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Journal : METAMORFOSA Journal of Biological Sciences

Komposisi Floristik Vegetasi di Kawasan Hilir Sungai Unda, Kabupaten Klungkung, Bali I Made Sara Wijana; I Made Saka Wijaya; Abd. Rahman As-syakur; Gede Surya Indrawan; Putu Angga Wiradana; Komang Kartika Indi Swari; Dewa Ayu Intan Tirta Sari
Metamorfosa: Journal of Biological Sciences Vol 9 No 1 (2022)
Publisher : Prodi Magister Ilmu Biologi, Fakultas MIPA, Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/metamorfosa.2022.v09.i01.p03

Abstract

The downstream area of Unda River Watershed located in Klungkung Regency has experienced succession due to the eruption of Mount Agung in 1963. The ecosystem in the downstream area of the Unda River also experienced anthropogenic succession due to human activities which affected the plant species that composing the vegetation. This study aims to observe the floristic composition of vegetation in the downstream area of the Unda River. The research was conducted by exploration method in three types of ecosystems: lowland forest, marshes, and beaches. The results show the floristic composition in the downstream of Unda River composed by 163 plant species, classified in 48 families and 128 genera. The major growth form is small herb (47 species), grass (35 species), and tree (31 species). Fabaceae is the plant family with the most abundant species, followed by Poaceae and Cyperaceae. Based on the research zones, the lowland forest has the highest number of plant species (120 species), while the beach zone has the lowest (82 species). The ecosystem stability in the downstream area of Unda River can be disturbed by the existence of invasive species, such as Eichhornia crassipes, Chromolaena odorata, Lantana camara, Ipomoea carnea, Vachellia farnesiana, and Typha angustifolia.
Struktur dan Komposisi Gulma di Lahan Jagung (Zea mays L.) Desa Belayu Kecamatan Marga Kabupaten Tabanan Provinsi Bali Risqa Izzatul Zulfa; Martin Joni; I Made Saka Wijaya
Metamorfosa: Journal of Biological Sciences Vol 10 No 1 (2023)
Publisher : Prodi Magister Ilmu Biologi, Fakultas MIPA, Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/metamorfosa.2023.v10.i01.p05

Abstract

Jagung (Zea mays L.) merupakan salah satu tanaman pangan penghasil karbohidrat yang terpenting di dunia. Salah satu permasalahan dalam produksi jagung adalah penurunan kuantitas dan kualitas jagung akibat adanya gulma yang tumbuh di sekitar tanaman jagung. Penelitian ini bertujuan untuk mengetahui struktur dan komposisi gulma di lahan jagung Desa Belayu, Kecamatan Marga, Kabupaten Tabanan, Provinsi Bali. Metode yang digunakan dalam penelitian ini adalah metode kuadrat (Quadrat methode sampling) denganplot berukuran 1x1 m. Data dianalisis menggunakan parameter vegetasi yang terdiri dari Indeks Nilai Penting (INP), indeks keanekaragaman (H’), indeks dominansi (C), indeks kemerataan (E), dan indeks similaritas (IS). Hasil yang didapat yaitu komposisi gulma yang ditemukan pada minggu ke-3 yaitu 18 spesies dari 9 suku, pada minggu ke-6 yaitu 25 spesies dari 16 suku, dan pada minggu ke- 9 yaitu 31 spesies dari 19 suku. Nilai INP tertinggi ditemukan pada Cyperus rotundus L dari suku Cyperaceae pada minggu ke-3, ke-6, dan ke-9 . Indeks keanekaragaman (H’) gulma tergolong sedang berkisar 2,29-2,77, indeks dominansi (C) menunjukkan tidak ada gulma yang mendominansi dengan nilai berkisar 0,09-0,13, indeks kemerataan (E) menunjukkan bahwa jenis-jenis gulma tergolong merata dengan nilai berkisar 0,78-0,80, dan indeks similaritas (IS) sebesar 72,9% yang menunjukkan bahwa similaritas spesies gulma disetiap minggu dikategorikan tinggi.
Indeks Ekologi dan Status Konservasi Jenis Burung (Avifauna) di Desa Gunaksa dan Beberapa Wilayah di Sekitarnya di Kabupaten Klungkung, Bali I Made Sara Wijana; I Made Saka Wijaya; M. Rheza Rizki Syahputra; Gde Oka Widiyavedanta; Egmont congdenjit; Gede Surya Indrawan; Abd. Rahman As-syakur; Putu Angga Wiradana
Metamorfosa: Journal of Biological Sciences Vol 8 No 2 (2021)
Publisher : Prodi Magister Ilmu Biologi, Fakultas MIPA, Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/metamorfosa.2022.v08.i02.p07

Abstract

The Gunaksa Village and several surrounding areas in Klungkung Regency, Bali have the potential to be developed as one of the international ecotourism destinations in Indonesia. This study aims to determine the diversity and status of bird species (avifauna) in the Gunaksa Village Area and several surrounding areas so that it is expected to be the basis for information on natural resource management in this area. The method used is the "Cruise method", which is tracing paths that can be used to represent various types of ecosystems in the research area. The results showed that 46 species of birds were obtained with the highest Relative Abundance Index (RAI) value obtained by the buffalo egret (Bubulcus ibis) of 9.50% (dominant). The ecological index of bird species shows a high category in the Diversity Index (H') (3.16), Richness Index (R) (7.15), and Evenness Index (E) (1.87). Species of the black-winged kite, Javan ermine, Christmas frigatebird, and Pied fantail are protected species based on the Regulation of the Minister of Environment and Forestry of the Republic of Indonesia Number p.106/menlhk/setjen/kum.1/12/2018, while only the frigatebird Christmas is included in the IUCN RedList with the Critical (CR) category. Conservation efforts and the participation of government agencies, academics, practitioners and the community are needed to increase the environmental awareness of the Gunaksa area and its surroundings for the sustainability of Avifauna in the area.