scholarly journals Kekhasan Morfologi Spesies Mangrove di Gili Sulat

2014 ◽  
Vol 14 (2) ◽  
Author(s):  
Agil Al Idrus, I Gde Mertha Gito Hadiprayitno, dan M. Liwa Ilhamdi
Keyword(s):  
Avicennia Marina ◽  
Survey Method ◽  
Rhizophora Mucronata ◽  
Mangrove Species ◽  
Rhizophora Stylosa ◽  
Rhizophora Apiculata ◽  
Specific Morphology ◽  
Sonneratia Alba ◽  
Result Show

ABSTRAKTujuan penelitian ini adalah menganalisis kekhasan morfologi spesies mangrove diGili Sulat. Pengumpulan data dalam penelitian ini menggunakan metode survey melaluipengamatan langsung secara in situ terhadap morfologi populasi-populasi dalam spesiesmangrove di lapangan. Data yang diperoleh dianalisis secara kualitatif dan kuantitatifkemudian deskripsikan untuk menggambarkan kekhasan morfologi spesies mangrove diGili Sulat. Hasil penelitian menunjukkan terdapat tujuh spesies mangrove komponenmayor yang populasinya menunjukkan morfologi yang khas di Gili Sulat, yaitu Bruguieragymnorrhiza, Rhizophora mucronata, Rhizophora stylosa, Rhizophora apiculata, Ceriopstagal, Sonneratia alba, dan Avicennia marina. Kekhasan morfologi spesies mangrovetersebut mencakup karakter tinggi pohon, warna dan diameter batang, struktur akar danjumlah bunga.Kata kunci: kekhasan, mangrove, morfologiABSTRACTThe aims of this reseach is to analyze specific morphology of species mangrove inGili Sulat. Data collected in this reseach is done by survey method through in situobservation to populations morphology of mangrove species in the field. Data is analyzedby qualitative and quantitative and then describing to explain specific morphology ofmangrove species in Gili sulat. The result show that there are seven major component ofmangrove species with specific population morphology in Gili sulat, namely Bruguieragymnorrhiza, Rhizophora mucronata, Rhizophora stylosa, Rhizophora apiculata, Ceriopstagal, Sonneratia alba, and Avicennia marina, respectively. The specific morphologycharacter of these mangrove species are heigh of trees, colour and diameter of stem, rootstructure and number of flower.Key Words: specific, mangrove, morphology

scholarly journals Analisis vegetasi dan struktur komunitas Mangrove Di Teluk Benoa, Bali

2015 ◽  
Vol 1 (1) ◽  
pp. 1 ◽  
Author(s):  
Dwi Budi Wiyanto ◽  
Elok Faiqoh
Keyword(s):  
Avicennia Marina ◽  
Sample Survey ◽  
Survey Method ◽  
Rhizophora Mucronata ◽  
Rhizophora Stylosa ◽  
Rhizophora Apiculata ◽  
Sonneratia Alba

