DRAJATI, FATHIA (2023) STRUKTUR KOMUNITAS MANGROVE DI TAMAN NASIONAL KARIMUNJAWA (23dik398). Undergraduate thesis, Fakultas Perikanan dan Ilmu Kelautan.

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Abstract

ABSTRAK
(Fathia Drajati. 26040119140184. Struktur Komunitas Mangrove di Taman Nasional Karimunjawa. Nirwani Soenardjo dan Ria Azizah Tri Nuraini).
Mangrove merupakan tanaman yang mampu tumbuh di daerah pasang surut atau biasa disebut daerah litoral. Ekosistem mangrove di Taman Nasional Karimunjawa tumbuh di sepanjang pesisir pantai dan muara sungai. Keberadaan ekosistem mangrove penting untuk menjaga keseimbangan ekosistem pesisir. Kondisi ekosistem mangrove di Taman Nasional Karimunjawa tergolong baik dan rapat. Penelitian ini dilakukan untuk mengetahui vegetasi dan struktur komunitas mangrove di Taman Nasional Karimunjawa. Metode penelitian ini ialah metode eksplorasi dengan menjelajah seluruh kawasan stasiun penelitian. Stasiun penelitian terbagi menjadi empat yaitu Stasiun 1 Legon Nipah, Stasiun 2 Nyamplungan, Stasiun 3 Legon Lele, Stasiun 4 Jatikerep yang ditentukan menggunakan metode purposive sampling. Pengambilan data vegetasi dilakukan menggunakan teknik plot sampling di setiap stasiun. Teknik ini digunakan dengan plot ukuran 10x10 m. Setiap individu kategori pohon dan anakan di dalam plot diukur keliling batang dan tingginya sementara kategori semai dihitung jumlah masing-masing jenisnya. Penelitian ini dilaksanakan pada bulan November 2022. Penelitian menemukan 9 jenis mangrove 8 diantaranya ditemukan dalam plot. Vegetasi mangrove di Taman Nasional Karimunjawa memiliki nilai kerapatan berkisar 933 – 1300 ind/ha. Mangrove yang mendominasi lokasi penelitian ialah Rhizophora sp. Nilai Indeks Keanekaragaman tergolong kategori sedang dengan nilai keanekaragaman 1≤ H’ ≤ 3 dan Indeks Keseragaman tergolong kategori sedang dan tinggi dengan nilai masing-masing yaitu 0,61 dan 0,88.
Kata Kunci: Mangrove; Indeks Keanekaragaman; Indeks Keseragaman; Karimunjawa

ABSTRACT
(Fathia Drajati. 26040119140184. Mangrove Community Structure In Karimunjawa National Park. Nirwani Soenardjo dan Ria Azizah Tri Nuraini).
Mangroves are plants that are able to grow in tidal areas or commonly called littoral areas. Mangrove ecosystems in Karimunjawa National Park grow along the coast and river estuaries. The existence of mangrove ecosystems is important to maintain the balance of coastal ecosystems. The condition of the mangrove ecosystem in Karimunjawa National Park is classified as good and tight. This study was conducted to determine the vegetation and structure of mangrove communities in Karimunjawa National Park. This research method is an exploration method by exploring the entire research station area. The research station is divided into four namely Station 1 Legon Nipah, Station 2 Nyamplungan, Station 3 Legon Lele, Station 4 Jatikerep which is determined using purposive sampling method. Vegetation data were collected using plot sampling technique at each station. This technique is used with a plot size of 10x10 m. Each individual tree and sapling category in the plot was measured by the circumference of the trunk and its height while the seedling category was counted the number of each type. This research was conducted in November 2022. The study found 9 mangrove species, 8 of which were found in the plot. Mangrove vegetation in Karimunjawa National Park has a density value ranging from 933 - 1300 ind/ha. Mangroves that dominate the research site are Rhizophora sp. The Diversity Index value is classified as a medium category with a diversity value of 1≤ H' ≤ 3 and the Uniformity Index is classified as a medium and high category with values of 0.61 and 0.88 respectively.
Keywords: Mangroves; Diversity Index; Uniformity Index; Karimunjawa

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