Comparing areas of suitable habitats along travelled and possible shortest routes in migration of White‐naped Cranes Grus vipio in East Asia
Comparing areas of suitable habitats along travelled and possible shortest routes in migration of White‐naped Cranes Grus vipio in East Asia
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DOI：
10.1111/j.1474-919x.2004.00286.x
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发表时间：
2004-07
期刊：
影响因子：
2.1
通讯作者：
G. Fujita;Guan Hong-liang;M. Ueta;O. Goroshko;V. Krever;K. Ozaki;N. Mita;H. Higuchi
中科院分区：
文献类型：
--
作者：
G. Fujita;Guan Hong-liang;M. Ueta;O. Goroshko;V. Krever;K. Ozaki;N. Mita;H. Higuchi
许多迁徙物种在从繁殖地迁徙到越冬地时会绕道而行，而不是走最短的路线。为了测试是否潜在的合适的栖息地的分布可能是一个因素，导致在迁移过程中使用较少的直接绕道，我们分析了5白枕鹤vipio卫星跟踪从俄罗斯中部-东部的迁移路线，并比较了湿地和草原的总面积沿着迁移路线的鹤与沿着最短的路线鹤的越冬地。所有五只鹤都向东绕行，鹤使用的路线与最短可能路线的距离比为1.13 ± 0.03 sd。根据美国国家海洋和大气管理局的卫星图像，我们证明，湿地和草原的面积沿着迁徙路线所走过的鹤大于沿着最短的可能路线。
Many migratory species take detours when migrating from their breeding to wintering grounds rather than following the shortest route available. To test whether the distribution of potentially suitable habitats might be a factor causing the use of less direct detours during migration, we analysed the migratory routes of five White-naped Cranes Grus vipio satellite-tracked from central-east Russia, and compared the total area of wetlands and grasslands along the migratory routes travelled by the Cranes with that along the shortest possible routes to the Cranes' wintering grounds. All five Cranes made an easterly detour, and the distance ratio of the routes used by Cranes to the shortest possible route was 1.13 ± 0.03 sd. Based on National Oceanic and Atmospheric Administration satellite images, we demonstrate that the area of wetlands and grasslands along the migration routes travelled by Cranes was greater than along the shortest possible routes.