scholarly journals Keanekaragaman Jenis Plankton pada Akar dan Perairan Sekitar Mangrove Desa Lembar Selatan, Kabupaten Lombok Barat

2021 ◽  
Vol 1 (1) ◽  
pp. 1-8
Author(s):  
Ibadur Rahman ◽  
Chandrika Eka Larasati ◽  
Ayu Adhita Damayanti
Keyword(s):  
Sampling Method ◽  
Environmental Changes ◽  
Mangrove Ecosystem ◽  
Plankton Community ◽  
Purposive Sampling ◽  
Mangrove Area ◽  
Mangrove Ecosystems ◽  
Water Conditions ◽  
Mangrove Roots ◽  
Plankton Species

The mangrove ecosystem is one of the ecosystems in the estuary area that is unique and very sensitive to environmental changes. The large number of aquaculture businesses around Cemare Hamlet, West Lombok Regency have resulted in many mangrove areas being converted into pond cultivation locations. This will have an impact on the life of mangrove ecosystems such as plankton. This study aims to determine the abundance of plankton species around the mangrove area of ??Dusun Cemare, Sheet Selatan Village, West Lombok Regency. The research was conducted in May-October 2019 using a purposive sampling method by determining 7 stations to represent water conditions. Plankton analysis using the Lackey drop microtranscting method. The results showed that the mangrove ecosystem in Dusun Cemare was composed of 4 types, namely: Rhizophora sp., Avicenia sp., Bruguiera sp., And Soneratia sp. The plankton community in mangrove waters is composed of 13 types, while the abundance of plankton species (periphyton) attached to the mangrove roots consists of 6 types. The composition of plankton species which tends to be high indicates that the mangrove waters of Dusun Cemare are still feasible to sustain the survival of the associated biota in it.

scholarly journals Diversitas Gastropoda pada Akar Mangrove di Pulau Sirandah, Padang, Sumatera Barat

2018 ◽  
Vol 5 (1) ◽  
pp. 34
Author(s):  
Hirzan Riyandi ◽  
Indra Junaidi Zakaria ◽  
Izmiarti Izmiarti
Keyword(s):  
Mangrove Forest ◽  
Sampling Method ◽  
Diversity Indices ◽  
Mangrove Ecosystem ◽  
Survey Method ◽  
Purposive Sampling ◽  
Negative Effect ◽  
Mangrove Roots

Currently, there are a lot of activities in Sirandah Island, such as tourism activities and deforestation to support the activities. Mangrove forest distruction makes a useable area might have negative effect to mangrove ecosystem itself or mollusc community. This research was conducted on mangrove roots area from February until October 2016. The aim of this research is to know the diversity of Gastropods on the roots of the mangrove. This research was conducted using survey method and purposive sampling method to collecting data. We recorded 8 genera of Gastropods belong to 8 families, named Cerithium, Conus, Ellobium, Littorina, Melongena, Nerita, Cymatium and Turbo. The highest abundance was found in the genus of  Littorina with 59.33 individuals/tree. Based on location, abundance ranged from 4.33-60.33 individuals/tree with the highest abundance on mangrove roots of Barringtonia asiatica. Diversity indices of Gastropods on mangrove roots in Sirandah Island ranged from 0.77 to 1.42 which is relative low range.

scholarly journals Kepadatan Populasi Ikan Gelodok Di Hutan Mangrove Desa Penunggul Kecamatan Nguling Kabupaten Pasuruan

2020 ◽  
Vol 5 (2) ◽  
pp. 66-71
Author(s):  
Moch. Chasan Basri ◽  
Hari Santoso ◽  
Saimul Laili
Keyword(s):  
Environmental Conditions ◽  
Mangrove Forest ◽  
Sampling Method ◽  
Abiotic Factors ◽  
Mangrove Ecosystem ◽  
Northern Coast ◽  
Mangrove Forests ◽  
Purposive Sampling ◽  
Mangrove Area ◽  
The One

