GRASSLAND SONGBIRD ABUNDANCE ALONG ROADS AND TRAILS IN SOUTHERN SASKATCHEWAN
GRASSLAND SONGBIRD ABUNDANCE ALONG ROADS AND TRAILS IN SOUTHERN SASKATCHEWAN
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萨斯喀彻温省南部道路和小径上的草原鸣鸟数量众多
DOI：
10.1648/0273-8570-71.1.110
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发表时间：
2000
期刊：
影响因子：
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通讯作者：
D. C. Duncan
中科院分区：
文献类型：
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作者：
G. Sutter;S. K. Davis;D. C. Duncan
摘要我们进行了路边和小道边点计数调查，以确定是否草地鸟类丰度不同沿着开沟和非开沟采样点在萨斯喀彻温省西南部。沿着的萨凡纳和晚祷麻雀数量更多，而贝尔德麻雀、栗领长距麻雀和斯普拉格皮皮鸟沿着小径数量更多。粘土色的麻雀，角云雀，和西部草地云雀被发现同样沿着道路和小径。沿着的斯普拉格氏管蚜丰度较低，可能是由于在100米半径的点计数内，与道路路权相关的适宜栖息地减少了20-30%。贝尔德的麻雀和栗领长距（42和56%，丰富的沿着道路，分别）较大的差异表明，这些物种往往不会建立领土毗邻路边沟渠。我们的研究结果表明，路边的研究，旨在估计丰富的草原鸣禽应包括trailside计数或解释路边数据的基础上的物种路边栖息地的亲和力。
Abstract We conducted roadside and trail-side point count surveys to determine whether grassland bird abundance differs along ditched and non-ditched sampling points in southwestern Saskatchewan. Savannah and Vesper Sparrows were more abundant along roads, while Baird's Sparrows, Chestnut-collared Longspurs, and Sprague's Pipits were more abundant along trails. Clay-colored Sparrows, Horned Larks, and Western Meadowlarks were detected equally along roads and trails. The lower abundance of Sprague's Pipits along roads may be attributed to the 20–30% reduction of suitable habitat associated with the road right-of-way within a point count of 100-m radius. Larger differences for Baird's Sparrows and Chestnut-collared Longspurs (42 and 56% less abundant along roads, respectively) suggest that these species tend not to establish territories adjacent to roadside ditches. Our results indicate that roadside studies designed to estimate the abundance of grassland songbirds should either include trailside counts or interpret roadside data based on the affinity of a species for roadside habitat.
Amano,K.：“关于多重连通域的数值共形映射”信息。
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