scholarly journals Struktur dan Komposisi Hutan Mangrove di Kampung Sakartemin Distrik Fakfak Tengah, Kabupaten Fakfak, Papua Barat

2021 ◽  
Vol 13 (1) ◽  
pp. 74-81
Author(s):  
Gail Watofa ◽  
Ning S. Astuti ◽  
Amadion Andika Wanaputra
Keyword(s):  
Mangrove Forest ◽  
Mangrove Ecosystem ◽  
Tree Level ◽  
Survey Method ◽  
Importance Value Index ◽  
Importance Value ◽  
Mangrove Species ◽  
Rhizophora Stylosa ◽  
Mangrove Vegetation ◽  
The Government

Sakartemin is one of the village Fakfak Regency which has naturally growing mangrove forest. However, due to the economic development, the government should build up some infrastructures near by those mangrove forest. The disturbance nearby mangrove ecosystem cause changes in structure and composition of mangrove vegetation. This study aims to identify the types of mangrove vegetation and to find out the structure and composition of mangrove forest in Sakartemin Village, Central Fakfak District, Fakfak Regency. The method that used in this study is vegetation survey method combining path and checkered line method. The result shown that mangrove species in the sakartemin village consist of 5 families, namely: Rhizophoraceae, Meliaceae, Soneratiaceae,  Pandanaceae, and Myrsinaceae which consists of 7 species namely: Rhizophora stylosa, R. apiculata, Xylocarpus granatum, Soneratia alba, Bruguiera gymnhoriza, Pandanus sp., and Aegiceras corniculatum. At the seedling level found 1002 individuals, sapling level found 404 individuals, and tree level found 319 individuals. The highest importance value index (IVI) at seedling level was R. stylosa 55.41% and the lowest was A. corniculatum 9.49%. The highest IVI at sapling level was R. apiculata 57.72% and the lowest was Pandanus 5.49%. The highest IVI at the tree level was R. apiculata 88.62% and the lowest was B. gymnhoriza 42.45%.Key words: Sakartemin village; mangrove; structure; composition; Fakfak.

scholarly journals STRUKTUR KOMUNITAS EKOSISTEM MANGROVE DI KAWASAN PESISIR KOTA MUKOMUKO KABUPATEN MUKOMUKO PROVINSI BENGKULU

2019 ◽  
Vol 4 (1) ◽  
pp. 92-104
Author(s):  
Zamdial Zamdial ◽  
Dede Hartono ◽  
Yar Johan
Keyword(s):  
Coastal Area ◽  
Negative Impact ◽  
Mangrove Ecosystem ◽  
Tree Level ◽  
Survey Method ◽  
Importance Value Index ◽  
Importance Value ◽  
Mangrove Species ◽  
Mangrove Vegetation ◽  
Line Transects

Mangrove merupakan salah satu ekosistem penting di wilayah pesisir Kota Mukomuko. Ada berbagai macam aktivitas manusia di kawasan ekosistem hutan mangrove di pesisir Kota Mukomuko yang dikhawatirkan dapat menimbulkan dampak negatif. Penelitian ini dilakukan dari bulan Juli 2018 sampai dengan September 2018. Tujuan penelitian untuk mendeskripsikan struktur komunitas mangrove di kawasan pesisir Kota Mukomuko Provinsi Bengkulu. Penelitian ini dilakukan dengan metode survei. Pengambilan data vegetasi mangrove dilakukan dengan menggunakan transek garis dengan ukuran 10 m x 10 m, pada tiga stasiun berbeda, yang meliputi Kelurahan Bandar Ratu, Desa Ujung Padang dan Kelurahan Pasar Mukomuko. Analisis data penelitian dilakukan dengan metode statistik deskripitif. Hasil penelitian menunjukkan bahwa secara keseluruhan nilai kerapatan (Di), frekuensi jenis (Fi), tutupan (Ci) dan indeks nilai penting (INP) tergolong baik, namun nilai keanekaragaman jenis tergolong rendah, dikarenakan ada jenis mangrove yang lebih mendominasi di kawasan tersebut. Indeks nilai penting (INP) mangrove menunjukkan peran vegetasi mangrove di kawasan pesisir Kota Mukomuko tergolong tinggi dalam menjaga lingkungan pesisir, baik tingkatan pohon, anakan maupun semai.STRUCTURE COMMUNITY OF MANGROVE ECOSYSTEM IN COASTAL AREA OF MUKOMUKO CITY, MUKOMUKO DISTRICT, BENGKULU PROVINCE. Mangroves are one of the important ecosystems in the coastal area of Mukomuko City. There are various kinds of human activities in the mangrove forest area on the coast of Mukomuko City which is feared to have a negative impact. This research was conducted from July 2018 to September 2018. The objective of this research was to describe the mangrove community structure in the coastal area of Mukomuko City, Bengkulu Province. This research was conducted by survey method. Data collection on mangrove vegetation was carried out using line transects with sizes of 10 m x 10 m, at three different stations, which included Bandar Ratu Village, Ujung Padang Village and Pasar Mukomuko Village. Analysis of research data was carried out by descriptive statistical methods. The results of the study indicate that overall the density value (Di), frequency type (Fi), cover (Ci) and important values index (INP) were classified as good, but the value of species diversity is relatively low, because there are mangrove species that dominated more in the area. The importance value index (INP) of mangroves indicates  the role of mangrove vegetation in the coastal area of Mukomuko City is high in maintaining the coastal environment, both tree level, tillers and seedlings.

