AVIS-IBIS

Birds of Indian Subcontinent

Habitat Loss and the Decline of Grey-faced Buzzards (Butastur indicus) in Tokyo, Japan

Publication Type:Journal Article
Year of Publication:2006
Authors:Ueta, M, Kurosawa, R, Matsuno, H
Journal:Journal of Raptor Research
Volume:40
Issue:1
Date Published:2006
ISBN Number:0892-1016
Keywords:Accipitridae, Butastur, Butastur indicus, Buteo, Buteo buteo, Japan
Abstract:ABSTRACT The occurrence of Grey-faced Buzzard (Butastur indicus) in central Japan was studied in the 1970s and 1990s. There was a significant decline in the number of Grey-faced Buzzards sighted; from 28 survey squares in the 1970s to zero in the 1990s. In the Tokyo areas, the amount of edge between forests and paddy fields, which was probably an important habitat for the buzzard, was markedly decreased from 1.1 ± 1.5 km in the 1970s to 0.3 ± 0.6 km in the 1990s. The decline of Grey-faced Buzzards breeding in the Tokyo region probably was caused by the habitat loss resulting from abandonment or development of traditional paddy fields (yatoda). These human modifications probably reduced populations of suitable prey.ABSTRACT The occurrence of Grey-faced Buzzard (Butastur indicus) in central Japan was studied in the 1970s and 1990s. There was a significant decline in the number of Grey-faced Buzzards sighted; from 28 survey squares in the 1970s to zero in the 1990s. In the Tokyo areas, the amount of edge between forests and paddy fields, which was probably an important habitat for the buzzard, was markedly decreased from 1.1 ± 1.5 km in the 1970s to 0.3 ± 0.6 km in the 1990s. The decline of Grey-faced Buzzards breeding in the Tokyo region probably was caused by the habitat loss resulting from abandonment or development of traditional paddy fields (yatoda). These human modifications probably reduced populations of suitable prey.
URL:http://dx.doi.org/10.3356/0892-1016(2006)40[52:HLATDO]2.0.CO;2
Short Title:Journal of Raptor Research
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