Effects of clearcutting on habitat use and reproductive success of the ovenbird in forested landscapes
Effects of clearcutting on habitat use and reproductive success of the ovenbird in forested landscapes
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DOI：
10.1046/j.1523-1739.1996.10051380.x
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发表时间：
1996-10-01
影响因子：
6.3
通讯作者：
Degraaf, RM
中科院分区：
文献类型：
--
作者：
King, DI;Griffin, CR;Degraaf, RM
我们在 1992 年和 1993 年期间对新罕布什尔州北部的烤箱鸟（Seiurus aurocapillus）进行了研究，以确定在以森林为主的景观中是否存在与破碎景观中报告的栖息地利用和繁殖成功率相关的边缘变化。六个研究地块位于四个最近的砍伐区（2.1-5 公顷）附近，并向森林内部延伸 400 m。巢穴、领地和获得交配的领地雄性均匀分布在边缘（0-200 m）和内部（201-400 m）区域。 1992 年以及 1992 年和 1993 年的总和，森林内部的巢穴存活率较高。一年中，边缘和内部的羽翼大于或等于 1 只雏鸟的成对比例、羽翼重量和羽翼弦比例没有差异。每对幼鸟的数量在边缘区域略低，但这些差异并不显着。我们得出的结论是，砍伐大面积森林景观会影响炉鸟的繁殖成功率。然而，该地区成熟的森林覆盖丰富以及烤箱鸟在最初筑巢失败后重新筑巢的趋势减轻了对烤箱鸟种群的影响。
We studied Ovenbirds (Seiurus aurocapillus) in northern New Hampshire during 1992 and 1993 to determine whether edge-related changes in habitat use and reproductive success reported in fragmented landscapes exist in predominantly forested landscapes. Six study plots were placed adjacent to four recent clearcuts (2.1-5 ha) and extended 400 m into the forest interior. Nests, territories, and territorial males obtaining mates were equally distributed in edge (0-200 m) and interior (201-400 m) areas. Nest survival was higher in the forest interior in 1992 and for 1992 and 1993 combined. The proportion of pairs fledging greater than or equal to 1 young, fledgling weight, and fledgling wing-chord did not differ between edge and interior in either year. Number of young fledged per pair was slightly lower in edge areas, but these differences were not significant. We conclude that clearcutting in extensively forested landscapes can affect Ovenbird reproductive success. Nevertheless, the effect on Ovenbird populations is moderated by the abundance of mature forest cover in the region and by the tendency of Ovenbirds to renest after initial nest failure.