Hutan mangrove merupakan salah satu sumber daya alam yang mempunyai nilai dan arti yang sangat penting baik dari segi fisik, biologi maupun sosial ekonomi. Akibat meningkatnya kebutuhan hidup sebagian manusia telah mengintervensi ekosistem tersebut. Hal ini dapat terlihat dari adanya alih fungsi lahan mangrove menjadi tambak, permukiman, areal industri dan sebagainya.Salah satu kawasan hutan mangrove di Bali adalah Teluk Benoa. Tujujan penelitian ini yaitu untuk mengetahui struktur dan vegetasi dan jenis-jenis mangrove yang dominan di hutan mangrove Teluk Benoa-Bali. Metode yang digunakan dalam penelitian ini adalah sample survey method atau survey di lapangan. Pada setiap stasiun pengamatan sepanjang transek garis, dibuat petak (plot) dengan ukuran 10 meter x 10 meter sebanyak 3 plot untuk tiap stasiun. Selanjutnya pada setiap plot dilakukan pengamatan dan penghitungan jumlah individu mangrove per spesies yang ditemukan. Untuk keperluan analisis data, masing-masing individu pohon, anakan dan semai dicatat nama jenis dan keliling batang setinggi dada, sedangkan untuk vegetasi strata seedling dicatat nama jenis dan jumlah individu masing-masing jenis. Vegetasi mangrove yang ditemukan yaitu 11 spesies mangrove sejati dan 1 jenis mangrove ikutan yaitu Waru Laut (Thespesia popunema). Pada stasiun I, vegetasi mangrove tingkat pohon didominasi oleh Sonneratia alba (INP) sebesar 130.61, tingkat anakan didominasi oleh Rhizophora mucronata (INP) sebesar 246.11. Pada stasiun II, vegetasi mangrove tingkat pohon didominasi oleh Rhizophora mucronata (INP) sebesar 109.59, sedangkan tingkat anakan didominasi oleh Rhizophora stylosa (INP) sebesar 91.60. Pada stasiun III, vegetasi mangrove tingkat pohon didominasi oleh Rhizophora apiculata (INP) sebesar 92.26, sedangkan tingkat anakan didominasi oleh Rhizophora apiculata (INP) sebesar 82.89. Pada stasiun IV, vegetasi mangrove tingkat pohon didominasi oleh Sonneratia alba (INP) sebesar 93.77, sedangkan tingkat anakan didominasi oleh Avicennia marina (INP) sebesar 103.04. Pada stasiun V, vegetasi mangrove tingkat pohon didominasi oleh Bruguira gymnorrhyiza (INP) sebesar 115.31, sedangkan tingkat anakan didominasi oleh Rhizophora stylosa (INP) sebesar 136.62.

scholarly journals Analisis Kesesuaian Ekowisata Mangrove Di Desa Taddan Kecamatan Camplong Kabupaten Sampang

2021 ◽  
Vol 12 (2) ◽  
pp. 115-125
Author(s):  
Maywa Widiya Pratiwi ◽  
Firman Farid Muhsoni
Keyword(s):  
Avicennia Marina ◽  
Line Transect ◽  
Rhizophora Mucronata ◽  
Rhizophora Stylosa ◽  
Rhizophora Apiculata ◽  
Sonneratia Alba

Kawasan hutan mangrove memiliki keanekaragaman hayati dan biota yang beragam, kawasan ini potensial dikembangkan sebagai kawasan ekowisata bahari. Tujuan penelitian ini untuk mengetahui indeks kesesuaian wisata, daya dukung kawasan, dan daya dukung pemanfaatan ekowisata mangrove di Desa Taddan Kecamatan Camplong Kabupaten Sampang. Metode pengambilan data mangrove menggunakan transek garis dan plot (Line Transect Plot). Hasil penelitian mendapatkan jenis mangrove di lokasi penelitian adalah Rhizophora stylosa, Rhizophora mucronata, Rhizophora apiculata, Sonneratia alba, Avicennia marina, dan Aegiceras cornitulatum. Kesesuaian kawasan untuk dimanfaatkan sebagai kawasan ekowisata bahari kategori mangrove untuk semua stasiun pada kondisi sesuai bersyarat. Daya dukung kawasan menunjukkan hasil kemampuan suatu kawasan dalam menyediakan ruang bagi pemanfaatan sebanyak 199 orang per hari, sedangkan untuk per trip sebanyak 25 orang per trip. Daya dukung pemanfaatan dengan mempertimbangkan persentase kawasan untuk konservasi sebesar 10% maka diperoleh hasil sebanyak 20 orang per hari

scholarly journals Sebaran Mangrove di Desa Bumiharjo Kecamatan Keling Kabupaten Jepara

2020 ◽  
Vol 9 (2) ◽  
pp. 117-124
Author(s):  
Suryono Suryono ◽  
Nur Taufiq-SPJ ◽  
Ibnu Pratikto ◽  
Raden Ario
Keyword(s):  
Ground Truth ◽  
Avicennia Marina ◽  
Average Density ◽  
Landsat 8 ◽  
Rhizophora Mucronata ◽  
Mangrove Species ◽  
Rhizophora Stylosa ◽  
Rhizophora Apiculata ◽  
The Village ◽  
Green Belts

