Deforestation, urbanisation and seasonality: Interacting effects on a regional bird assemblage
Deforestation, urbanisation and seasonality: Interacting effects on a regional bird assemblage
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DOI：
10.1016/s0006-3207(97)00076-1
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发表时间：
1998-04-01
影响因子：
5.9
通讯作者：
Sewell, S
中科院分区：
文献类型：
--
作者：
Catterall, CP;Kingston, MB;Sewell, S
我们评估了在澳大利亚亚热带昆士兰州东南部快速城市化的低地，桉树林和林地（丛林）转化为清除或开发的土地对鸟类群落的影响。在56种被分析的物种中，大多数在灌木林和空地之间显示出巨大而显著的密度差异：22种（39%）被归类为“灌木林物种”，13种（23%）被归类为“发达陆地物种”，21种（38%）被归类为“通才”或“不一致”。“丛林地带”的物种与其他研究中发现的自欧洲人定居以来表现出区域衰退的物种有很强的对应关系，而“发达土地”的物种与那些表现出区域扩张的物种有很强的对应关系。夏季和冬季丰度的比较也显示出许多物种的巨大差异，主要是由于季节性迁移。本研究的低地桉树林遗迹的特点是：(1)存在一套独特的常见鸟类，不同于那些出现在清除和开发地区的鸟类；(2)冬季的总密度比夏季高得多，主要是由于依赖丛林的冬季移民。随着栖息地的不断丧失，后者面临着进一步减少的风险。相比之下，发达地区鸟类群落的季节差异较小。1998爱思唯尔科学有限公司版权所有。
We assessed the effects of conversion of eucalypt forests and woodlands (bushland) to cleared or developed land on bird communities in the rapidly urbanising lowlands of south east Queensland, in subtropical Australia. The majority of 56 species analysed showed large and significant density differences between bushland and cleared land: 22 (39%) were classed as 'bushland species', 13 (23%) as 'developed land species', and 21 (38%) as 'generalists' or 'inconsistent'. 'Bushland' species showed a strong correspondence with those identified in other studies as exhibiting regional declines since European settlement, whereas 'developed land' species corresponded with those exhibiting regional expansions. Comparisons of summer and winter abundance also showed large differences in many species, mainly because of seasonal migration. Lowland eucalypt forest remnants of this study were characterised by (I) the presence of a suite of distinctive common bird species different from those which occur in cleared and developed areas, and (2) substantially higher total densities in winter than in summer, due mainly to bushland-dependent winter immigrants. The latter are at risk of further declines with ongoing habitat loss. In contrast, bird communities of the developed areas showed few seasonal differences. (C) 1998 Elsevier Science Ltd. All rights reserved.