Author:
Sewell Sven R.,Catterall Carla P.
Abstract
Variation in bird assemblages associated with forest clearing and urbanisation
in the greater Brisbane area was assessed by counting birds in sites within
six habitat categories: large remnants, small remnants, no- understorey
remnants, canopy suburbs (original trees present), planted suburbs, and bare
suburbs. Total bird abundance and species richness were generally highest in
canopy suburbs. Individual species showed many significant abundance
differences among the habitat types, and were classified into three major
response categories: bushland species (3 in summer, 13 in winter), tolerant
species (13 in summer, 13 in winter), and suburban species (12 in summer, 11
in winter).
The commonly proposed notion that urbanisation results in lowered bird species
richness and increases in introduced species is broadly consistent with the
observed differences between bare suburbs and large remnants. However, it does
not adequately describe the situation in the planted and canopy suburbs, where
there was high species richness and extremely high abundance of some native
species (including noisy miners, lorikeets, friarbirds, and butcherbirds) but
low abundance of a majority of the species common in the original habitats
(including fantails, wrens, whistlers, and other small insectivores). Retained
forest remnants are essential for the latter group. Urban plantings of
prolifically flowering native species do not reverse the effects of
deforestation, but promote a distinctive group of common native suburban bird
species. Origins of the urban bird assemblage are discussed.
Subject
Management, Monitoring, Policy and Law,Ecology, Evolution, Behavior and Systematics
Cited by
129 articles.
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