  Mangrove forests are the one of the coastal ecosystems; especially the northern coast and many are founded in the surrounding fish ecosystems. That organism is the one of the fauna which mangrove ecosystem constituent. The aim of this study was to determine the density and abundance of the population of Gelodok fish at mangrove areas in Penunggul Village, Nguling District. This study used a purposive sampling method from three stations and each station has three plots and three replications in each plot. The results showed that the density of frog fish in the mangrove forest area of ​​Nguling village at station 1 was 3 as well as at station 2 and 3 respectively 2 and 1. At station 1 there were three species, namely Baleopthalmus boddarti, Periopthalmus dipus, Periophthalmus Gracilis, station 2, there were two species; Baleopthalmus boddarti, Periophthalmus Gracilis, and station 3 there were three species namely Baleopthalmus boddarti, Periopthalmodon schlosseri, Periopthalmus dipus. The differences in the results of the study, environmental conditions and abiotic factors influence the density of fish in the mangrove area and at the station 1 the density is highe. Keywords: Gelodok fish, mangrove forest, population ABSTRAK Hutan mangrove merupakan salah satu ekosistem daerah pantai terutama pantai utara dan banyak di temui ikan Gelodok di sekitar ekositem ini. Organisme tersebut merupakan salah satu fauna penyusun ekositem mangrove. Tujuan penelitian ini untuk mengetahui kepadatan dan kemelimpahan populasi ikan Gelodok kawasan mangrove desa Penunggul Kecamatan Nguling. Penelitian ini menggunakan metode purposive sampling dari tiga stasiun dan setiap stasiun terdapat tiga plot dengan ulangan tiga kali dalam setiap plot. Hasil penelitian menunjukkan bahwa kepadatan ikan gelodok di kawasan hutan mangrove desa Nguling rata-rata pada stasiun 1 adalah 3, di satsiun 2; 2 dan 3; 1. Pada stasiun 1 terdapat tiga spesies yaitu Baleopthalmus boddarti, Periopthalmus dipus, Periophthalmus Gracilis , stasiun 2 terdapat dua spesies yaitu Baleopthalmus boddarti, Periophthalmus Gracilis dan stasiun 3 terdapat tiga spesies yaitu Baleopthalmus boddarti, Periopthalmodon schlosseri, Periopthalmus dipus. Perbedaan hasil penelitian, kondisi lingkungan dan faktor abiotik mempengaruhi kepadatan ikan Gelodok di kawasan mangrove, sehingga pada stasiun 1 diperoleh kepadatan  lebih tinggi. Kata kunci: ikan Gelodok, hutan mangrove, kepadatan populasi    

scholarly journals HUBUNGAN SUBSTRAT DOMINAN DENGAN KELIMPAHAN GASTROPODA PADA HUTAN MANGROVE KULONPROGO, YOGYAKARTA (The Relation of dominant substrate to Gastropods Abundance in the Mangrove Forest of Kulonprogo, Yogyakarta)

2017 ◽  
Vol 13 (1) ◽  
pp. 19
Author(s):  
Rendra Rini Rismatul Chusna ◽  
Siti Rudiyanti ◽  
Suryanti Suryanti
Keyword(s):  
Mangrove Forest ◽  
Research Method ◽  
Sampling Method ◽  
Mangrove Ecosystem ◽  
Accurate Description ◽  
Research Use ◽  
Sand Fraction ◽  
Purposive Sampling