Kabupaten Jepara memiliki potensi wilayah pesisir dengan panjang garis pantai 81,6 km. Mangrove sebagai sabuk pantai hijau memiliki sebaran di setiap kecamatan pesisir. Salah satu lokasi sebaran mangrove di pesisir Jepara berada di desa Bumiharjo Kecamatan Keling. Identifikasi potensi luasan lahan serta sebaran mangrove adalah salah upaya mengetahui potensi sumberdaya pesisir. Metode penelitian yang digunakan adalah overlay peta RBI dan peta satelit landsat 8 guna mengetahui lokasi serta luasan sebaran mangrove di lokasi penelitian.Selanjutnya dilakukan investigasi ekologi mangrove dengan Survei Lapang guna mengetahui distribusi dan kelimpahan mangrove. Hasil penelitian menunjukan bahwa hutan mangrove dilokasi penelitian adalah seluas 4,75 Ha. Hasil identifikasi komposisi jenis mangrove ditemukan sebanyak 6 spesies mangrove yaitu: Avicennia marina, Rhizophora apiculata, Rhizophora stylosa, Rhizophora mucronata, Soneratia alba, serta Soneratia muconata. Kerapatan rata-rata vegetasi mangrove berkisar antara 4000 – 10.000 individu/ha. Tegakan mangrove memiliki tinggi batang 5-6 meter, diameter batang berkisara antara 4,3- 5,0 cm. Kerapatan mangrove didominasi oleh Rhizophora mucronata. dengan kerapatan paling dominan adalah semai (Sapling). Hal ini menunjukan bahwa mangrove yang ada di desa Bumiharjo Kecamatan Keling kabupaten Jepara adalah dominan mangrove hasil replant. Jepara Regency has a potential coastal area with a coastline length of 81.6 km. Mangroves as coastal green belts have distribution in each coastal district. One of the mangrove distribution locations on the coast of Jepara is in the village of Bumiharjo, Keling district. Identification of the potential land area and the distribution of mangroves is an effort to determine the potential of coastal resources. The research method used is an overlay RBI map and satellite map Landsat 8 to determine the location and extent of the distribution of mangroves in research locations. Subsequently carried out an investigation of mangrove ecology with a Field Survey (Ground Truth) to determine the distribution and abundance of mangroves. The results showed that the mangrove forest in the study area was 4.75 Ha. The results of the identification of the composition of mangrove species were found as many as 6 species of mangroves, namely: Avicennia marina, Rhizophora apiculata, Rhizophora stylosa, Rhizophora mucronata, Soneratia alba, and Soneratia muconata. the average density of mangrove vegetation ranges between 4000 - 10,000 individuals/ha. Mangrove stand has a stem height of 5-6 meters. the diameter of the stem is between 4.3 - 5.0 cm. Mangrove density is dominated by Rizophora mucronata. with the most dominant density is the seedling (Sapling). This shows that the mangroves on the coast of the Jepara district are replanted mangrove species. (rehabilitation).

scholarly journals KEANEKARAGAMAN JENIS MANGROVE DI DESA MENDALOK KECAMATAN SUNGAI KUNYIT KABUPATEN MEMPAWAH

2019 ◽  
Vol 7 (1) ◽  
Author(s):  
Syahrul Muharamsyah ◽  
M Sofwan Anwari ◽  
Hafiz Ardian
Keyword(s):  
Mangrove Forest ◽  
Avicennia Marina ◽  
Raw Material ◽  
Mangrove Forests ◽  
Bruguiera Gymnorrhiza ◽  
Mangrove Species ◽  
Rhizophora Stylosa ◽  
Sonneratia Caseolaris ◽  
Rhizophora Apiculata ◽  
Bruguiera Cylindrica