scholarly journals KEANEKARAGAMAN JENIS VEGETASI MANGROVE DI DESA DUSUN BESAR KECAMATAN PULAU MAYA KABUPATEN KAYONG UTARA

2020 ◽  
Vol 8 (2) ◽  
Author(s):  
Cici Khairunnisa ◽  
Eddy Thamrin ◽  
Hari Prayogo
Keyword(s):  
Species Diversity ◽  
Mangrove Forest ◽  
Avicennia Marina ◽  
Forest Vegetation ◽  
Forest Area ◽  
Tree Level ◽  
Importance Value Index ◽  
Importance Value ◽  
Mangrove Vegetation ◽  
Vegetation Species

The diversity of mangrove vegetation is a community that has different characteristics from other communities. Diversity is an important component in mangrove management, but so far the availability of data related to mangroves is still very minimal, including those related to the species diversity of mangrove forest vegetation in the region. This study aims to obtain data on species diversity of vegetation found in the mangrove forest area of Dusun Besar Village, Pulau Maya District, Kayong Utara Regency. Method used was a combination of path and plot method, and the determination of the location and research path location were carried out using purposive sampling. The results of observation and data analysis showed that the dominant vegetation species with the highest importance value index (INP) for seedlings, saplings and trees was the Avicennia marina, namely the INP value of seedlings 37.04%, the INP values of sapling 65.24%, and the value of INP a tree rate of 65. Based on the results of the most dominant analysis found the species of  Avicennia marina with a value of C = 0.03430 for seedling, C = 0.04729 for sapling, and C = 0.04736 for tree level. The diversity of mangrove forest vegetation species in Dusun Besar Village for seedlings, saplings and trees is low because it has an H 'value <1, and the abundance of mangrove vegetation species was not evenly distributed in each forest area because it only has an e value <1.Keywords: Dusun Besar Village, Mangrove Forest, Species Diversity

scholarly journals Mangrove Community Structure Morowali District, Central Sulawesi Province, Case In Maratape Village, Lafeu Village, And Labota Village

2020 ◽  
Vol 8 (2) ◽  
pp. 264
Author(s):  
Joshian Nicolas William Schaduw
Keyword(s):  
Community Structure ◽  
Mangrove Ecosystem ◽  
Line Transect ◽  
Importance Value Index ◽  
Importance Value ◽  
Mangrove Species ◽  
Rhizophora Stylosa ◽  
Rhizophora Apiculata ◽  
Sonneratia Alba ◽  
Central Sulawesi

