...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Marine ecology progress series >Linking climate variability, productivity and stress to demography in a long-lived seabird
【24h】

Linking climate variability, productivity and stress to demography in a long-lived seabird

机译：将气候变化性，生产力和压力与长寿海鸟的人口统计学联系起来

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

We examined the reproductive ecology of black-legged kittiwakes Rissa tridactyla in several breeding colonies in the North Pacific to test if inter-annual changes in the Pacific Decadal Oscillation (PDO), Winter Ice Cover (ICI), or local sea-surface temperature (SST) predict changes in productivity (fledglings per nest) or nutritional stress (corticosterone). We explored the implications of the observed variation in productivity and stress for projected population dynamics based on a previously demonstrated corticosterone-survival relationship. Although productivity was highly variable (0 to 0.9 fledglings nest"1), the relationships between productivity and environmental indices were weak, with local SST providing slightly more explanatory power than PDO or ICI, suggesting that local factors rather than large-scale climate variability may determine variation in productivity. The relationships between stress and environmental indices were stronger than the relationship between productivity and environment. The measured response of stress to environment showed opposite signs between the southern and northern colonies, and typically implied annual mortality rates varying from 11 to 17%. The observed relationships between climate and stress indicate that anticipated warming might bring at least short-term demographic benefits for kittiwakes in the Bering shelf region, while having negative impacts on birds breeding in the Gulf of Alaska and western Aleutians. We predict decline (without immigration) for colonies with the lowest productivity and conclude that climate variability is likely to affect survival of North Pacific kittiwakes on a region-specific basis. Longevity of these birds may not always be sufficient to buffer their populations from low reproductive performance.
机译：我们在北太平洋的几个繁殖种群中检查了黑脚Kittiwakes Rissa tridactyla的生殖生态，以测试太平洋年代际振荡（PDO），冬季冰盖（ICI）或当地海表温度（ SST）可预测生产力（每个巢中的雏鸟）或营养压力（皮质酮）的变化。我们基于先前证明的皮质酮与生存的关系，探讨了观察到的生产力和压力变化对预计的人口动态的影响。尽管生产力变化很大（0到0.9个雏鸟巢“ 1”），但是生产力和环境指数之间的关系很弱，当地的SST比PDO或ICI的解释力略强，这表明当地因素而不是大规模的气候变化可能决定生产力的变化。压力与环境指数之间的关系比生产力与环境之间的关系更强。测得的压力对环境的反应在南部和北部殖民地之间显示出相反的迹象，通常隐含的年死亡率在11至17之间变化％。观测到的气候与压力之间的关系表明，预期的变暖可能至少会给白令陆架地区的Kittiwakes带来短期的人口统计学优势，同时对阿拉斯加湾和阿留申群岛西部的鸟类繁殖产生负面影响。没有移民）适用于p最低的殖民地得出的结论是，气候变化可能会在特定地区基础上影响北太平洋Kittawakes的生存。这些鸟类的寿命可能并不总是足以缓解其种群的低繁殖力。

著录项

  • 来源
    《Marine ecology progress series》 |2012年第21期|p.221-235|共15页
  • 作者

    William H. Satterthwaite; Alexander S. Kitaysky; Marc Mangel;

  • 作者单位

    Marine Resources Assessment Group (MRAG) Americas, Capitola, California 95010, USA,Center for Stock Assessment Research, Department of Applied Mathematics and Statistics, University of California Santa Cruz, Santa Cruz, California 95064, USA;

    Institute of Arctic Biology, Department of Biology and Wildlife, University of Alaska Fairbanks, Fairbanks, Alaska 99775, USA;

    Center for Stock Assessment Research, Department of Applied Mathematics and Statistics, University of California Santa Cruz, Santa Cruz, California 95064, USA,Department of Biology, University of Bergen, Bergen 5020, Norway;

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

    demographic consequence; corticosterone; kittiwake; survival; food availability; colony;

    机译：人口后果;皮质酮kittiwake;生存食物供应;殖民地;

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