Mangrove forests are unique ecosystems that have ecological, biological and socio-economic functions. The function of mangrove forests on the environment is very important especially in the coastal and oceanic regions. Mangrove forests providers of wood, leaves as raw material for medicines, and natural dye. This study aims to inventory the diversity of species of mangrove vegetation in Mendalok Village, Sungai Kunyit Subdistrict, Mempawah Regency. The benefits of this study are to provide the data on mangrove forest vegetation as basic data for local government and related agencies in efforts to protect and preserve mangrove forests in Mendalok Village, Sungai Kunyit Subdistrict, Mempawah Regency. Inventory the tree in mangrove forest used a line with measured 200 meters. There are 6 lines and the distance between the lines as far as 100 meters. The lines of observation are placed by purposive sampling. The results of research found 11 types of species and consisted of 6 genera. The genera are Avicennia, Bruguiera, Ceriops, Rhizophora, Soneratia and Xylocarpus. The species found were Avicennia alba, Avicennia marina, Bruguiera cylindrica, Bruguiera gymnorrhiza, Bruguiera parviflora, Ceriops decandra, Rhizophora apiculata, Rhizophora mucronata, Rhizophora stylosa, Sonneratia caseolaris, Xylocarpus mollucensis. Diversity of mangrove species in Mendalok Village, Sungai Kunyit Subdistrict, Mempawah Regency was high and should be maintained for conservation and ecotourism area. Keywords : conservation, ecotourism, mangrove, Mendalok Village

scholarly journals Regeneration capacity and threats to mangrove areas on the southern coast of Oriental Mindoro, Philippines: Implications to mangrove ecosystem rehabilitation

2020 ◽  
Vol 21 (8) ◽  
Author(s):  
AARON FROILAN RAGANAS ◽  
ANNALEE S. HADSALL ◽  
NELSON M. PAMPOLINA ◽  
STEFAN HOTES ◽  
DAMASA B. MAGCALE-MACANDOG
Keyword(s):  
Dominant Species ◽  
Avicennia Marina ◽  
Mangrove Ecosystem ◽  
Regeneration Capacity ◽  
Southern Coast ◽  
Mangrove Species ◽  
Rhizophora Apiculata ◽  
Mangrove Ecosystems ◽  
Sonneratia Alba ◽  
Ecosystem Rehabilitation

Abstract. Raganas AFM, Hadsall AS, Pampolina NM, Hotes S, Magcale-Macandog DB. 2020. Regeneration capacity and threats to mangrove areas on the southern coast of Oriental Mindoro, Philippines: Implications to mangrove ecosystem rehabilitation. Biodiversitas 21: 3625-3636. Regeneration capacity is important as it determines the fate of an ecosystem. This study assessed six mangrove areas in the southern coast of Oriental Mindoro, Philippines to evaluate their regeneration capacity status. Four mangrove ecotypes were delineated namely seaward, middle, landward and riverine zones at each mangrove ecosystem, where dominant mangrove species were identified and selected for regeneration capacity study. Three subplots measuring 1 x 1 m2 were laid within the five 10 x 10 m2 survey plots established per zone. The juveniles were counted and categorized according to their height classes, using linear regeneration sampling method; where: RCI (≤40 cm) considered seedlings; RCII (41-150 cm) as saplings; and RCIII (151-≤300 cm) as small trees. Potential threats both anthropogenic and natural were determined through key informant interviews. Seven dominant species were identified across ecotypes in all mangrove sites, namely Avicennia marina, Avicennia rumphiana, Ceriops decandra, Rhizophora apiculata, Rhizophora mucronata, Sonneratia alba, and Xylocarpus granatum. RCI (seedlings) is the most abundant across mangrove sites irrespective of the dominant species. Fishpond operation within the mangrove stand is considered a major threat to the juveniles and most mangrove ecosystems. Therefore, protection and constant monitoring of these mangrove ecosystems are necessary to ensure regeneration success in the future.

scholarly journals Percentage of Mangrove Canopy Cover and Mollusks Abundance in Benoa Bay Mangrove Ecosystem

2021 ◽  
Vol 5 (3) ◽  
pp. 105
Author(s):  
Shintani Asri Tinambunan ◽  
Nyoman Dati Pertami ◽  
Ni Made Ernawati
Keyword(s):  
Canopy Cover ◽  
Avicennia Marina ◽  
Mangrove Ecosystem ◽  
Line Transect ◽  
Hemispherical Photography ◽  
Bruguiera Gymnorrhiza ◽  
Mangrove Species ◽  
Rhizophora Stylosa ◽  
Rhizophora Apiculata ◽  
The Relationship