 Substrat mangrove terdiri atas fraksi pasir (sand), lumpur (silt), dan liat (clay). Gastropoda adalah kelompok hewan dari filum moluska yang hidup di jenis substrat dari kasar ke halus. Kelimpahan gastropoda dipengaruhi oleh substrat dasar yang merupakan habitat dari gastropoda, serta kandungan nutrien yang berbeda pada tiap fraksi akan mempengaruhi kelimpahan Gastropoda yang berada di dalamnya. Oleh karena itu, perlu dilakukan penelitian mengenai hubungan substrat dengan kelimpahan Gastropoda, karena Gastropoda salah satu faktor penting untuk menjaga keseimbangan ekologi pesisir khususnya ekositem mangrove. Penelitian  dilakukan di Hutan Mangrove Kulonprogo Yogyakarta bertujuan untuk mengetahui tipe substrat, kelimpahan Gastropoda dan hubungan kedua variabel tersebut. Penelitian  dilakukan pada bulan April sampai dengan  Mei 2017. Metode yang digunakan adalah metode deskriptif yaitu metode penelitian yang memberikan gambaran secara sistematis, faktual, akurat mengenai faktor-faktor dan sifat-sifat dari suatu daerah atau populasi. Metode pengambilan sampel substrat dan Gastropoda menggunakan metode Purposive Sampling Method pada 3 stasiun berbeda yaitu stasiun I pada bagian dekat pemukiman penduduk, stasiun II pada bagian dekat tambak, dan stasiun III pada bagian muara sungai. Hasil penelitian menunjukkan jenis substrat pada tiap stasiun adalah lempung dan lempung berdebu yang didominasi oleh fraksi lumpur (silt) dan pasir (sand). Jenis Gastropoda yang didapatkan berasal dari genus Littoraria, Natica, Faunus, Cerithium, Neritina, Polinices, Conus, Telescopium, dan Nerita. Meningkatnya prosentase fraksi pasir (sand) dan liat (clay) akan diikuti oleh meningkatnya kelimpahan Gastropoda, sedangkan untuk fraksi lumpur (silt) akan sebaliknya yaitu meningkatnya fraksi lumpur akan diikuti oleh menurunnya kelimpahan Gastropoda. Kata kunci: Tipe Substrat, Gastropoda, Mangrove, Kulonprogo  Mangrove substrates formed by sands, silts, and clays. Gastropods is a group of animals of the phylum of mollusks lives on the type of substrate from rough to smooth. Gastropod abundance is affected by substrate which habitat of gastropods and nutrients influencing the distribution of gastropods. Therefore, it needs a deeper research about the correlation of substrate and the amount of gastropods , because gastropods are the importants factor of mangrove ecosystem. The research helds in Kulonprogo Mangrove Forest, Yogyakarta, and the goals are to know the type of substrate, the amount of gastropods, and the correlation among them. This research held on April – Mei 2017. This research use descriptivemethod wich research method that provide a systematic, factual, accurate description of the factors and quality an area or population. The method on sampling sediments and gastropods is purposive sampling in 3 station. Station 1 near the settlement, station 2 near ponds, station 3 on the estuary. The results of this research shows that the sediments on every station are clay and dusty clay, which is dominated by silt,and sand fraction. The gastropods that obtained are Littoraria, Natica, Faunus, Cerithium, Neritina, Polinices, Conus, Telescopium, and Nerita. The percentage increasing on sands and clays fraction would be more gastropods. Otherwise on silts fraction.   

scholarly journals STRATEGI PENGELOLAAN EKOSISTEM HUTAN MANGROVE DI NEGERI AMAHAI

2021 ◽  
Vol 17 (1) ◽  
pp. 57-67
Author(s):  
Achmad J Ely ◽  
Lolita Tuhumena ◽  
Juanita Sopaheluwakan ◽  
Yvonne Pattinaja
Keyword(s):  
Mangrove Forest ◽  
Swot Analysis ◽  
Management Strategies ◽  
Sampling Technique ◽  
Mangrove Ecosystem ◽  
Purposive Sampling ◽  
Community Needs ◽  
Mangrove Area ◽  
External Threats ◽  
Nutritional Needs

