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首页> 外文期刊>Polar biology >Variability of polar scurvygrass Cochlearia groenlandica individual traits along a seabird influenced gradient across Spitsbergen tundra
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Variability of polar scurvygrass Cochlearia groenlandica individual traits along a seabird influenced gradient across Spitsbergen tundra

机译：沿着海鸟的极地坏血草Cochlearia groenlandica个体性状的变异影响跨斯匹次卑尔根苔原的梯度

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摘要

In the resource-limited Arctic environment, vegetation developing near seabird colonies is exceptionally luxuriant. Nevertheless, there are very few detailed quantitative studies of any specific plant species responses to ornithogenic manuring. Therefore, we studied variability of polar scurvygrass Cochlearia groenlandica individual biomass and leaf width along a seabird influenced gradient determining environmental conditions for vegetation in south-west Spitsbergen. We found seabird colony effect being a paramount factor responsible for augmented growth of C. groenlandica. The species predominated close to the colony and reached the highest mean values of individual biomass (1.4 g) and leaf width (26.6 mm) 10 m below the colony. Its abundance and size declined towards the coast. Both C. groenlandica individual traits significantly decreased with distance from the colony, soil water and organic matter content and increased with guano deposition, soil δ~(15)N, conductivity, acidity and nitrate, phosphate and potassium ion content. Our study supports the hypothesis that seabirds have fundamental importance for vegetation growth in poor Arctic environment. Highly plastic species such as C. groenlandica may be a useful instrument in detecting habitat condition changes, for instance resulting from climate change.
机译：在资源有限的北极环境中，在海鸟殖民地附近生长的植被异常繁茂。然而，很少有关于任何特定植物物种对鸟生肥料的反应的详细定量研究。因此，我们研究了西南斯匹次卑尔根州极地坏血草Cochlearia groenlandica个体生物量和叶宽沿海鸟的梯度变化对环境条件的影响。我们发现海鸟的集落效应是导致罗汉果生长增长的最重要因素。该物种在殖民地附近占主导地位，在殖民地以下10 m处达到了单个生物量（1.4 g）和叶宽（26.6 mm）的最高平均值。它的丰度和大小向海岸下降。罗汉果的两个个体性状均随着与群体距离，土壤水分和有机质含量的增加而显着降低，并随着鸟粪沉积，土壤δ〜（15）N，电导率，酸度以及硝酸盐，磷酸盐和钾离子含量的增加而增加。我们的研究支持以下假设：海鸟对于恶劣的北极环境中的植被生长具有根本重要性。高度可塑性的物种，例如罗汉果念珠菌可能是检测栖息地条件变化（例如由气候变化引起的变化）的有用工具。

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  • 来源
    《Polar biology》 |2013年第11期|1659-1669|共11页
  • 作者

    Katarzyna Zmudczynska-Skarbek; Mateusz Barcikowski; Adrian Zwolicki; Lech Iliszko; Lech Stempniewicz;

  • 作者单位

    Department of Vertebrate Ecology and Zoology, University of Gdansk, Wita Stwosza 59, 80-308 Gdansk, Poland;

    Department of Vertebrate Ecology and Zoology, University of Gdansk, Wita Stwosza 59, 80-308 Gdansk, Poland;

    Department of Vertebrate Ecology and Zoology, University of Gdansk, Wita Stwosza 59, 80-308 Gdansk, Poland;

    Department of Vertebrate Ecology and Zoology, University of Gdansk, Wita Stwosza 59, 80-308 Gdansk, Poland;

    Department of Vertebrate Ecology and Zoology, University of Gdansk, Wita Stwosza 59, 80-308 Gdansk, Poland;

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  • 正文语种 eng
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  • 关键词

    Arctic; Guano; Nutrients; Ornithogenic tundra; Polar scurvygrass;

    机译：北极;鸟粪;营养素;鸟生苔原;极地坏血草;

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