The research purpose aims at analyzing the structure of the existing mangrove communities along the coastal area of Morowali District, Central Sulawesi Province. The sampling was taken from three villages, i.e. Maratape Village, Lafeu Village, and Labota Village. This research used the quadrant line transect method. The analysis and description were made after the method had been conducted. The composition of mangrove species found in this research was 3 (three) types, i.e. Rhizophora apiculata, Sonneratia alba, and Rhizophora stylosa. Of the three species the research finds, the dominant ones are Rhizophora apiculata and Sonneartia alba. The highest species density values were found at Station 1 (M01), i.e. R. apiculata. The frequency value had the highest value found at Station 2 (M02), i.e. R. apiculata type, and the highest relative frequency was R. apiculata. The highest closing value, i.e. S. albater type could be found at Station 2 (M02). The importance value index of Rhizophora apiculata type at the Station 1 (M01) had the highest value and followed in Station 3 (M03), i.e. Sonneratiaalba type, the lowest INP analysis in all stations was Rhizophora type stylosa. The dominant mangrove in 3 (three) Morowali District Stations were Rhizophora apiculata and Silneratia alba types. Based on the research results conducted on the structure of mangrove ecosystem communities in Morowali District, Central Sulawesi Province (Maratape Village Menui Kepulauan Sub-District (station 1), Lafeu Village Bungku Pesisir Sub-District (station 2) and Labota Village Bungku Tengah Sub-District (station 3) are definitely classified as natural and have not experienced significant degradationKeywords: Community Structure, Mangrove, Morowali, Central SulawesiAbstrakKajian ini bertujuan untuk menganalisis struktur komunitas mangrove yang ada disepanjang pesisir Kabupaten Morowali Provinsi Sulawesi Tengah. Sampling dilakukan pada tiga desa yaitu Desa Maratape, Desa Lafeu, dan Desa Labota. Kajian ini menggunakan metode line transek kuadaran dilanjutkan dengan analisissnya, kemudian dideskripsikan. Komposisi jenis mangrove yang ditemukan sebanyak 3 (tiga) jenis yaitu Rhizophora apiculata, Sonneratia alba, dan Rhizophora stylosa. Dari ketiga jenis yang ditemukan yang dominan yaitu Rhizophora apiculata dan Sonneartia alba. Nilai kerapatan jenis tertinggi terdapat di Stasiun 1 (M01) yaitu R. apiculata yaitu. Nilai frekuensi memiliki nilai tertinggi terdapat di Stasiun 2 (M02) yaitu jenis R. apiculata, dan frekuensi relatif tertinggi R. apiculata. Nilai penutupan tertinggi yaitu jenis S. alba terdapat di Stasiun 2 (M02) Indeks nilai penting jenis Rhizophora apiculata di Stasiun 1 (M01) memiliki nilai tertinggi dan di ikuti Stasiun 3 (M03) jenis Sonneratia alba, analisis INP yang terendah dari semua stasiun yaitu jenis Rhizophora stylosa. Mangrove dominan di 3 (tiga) stasiun Kabupaten Morowali  adalah dari jenis  Rhizophora apiculata dan Sonneratia alba. Berdasarkan hasil penelitian yang telah dilakukan terhadap struktur komunitas ekosistem mangrove di Kabupaten Morowali Provinsi Sulawesi Tengah (Desa Maratape Kecamatan Menui Kepulauan (stasiun 1), Desa Lafeu Kecamatan Bungku Pesisir (stasiun 2) dan Desa Labota Kecamatan Bungku Tengah (stasiun 3)  masih tergolong alami dan belum mengalami degradasi yang berarti.Kata kunci : Struktur komunitas; Mangrove; Morowali; Sulawesi Tengah

scholarly journals Structure and Dominance of Species in Mangrove Forest on Kutai National Park, East Kalimantan, Indonesia

2021 ◽  
Vol 27 (1) ◽  
pp. 59-68
Author(s):  
E Muli ◽  
◽  
I S Sulistyorini ◽  
E Poedjirahajoe ◽  
L R W Faida ◽  
...  
Keyword(s):  
Mangrove Forest ◽  
National Park ◽  
Survey Method ◽  
P Value ◽  
Importance Value Index ◽  
Importance Value ◽  
Mangrove Species ◽  
Conservation Area ◽  
East Kalimantan ◽  
Rhizophora Apiculata

