The diversity of plant species in a mangrove forest in the Coast of Metinaro, Timor-Leste

Komposisi dan vegetasi ekosistem mangrove pada suatu kawasan yang tumbuh di pulau-pulau kecil umumnya tidak sama dan tergantung kepada ekologi dari ekosistem pulau tersebut. Tujuan ini penelitian ini adalah untuk memperoleh informasi dari komposisi, struktur vegetasidan jenis mangrove yang hidup pada masing-masing pulau kecil di kawasan Pasaman Barat. Metode ang digunakan adalah survei lapangan untuk mendapatkan jenis, komposisi dan struktur vegetasi dari masing-masing pulau dengan melakukan teknik transek kuadrat. Pada penelitian yang telah dilakukan di beberapa tiga pulau di Kabupaten Pasaman Barat (pulau Taming, pulau Harimau, dan pulau Panjang) menunjukkan bahwa ke tiga pulau tersebut telah teridentifikasi tumbuhan 15 spesies, 11 famili, 2 famili dan 5 spesies merupakan masuk pada kategori mangrove sejati dan spesies dominan adalah R. stylosa dengan indek nilai penting (IVi) untuk tingkat pohon 192,88% di pulau Taming, pulau Harimau 36 spesies, 24 famili, 9 spesies dan 4 famili masuk pada mangrove sejati, spesies dominan R. apiculata, (IVi ) adalah 229,82%, sedangkan pada pulau Panjang 18 spesies, 14 famili, dimana 5 spesies dan 2 famili masuk kategori mangrove sejati, spesies dominan R. mucronata dengan (IVi ) 92,98%. Dari masing-masing pulau menunjukkan komposisi, struktur vegetasi dan kedominan speises yang berbeda dan ini disebabkan oleh perbedaan subtrat yang dominan yang terdapat pada masing-masing pulau. Kata kunci: komposisi; vegetasi; mangrove, pulau-pulau kecil; Pasaman Barat Composition and vegetation of mangrove ecosystem in an area including that grown in small islands is different and depends on ecology and ecosystem of the islands. The purpose of the research is for getting the information of composition, vegetation structure and mangrove type that grown an each small islands in west Pasaman area. The method use was a survey of the field to get the type, composition and vegetation structure of each island by using transectsquares technique.In the research that has been done on several islands in the West Pasaman (Taming Island, Harimau Island, and Panjang Island), have been identified plants on Tamang Island that had 15 species and 11 families, which 2 families and 5 spesies were categorized as true mangroves and the dominant spesies is R. stylosa with important value index (IVi) is 192.88%, on Harimau Island found 36 species and 24 families, which 9 species and 4 families were categorized as true mangroves and the dominant is R. apiculata with 229.82% (Vi), while on Panjang Island found 18 plant species and 14 families, which 5 species and 2 families were categorized as true mangroves, the dominant species is R. mucronata with 92.98%. From each island showed composition, vegetation structure and different dominant spesies and this different is caused by the dominant substrate fand on each island. Keywords: composition; vegetation; mangrove; small islands; West Pasaman

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Suku Phyllanthaceae pada Rawa Bakau dan Tambak di Telang Asri, Kabupaten Bangkalan, Pulau Madura

Jurnal Sumberdaya Hayati ◽

10.29244/jsdh.6.1.8-12 ◽

2020 ◽

Vol 6 (1) ◽

pp. 8-12

Author(s):

Arifin Surya Dwipa Irsyam ◽

Muhammad Rifqi Hariri ◽

Rina Ratnasih Irwanto ◽

Ashari Bagus Setiawan

Keyword(s):

Field Study ◽

Plant Species ◽

Mangrove Forest ◽

Deciduous Forest ◽

Specimen Preparation ◽

Phyllanthus Amarus ◽

Mangrove Swamp ◽

Mixed Deciduous Forest ◽

Dry Seasons ◽

Limestone Soil

Madura island is known as a mixed deciduous forest area with dry seasons and limestone soil. The island has unique plant species compared to the mainland Java. However, most of the mangrove forest areas have been converted into ponds and housing. One of the remaining mangrove swamps is located at Telang Asri village, Kamal Subdistrict, Bangkalan Regency. Several species of mangroves have been reported here, along with other groups of plants from the Phyllanthaceae family, found numerously at the time of observation. In 1963, CA Backer and RC Bakhuizen van den Brink Jr. have already listed 16 species of Phyllanthaceae from Madura Island. Since then, the updated information on the Phyllanthaceae of Madura has not been available. Therefore, this study aimed to collect the members of Phyllanthaceae family in the mangrove swamp areas of Telang Asri village. The field study was carried out using the exploratory method, while specimen preparation was conducted in Herbarium Bandungense (FIPIA). In this study, seven species were collected from Telang Asri, namely Glochidion littorale Blume, G. zeylanicum (Gaertn.) A. Juss., Phyllanthus amarus Schumach. and Thonn., P. debilis Klein ex Willd., P. reticulatus Poir., P. urinaria L., and P. virgatus G. Forst.

