• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Ecological research >Artificial nest predation rates vary among habitats in the Australian monsoon tropics
【24h】

Artificial nest predation rates vary among habitats in the Australian monsoon tropics

机译：在澳大利亚季风热带地区，不同栖息地的人工巢捕食率各不相同

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

Rates of nest predation have frequently been shown to differ between fragmented and unfragmented habitats, but have rarely been compared among natural habitats in the same geographic region. In this study, artificial nests of two types (open cup and domed) were placed in four habitats (mangroves, monsoon rainforests, eucalypt woodlands and paperbark swamps) over 12 months in three localities near Darwin in the Australian monsoon tropics to determine the effects of habitat, season and nest type on the rate of nest predation. A quail egg and a similarly coloured plasticine egg were placed in each nest. Habitat had a strong effect on nest predation rates, with nests in mangroves experiencing predation rates more than four times higher than those in eucalypt woodlands and paperbark swamps. Despite the strong rainfall seasonality of the region, there was no consistent seasonal variation in nest predation rates. Nest type also had little influence on predation rates, except in paperbark swamps where open cup nests suffered a higher predation rate than domed nests. The study indicates that generalised nest predation rates for tropical regions, even for small areas (e.g. < 17 km radius), might overlook substantial variation between habitats. Such variation confounds purported differences in nest predation rates between tropical and temperate regions.
机译：破碎和不破碎生境的巢穴捕食率经常被证明是不同的，但是在同一地理区域的自然生境中很少进行比较。在这项研究中，在澳大利亚季风热带地区达尔文附近的三个地区，历时12个月，将两种类型的人工巢（开放杯和半球形）放置在四个栖息地（红树林，季风雨林，桉树林地和纸皮沼泽）中，历时12个月。栖息地，季节和巢类型对巢捕食率的影响。将鹌鹑蛋和颜色相似的橡皮泥蛋放在每个巢中。栖息地对巢穴的捕食率有很大影响，红树林中巢穴的捕食率比桉树林地和纸树皮沼泽高出四倍。尽管该地区降雨季节强烈，但巢中捕食率并没有一致的季节性变化。巢的类型对捕食率的影响也很小，除了在纸皮沼泽中，开放杯状巢比圆顶巢的捕食率高。该研究表明，热带地区，甚至是小区域（例如半径小于17公里）的广义巢穴捕食率可能忽略了生境之间的实质性变化。据称这种变化使热带和温带地区的巢穴捕食率不同。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
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