Land units composition of home ranges and changing of winter roosts of long-eared owl Asio otus
Land units composition of home ranges and changing of winter roosts of long-eared owl Asio otus
复制标题
长耳鸮Asio otus活动范围的土地单位组成及冬季栖息地的变化
DOI：
10.1515/eko-2015-0015
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
M. Hudec
中科院分区：
文献类型：
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作者：
Filip Tulis;I. Jakab;Roman Slobodník;M. Hudec
摘要2010-2012年间，我们利用无线电遥测技术对长耳猫头鹰在农田中的空间活动进行了观测。100%和95%最小凸多面体的跟踪长耳猫头鹰的平均活动范围大小分别为415.93和350ha。在繁殖季节和非繁殖季节，我们没有记录到家牧场大小的显著差异。开阔的土地单元(草地和耕地)是跟踪猫头鹰栖息地中最丰富的土地单元(100%和95%的平均MCP分别为24.6%和24.3%)。林缘以其交错带的特征也代表了丰富的土地单元(100%和95%MCP的平均值分别为11.4%和10.6%)。居住区的数量(100和95%MCP的平均值分别为8.2%和10.1%)与它们的大小呈正相关(Spearman等级相关：100%MCP：RS=0.83，p&t；0.05；95%MCP：RS=0.91，p<；0.05)，这表明长耳猫头鹰正在避开作为食物获取区域的建成区。两只长耳猫头鹰在一个非繁殖季节更换了冬季栖息地，它们之间的距离为650m。
Abstract During the years 2010-2012, we observed the spatial activity of long-eared owls by the radio telemetry in an agricultural land. The average home range size of tracked long-eared owls for 100 and 95% minimum convex polygon (MCP) was 415.93 and 350 ha, respectively. Between the breeding and the non-breeding season, we did not record significant differences in the size of home ranges. Open land units (meadows and arable lands) belonged to the most abundant land units in the home ranges of tracked owls (mean for 100 and 95% MCP was 24.6 and 24.3%, respectively). Forest edges with their ecotone character also represented the abundant land unit (mean for 100 and 95% MCP was 11.4 and 10.6%, respectively). An amount of built-inhabited areas in home ranges (mean for 100 and 95% MCP was 8.2 and 10.1%, respectively) correlated positively with their size (Spearman rank correlation: for 100% MCP: rs = 0.83, p <0.05; for 95% MCP: rs = 0.91, p <0.05) that indicates long-eared owls to be avoiding built-inhabited areas as an area of the food getting. Two individuals of long-eared owl changed the winter roosts during one non-breeding season, which were at a distance of 650 m from each other.