This research was conducted to determine the condition of the mangrove ecosystem based on its canopy cover and to determine the types of mollusks (Bivalves and Gastropods) associated with the Benoa Bay mangrove ecosystem. Hemispherical photography is a method for observing mangrove canopy cover and line transect method for mollusks. The composition of mangrove species found in the research location were five species, namely Rhizophora stylosa, Rhizophora mucronata, Rhizophora apiculata, Bruguiera gymnorrhiza, and Avicennia marina. The percentage of mangrove canopy cover in the Benoa Bay mangrove ecosystem is in a good category (average = 76.59%). There are eight types of mollusks found in the research location. There are two types of bivalves (Polymesoda bengalensis and Gafrarium pectinatum) and six types of gastropods (Nerita balteata, Nerita picea, Neritina turrita, Pila ampullacea, Cassidula aurisfelis, and Littoraria melanostoma). The relationship between the percentage of mangrove canopy cover and abundance of mollusks in the Benoa Bay mangrove ecosystem is very strong (r) of 0.920. The higher the percentage value of mangrove canopy cover, the higher the mollusks abundance.

scholarly journals Karakteristik Mangrove Di Muara Sungai Timur Kawasan Laguna Segara Anakan, Kabupaten Cilacap Jawa Tengah

2020 ◽  
Vol 9 (4) ◽  
pp. 416-422
Author(s):  
Raditya Rizki Ananta ◽  
Nirwani Soenardjo ◽  
Rini Pramesti
Keyword(s):  
Community Structure ◽  
Avicennia Marina ◽  
Hemispherical Photography ◽  
Bruguiera Gymnorrhiza ◽  
Mangrove Species ◽  
Nypa Fruticans ◽  
Sonneratia Caseolaris ◽  
Rhizophora Apiculata ◽  
Sonneratia Alba ◽  
Avicennia Alba

ABSTRAK: Ekosistem mangrove adalah komunitas tumbuhan tropis yang berada di daerah tepi pantai yang memiliki kemampuan adaptasi pada perairan asin di wilayah intertidal yang dipengaruhi oleh pasang surut air laut. Struktur komunitas mangrove merupakan salah satu parameter dalam menentukan kondisi mangrove. Kawasan ekosistem mangrove yang memiliki karakteristik dinamis komposisi jenis mangrove terdapat di Segara Anakan. Akan tetapi memiliki penurunan luasan hutan mangrove. Hal ini adanya beragam faktor kondisi lingkungan di Segara Anakan, sehingga menyebabkan variabilitas mangrove wilayah Segara Anakan berbeda. Namun kondisi terkini belum banyak dilakukan dalam suatu penelitian sehingga dibutuhkan informasi ilmiah terkini untuk mengetahui komposisi jenis mangrove. Untuk mengatasi hal tersebut maka dilakukan penelitian struktur komunitas untuk mengetahui kondisi ekologi mangrove di Segara Anakan. Tujuan penelitian ini adalah menggambarkan kondisi struktur komunitas mangrove di muara timur Segara Anakan. Lokasi penelitian berada di muara sungai bagian Timur (Sungai Donan). Metode yang digunakan dalam penelitian ini adalah metode deskriptif. Penentuan titik pengambilan data atau sampel di setiap lokasi dilakukan dengan teknik purposive sampling. Selain itu, digunakan teknik transek kuadrat 10x10 m dan Hemispherical Photography. Hasil penelitian menunjukkan kerapatan pohon sebesar 90,6 /ha. Kerapatan sapling rata-rata bernilai 1023 /ha. Kerapatan seedling bernilai 1746 /ha di Muara Timur. Tutupan kanopi komunitas mangrove memiliki persentase kurang dari 75%. Tinggi dan diameter pohon didapatkan sebesar 5,97 m dan 3,1 cm. Spesies mangrove yang ditemukan di dalam plot berjumlah 10 spesies mangrove yaitu Rhizophora apiculata, Bruguiera gymnorrhiza, Aegiceras corniculatum, Avicennia marina, Avicennia alba, Ceriops tagal, Ceriops decandra, Sonneratia caseolaris, Sonneratia alba, Scyphiphora hydrophyllacea, Xylocarpus moluccensis, Xylocarpus granatum, Talipariti tiliaceum, dan Nypa fruticans. ABSTRACT: Mangrove ecosystems are communities of tropical plants located on the coast that have the ability to adapt to salty waters in intertidal areas which are affected by tides. Mangrove community structure is one of the parameters in determining mangrove condition. Mangrove ecosystem areas that have dynamic characteristics of mangrove species composition are found in Segara Anakan. However, it has decreased the area of mangrove forests. This is because of various environmental conditions in Segara Anakan, causing variability of mangroves in the Segara Anakan area to be different. However, recent conditions have not been carried out in many studies, so the latest scientific information is needed to determine the species composition of mangroves. To overcome this, a community structure research was conducted to determine the ecological conditions of mangroves in Segara Anakan. The purpose of this study was to describe the condition of the mangrove community structure in the eastern estuary of Segara Anakan. The research location is in the mouth of the eastern river (Donan River). The method used in this research is descriptive method. Determination of data collection points or samples at each location was done by using purposive sampling technique. In addition, the 10x10 m quadratic transect technique and Hemispherical Photography were used. The results showed the tree density was 90.6 ind/ha. Saplingaveraged 1023 ind/ha. The density seedling is 1746 ind/ha in Muara Timur. The canopy cover of the mangrove community has a percentage of less than 75%. The tree height and diameter were 5.97 m and 3.1 cm respectively. There are 10 mangrove species found in the plot, namely Rhizophora apiculata, Bruguiera gymnorrhiza, Aegiceras corniculatum, Avicennia marina, Avicennia alba, Ceriops tagal, Ceriops decandra, Sonneratia caseolaris, Sonneratia alba, Scyphiphora hydrophyllacea, Xylocarpus moluccensis, Xylocarpus granatum, Talipariti tiliaceum, and Nypa fruticans.   