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Plant species- and stage-specific differences in microbial decay of mangrove leaf litter: the older the better?

Oecologia ◽

10.1007/s00442-021-04865-3 ◽

2021 ◽

Author(s):

Novia Arinda Pradisty ◽

A. Aldrie Amir ◽

Martin Zimmer

Keyword(s):

Organic Matter ◽

Leaf Litter ◽

Plant Species ◽

Total Phenolic Content ◽

Mangrove Forest ◽

Phenolic Content ◽

Early Stage ◽

Decay Rates ◽

Total Phenolic ◽

Litter Mass

AbstractLeaf litter and its breakdown products represent an important input of organic matter and nutrients to mangrove sediments and adjacent coastal ecosystems. It is commonly assumed that old-grown stands with mature trees contribute more to the permanent sediment organic matter pool than younger stands. However, neither are interspecific differences in leaf decay rates taken into account in this assumption nor is our understanding of the underlying mechanisms or drivers of differences in leaf chemistry sufficient. This study examines the influence of different plant species and ontogenetic stage on the microbial decay of mangrove leaf litter. A litterbag experiment was conducted in the Matang Mangrove Forest Reserve, Malaysia, to monitor leaf litter mass loss, and changes in leaf litter chemistry and microbial enzyme activity. Four mangrove species of different morphologies were selected, namely the trees Rhizophora apiculata and Bruguiera parviflora, the fern Acrostichum aureum and the shrub Acanthus ilicifolius. Decay rates of mangrove leaf litter decreased from A. ilicifolius to R. apiculata to B. parviflora to A. aureum. Leaf litter mass, total phenolic content, protein precipitation capacity and phenol oxidase activity were found to decline rapidly during the early stage of decay. Leaf litter from immature plants differed from that of mature plants in total phenolic content, phenolic signature, protein precipitating capacity and protease activity. For R. apiculata, but not of the other species, leaf litter from immature plants decayed faster than the litter of mature plants. The findings of this study advance our understanding of the organic matter dynamics in mangrove stands of different compositions and ages and will, thus, prove useful in mangrove forest management.

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Assessment Of Angiosperm Plant Diversity Of Nijhum Dweep, Bangladesh

Journal of the Asiatic Society of Bangladesh Science ◽

10.3329/jasbs.v41i1.46068 ◽

2015 ◽

Vol 41 (1) ◽

pp. 19-32

Author(s):

Mohammad Zashim Uddin ◽

Md Golam Kibria ◽

Md Abul Hassan

Keyword(s):

Data Analysis ◽

Plant Species ◽

Plant Diversity ◽

Mangrove Forest ◽

Small Island ◽

Cultivated Land ◽

Bruguiera Gymnorrhiza ◽

Species Analysis ◽

The Status ◽

Tamarix Gallica

The present article focuses the status of angiosperm plant diversity of Nijhum Dweep, a small Island in the Bay of Bengal close to Hatiya channel. From the analysis of the data a total of 152 plant species belonging to 56 families has been recorded. Among the recorded species, tree is represented by 66, shrub by 15, herbs by 58 and 13 by climbers. Of the species recorded from the area 51% species represented by 11 families and 49% represented by 45 families. Fabaceae appears to be largest in the Dicotyledones having 10 species whereas Poaceae is the largest in Monocotyledones having 12 species. Analysis confirmed that 68% of the recorded species found to be medicinal and 32% are used for other than medicinal purposes. Data analysis also showed that homesteads supported maximum plants followed by road side, cultivated land, mangrove and mangrove meadows. Collected data revealed that the occurrence of seven species namely Bruguiera gymnorrhiza, Diospyros blancoi, Derris trifoliata, Heliotropium curassavicum, Tamarix gallica, Typha elephentanea and Sarcolobus carinatus in the study area might be rare. Dolichandrone spathacea, a threatened of plant species of Bangladesh, was also found in this mangrove forest area. Through observations and discussion with local people, a number of threats to plant diversity have been identified. Finally, a number of possible conservation measures have been suggested for the management of angiosperm plant diversity of Nijhum Dweep. Asiat. Soc. Bangladesh, Sci. 41(1): 19-32, June 2015

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