...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Ecological Applications >Man-induced activities modify demographic parameters in a long-lived species: effects of poisoning and health policies
【24h】

Man-induced activities modify demographic parameters in a long-lived species: effects of poisoning and health policies

机译：人为活动改变了长寿物种的人口统计参数：中毒和健康政策的影响

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

Recent changes in sanitary policies within the European Union (EU) concerning disposal of carcasses of domestic animals and the increase of non-natural mortality factors, such as illegal poisoning, are threatening European vultures. However, the effects of anthropogenic activities on demographic parameters are poorly studied. Using a long-term study (1994-2011) of the threatened Pyrenean Bearded Vulture Gypaetus barbatus population, we assess the variation in the proportion of breeding pairs, egg-laying dates, clutch size, breeding success, and survival following a sharp reduction in food availability in 2005 due to the application of restrictive sanitary policies decreasing livestock carcass availability. We found a delay in laying dates and a regressive trend in clutch size, breeding success, and survival following policy change. The maintenance of specific supplementary feeding stations for Bearded Vultures probably reduced the negative effects of illegal poisoning and food shortages, which mainly affected subadult survival. A drop in food availability may have produced changes in demographic parameters and an increase in mortality due to an increased exposure to contaminated food. As a result, supplementary feeding as a precautionary measure can be a useful tool to reduce illegal poisoning and declines in demographic parameters until previous food availability scenarios are achieved. This study shows how anthropogenic activities through human health regulations that affect habitat quality can suddenly modify demographic parameters in long-lived species, including those, such as survival, with high sensitivity to population growth rate.
机译：欧盟内部有关处置家畜尸体的卫生政策的最新变化以及非法中毒等非自然死亡因素的增加，正威胁着欧洲秃鹰。但是，人为活动对人口参数的影响研究很少。通过对濒临绝种的比利牛斯山胡子秃鹰（Gypaetus barbatus）种群进行的长期研究（1994-2011），我们评估了成对成对的比例，产卵日期，离合器大小，育种成功和成活率急剧下降后的变异。由于实施限制性卫生政策，导致2005年的粮食供应减少，牲畜car体供应减少。我们发现，在政策变更后，交期推迟，离合器的大小，育种成功和生存趋势逐渐恶化。维护秃V专用补充饲养站可能会减少非法中毒和食物短缺的负面影响，这主要影响了亚成体的生存。粮食供应的减少可能会导致人口统计学参数的变化，并且由于接触受污染食物的机会增加，死亡率也会增加。结果，作为预防措施的补充喂养可以成为减少非法中毒和人口参数下降的有用工具，直到实现以前的粮食供应情景。这项研究表明，通过人类健康法规影响栖息地质量的人为活动如何突然改变长寿物种的人口统计参数，包括生存率等对人口增长率具有高度敏感性的参数。

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