Mangrove forest is a very productive and beneficial ecosystem. Mangrove forest resources in Amahai Village will be increasingly exploited along with the increasing population and economic pressure. The aim of this research is to identify the forms of use by the community in the mangrove area, and to recommend mangrove ecosystem management strategies in Amahai Village. This research was conducted in the mangrove forest area of ​​Amahai Village, Central Maluku Regency from September to November 2018. Sampling was carried out by purposive sampling technique of 36 respondents. The analytical method used is data analysis of descriptive qualitative to identify forms of utilization by the community. SWOT analysis is used to analyze the management strategies of mangrove ecosystem on Amahai Village by identifying internal strengths and weaknesses as well as opportunities external threats. The results obtained five forms of utilization carried out in the mangrove area of ​​Amahai Village, those are fishing, collecting sea cucumbers, gleaning shellfish (bameti), tourism (recreation), and research. There are eight management strategies produced, namely 1) implementing government policies to maintain the potential of mangrove ecosystem resources in order to meet community needs and regional income; 2) utilizing the potential of mangrove ecosystem resources for ecotourism activities and support science and technology; 3) revitalization of customary institutions as an effort to manage mangrove ecosystem areas; 4) organizing resource processing activities in the mangrove ecosystem to meet nutritional needs and increase community income; 5) development of mangrove areas with an environmental insight; 6) improving MCS (Monitoring, Controling and Surveillance); 7) improving coordination among stakeholders; and 8) increasing community knowledge and awareness about the function of mangrove ecosystems and the skills of the communities around the mangrove area.   ABSTRAK Hutan mangrove merupakan suatu ekosistem yang sangat produktif dan memberikan manfaat. Sumberdaya hutan mangrove di Negeri Amahai akan semakin tereksploitasi seiring dengan meningkatnya jumlah penduduk dan desakan ekonomi. Tujuan penelitian ini adalah untuk mengidentifikasi bentuk-bentuk pemanfaatan yang dilakukan oleh masyarakat di kawasan mangrove, serta merekomendasikan strategi pengelolaan ekosistem mangrove di Negeri Amahai. Penelitian ini dilaksanakan di kawasan hutan mangrove Negeri Amahai, Kabupaten Maluku Tengah pada bulan September hingga November 2018. Pengambilan sampel dilakukan dengan teknik purposive sampling terhadap responden sebanyak 36 orang. Metode analisis yang digunakan adalah analisis data deskriptif kualitatif untuk mengidentifikasi bentuk-bentuk pemanfaatan yang dilakukan masyarakat. Analisa SWOT digunakan untuk menganalisis strategi pengelolaan ekosistem mangrove Negeri Amahai dengan mengideintifikasi kekuatan dan kelemahan internal serta peluang dan ancaman eksternal. Hasil penelitian diperoleh lima bentuk pemanfaatan yang dilakukan pada kawasan mangrove Negeri Amahai yaitu penangkapan ikan, pengumpulan teripang, bameti, wisata (rekreasi), serta penelitian. Terdapat delapan strategi pengelolaan yang dihasilkan yaitu 1) mengimplementasikan kebijakan pemerintah untuk menjaga potensi sumberdaya ekosistem mangrove guna pemenuhan kebutuhan masyarakat dan pendapatan daerah; 2) memanfaatkan potensi sumberdaya ekosistem mangrove untuk kegiatan ekowisata serta mendukung ilmu pengetahuan dan terknologi; 3) revitalisasi kelembagaan adat sebagai upaya mengelola kawasan eksoistem mangrove; 4) menyelenggarakan kegiatan pengolahan sumberdaya pada ekosistem mangrove untuk memenuhi kebutuhan gizi dan meningkatkan pendapatan masyarakat; 5) pengembangan kawasan mangrove yang berwawasan lingkungan; 6) peningkatan monitoring, controling and surveilance; 7) meningkatkan koordinasi antar stakeholder; dan 8) meningkatkan pengetahuan dan kesadaran masyarakat tentang fungsi ekosistem mangrove serta keterampilan masyarakat sekitar daerah mangrove   Kata Kunci: Strategi pengelolaan, ekosistem mangrove, SWOT, keberlanjutan, Negeri Amahai

scholarly journals KESESUAIAN DAN DAYA DUKUNG EKOWISATA MANGROVE DI DESA KURAU DAN DESA KURAU BARAT KABUPATEN BANGKA TENGAH

