• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Southeastern naturalist >Cliff Swallow Breeding Range Expansion along the Great Pee Dee River Corridor in the Carolinas
【24h】

Cliff Swallow Breeding Range Expansion along the Great Pee Dee River Corridor in the Carolinas

机译：沿着卡罗来纳州大迪迪河走廊的悬崖燕子繁殖范围扩展

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

Petrochelidon pyrrhonota (Cliff Swallow) initially expanded its breeding range to the Great Pee Dee River corridor of the Carolinas in the early 1980s. In 2012, I documented approximately 1700 active nests of the Cliff Swallow at 20 colony sites in the Lower Piedmont of North Carolina and Coastal Plain of South Carolina along this river corridor. Cliff Swallows nested primarily at bridges and other water-based sites but also bred at several land-based sites, including the first colony documented at a highway overpass in the Carolinas. Compared to colony sizes in the early 1980s and mid-1990s at 3 major sites in North Carolina, numbers in 2012 were approximately 1500% and 400% higher, respectively. Before this study, Cliff Swallows nesting along the Great Pee Dee River was documented only as far as Cheraw, at the Fall Line. This study demonstrates that breeding now occurs 145 km farther south along this corridor at 6 sites, including 2 sites in the tidewater region of South Carolina. Several bridges along this corridor with favorable structural characteristics for breeding are still unoccupied. The breeding range expansion front of interior populations along and near the Great Pee Dee River has moved slowly (≈3.25 km/yr), in an apparently stepwise manner. However, the gap between expanding interior and coastal populations is confounding the pattern of range expansion in the Lower Coastal Plain of South Carolina.
机译：Petrochelidon pyrrhonota（Cliff Swallow）最初在1980年代初将其繁殖范围扩展到Carolinas州的大佩迪河走廊。在2012年，我记录了沿这条河走廊在北卡罗莱纳州下山麓和南卡罗来纳州沿海平原的20个殖民地站点上约1700座燕子活动巢。崖燕主要筑巢于桥梁和其他水基场所，但也繁殖于数个陆基场所，包括卡罗来纳州高速公路立交桥上记录的第一个殖民地。与1980年代初和1990年代中期北卡罗来纳州3个主要地点的种群规模相比，2012年的种群数量分别高出1500％和400％。在进行这项研究之前，有文献记载在大佩迪河沿岸筑巢的燕子只到秋天线的切罗。这项研究表明，现在沿着该走廊向南145公里处有6个地点（包括南卡罗来纳州的潮水地区的2个地点）发生了繁殖。沿该走廊的几座具有良好育种结构特征的桥梁仍未有人使用。大Pee Dee河沿岸及附近的内部种群的繁殖范围扩展前沿以明显的逐步方式缓慢移动（≈3.25km / yr）。但是，内陆和沿海人口的增长之间的差距使南卡罗来纳州下沿海平原的范围扩大模式感到困惑。

著录项

相似文献

  • 外文文献
  • 中文文献
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