In the southern United States, some landowners have established plantations of eucalyptus (Eucalyptus spp.) and are managing them on short rotations (<15 years) to provide wood for fiber and other potential uses. Establishment of short-rotation woody crops dominated by nonnative species has implications for resident fauna in the United States that are largely unknown. We compared avifauna abundance, diversity, and community composition in newly established Camden white gum (Eucalyptus benthamii) plantations with slash pine (Pinus elliottii) plantations of the same age and height (one to two and six to seven years old, respectively) in southwestern Louisiana, USA. Species richness, diversity, and community composition in newly established eucalyptus plantations and six- to seven-year-old pines were similar. More birds were observed, and bird detections varied less in eucalyptus plantations. Indigo buntings (Passerina cyanea) and other shrub-associated species were detected more often in eucalyptus stands. In contrast, species that inhabit herbaceous-dominated communities, such as eastern meadowlarks (Sturnella magna), or that were associated with a dense graminoid community (e.g., Bachman’s sparrow [Peucaea aestivalis]) were detected less often in eucalyptus. Overall, breeding bird communities in eucalyptus plantations one to two years postestablishment differed little from plantations dominated by slash pine.

中文翻译：

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卡姆登白胶和斜线松人工林鸟类繁殖季节多样性和群落组成

在美国南部，一些土地所有者已经建立了桉树（桉树属）种植园，并以短周期（<15 年）的方式对其进行管理，以提供用于纤维和其他潜在用途的木材。以非本地物种为主的短轮作木本作物的建立对美国的常驻动物群有很大的影响，这在很大程度上是未知的。我们比较了西南地区新建立的卡姆登白胶 (Eucalyptus benthamii) 人工林与相同年龄和高度（分别为 1 至 2 岁和 6 至 7 岁）的斜线松 (Pinus elliottii) 人工林中的鸟类丰度、多样性和群落组成美国路易斯安那州。新建立的桉树人工林和六至七年生松树的物种丰富度、多样性和群落组成相似。观察到更多的鸟，桉树种植园的鸟类检测差异较小。在桉树林中更经常发现靛蓝鹀（Passerina cyanea）和其他与灌木相关的物种。相比之下，栖息在草本植物为主的群落中的物种，例如东部草地鹨 (Sturnella magna)，或与密集的禾本科群落相关的物种（例如，巴赫曼麻雀 [Peucaea aestivalis]）在桉树中的检测频率较低。总体而言，桉树种植园在建立后一到两年的繁殖鸟类群落与以斜线松为主的种植园几乎没有区别。例如东部草地鹨 (Sturnella magna)，或与密集的禾本科群落有关（例如，巴赫曼麻雀 [Peucaea aestivalis]）在桉树中的检测率较低。总体而言，桉树种植园在建立后一到两年的繁殖鸟类群落与以斜线松为主的种植园几乎没有区别。例如东部草地鹨 (Sturnella magna)，或与密集的禾本科群落有关（例如，巴赫曼麻雀 [Peucaea aestivalis]）在桉树中的检测率较低。总体而言，桉树种植园在建立后一到两年的繁殖鸟类群落与以斜线松为主的种植园几乎没有区别。