2019 ◽  
Vol 13 (2) ◽  
pp. 94-104
Author(s):  
Meli Zulia ◽  
Okto Supratman ◽  
Suci Puspita Sari
Keyword(s):  
Carrying Capacity ◽  
Sampling Method ◽  
Secondary Data ◽  
Primary Data ◽  
Purposive Sampling ◽  
Mangrove Ecosystems ◽  
Suitability Index ◽  
Calculation Results ◽  
Index Value ◽  
Descriptive Method

ABSTRACT Mangrove ecosystems are one ecosystem that is vulnerable damaged. Mangrove ecotourism is one of the efforts that can do to reduce damage in the utilization of mangrove ecosystems.This study aims to calculate the suitability and carrying capacity of mangrove ecotourism in the  Kurau Village and West Kurau Village, Central Bangka Regency. This research was conducted in March 2019 at the Mangrove ecotourism area of ​​Kurau Village and West Kurau Village. The study location determined using a purposive sampling method consisting of 3 substations in one location to get primary data and secondary data. Descriptive method was used to analyze the Tourism Suitability Index (IKW) and the Regional Carrying Capacity (DDK). The calculation results show that the mangrove ecotourism area of ​​Kurau Village is included in the suitable category (S2) with a Suitability Index value is 74.36% and the Regional Carrying Capacity (DDK) is 44 people per day (10 hours  / day) and West Kurau Village is included in suitable category (S2) with a Suitability Index value of 74.36% and the Regional Carrying Capacity (DDK) is 55 people per day (10 hours open / day).

scholarly journals Komunitas Gastropoda Mangrove di Sungai Perpat dan Bunting, Kecamatan Belinyu, Kabupaten Bangka

2021 ◽  
Vol 6 (2) ◽  
pp. 85
Author(s):  
Eka Yuliawati ◽  
Budi Afriyansyah ◽  
Nova Mujiono
Keyword(s):  
Species Composition ◽  
Environmental Change ◽  
Dominant Species ◽  
Mangrove Ecosystem ◽  
Species Number ◽  
Mangrove Area ◽  
Number Of Species ◽  
Mangrove Ecosystems ◽  
Number Of Individuals

<strong>Mangrove gastropod community in Perpat and Bunting Rivers, Belinyu District, Bangka Regency</strong>. Perpat and Bunting in Bangka Regency have an adequate and natural mangrove ecosystems. However, studies on the structure of the gastropod community in this ecosystem is lacking. This study aimed to discover the structure of the gastropod community in the mangrove ecosystem. This study was carried out from October to November 2019 in riverine mangrove area located in Perpat and Bunting Rivers, District Belinyu, Bangka Regency. Samples were taken from 10 x 10 m plot from six observed stations. A total of 578 individuals of gastropoda were collected, comprised of seven families and 14 species. Number of species ranged from 4 to 9, while number of individuals ranged from 35 to 214. <em>Cerithidea quoyii</em> was a dominant species with 270 individuals (47%) and found in all stations. Gastropods community was in labile condition and prone to environmental change. Species composition of gastropods were similar in both rivers with nine identical species. However, epifaunal species were found separately from arboreal species

scholarly journals Estimasi Simpanan Karbon Pada Ekosistem Mangrove Di Desa Pasar Banggi Dan Tireman, Kecamatan Rembang Kabupaten Rembang

2019 ◽  
Vol 8 (1) ◽  
pp. 62-68
Author(s):  
Riani Mardliyah ◽  
Raden Ario ◽  
Rudhi Pribadi
Keyword(s):  
Carbon Storage ◽  
Sampling Method ◽  
Plant Biomass ◽  
Mangrove Ecosystem ◽  
The Body ◽  
Research Station ◽  
Body Parts ◽  
Ecological Functions ◽  
Purposive Sampling ◽  
Mangrove Trees