The Kutai National Park (KNP) which is located in East Kutai Regency on East Kalimantan Province is endowed with numerous pristine of mangrove forest. However, related information to the species composition and diversity of KNP mangrove is still scanty. Twenty-one of mangrove species were recorded using the quadratic transects survey method (total plot area of 1.7 ha). Main species of mangrove communities were Avicennia lanata, A. marina, Bruguiera gymnorrhysa, B sexangular, Ceriops tagal, Rhizophora apiculata, R. mucronata and Sonneratia Alba. Mangrove density was recorded reached as 1,699 trees ha-1, saplings of 4,395 ha-1 and seedlings 25,348 ha-1. Significant tree density was found in Pandan Bay Estuary. While in the Lombok Bay and the Kaba Bay significant for sapling and seedling categories. Importance value index of mangrove species in the three study locations for three growth categories (tree, sapling and seedling) showed significant differences (p-value> α0.05). Mangrove stand at three study locations has almost the same characteristics. The species diversity and evenness index has shown the same distribution pattern. The findings of this study suggest that KNP mangrove forest stand is not heavily damaged even though there is a lot of human activity. This mangrove could be managed and conserved for multi-sectoral purposes such as ecotourism, research, biodiversity and education rather than solely as a Nature Conservation Area.

scholarly journals KONDISI WISATA MANGROVE DI DESA PASAR BANGGI, KABUPATEN REMBANG Mangrove Tourism Conditions in Pasar Banggi Village, Rembang Regency

2019 ◽  
Vol 8 (3) ◽  
pp. 221-225
Author(s):  
Danang Adi Saputro ◽  
Frida Purwanti ◽  
Siti Rudiyanti
Keyword(s):  
Species Composition ◽  
Mangrove Forest ◽  
Mangrove Ecosystem ◽  
Google Earth ◽  
Survey Method ◽  
Systematic Sampling ◽  
Sampling Techniques ◽  
Mangrove Species ◽  
Sampling Points ◽  
Exploratory Survey

ABSTRAK Mangrove merupakan tumbuhan yang hidup di daerah pasang surut sebagai ekosistem interface antara daratan dengan lautan. Ekosistem mangrove di desa Pasar Banggi Kabupaten Rembang merupakan perpaduan antara mangrove alami dan hasil rehabilitasi. Tujuan penelitian ini untuk mengetahui kondisi mangrove di Desa Pasar Banggi, Rembang dilihat dari  komposisi jenis, kerapatan dan ketebalan mangrove serta menganalisis tingkat kesesuaian wisata mangrove di Desa Pasar Banggi, Rembang. Metode yang digunakan adalah metode survey lapangan yang bersifat eksploratif, dimana  teknis pengumpulan data menggunakan sistematik sampling. Data yang diambil meliputi 5 variabel yaitu: jenis, kerapatan mangrove dan asosiasi biota (hasil pengamatan lapangan dan perbandingan dari penelitian terdahulu), ketebalan (citra Google Earth Oktober 2016), pasang surut (data BMKG Oktober 2016). Pengambilan sampel dilakukan pada 3 stasiun, dimana setiap stasiun terdapat 3 titik sampling. Komposisi jenis mangrove di desa Pasar Banggi terdapat 3 jenis mangrove yaitu Rhizopora stylosa, R. mucronata, dan R. Apiculata, dengan kerapatan mangrove tertinggi yaitu 62 ind/100m2 dan ketebalan mangrove tertinggi sepanjang 139 m. Kondisi hutan mangrove desa Pasar Banggi termasuk dalam kategori sesuai (S2) untuk kegiatan wisata berkelanjutan di Kabupaten Rembang. ABSTRACT Mangroves are plants that grow in a tidal areas an interface ecosystems between terrestrial and marine. Mangrove ecosystem in the Pasar Banggi Village,  Rembang Regency is a combination results of natural mangrove and rehabilitation. The purpose of this study were to determine condition of mangroves in the Pasar Banggi Village, Rembang, seen from the species composition, density and thickness of mangroves and to analyze the suitability level of mangrove tourism in the Pasar Banggi Village, Rembang. The method used in this study was an exploratory survey method, data collected using systematic sampling techniques. Mangrove tourism data collection was carried out of 5 variables, i.e.: type of mangrove, density of mangroves and associations of biota (from observations and comparisons of previous studies), thickness (Google Earth image October 2016), tides (data BMKG October 2016). Sampling was conducted at 3 stations, each station has 3 sampling points. The composition of mangrove species in Pasar Banggi village consists of 3 types of mangroves, namely Rhizopora stylosa, R. mucronata, and R. Apiculata, with the highest density of mangrove 62 ind / 100m2 and the highest thickness of mangrove along 139 m. The condition of mangrove forest in the Pasar Banggi village was included in the appropriate category (S2) for sustainable tourism activities in the Rembang Regency.

