...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Estuarine Coastal and Shelf Science >Foraging movements of Audouin's gull (Larus audouinii) in the Ebro Delta, NW Mediterranean: A preliminary satellite-tracking study
【24h】

Foraging movements of Audouin's gull (Larus audouinii) in the Ebro Delta, NW Mediterranean: A preliminary satellite-tracking study

机译：地中海西北部埃布罗三角洲觅食海鸥（Larus audouinii）的运动：初步的卫星跟踪研究

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

A knowledge of the foraging strategies of marine predators is essential to understand the intrinsic factors controlling their distribution, abundance and their ecological function within the marine ecosystem. Here, we investigated for the first time the foraging movements and activity patterns of Audouin's gull Larus audouinii by using satellite-tracking data from eight breeding adults in the main colony of the species worldwide (Ebro Delta, NW Mediterranean). Tagged gulls foraged in the marine area close to the breeding colony (62% of foraging locations) and in the terrestrial area of the Ebro Delta (mainly rice fields; 38% of foraging locations). The foraging activity patterns changed significantly throughout the day; lower from dusk through the first half of the night (19-1 h; 32% of active locations) and higher during the rest of the day (1-19 h; 75.5 ± 4.3% of active locations). These results confirm the foraging plasticity of this seabird and, based on previous information about the dietary habits of this species, we hypothesize how its time-dependent activity patterns and habitat use could be associated with variations in the availability of marine food resources (e.g. diel vertical migrations of pelagic fish) and the exploitation of terrestrial resources (e.g. American crayfish Procambarus clarkii).
机译：了解海洋捕食者的觅食策略对于了解控制其在海洋生态系统中的分布，丰度及其生态功能的内在因素至关重要。在这里，我们首次使用来自全球主要种群（埃布罗三角洲，地中海西北部）的八只成年繁殖者的卫星追踪数据，调查了奥杜因海鸥Larus audouinii的觅食运动和活动方式。标记的海鸥在繁殖地附近的海洋区域（占觅食位置的62％）和埃布罗三角洲的陆地区域（主要是稻田；占觅食位置的38％）觅食。觅食活动模式全天变化很大；从黄昏到上半夜较低（19-1小时；活跃地点的32％），在一天的其余部分中较高（1-19小时；活跃地点的75.5±4.3％）。这些结果证实了该海鸟的觅食可塑性，并且根据有关该物种饮食习惯的先前信息，我们假设其随时间变化的活动模式和栖息地的使用可能与海洋食物资源的可用性变化有关（例如，远洋鱼类的垂直迁移）和陆地资源的开发（例如美国小龙虾Procambarus clarkii）。

著录项

  • 来源
    《Estuarine Coastal and Shelf Science》 |2012年第1期|p.257-261|共5页
  • 作者

    Isadora Christel; Joan Navarro; Marcos del Castillo; Albert Cama; Xavier Ferrer;

  • 作者单位

    Departament de Biologia Animal, Facultat de Biologia, Universitat de Barcelona, Diagonal 645, 08028 Barcelona, Spain,Museo Nacional de Ciencias Naturales, Consejo Superior de Investigaciones Cientificas (CSIC), C/Jose Gutierrez Abascal 2, 28006 Madrid, Spain;

    Institut de Ciencies del Mar (ICM-CSIC), P. Maritim de la Barceloneta 37-49, 08002 Barcelona, Spain;

    C/Vilanova 8A, 07002 Palma de Mallorca, Mallorca, llles Balears, Spain;

    Departament de Biologia Animal, Facultat de Biologia, Universitat de Barcelona, Diagonal 645, 08028 Barcelona, Spain,Museo Nacional de Ciencias Naturales, Consejo Superior de Investigaciones Cientificas (CSIC), C/Jose Gutierrez Abascal 2, 28006 Madrid, Spain;

    Departament de Biologia Animal, Facultat de Biologia, Universitat de Barcelona, Diagonal 645, 08028 Barcelona, Spain;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    ebro delta; foraging activity; foraging distribution; habitat use; marine birds; marine habitat; mediterranean sea; rice fields;

    机译：埃布罗三角洲觅食活动;觅食分布栖息地利用;海洋鸟类;海洋栖息地;地中海稻田;

相似文献

  • 外文文献
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