Ekosistem mangrove memiliki fungsi ekologis sebagai penyerap dan penyimpan karbon. Mangrove menyerap CO2 pada saat proses fotosintesis, kemudian mengubahnya menjadi karbohidrat dengan menyimpannya dalam bentuk biomasa. Tujuan penelitian untuk mengestimasi simpanan karbon pada tegakan dan substrat mangrove yang berada di Desa Pasar Banggi dan Desa Tireman, Kabupaten Rembang. Pengambilan sampel dilakukan pada bulan Juni - Juli 2018. Metode yang digunakan yaitu purposive sampling method dan eksploratif, dengan dasar pertimbangan berupa jenis, kerapatan serta diameter pohon mangrove. Pengambilan sampel dilakukan di tiga stasiun dengan kondisi rapat, sedang dan jarang. Setiap stasiun penelitian dibagi menjadi tiga plot penelitian, pengukuran diameter pohon dilakukan pada transek ukuran 10 x 10 m, diameter yang di ukur pada setiap plot yaitu hanya kategori pohon (diameter ≥ 5 cm). Berdasarkan hasil penelitian, didapat bahwa simpanan karbon pada tegakan mangrove di Desa Pasar Banggi sebesar 9.620,451 ton/ha, dan Desa Tireman sebesar 4.633,618 ton/ha, sedangkan estimasi simpanan karbon pada substrat mangrove di Desa Pasar Banggi sebesar 920,982 ton/ha dan Desa Tireman sebesar 471,929 ton/ha. Mangrove ecosystems have ecological functions as carbon sinks and stores. Mangroves absorb CO2 during photosynthesis, then convert it to carbohydrates by storing it in the form of biomass in the body parts of mangrove plants. Research on the estimation of carbon stocks is very necessary to support the improvement of world climate. The sampling was conducted on June 2018 until July 2018. This research used  purposive sampling and explorative method, with the consideration of the type, density and diameter of mangrove trees. Conducted in three stations with varying in the mangrove ecosystem conditions. Each research station was divided into three research plots, tree diameter measurements were carried out on 10 x 10 m transects, the diameter measured in each plot was only trees (≥ 5 cm diameter). The result of this research, it is found that carbon storage in mangrove stands Pasar Banggi Village is 9,620,451 ton/ha, and Tireman Village is 4,633,618 ton/ha. While  estimated carbon storage the mangrove substrate in Pasar Banggi Village is 920,982 ton/ha and Tireman Village is 471,929 ton/ha. These result that estimates carbon storages in mangrove stands are greater than estimates of carbon storage on mangrove substrate. The estimation of carbon storage in the mangrove stands increases with increasing of plant biomass and mangrove density, while estimates of carbon storage on the substrate are tsuspected to be more influenced by organic matterial and the location reseach. 

scholarly journals Kajian Valuasi Ekonomi Ekosistem Hutan Mangrove Di Desa Kaliwlingi Dan Desa Sawojajar, Kabupaten Brebes, Jawa Tengah

2019 ◽  
Vol 8 (1) ◽  
pp. 94-106
Author(s):  
Yonanda Alodea Christy ◽  
Wilis Ari Setyati ◽  
Rudhi Pribadi
Keyword(s):  
Forest Ecosystem ◽  
Mangrove Forest ◽  
Sampling Method ◽  
Economic Value ◽  
Mangrove Ecosystem ◽  
Use Value ◽  
Purposive Sampling ◽  
Managing Strategy ◽  
Total Economic Value ◽  
Economic Function