scholarly journals Comparison of true mangrove stands in Dudepo and Ponelo Islands, North Gorontalo District, Indonesia

2018 ◽  
Vol 20 (1) ◽  
pp. 259-266
Author(s):  
FAIZAL KASIM ◽  
MIFTAHUL KHAIR KADIM ◽  
SITTI NURSINAR ◽  
ZULKIFLI KARIM ◽  
ALDIN LAMALANGO
Keyword(s):  
Similarity Index ◽  
Basal Area ◽  
Current Status ◽  
Survey Method ◽  
Landsat 8 ◽  
Importance Value Index ◽  
Importance Value ◽  
Mangrove Species ◽  
Rhizophora Apiculata ◽  
The Mean

Kasim F, Kadim MK, Nursinar S, Karim Z, Lamalango A. 2019. Comparison of true mangrove stands in Dudepo and Ponelo Islands, North Gorontalo District, Indonesia. Biodiversitas 20: 259-266. This study aimed to investigate and compare the current status of mangrove areas, as well as the composition and species diversity of mangrove stands in both regions of Dudepo and Ponelo Islands. The results showed that the mangrove areas calculated using the segmentation method in classifying image of Landsat-8 OLI (acquisition on September 2017) were 279.46 ha (Dudepo Island) and 113.35 ha (Ponelo Island) respectively. A total of 13 species of true mangrove were recorded from both islands, using survey method from 9 transect lines (TL), with a distance ranging from 40 to 210 meters (1-6 quadrats) per transect. The mean densities of trees were 2133 ± 329.78 ha-1 (Dudepo Island) and 2111 ± 234.28 ha-1 (Ponelo Island), while those of saplings and seedlings were 58 ± 13.48 ha-1 and 1425 ± 113.96 ha-1 (Dudepo Island), and 79 ± 14.51 ha-1 and 2963 ± 443.22 ha-1 (Ponelo Island). The mean diameter and basal area were 19.73 ± 10.65 cm and 84.22 ± 67.67 m2ha-1 (Dudepo Island), 17.04 ± 1.46 cm and 60.07 ± 15.12 m2ha-1 (Ponelo Island), respectively. The Importance Value Index (IVI) ranged between 3.97-114.87 (Dudepo Island) and 6.04-82.18 (Ponelo Island). The dominant and codominant species based on IVI in both islands were Rhizophora apiculata Blume and R. stylosa Griff. The indexes of diversity, richness, and evenness of mangrove species in both islands were 0.34-1.70, 0.48-1.18, 0.47-0.94 (trees), 0.00-1.10, 0.00-1.82, 0.00-1.00 (saplings), and 0.00.-1.48, 0.00-1.44, 0.72-1.00 (seedlings), respectively. The Bray-Curtis similarity index between Dudepo and Ponelo Islands, based on the overall values of community attributes, was 0.75.

scholarly journals Short Communication: Species composition and density of mangrove forest in Kedawang Village, Pasuruan, East Java, Indonesia

2019 ◽  
Vol 20 (6) ◽  
Author(s):  
WAHYU ISRONI ◽  
R ADHARYAN ISLAMY ◽  
MOHAMAD MUSA ◽  
PUTUT WIJANARKO
Keyword(s):  
Species Composition ◽  
Mangrove Forest ◽  
Short Communication ◽  
Avicennia Marina ◽  
Tree Level ◽  
Survey Method ◽  
Sampling Point ◽  
Rhizophora Apiculata ◽  
Mangrove Vegetation ◽  
Avicennia Alba

