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Diversity of Orchids in Mangrove Forest of South Sorong

This paper presents orchid found in a mangrove forest of South Sorong Regency, West Papua. The orchids are listed from sample plots laid for the purpose to estimate the standing stock of mangrove trees in this region. 15 Species from nine genera has been identified. These orchids are Dendrobium, leading with four species, followed by Bulbophyllum with three species and Grammatophyllum with two species. The other six genera are Agrostophyllum, Calanthe, Diplocaulobium, Pholidata, Robiquetia, and Thrixperum are represented by one species. One of them Calanthe sp, is a ground orchid, the rest are epiphytic orchids. The most favorite host tree is Bruguiera gymnorhiza, where many orchids like ti grow on it abundantly. Using Shannon-Wieners function, the diversity index of orchids is calculated. The results reveal that diversity index of orchids can be categorized as high (near maximum) (H’) = 1.11123 and (J) = 0.748. This means that 74.8 % the genera have diversity in the amount of individual switch in the genus.

Universitas Papua

Antoni Ungirwalu Matheus St. E. Kilmaskossu Sepus Fatem

Beccariana Botanical Research Bulletin

2018

Title: Diversity of Orchids in Mangrove Forest of South Sorong

Description:

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The orchids are listed from sample plots laid for the purpose to estimate the standing stock of mangrove trees in this region.

15 Species from nine genera has been identified.

These orchids are Dendrobium, leading with four species, followed by Bulbophyllum with three species and Grammatophyllum with two species.

The other six genera are Agrostophyllum, Calanthe, Diplocaulobium, Pholidata, Robiquetia, and Thrixperum are represented by one species.

One of them Calanthe sp, is a ground orchid, the rest are epiphytic orchids.

The most favorite host tree is Bruguiera gymnorhiza, where many orchids like ti grow on it abundantly.

Using Shannon-Wieners function, the diversity index of orchids is calculated.

The results reveal that diversity index of orchids can be categorized as high (near maximum) (H’) = 1.

11123 and (J) = 0.

748.

This means that 74.

8 % the genera have diversity in the amount of individual switch in the genus.

.

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Diversity of Orchids in Mangrove Forest of South Sorong

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