS IN SABANG BAY, WEH ISLAND Ulung Jantama Wisha; Guntur Adhi Rahmawan; Koko Ondara; Wisnu Arya Gemilang; Ruzana Dhiauddin; Nia Naelul Hasanah Ridwan; . Ilham
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 11 No. 1 (2019): Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2280.584 KB) | DOI: 10.29244/jitkt.v11i1.24780

Abstract

Sabang coastal bay becomes the area of significance where the development centered in the semi-enclosed area. Sabang Bay is well-known as the center of marine economy (Aquaculture, Harbor, and marine tourism). Recently, there is a planning initiated by Ministry of Marine Affairs and Fisheries (MMAF) to install the floating fish cage aquaculture (KJA) in the offshore area of Sabang Bay which the planning becomes a controversy between local people, local government, and researchers as well. This study aims to evaluate and discuss the impacts that will be happened if KJA is applied. Field surveys on hydro-oceanography aspects were done measuring currents, tides, waves, winds, bathymetry, water quality, as well as tourism condition. Based on those hydro-oceanography conditions, Sabang Bay categorized into calm water area where the sea current is weak (ranging from 0-0.12 m/s), whilst the high values of pH, salinity, and temperature are identified within the bay during low tidal condition. If KJA is installed within the bay, automatically it will pollute the water due to the accumulation of remaining fish feeder wastes. Moreover, within the bay, there are several attractive marine tourisms such as diving sites, the conservation area of Sophie Rickmers shipwreck site, and hot bubble (fumaroles hydrothermal vent). The presence of KJA will possibly disrupt marine tourism activities so that the implementation of KJA needs to be considered the impacts before installation.
STRUKTUR KOMUNITAS HUTAN MANGROVE PADA KAWASAN MEMPAWAH MANGROVE PARK DI DESA PASIR MEMPAWAH HILIR Amir Suharto Rumalean; Frida Purwanti
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 11 No. 1 (2019): Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1031.162 KB) | DOI: 10.29244/jitkt.v11i1.25704

Abstract

ABSTRAKMangrove pada kawasan Mempawah Mangrove Park (MMP) telah memberikan dampak positif bagi masyarakat dan lingkungan baik secara ekonomi maupun ekologi. Penelitian ini bertujuan untuk mengetahui keunggulan vegetasi mangrove pada kawasan MMP, hal ini dilakukan karena kurangnya data informasi tentang mangrove pada kawasan tersebut. Penelitian ini menggunakan metode survei dan observasi yang terdiri dari identifikasi dan pengukuran. Hasil penelitian menunjukkan bahwa nilai INP pada kawasan MMP sebesar 300% yang terdiri dari Avicennia marina 182,65%, Avicennia officinalis 34,72%, Rhizophora mucronata 54,93%, Nypa fruticans 22,85%, dan Terminalia catappa 4,85%. Tingkat kerapatan mangrove pada kawasan MMP masuk dalam kategori sedang dengan nilai 1093 pohon/ha. Indeks kesesuaian kawasan wisata pada kawasan MMP sebesar 81,82% atau masuk dalam kategori “Sesuai (S2)”, yang meliputi tutupan/ketebalan mangrove, kerapatan, obyek biota dan pasang surut. Nilai INP dan nilai tingkat kesesuaian kawasan menunjukkan bahwa struktur hutan mangrove pada kawasan MMP dalam kondisi baik dan dapat dikembangkan menjadi obyek wisata mangrove.  ABSTRACTMangroves in Mempawah Mangrove Park (MMP) area have had a positive impact on society and the environment both economically and ecologically. This study aims to determine superiority of mangrove vegetation in the MMP area, this is done because lack of data information about mangroves. This research used survey and observation methods which consist of identification and measurement. The results showed INP value is 300% consisting of Avicennia marina 182.65%, Avicennia officinalis 34.72%, Rhizophora mucronata 54.93%, Nypa fruticans 22.85%, and Terminalia catappa 4.85% . Density of mangroves in the MMP area falls into the medium category with a value of 1093 trees / ha. The index of tourist areas in the MMP region was 81.82% or included in the category of "Suitability (S2)". Which includes the cover / thickness of mangrove, density, objects of biota and tides. INP value and level of suitability indicate the structure of mangrove forest in MMP area is good condition and can be developed into a mangrove tourism object.

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