...
首页> 外文期刊>Ecology letters >Individual and population level determinants of immigration success on local habitat patches: an experimental approach
【24h】

Individual and population level determinants of immigration success on local habitat patches: an experimental approach

机译:在本地栖息地斑块上成功移民的个人和人口决定因素:一种实验方法

获取原文
获取原文并翻译 | 示例
   

获取外文期刊封面封底 >>

       

摘要

The effect of population density on immigration success of young root voles was studied in a factorial experiment where immigrants of three different types were translocated from donor populations to recipient habitat patches with experimentally manipulated population sizes. The different types of immigrants were: (1) residents, animals that had remained in their natal patch; (2) colonists, animals that already had successfully dispersed and settled in a new patch; and (3) transients, animals roaming around in a non-habitable matrix area of the donor population. Generally, we found evidence for a negative density-dependent immigration success in terms of survival, rate of sexual maturation and body growth rate. With respect to the survival rate, the degree of density dependence differed among the three immigrant types. Our findings are discussed with respect to the degree of rescue effect immigrants may have on a recipient population depending on population density, and also its relevance concerning translocation of individuals for conserving endangered populations.
机译:在一项析因实验中研究了人口密度对幼根田鼠迁移成功的影响,该实验将三种不同类型的移民从供体种群转移到受实验操纵的种群规模的受体生境斑块。不同类型的移民是:(1)居民,仍是其出生地的动物; (2)殖民者,已经成功分散并定居在新斑块中的动物; (3)短暂的时间,动物在供体种群的不可居住矩阵区域中漫游。通常,我们发现在存活率,性成熟率和身体生长率方面,密度依赖性移民成功的证据是负面的。关于成活率,三种移民类型之间的密度依赖性程度不同。我们讨论了有关移民可能对受援者群体产生的营救效果程度的调查结果,具体取决于人口密度,还涉及其与个人易位保护濒危人群的相关性。

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