scholarly journals KONDISI VEGETASI DAN PERUBAHAN TUTUPAN LAHAN EKOSISTEM MANGROVE PULAU TANAKEKE KABUPATEN TAKALAR PROVINSI SULAWESI SELATAN

2021 ◽  
Vol 13 (2) ◽  
pp. 305-318
Author(s):  
Aswin ◽  
Ario Damar ◽  
Gatot Yulianto
Keyword(s):  
Maximum Likelihood ◽  
Supervised Classification ◽  
Rhizophora Mucronata ◽  
Bruguiera Gymnorrhiza ◽  
Rhizophora Stylosa ◽  
Purposive Sampling ◽  
Rhizophora Apiculata ◽  
Sonneratia Alba ◽  
Ceriops Tagal ◽  
Lumnitzera Racemosa

Ekosistem mangrove merupakan salah satu ekosistem pesisir dengan tingkat produktivitas yang tinggi, sehingga keberadaannya dapat memperkaya kawasan pesisir dan menjaga keseimbangan ekosistem. Penelitian ini bertujuan untuk menjelaskan perubahan luasan dan sebaran ekosistem mangrove dalam kurun waktu 20 tahun, yakni dari tahun 2000 sampai dengan 2020 dan untuk mengetahui kondisi vegetasi ekosistem mangrove di Pulau Tanakeke. Penelitian ini dilakukan pada bulan Januari hingga April 2020 di Pulau Tanakeke. Penentuan lokasi penelitian menggunakan metode purposive sampling. Analisis perubahan luasan ekosistem mangrove dari tahun 2000 sampai 2020 menggunakan metode supervised classification dengan analisis maximum likelihood, sedangkan kondisi vegetasi ekosistem mangrove menggunakan metode analisis indeks nilai penting (INP) dan indeks keanekaragaman jenis. Hasil penelitian menunjukkan bahwa ekosistem mangrove di Pulau Tanakeke dari tahun 2000 sampai 2020 mengalami degradasi seluas -337,41 ha (28,32% dari luas tahun 2000). Pada lokasi penelitian ditemukan 9 jenis mangrove, yaitu Bruguiera gymnorrhiza, Ceriops tagal, Rhizophora stylosa, Rhizophora apiculata, Rhizophora mucronata, Sonneratia alba, Phemphis acidula, Lumnitzera racemosa dan Ceriops decandra. Mangrove jenis Rhizophora mucronata memiliki indeks nilai penting tertinggi yaitu sebesar 192,55%, sementara untuk keanekaragaman jenis secara umum tergolong rendah.

