Potential of stock carbon in mangrove Sonneratia alba in Passo coastal waters, Inner Ambon Bay

Production and decomposition of mangrove litter could contribute organic matter and nutrients to the coastal waters. This study was to estimate the extent to which the rehabilitated mangrove of Rhizophora mucronata and Sonneratia alba contribute organic matter. This study was conducted from November 2015 to January 2016. Litter traps were used to collect the litter production and litterbags to measure decomposition rates. The results showed that the average of litter production for Sonneratia alba and Rhizophora mucronata was 4,38 g.m-2.day-1 and 3,61 g.m-2.day-1, respectively. However, Sonneratia alba apparently showed higher decay rates compare with Rhizophora mucronata. Nutrients element (N and P) released were 321,2 kg.ha-1.years-1 and 47,45 kg.ha-1.years-1 for Sonneratia alba; and 131,4 kg.ha-1.years-1 and 13,14 kg.ha-1.years-1 for Rhizophora mucronata. Overall, this study indicated that the mangrove rehabilitation in the area study contributed insignificantly carbon restocking the affected area, although it was able to provide ecological functions of this mangrove ecosystem.

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POTENSI KOMUNITAS MANGROVE PANTAI TIAL KABUPATEN MALUKU TENGAH

TRITON : Jurnal Manajemen Sumberdaya Perairan ◽

10.30598/tritonvol16issue2page68-76 ◽

2020 ◽

Vol 16 (2) ◽

pp. 68-76

Author(s):

Reinhardus Pentury ◽

Janson H Pietersz ◽

Maureen A Tuapattinaja ◽

Frederika S Pello ◽

Niette V Huliselan ◽

...

Keyword(s):

Coastal Waters ◽

Local Community ◽

Aquatic Organism ◽

High Rate ◽

Hemispherical Photography ◽

Observation Station ◽

Microsoft Excel ◽

Sonneratia Alba ◽

Belt Transect ◽

Photography Method

Mangrove community in Tial is potential and roles importantly for aquatic organism, local community and especially for coastal waters abrasion control in Tial. Due to the high rate abrasion in Tial, mangrove community should be maintained and conserved. Therefore, the research is done in order to analyze mangrove composition, its potency and its condition on the coast of Tial. Belt transect and hemispherical photography method are used to collect data by determining the observation station. Three plots of 10 x 10 meter squares are placed in every observation station without space in between each plot where the ≥ 15 cm of circumference trees measuring is done and canopy photo of breast height are taken up above perpendicularly. Microsoft Excel and Image J software are used to analyze collected data. The result shows that there are 9 species of mangrove from 7 genera and 5 families found in the coast of Tial. Sonneratia alba and Aegiceras floridum dominates the community where A. floriduim with 13 ind/100 m2 is the highest density species, while the frequency of occurrence and the highest dominance species is S. alba with the rate 0,67 and 2298,75 cm2/100 m2. Overall mangrove vegetation health is categorized good with a high density and in a medium canopy coverage. ABSTRAK: Komunitas mangrove merupakan komunitas yang cukup potensial dan memiliki peranan penting bagi organisme perairan sekitar dan bagi masyarakat setempat, terutama dalam mengendalikan abrasi pada pesisir pantai Tial. Laju abrasi yang terjadi pada pesisir pantai Negeri Tial cukup tinggi, sehingga keberadaan mangrove pada perairan tersebut perlu dijaga dan dilestarikan. Tujuan dari penelitian ini adalah untuk mengetahui komposisi, Potensi dan kondisi mangrove di perairan pantai Tial. Metode yang digunakan yaitu metode transek sabuk dan hemisperichal photography. Metode ini dilakukan dengan cara menentukan stasiun pengamatan, kemudian pada setiap stasiun pengamatan dibentuk petak pengamatan sebesar 10 x 10 m sebanyak tiga petak tanpa ada jarak antara petak pengamatan. Pada setiap petak pengamatan dilakukan pengambilan lingkar batang dengan ukuran ≥ 15 cm dan pengambilan foto kanopi dengan memotret setinggi dada secara tegak lurus kearah atas. Software Microsoft Excel dan Image J digunakan untuk menganalisis data pengukuran lingkar batang dan hasil foto kanopi. Dari hasil analisis diperoleh 9 spesies mangrove yang tergolong dalam 7 genera dan 5 famili. Sonneratia alba dan Aegiceras floridum merupakan spesies mangrove yang mendominasi komunitas mangrove pantai Tial. Kerapatan spesies tertinggi adalah A. floridum sebesar 13 ind/100m2, sedangkan frekuensi kehadiran dan dominasi spesies tertinggi adalah S. alba dengan nilai masing-masing 0,67 dan 2298,75 cm2/100m2. Kondisi kesehatan mangrove secara keseluruhan pada pantai Tial masih dalam kondisi baik dengan kerapatan mangrove tergolong padat dan tutupan kanopi tergolong sedang. Kata Kunci: mangrove, potensi, komunitas, kesehatan, pantai

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Keanekaragaman Jenis Dan Dominansi Mangrove Di Pesisir Pantai Desa Sehati Kecamatan Amahai, Kabupaten Maluku Tengah

Biosel Biology Science and Education ◽

10.33477/bs.v8i2.1145 ◽

2020 ◽

Vol 8 (2) ◽

pp. 160

Author(s):

PATRICIA SIPAHELUT ◽

D WAKANO ◽

D E SAHERTIAN

Keyword(s):

Species Diversity ◽

Coastal Waters ◽

Marine Biota ◽

Mangrove Species ◽

Species Dominance ◽

Nypa Fruticans ◽

Sonneratia Alba ◽

Bruguiera Gymnorhiza ◽

Bruguiera Cylindrica ◽

The Tropics

Geographically, Indonesia is in the tropics. This causes Indonesian waters to become increasingly rich in various types of marine biota which must be found in coastal waters. Coastal waters are places where various ecosystems with high organic productivity are found, one of which is mangrove. Mangroves are plants that live in coastal areas whose lives are always influenced by tidal currents. This study will explain how the diversity of mangroves and how the dominance of mangrove species on the coast of Sehati Village, Amahai District, Central Maluku Regency. This research was conducted to determine the species diversity and dominance of mangrove species. So that the results of this study show that in the coastal waters of Desa Sehati, Amahai Subdistrict, Central Maluku Regency, 5 mangrove species were found, namely Rhizophora mucronata, Bruguiera cylindrica, Bruguiera gymnorhiza, Sonneratia alba and Nypa fruticans which were members of 2 classes (Magnoliopsida and Liliopsida), 2 orders (Myrtales and Arecales), 3 families (Rhizophoraceae, Sonneratiaceae and Arecaceae), and 4 genera (Rhizophora, Bruguiera, Sonneratia and Nypa) with medium species diversity indexes and low species dominance. Key Words: Mangrove, Species Diversity, Species Dominance

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