• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>LWT-Food Science & Technology >The plight of a plover: Viability of an important snowy plover population with flexible brood care in Mexico
【24h】

The plight of a plover: Viability of an important snowy plover population with flexible brood care in Mexico

机译：那个地方的困境：在墨西哥的灵活育雏的重要雪党群体的可行性

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

Shorebird populations often rely on wetland habitats, for which they are considered important indicators of ecosystem health. Populations residing at low latitudes remain vastly understudied in comparison with populations from high latitudes. Here we use detailed behavioural and demographic observations during all life stages in combination with stage specific modelling to predict the population trajectory of a snowy plover (Charadrius nivosus) population at Bahia de Ceuta, Sinaloa, Mexico. In North America this shorebird is threatened, with many monitored populations declining. Our stochastic matrix model for the Ceuta population, which closely matched our field observations, suggests that the population is a sink with a 99.8% probability of going extinct within 25 years. Low apparent adult survival, which declined over time presumably because of poor reproductive success and/or permanent emigration in response to habitat degradation, had the largest impact on the population trajectory. We recommend urgent habitat management actions to address volatile water levels and hence increase reproductive success of this species at this important breeding site. Acknowledging the relative effects of flexible brood care on individual fitness and population dynamics presents an intriguing dilemma for conservation. We found that the flexible parental care system of snowy plovers affected chick survival: broods deserted by polyandrous females early after hatching had significantly lower survival than broods not deserted or those deserted late. Overall, deserting females raised fewer fledglings in this population than females that cared. Taken together, our study reveals unsustainable variation in local vital rate dynamics. To understand how this population contributes to regional source-sink dynamics, future research should evaluate the importance of immigration and emigration among neighbouring populations. (C) 2017 Published by Elsevier Ltd.
机译：岸鸟种群经常依靠湿地栖息地，他们被认为是生态系统健康的重要指标。与高纬度的人群相比，居住在低纬度的人群仍然很大程度上。在这里，我们在所有寿命期间使用详细的行为和人口统计观察与阶段特定的建模结合，以预测Bahia de Ceuta，Sinaloa，墨西哥的雪地珩科鸟（Charadrius Nivosus）人口的人口轨迹。在北美，这街道受到威胁，许多受监控的人口下降。我们与现场观察密切匹配的CEUTA人口的随机矩阵模型表明，人口是一个陷入困境，25年内灭绝的概率为99.8％。低明显的成人生存，随着时间的推移，由于栖息地退化的生殖成功和/或永久移民差，对人口轨迹的影响最大。我们建议采取紧急栖息地管理行动来解决挥发性水平，从而提高这个重要的繁殖网站上该物种的生殖成功。承认灵活育雏对个体健康和人口动态的相对效果呈现出保护的困境。我们发现，雪地普通的柔性父母护理系统受到影响的小鸡生存：孵化后早些时候孵化的育雏比没有遗弃的巢穴或荒芜的人在荒凉的植物中显着降低。总的来说，荒凉的女性在这个人口中占据了比照顾的女性的少量漂浮物。我们的研究占据了，揭示了地方生命速率动态的不可持续变化。要了解该人口如何为区域源汇流量有所贡献，未来的研究应评估移民和移民之间的重要性。 （c）2017年由elestvier有限公司出版

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