Ekosistem hutan mangrove merupakan ekosistem yang berada di kawasan pesisir yang memiliki fungsi fisik, fungsi ekologi dan fungsi ekonomi. Dampak kerusakan ekosistem hutan mangrove dapat dipulihkan dengan adanya kegiatan rehabilitasi dan konservasi di kawasan hutan mangrove. Pemanfaatan nilai ekonomi dari ekosistem hutan mangrove memerlukan perhitungan valuasi ekonomi guna melihat aktivitas ekonomi yang ada pada ekosistem hutan mangrove. Tujuan penelitian ini yaitu untuk menghitung nilai total ekonomi di ekosistem hutan mangrove dan merekomendasikan strategi pengembangan dan pengelolaan kawasan ekosistem mangrove di Desa Kaliwlingi dan Desa Sawojajar, Kabupaten Brebes, Jawa Tengah. Metode penelitian yang digunakan adalah metode deskriptif dan eksploratif. Penentuan lokasi penelitian dilakukan dengan metode purposive sampling. Sampel penelitian yang diambil adalah masyarakat yang mempunyai mata pencaharian berkaitan dengan keberadaan ekosistem hutan mangrove secara langsung dan tidak langsung. Berdasarkan hasil penelitian menunjukan nilai total ekonomi ekosistem hutan mangrove di Desa Kaliwlingi adalah sebesar Rp 12.912.098.100 yang didapatkan dari total use value sebesar Rp 9.927.638.100 dan total non use value sebesar Rp 2.984.460.000. Nilai total ekonomi di Desa Sawojajar adalah sebesar Rp 5.519.784.145 dengan jumlah nilai use value sebesar Rp 3.670.377.145 dan nilai non use value sebesar Rp 1.849.407.000. Mangrove forest ecosystem are the ecosystem that is located in coastal environment that have a physical function, ecological function and economic function. The effect of damaged can be heal if there is a rehabilitation and conservation in mangrove ecosystem. The value of economic from mangrove ecosystem needs a calculation of valuation to look up the economic activity in mangrove forest ecocsystem. The aim of the research are calculate the economic total value of mangrove forest ecosystem and recommend a developing and managing strategy of mangrove ecosystem at Kaliwlingi Village and Sawojajar village. The method of the research is use descriptive and explorative method. The location of the research conducted by purposive sampling method. The sample of the study is the residents related to the existence of the mangrove ecosystem directly and indirectly. Based on the results of the research showed the total economic of mangrove forest ecosystem in Kaliwlingi Village is Rp 12.912.098.100 that comes from the total amount of use value Rp 9.927.638.100 and non use value Rp 2.984.460.000. The total economic value in Sawojajar village is Rp 5.519.784.145 that comes from the total amount of use value Rp 3.670.377.145 and non use value Rp 1.849.407.000.

scholarly journals Mangrove Mapping and Above-Ground Biomass Change Detection using Satellite Images in Coastal Areas of Thai Binh Province, Vietnam

2019 ◽  
Vol 3 (2) ◽  
pp. 248 ◽  
Author(s):  
Long Duc Nguyen ◽  
Cuong Trong Nguyen ◽  
Hoa Sy Le ◽  
Bao Quang Tran
Keyword(s):  
Satellite Images ◽  
Land Reclamation ◽  
Accuracy Assessment ◽  
Mangrove Ecosystem ◽  
Mangrove Forests ◽  
Above Ground Biomass ◽  
Tropical Regions ◽  
Mangrove Area ◽  
Ground Biomass ◽  
Mangrove Ecosystems

Mangroves are recognized as a highly valuable resource due to their provision of multiple ecosystem services. Therefore, mangrove ecosystems mapping and monitoring is a crucial objective, especially for tropical regions. Thai Binh province is one of the most important mangrove ecosystems in Vietnam. The mangrove ecosystem in this province has faced threats of deforestation from urban development, land reclamation, tourism activities, and natural disasters. Recently, to maintain the fundamental functions of the ecosystems, a large mangrove area was planted in Thai Binh. The aim of this research is to detect the change in the mangrove areas and to create an aboveground biomass map for mangrove forests in Thai Binh province. Landsat and Sentinel-2 satellite images from 1998 to 2018 were analysed using the supervised classification method to detect mangrove area change. Mangrove Above-ground Biomass (AGB) was estimated using linear regression between vegetation indices and field AGB survey. The accuracy assessment for the classified images of 1998, 2003 and 2007, 2013 and 2018 are 93%, 86%, 96%, 94% and 91% respectively with kappa of 0.8881, 0.7953, 0.9357, 0.9114 and 0.8761. The mangrove cover in the study area was estimated at 5874.93 ha in 1998. This figure decreased significantly to 4433.85 ha in 2007, before recovery began to take place in the study area, which was estimated at 6587.88 ha in 2018. In 1998, the average AGB in this study area was 22.57 ton/ha, and in 2018 it was 37.74 ton/ha with a standard error of 12.41 ton/ha and the root mean square error (RMSE) was ±12.08 ton/ha.

