...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>The Wilson Bulletin >SPATIAL AND HABITAT RELATIONSHIPS OF RED-EYED AND BLUE-HEADED VIREOS IN THE SOUTHERN APPALACHIANS
【24h】

SPATIAL AND HABITAT RELATIONSHIPS OF RED-EYED AND BLUE-HEADED VIREOS IN THE SOUTHERN APPALACHIANS

机译：南部阿巴拉契亚人的红眼和蓝头鸢的空间和栖息地关系

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Red-eyed (Vireo olivaceus) and Blue-headed (V. solitarius) vireos have similar foraging ecol ogies, similar songs, and occupy similar forest habitats. Evidence suggests, however, that the typical pattern of habitat and foraging segregation in sympatric vireos may not be observed in the southern part of their range of sympatry. We tested the degree of ecological overlap in the southern Appalachians of Virginia by asking whether these species segregate via interspecific territoriality or habitat use. We quantified response to heterospecific song, territory overlap, and habitat characteristics during the breeding seasons of 1997 and 1998. Red-eyed and Blue-headed vireos responded at low frequencies (9% and 2%, respectively; years combined) to the songs of the other species. Not surprisingly, given the playback results, approximately 54% of territories examined for each species overlapped with a territory of the other species. Within territories, both vireos used structurally similar habitat. Microhabitat composition, however, differed between species. Blue-headed Vireos occurred in areas with greater abundance of white oaks (Quercus spp.), conifers, and snags, whereas Red-eyed Vireo habitat had qualitatively greater abundance of red oaks and red maples (Acer rubrum). Red-eyed and Blue-headed vireo habitat was discriminated further by the presence of striped maple (A. pensylvanicum) and black locust (Robinia pseudoacacia) in the canopy of Red-eyed Vireo habitat, whereas conifers and black birch (Betula lenta) were more common at sites where Blue-headed Vireos were observed. Shrub species composition did not differ significantly between vireo habitats. Red-eyed and Blue-headed vireos showed only subtle habitat segregation at our study site in the southern Appalachians, and we found little evidence of interspecific aggression.
机译：红眼（Vireo olivaceus）和蓝头（V. solitarius）的维罗虫具有相似的觅食生态，相似的歌曲，并占据相似的森林栖息地。但是，有证据表明，在同伴动物的共生体范围的南部可能未观察到典型的栖息地和觅食隔离模式。我们通过询问这些物种是否通过种间疆界或栖息地隔离来测试弗吉尼亚南部阿巴拉契亚山脉的生态重叠程度。在1997和1998年的繁殖季节，我们量化了对异种歌曲，地域重叠和栖息地特征的响应。红眼和蓝头vireos对低频歌曲的响应频率较低（分别为9％和2％；多年）。其他物种。毫不奇怪，鉴于回放结果，每个物种检查的大约54％的领土与其他物种的领土重叠。在领土内，两种维雷奥犬都使用结构相似的栖息地。但是，不同物种的微生境组成不同。蓝头狐猴发生在白橡树（栎属物种），针叶树和障碍物较多的地区，而红眼狐狸栖息地在质量上有较多的红橡树和红枫树（枫树红枫）。红眼和维尔纽斯栖息地的冠层存在条纹枫叶（A. pensylvanicum）和黑刺槐（Robinia pseudoacacia），从而进一步区分了红眼和蓝头的维罗栖息地，而针叶树和黑桦（Betula lenta）是在观察到蓝头狐猴的地方更为常见。在不同的生境之间，灌木的种类组成没有显着差异。在我们位于阿巴拉契亚南部的研究地点，红眼和蓝头狐猴仅表现出微妙的栖息地隔离，我们几乎没有发现种间侵略的证据。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号