Bali memiliki banyak daerah yang berpotensi sebagai daerah tujuan wisata alam, salah satunya dengan memanfaatkan kawasan di sekitar Sungai Ayung. Sungai merupakan ekosistem terbuka, sehingga berkaitan erat dengan vegetasi riparian. Desa Bongkasa Pertiwi, Kecamatan Abiansemal, Kabupaten Badung, Bali merupakan salah satu desa yang berada di tepi Sungai Ayung. Penelitian ini bertujuan untuk mengetahui komposisi vegetasi riparian di sekitar Sungai Ayung di Desa Bongkasa Pertiwi. Penentuan komposisi vegetasi riparian menggunakan metode plot, kemudian dianalisis untuk memperoleh parameter vegetasi dan lingkungan. Untuk mengetahui potensi wisata alam digunakan metode observasi dengan mengamati jenis tumbuhan yang memiliki interaksi khas dengan fauna setempat. Berdasarkan hasil penelitian, diperoleh bahwa vegetasi riparian yang terletak ke arah daratan memiliki struktur vegetasi yang lebih stabil dengan regenerasi jenis yang lebih baik dibandingkan dengan vegetasi riparian yang terletak ke arah Sungai Ayung. Secara umum, komposisi vegetasi riparian menunjukkan eksistensi dari pohon khas riparian, seperti bayur (Pterospermum javanicum). Bayur menjadi salah satu pohon penting yang berperan dalam mendukung wisata alam di Desa Bongkasa Pertiwi karena memiliki i interaksi dengan fauna lokal seperti burung alap-alap kawah (Falco peregrinus), burung pelatuk besi (Dinopium javanense), burung kadalan birah (Phaenicophaeus curvirostris), dan burung cucak kuning (Pycnonotus melanicterus).

Ayung river is the longest river in Bali. The middle part of the river is frequently utilized as rafting for tourism, such as in Bongkasa Pertiwi Village, Abiansemal District, Badung Regency – Bali. To preserve the river’s ecological function, the information of riparian vegetation as the dynamic component in river is highly required. This research aimed to study the structure of riparian vegetation in Bongkasa Pertiwi Village. The plot method was used and the study site was divided into three stations. Each station was composed by three replications with four plot variations: trees (20 x 20 m), poles (10 x 10 m), saplings (5 x 5), and herbs-shrubs (2 x 2 m). The data was analysed using vegetation analysis that completed with Importance Value (IV), Shannon-Wiener Diversity Index (H’), Index of Dominancy (C), and Index of Evenness (E). This study found that the structure of riparian vegetation in Bongkasa Pertiwi Village was in good condition which was indicated by the high abundance of local tree species. The floristic composition of riparian vegetation comprised by 18 species of trees, 18 species of poles, 21 species of saplings, and 29 species of herbs and shrubs. Cocos nucifera, Pterospermum javanicum, Bischofia javanica, Cananga odorata, Elaeocarpus serratus, Artocarpus heterophyllus, Coffea canephora, and Nephelium lappaceum were the species with the highest Importance Value (IV). The floor vegetation in form of herbs and shrubs was dominated by Sphaegneticola trilobata, Oplismenus burmanni, and Diplazium esculentum. Based on the Diversity Index (H’), Index of Dominancy (C), and Index of Evenness (E), diversity of riparian vegetation in Bongkasa Pertiwi Village was classified as medium category, without any dominated species, and the vegetation composition was equivalent.

Abstract. Yuni LPEK, Wijaya IMS, Sari IAEP. 2022. Assessing the bird and tree species diversity in the north of Badung, Bali, Indonesia. Biodiversitas 23: 4482-4489. Bird diversity is related to tree diversity, which is influenced by landscape heterogeneity. Here, we reported the bird diversity of Jempanang, Bali, Indonesia, in riparian, plantation, and forest edge habitats estimated through a point count survey undertaken in June 2021, and related to patterns of tree diversity. Overall, Jempanang had a high diversity of bird and tree species, with 54 bird species and 18 tree species recorded in total. Among habitats, bird diversity was highest in the riparian area, whereas the plantation and forest edges had moderate bird diversity. The plantation had the lowest absolute tree diversity, but all sites had a moderate level of tree diversity. The wide range of land uses in Jempanang provides a diverse composition of plant species, thereby increasing the number of environmental niches and driving higher diversity of bird species. The presence of apex raptor species indicates that Jempanang can be considered an area with good environmental quality. Considering the high diversity of bird and tree species in the area, birdwatching activities could be promoted as an agent for community-based conservation, potentially providing local incentives for preserving the area’s biodiversity.