Abstract. Isroni W, Islamy RA, Musa M, Wijanarko P. 2019. Short Communication: Species composition and density of mangrove forest in Kedawang Village, Pasuruan, East Java. Biodiversitas 20: 1688-1692. Mangrove is one of ecosystems located in estuary and shallow coastal waters and its existence has a significant role for life. The aim of this study was to identify species composition and density of mangrove forest in Kedawang village, Nguling Sub-district, Pasuruan District, East Java, Indonesia. Survey method using belt transects was carried at three sampling points. Results of this study showed that mangrove vegetation in Kedawang includes five species from three families, namely Avicenniaceae (Avicennia alba and Avicennia marina), Rhizophoraceae (Rhizophora apiculata and Rhizophora mucronata), and Sonneratiace (Sonneratia alba). At sampling point 1, A. alba dominated with a density of 37 individuals/ha at tree level, 380 individuals/ha at pole level and 3100 individuals/ha at stake level. At sampling point 2, the tree level was dominated by A. alba with 142 individuals/ha, while R. mucronata dominated the pole and stake level with 1300 and 1467individuals/ha, respectively. At sampling point 3, the pole and stake level was dominated by A. alba with 167 and 933 individuals/ha respectively, while A. marina dominated the sapling level with 800 individuals/ha. At all stations, the density at stake level is greater than that tree level. Therefore, it is necessary to carry out conservation efforts in the form of protection combined with restoration by enrichment planting at all study locations to increase the diversity and density of mangrove vegetation.

scholarly journals Diversity and characteristics of mangrove vegetation in Pulau Rimau Protection Forest, Banyuasin District, South Sumatra, Indonesia

2019 ◽  
Vol 20 (4) ◽  
pp. 1215-1221
Author(s):  
ERNIK YULIANA ◽  
YUNI TRI HEWINDATI ◽  
ADI WINATA ◽  
WIBOWO A DJATMIKO ◽  
ATI RAHADIATI
Keyword(s):  
Tree Species ◽  
Diversity Index ◽  
Forest Edge ◽  
Importance Value Index ◽  
Importance Value ◽  
Mangrove Species ◽  
Protection Forest ◽  
Mangrove Tree ◽  
Mangrove Vegetation ◽  
Study Sites

Abstract. Yuliana E, Hewindati YT, Winata A, Djatmiko WA, Rahadiati A. 2019. Diversity and characteristics of mangrove vegetation in Pulau Rimau Protection Forest, Banyuasin District, South Sumatra, Indonesia. Biodiversitas 20: 1215-1221. The purpose of the study was to analyze the flora diversity and characteristics of mangrove vegetation in Pulau Rimau Protection Forest, Banyuasin District, South Sumatra. Data collected were the number and girth diameter of mangrove tree species, and aquatic ecology parameters using transect method. The sample plots size were 2m×2 m; 5m×5 m; 10m×10 m; for seedling, sapling, and tree, respectively. The observation plots were arranged in a row of 120 m length on two sides of the forest edge, namely Calik Riverbank and Banyuasin Riverbank. Data were analyzed using importance value index (IVI), Simpson’s diversity index and Sørensen’s community similarity. The study revealed that there were differences in mangrove characteristics in two study sites. There were 57 plant species identified inside and outside sample plots, but only 15 species (26.32%) among them were categorized as true mangrove species. Inside the sample plots, there were 11 and 10 mangrove tree species recorded on the Calik Riverbank and Banyuasin Riverbank, respectively, but only 7 species among them were found in both sites. The mangroves on Calik Riverbank were dominated by Nypa (IVI 53.59%) and Bruguiera (51.12%), while those on Banyuasin Riverbank were dominated by Sonneratia (66.91%) and Avicennia (51.73%). The Simpson’s diversity index for Calik Riverbank and Banyuasin Riverbank was 0.82 and 0.78, respectively, whereas the Sørensen’s coefficient of community between the two sites was 0.67.

scholarly journals Vegetation and Community Structure of Mangrove in Bama Resort Baluran National Park Situbondo East Java

