Avian assemblage along an urban gradient: diversity, abundance and richness

Abstract

Diversity in avian assemblages of urban (UR), peri-urban (PE) and rural (RU) areas was studied to explore variations in the avian community dynamics in rural – urban gradient. For this purpose, sampling was done from September 2013 to August 2015. A total of 35 sites, each covering an area of 300 m2 were sampled by using point count method. At each site, randomly three points (minimally 5 m apart from each other) were selected to study the birds. According to data, species richness (F2, 32=47.18, P<0.001) varied significantly along a rural-urban gradient. A significant difference in avian density per sampling site (F2, 32=105.41, P<0.001) was also observed along urbanization gradient. In PE and RU areas, avian assemblages were more diverse than UR areas. Among avian guilds, omnivores were the most abundant in UR while insectivores in PE areas. Frugivores and carnivores were abundant in RU areas. Granivores were recorded in all habitats with similar diversity. A close association was recorded in bird density of RU and PE areas than UR areas. Bird species richness and diversity showed negative correlation with built area and positive correlation with vegetation cover in an area.

Keanekaragaman Jenis Burung di Kecamatan Sukamakmur Kabupaten Bogor Provinsi Jawa Barat

“…Burung adalah komponen ekosistem yang unik serta dapat dijumpai di berbagai tipe lanskap, baik lanskap alami (natural landscape) maupun lanskap buatan (manmade landscape), termasuk juga lanskap pedesaan (rural landscape). Walaupun bukan habitat ideal bagi burung, karena kemampuannya yang terbatas, namun lanskap pedesaan masih mampu menjadi bagian dari habitat burung dengan dijumpainya burung di lanskap pedesaan (Rashid et al, 2020;Vitorino et al, 2018;Dewantara et al, 2015). Tingkat keanekaragaman jenis burung di lanskap pedesaan berada diantara keanekaragaman jenis burung di lanskap alami dan lanskap perkotaan (urban landscape).…”