scholarly journals Diversity, biomass, covers, and NDVI of restored mangrove forests in Karawang and Subang Coasts, West Java, Indonesia

2021 ◽  
Vol 22 (9) ◽  
Author(s):  
Agung Suwanto ◽  
Noverita Dian Takarina ◽  
Raldi Hendro Koestoer ◽  
Evi Frimawaty
Keyword(s):  
Carbon Sink ◽  
Avicennia Marina ◽  
Common Species ◽  
Mangrove Forests ◽  
Rhizophora Mucronata ◽  
West Java ◽  
Mangrove Species ◽  
Sonneratia Caseolaris ◽  
Rhizophora Apiculata ◽  
Bruguiera Gymnorhiza

Abstract. Suwanto A, Takarina ND, Koestoer RH, Frimawaty E. 2021. Diversity, biomass, covers, and NDVI of restored mangrove forests in Karawang and Subang Coasts, West Java, Indonesia. Biodiversitas 22: 4115-4122. Indonesia has been recognized as the country with greatest diversity of mangrove species with significant amount of carbon sink and biomass. In few recent decades, mangrove forests have been deforested significantly. One of the solutions to deal with mangrove deforestation is through restoration. West Java north coasts are one of the areas that have experienced deforestation, however and mangrove restorations have been conducted mainly in Karawang and Subang coasts. Correspondingly this research aims to assess the mangrove diversity using index and biomass resulted from restoration program in those coasts. To assess the mangrove diversity in each coast on June 2021, 6 sampling stations containing 3 replicated sample plots of size 10 m × 10 m were located. In total 8 species with 1549 trees were been sampled. In Subang the order of mangrove species from common to less-common species were Avicennia marina > Rhizophora mucronata > Sonneratia caseolaris > Acanthus ilicifolius > Bruguiera gymnorhiza. While the order in Karawang was Avicennia marina > Rhizophora mucronata > Rhizophora apiculata > Sonneratia caseolaris > Bruguiera gymnorhiza. The mangrove diversity (H)’ was significantly different (p = 0.000, F = 2.216) with diversity in Subang Coast (average H' = 1.326, 95% CI: 1.15-1.5) was higher than in Karawang (average H’ = 1.063, 95%CI: 0.934-1.2). Estimated restored mangrove covers in Subang were 3.612 km2 and 0.46 km2 in Karawang. R. mucronata was mangrove species that has the highest biomass with the value of 1337.91 mg ha-1 and the lowest was A. marina with value of 14.3 mg ha-1. The results suggest that restoration areas in Subang and Karawang have significant contributions to maintain mangrove diversity, biomass, and covers.

scholarly journals Studies on Canopy Parameters of Some Mangroves Along the Coast of Maharashtra

2021 ◽  
Vol 4 (4-5) ◽  
pp. 225-229
Author(s):  
Narendra Kulkarni ◽  
Leela J. Bhosale
Keyword(s):  
Correlation Coefficient ◽  
Canopy Cover ◽  
Avicennia Marina ◽  
Kandelia Candel ◽  
Rhizophora Mucronata ◽  
Mangrove Species ◽  
Aegiceras Corniculatum ◽  
Excoecaria Agallocha ◽  
Sonneratia Alba ◽  
Avicennia Officinalis

Mangrove species, viz., Avicennia officinalis, Avicennia marina var. acutissima, Avicennia marina (dwarf), Rhizophora mucronata, Sonneratia alba, Aegiceras  corniculatum, Kandelia  candel were chosen for measurement of height of the tree and girth or circumference. The sampling was random and at least 50 records were made. The girth is measured by the tape. The measurement of the height is made with the help of abny level. The Tables 1 to 8 records the values for girth, height and canopy cover as well as for correlation coefficient (r). There correlation between girth and canopy in all the species studied however in case of Avicennia officinalis and Aegiceras corniculatum girth and height show more co-relation than girth and C. cover. The positive co-relation observed between girth and canopy is more or less 0.7 except Avicennia marina (dwarf) Excoecaria agallocha and Aegiceras corniculatum. The co-relation is observed in girth and height is difficult to explain. This case is observed in Avicennia officinalis and Aegiceras corniculatum.

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