scholarly journals ANALISIS NILAI MANFAAT DAN KERUGIAN DARI PEMANFAATAN EKOSISTEM MANGROVE DI PULAU TANAKEKE, SULAWESI SELATAN

2019 ◽  
Vol 14 (1) ◽  
pp. 1
Author(s):  
Fibrianis Puspita Anhar ◽  
Aceng Hidayat ◽  
Meti Ekayani
Keyword(s):  
Environmental Changes ◽  
Economic Valuation ◽  
Economic Value ◽  
Mangrove Ecosystem ◽  
The Other ◽  
Primary Data ◽  
Mangrove Area ◽  
Total Economic Value ◽  
Economic Contribution

Pada tahun 1980an, Pulau Tanakeke memiliki kawasan ekosistem mangrove seluas kurang lebih 1.770 hektar. Namun, dalam kurun 1980an-2000an, luasan tersebut berkurang hingga 60 persen akibat dari pemanfaatan yang tidak terkendali oleh masyarakat sehingga terjadi perubahan lingkungan. Tulisan ini bertujuan mengkaji posisi sumber daya mangrove terhadap pengelolaan saat ini dengan mengestimasi nilai manfaat dan kerugian yang diterima masyarakat dari adanya pemanfaatan mangrove. Pengumpulan data primer dilakukan melalui metode survei dengan 40 responden pemanfaat mangrove. Analisis data menggunakan teknik valuasi ekonomi sumber daya alam dan lingkungan. Hasil analisis yang diperoleh menunjukkan bahwa nilai manfaat ekonomi ekosistem mangrove masih lebih besar dibandingkan dengan nilai kerugian yang timbul. Hasil analisis tersebut berimplikasi pada dua hal: 1) yaitu di satu sisi membuktikan bahwa ekosistem mangrove di Pulau Tanakeke memberikan kontribusi ekonomi yang cukup besar bagi masyarakat, 2) tetapi di sisi lain, nilai manfaat yang cukup besar tersebut dapat menjadi insentif bagi masyarakat untuk semakin ekspansif mengeksploitasi ekosistem mangrove sehingga dapat menjadi peluang ancaman bagi kelestarian ekosistem mangrove di Pulau Tanakeke apabila tidak dikelola dengan seksama.Title: Analysis of Benefits and Losses Value of Mangrove Ecosystem Uses in Tanakeke Island, South SulawesiIn the 1980s, Tanakeke Island had around 1,770 hectares of mangrove area. However, within a period of time 1980s-2000s, this area has reduced nearly 60 percent due to uncontrolled utilization by community resulting in environmental changes. This study aims to examine the position of mangrove resource towards existing management by estimating benefits and losses of mangrove utilization. Primary data were collected through a survey from 40 respondents of mangrove beneficiaries. Data were analysed using the resource and enviromental economic valuation techniques. The results indicate that the total economic value of mangrove ecosystem is greater than the losses value. This finding led to two implications: on one side, it is proved that the mangrove ecosystem in Tanakeke Island gives economic contribution in a considerable amount to the community. However, on the other side, this high value of benefits leads to an increasing exploitation of the mangrove ecosystem. Therefore, this condition could be a threat to the sustainability of mangrove ecosystem in Tanakeke Island if it is not managed carefully

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