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首页> 外文期刊>Marine ecology progress series >Elephant seal foraging dives do indeed track prey distribution, but temperature influences the distribution of prey: Reply to Boersch-Supan et al. (2012)
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Elephant seal foraging dives do indeed track prey distribution, but temperature influences the distribution of prey: Reply to Boersch-Supan et al. (2012)

机译:海象觅食潜水确实可以追踪猎物的分布,但是温度会影响猎物的分布:回复Boersch-Supan等人。 (2012年)

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摘要

Mclntyre et al. (2011a; Mar Ecol Prog Ser 441:257-272) illustrated a number of relationships between environmental variables and the dive behaviour of satellite-tracked southern elephant seals Mirounga leonina. One of these associations was that seals tended to increase their dive depths and spend less time at targeted dive depths when swimming in warmer waters. Boersch-Supan et al.'s (2012; Mar Ecol Prog Ser 461:293-298) comment on this study suggests that the link described between dive depths and in situ temperature is actually a link between dive depths and prey distribution. We do not dispute this assertion, having discussed this likelihood in Mclntyre et al. (2011a). Boersch-Supan et al. (2012) further provide a number of criticisms, based partly on their observations of potential prey distributions within a comparatively small geographic area. We argue that their results are not directly comparable to those presented in Mclntyre et al. (2011a) given the limited spatial overlap of the study areas and sparse, small-scale dataset presented. We further provide replies to technical comments by Boersch-Supan et al. (2012) pertaining to our data analyses.
机译:Mclntyre等。 (2011a; Mar Ecol Prog Ser 441:257-272)说明了环境变量与卫星追踪的南部象海豹Mirounga leonina的潜水行为之间的许多关系。这些关联之一是海豹在温暖的海水中游泳时往往会增加其潜水深度,并减少在目标潜水深度上花费的时间。 Boersch-Supan等人(2012; Mar Ecol Prog Ser 461:293-298)对这项研究的评论表明,潜水深度和原位温度之间描述的联系实际上是潜水深度与猎物分布之间的联系。我们已经在Mclntyre等人讨论了这种可能性,对此并不怀疑。 (2011a)。 Boersch-Supan等。 (2012)进一步提出了许多批评,部分是基于他们对一个相对较小的地理区域内潜在猎物分布的观察。我们认为,他们的结果不能直接与Mclntyre等人提出的结果进行比较。 (2011a)考虑到研究区域的空间重叠有限,并且提出了稀疏的小规模数据集。我们进一步提供对Boersch-Supan等人技术评论的回复。 (2012)关于我们的数据分析。

著录项

  • 来源
    《Marine ecology progress series》 |2012年第8期|p.299-303|共5页
  • 作者单位

    Mammal Research Institute, Department of Zoology and Entomology, University of Pretoria, Private Bag X20, Hatfield 0028,South Africa;

    Department of Oceanography, Marine Research Institute, University of Cape Town, Rondebosch 7701, South Africa;

    Alfred Wegener Institute for Polar and Marine Research, Postfach 120161, 27515 Bremerhaven, Germany;

    Alfred Wegener Institute for Polar and Marine Research, Postfach 120161, 27515 Bremerhaven, Germany;

    Mammal Research Institute, Department of Zoology and Entomology, University of Pretoria, Private Bag X20, Hatfield 0028,South Africa;

    Mammal Research Institute, Department of Zoology and Entomology, University of Pretoria, Private Bag X20, Hatfield 0028,South Africa;

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

    southern elephant seals; foraging ecology; climate change; marion island; bio-logging;

    机译:南部象海豹;觅食生态;气候变化;马里恩岛生物测井;

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