Bamboo specialization by Amazonian birds
Bamboo specialization by Amazonian birds
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DOI：
10.1111/j.1744-7429.1997.tb00011.x
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发表时间：
1997-03-01
期刊：
影响因子：
2.1
通讯作者：
Kratter, AW
中科院分区：
文献类型：
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作者：
Kratter, AW
在秘鲁东南部的低地森林中，使用了领土规格图来记录19种鸟类对竹丛(Guadua Weberbaueri)的限制。这些物种被定义为竹子专家。另有7个物种表现出对这种灌木丛的偏好，但也使用其他栖息地。这些结果与以前对竹子专家栖息地偏好的定性描述相一致。至少有4名专家被限制在其整个地理范围内的灌木丛中(专职竹子专家)；另外9名专家可以使用远离秘鲁东南部的其他栖息地(近乎专职竹子专家)；其余6个物种经常使用远离秘鲁东南部缺乏竹子的栖息地(兼职竹子专家)。13名近乎专职和兼职的专家使用的非竹子栖息地主要是郁闭度较低的栖息地，包括树冠空隙和河流沿线的早期演替植被。专职和近乎专职的专家通常以亚马逊河流域西南部为中心，地理范围较小；少数在巴西东南部有姐妹分类群，也是竹子专家，这表明它们有共同的进化史。兼职的专家一般都很普遍。竹子专家在竹子栖息地比在更广泛的栖息地的其他鸟类物种更丰富。
Spec-mapping of territories was used to document the restriction of nineteen bird species to thickets of bamboo (Guadua weberbaueri) in lowland forests in southeastern Peru. These species were defined as bamboo specialists. An additional seven species showed a preference for such thickets, but also used other habitats. These results correspond with previous, qualitative descriptions of the habitat preferences of bamboo specialists. At least four specialists are restricted to thickets throughout their entire geographic range (obligate bamboo specialists); another nine specialists may use other habitats sparingly away from southeastern Peru (near-obligate bamboo specialists); the remaining six species are frequent users of habitats lacking bamboo away from southeastern Peru (facultative bamboo specialists). The nonbamboo habitats used by the 13 near-obligate and facultative specialists are predominantly dense habitats with low canopy cover, including treefall gaps and early successional vegetation along rivers. The obligate and near-obligate specialists generally have small geographic ranges centered in southwestern Amazonia; a few have sister taxa in southeastern Brazil that are also bamboo specialists suggesting a common evolutionary history. The facultative specialists are generally mote widespread. Bamboo specialists are more abundant in bamboo habitats than are other bird species in more generalized habitats.