2019 ◽  
Vol 11 (1) ◽  
pp. 132-138
Author(s):  
Sucipto Hariyanto ◽  
Akhmad Kharish Fahmi ◽  
Thin Soedarti ◽  
Emy Endah Suwarni
Keyword(s):  
Mangrove Forest ◽  
Development Program ◽  
Basal Area ◽  
Outer Zone ◽  
Wiener Index ◽  
Bruguiera Gymnorrhiza ◽  
Importance Value ◽  
Dominance Index ◽  
Mangrove Species ◽  
Rhizophora Stylosa

Ecotourism development program at Bama beaches area require baseline data of mangrove structure at Bama Resort and in the past two decades has been lost about 35% area of mangrove forest in Indonesia and in the worldThe aims of this study was to find structure, composition, distribution and zonation patterns of mangroves at Bama Resort Baluran Nasional Park. Ten belt-transects were laid perpendicular to the shoreline, using standard methods. Vegetation structure was determined using data collected on plant species diversity, density, basal area, and the number of each species of mangroves. Shannon Wiener index to calculated diversity, evennes and Simpson to calculated dominance index. The results show there are 2 families and 6 mangrove species occurring in the study areas that is Rhizophoraceae (Rhizophora stylosa, Rhizophora mucronata, Rhizophora apiculata, Bruguiera gymnorrhiza, and Ceriops tagal) and Araceae (Nypa fruticans). The highest importance value was R. apiculata (229.90%) for trees, R. apiculata (148.69%) for the sapling, and R. apiculata (244.83%) for the seedling. The diversity (H) and dominance index (C) values were moderate (1.79) and 0.521. The most dominant species was R. apiculata (C=0.487). The mangrove zonation pattern from coastline to the mainland was R. stylosa, R. mucronata, and R. apiculata, in the outer zone, respectively (zone directly adjacent to the sea); B. gymnorrhiza and C. tagal in the middle zone; and N. fruticans in the zone that adjacent to the mainland. The present study will aid in the conduct and preservation planning of mangrove forest especially at Bama coast and generally in the coastal areas of Indonesia.

scholarly journals Vegetation Structure and Damage Level Mangrove Forest in Manomadehe Island, Subdistrict South Jailolo, North Maluku Province

2021 ◽  
Vol 21 (1) ◽  
pp. 222
Author(s):  
Salim Abubakar ◽  
Riyadi Subur ◽  
Masykhur Abdul Kadir ◽  
Rina Rina ◽  
Adi Noman Susanto ◽  
...  
Keyword(s):  
Relative Density ◽  
Vegetation Structure ◽  
Mangrove Forest ◽  
Mangrove Forests ◽  
Mangrove Species ◽  
Rhizophora Stylosa ◽  
Xylocarpus Granatum ◽  
Sonneratia Alba ◽  
Mangrove Vegetation ◽  
Ceriops Tagal

Mangrove forest is a natural resource typical of tropical coasts, which has multiple benefits with a very broad impact when viewed from social, economic and ecological aspects. Management of natural resources must be very prudent because it takes a long time to be able to recover when damage / extinction has occurred. The purpose of this study was to determine the composition of mangrove species, the structure of mangrove forest vegetation (species density, relative density of species, frequency of species, relative frequency of species, species cover, relative cover of species and important values) and to determine the level of damage. Extraction of mangrove vegetation using the "spot check" method. The transects are drawn perpendicular to the coastline along the mangrove vegetation. The composition of mangrove species were 7 species, namely Rhizophora apiculata, R. stylosa, Bruguirea gymnorrhiza, Ceriops tagal, Sonneratia alba, Xylocarpus granatum and Aegiceras floridum. In the vegetation structure, the highest density and relative density were found in Rhizophora stylosa and the lowest was Xylocarpus granatum. The highest species and relative frequencies were Rhizophora stylosa, R. apiculata and the lowest were Bruguiera gymnorrhiza. The highest type and closure were Sonneratia alba and the lowest was Ceriops tagal. Meanwhile, the highest importance was in Sonneratia alba and the lowest was Xylocarpus granatum. Overall, the density value of mangrove species on Manomadehe Island is 2796 trees / ha so that the condition of the mangrove forests on Manomadehe Island is still in the good category (very dense).

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