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The role of ecological and environmental conditions on the nesting success of waders in sub-Arctic Sweden

机译：生态环境条件对亚克瑞典洼地筑巢成功的作用

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摘要

Waders that breed in the sub-Arctic are one of the groups most threatened by climate change. At the same time, wader breeding success also can vary as a function of fluctuations in the numbers of predators and rodents (an alternative prey for the predators). How climate change could influence these foodweb interactions remains poorly studied. In this study, we analysed the effects of ecological (e.g. vole/lemming and predator abundance) and environmental factors (e.g. snow cover) on the breeding success of waders in sub-Arctic Lapland. We monitored more than 500 wader nests during six breeding seasons, which spanned a full rodent cycle and one year of exceptionally late snow melt. Nest predation rate, and thus wader breeding success, did not vary as a function of predator or rodent abundance. However, predation rate was exceptionally high in the year with a late snow melt. More variability in climate is expected for the future, where more precipitation and cold spring temperatures resulting in late snow melt will be more frequent, influencing the rodent and predator numbers, and therefore wader breeding success in the sub-Arctic. Snow would limit the number of open areas for nesting and hence predators would then be able to find these nests more easily. Additionally, predators might concentrate their efforts on alternative prey if snow has reduced their capacity to find other food sources. And, ultimately, changes in the rodent fluctuations could affect the final outcome of predators.
机译：在亚北极洲繁殖的伴侣是受气候变化最威胁的团体之一。与此同时，Wader繁殖成功也可以随着捕食者和啮齿动物的数量波动的函数而变化（捕食者的替代猎物）。气候变化如何影响这些食品互动仍然很差。在这项研究中，我们分析了生态（例如VOLE / LEMMING和PREDATION BURIMENCE）和环境因素（例如雪覆盖）对次北极LAPLAND中伴随的育种成功的影响。我们在六个繁殖季节监测了500多个Wader巢穴，这些季节跨越了一个完整的啮齿动物周期和一年的雪融化。巢捕食率，从而促进育种成功，并不随着捕食者或啮齿动物丰富的函数而变化。然而，捕食率在雪融化后的一年中非常高。预计将来有更多的气候变异，导致晚雪熔体的沉淀和冷泉温度会更频繁，影响啮齿动物和捕食者数，因此涉及亚北极地区的滋生成功。雪将限制嵌套的开放区域的数量，因此捕食者将能够更容易地找到这些巢穴。此外，如果雪降低了其寻找其他食物来源的能力，捕食者可能会集中精力努力。而且，最终，啮齿动物波动的变化可能会影响捕食者的最终结果。

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  • 来源
    《Polar biology》 |2019年第8期|1571-1579|共9页
  • 作者

    Machin Paula; Fernandez-Elipe Juan; Hungar Johannes; Angerbjoern Anders; Klaassen Raymond H. G.; Aguirre Jose I;

  • 作者单位

    Univ Groningen Conservat Ecol Grp Groningen Inst Evolutionary Life Sci GELIFES POB 11103 NL-9700 CC Groningen Netherlands|Univ Complutense Madrid Dept Biodivers Ecol & Evolut Fac Biol Ciudad Univ E-28040 Madrid Spain;

    Stockholm Univ Dept Zool S-10691 Stockholm Sweden;

    Univ Groningen Conservat Ecol Grp Groningen Inst Evolutionary Life Sci GELIFES POB 11103 NL-9700 CC Groningen Netherlands|Dutch Montagus Harrier Fdn POBox 46 NL-9679 ZG Scheemda Netherlands;

    Univ Complutense Madrid Dept Biodivers Ecol & Evolut Fac Biol Ciudad Univ E-28040 Madrid Spain;

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

    Snow; Predation; Survival; Breeding; Year differences;

    机译：雪;捕食;生存;育种;年差异;

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