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首页> 外文期刊>Ecological research >Distribution and habitat use by pine marten Martes martes in a riparian corridor crossing intensively cultivated lowlands
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Distribution and habitat use by pine marten Martes martes in a riparian corridor crossing intensively cultivated lowlands

机译：松貂分布在密集耕种的低地的河岸走廊中的貂

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摘要

The location of pine marten records in northern Italy suggests that main rivers may play the role of natural corridors favouring this species' colonisation of cultivated lowlands. We assessed the distribution and habitat use by the pine marten on a 35 km long stretch of the River Ticino. Surveys were carried out between October 2011 and June 2012 along linear transects in a 2×2 km grid. Using the variation in marking intensity as an indicator of habitat use, habitat selection was assessed at two landscape levels-at transect-scale by the χ~2 test with Bonferroni's confidence intervals for the proportion of use, and at grid-scale by multiple linear regression. By a polymerase chain reaction-restriction fragment length polymorphism method, 91 faecal samples were assigned to the pine marten. Faeces were mainly located in wooded areas, while fields were avoided. At the grid-scale of analysis, marking intensity was positively related to the mean area of wooded patches and negatively to their mean perimeter-area ratio. This suggests that pine marten relative abundance may partially depend on the degree of fragmentation and structure of residual woods. The survey protocol allowed to assess the probability of detection. Occupancy models outlined that heterogeneity in detection probability may arise as a result of variation in marking intensity, i.e. the number of marking individuals. Our results suggest that the availability of both woodland corridors and wood patches are major factors shaping pine marten distribution in intensively cultivated plains and that non-invasive genetic surveys are a cost-effective method for future studies at a broader scale.
机译：意大利北部松貂记录的位置表明，主要河流可能扮演了自然走廊的角色，有利于该物种对低地的定殖。我们评估了在35公里长的提契诺河上的松貂的分布和栖息地利用情况。在2011年10月至2012年6月之间，在2×2 km的网格中沿着线性样条进行了调查。使用标记强度的变化作为生境使用的指标，在​​两个景观水平上评估生境的选择-在横断面尺度上通过χ〜2检验，使用Bonferroni对于使用比例的置信区间，在网格尺度上通过多重线性回归。通过聚合酶链反应-限制性片段长度多态性方法，将91份粪便样品分配给松貂。粪便主要位于林区，而避免了田野。在分析的网格规模上，标记强度与树木斑块的平均面积成正相关，与它们的平均周长-面积比成负相关。这表明松貂的相对丰度可能部分取决于碎木的破碎程度和结构。调查协议允许评估检测的可能性。占用模型概述了检测概率的异质性可能是标记强度（即标记个体的数量）变化的结果。我们的研究结果表明，林地走廊和木块的可用性是影响集约化耕种平原松貂分布的主要因素，无创遗传调查是未来更广泛研究的一种经济有效的方法。

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  • 来源
    《Ecological research》 |2015年第1期|153-162|共10页
  • 作者

    Alessandro Balestrieri; Luigi Remonti; Aritz Ruiz-Gonzalez; Michele Zenato; Andrea Gazzola; Maria Vergara; Ettore E. Dettori; Nicola Saino; Enrica Capelli; Benjamin J. Gomez-Moliner; Franca Guidali; Claudio Prigioni;

  • 作者单位

    Department of Biosciences, University of Milan, Via Celoria 26, 20133 Milan, Italy;

    Department of Earth and Environmental Sciences, University of Pavia, Via Taramelli 22, 27100 Pavia, Italy;

    Department of Zoology and Animal Cell Biology, University of the Basque Country (UPV/EHU), C/Paseo de la Universidad 7, 01006 Vitoria-Gasteiz, Spain,Systematics, Biogeography and Population Dynamics Research Group, Lascaray Research Center, University of the Basque Country (UPV/EHU), Avda. Miguel de Unamuno, 3, 01006 Vitoria-Gasteiz, Spain,Conservation Genetics Laboratory, National Institute for Environmental Protection and Research (ISPRA), Via Ca Fornacetta 9, 40064 Ozzano dell'Emilia, BO, Italy;

    Department of Earth and Environmental Sciences, University of Pavia, Via Taramelli 22, 27100 Pavia, Italy;

    Department of Earth and Environmental Sciences, University of Pavia, Via Taramelli 22, 27100 Pavia, Italy;

    Department of Zoology and Animal Cell Biology, University of the Basque Country (UPV/EHU), C/Paseo de la Universidad 7, 01006 Vitoria-Gasteiz, Spain,Systematics, Biogeography and Population Dynamics Research Group, Lascaray Research Center, University of the Basque Country (UPV/EHU), Avda. Miguel de Unamuno, 3, 01006 Vitoria-Gasteiz, Spain;

    Department of Earth and Environmental Sciences, University of Pavia, Via Taramelli 22, 27100 Pavia, Italy;

    Department of Biosciences, University of Milan, Via Celoria 26, 20133 Milan, Italy;

    Department of Earth and Environmental Sciences, University of Pavia, Via Taramelli 22, 27100 Pavia, Italy;

    Department of Zoology and Animal Cell Biology, University of the Basque Country (UPV/EHU), C/Paseo de la Universidad 7, 01006 Vitoria-Gasteiz, Spain;

    Department of Biosciences, University of Milan, Via Celoria 26, 20133 Milan, Italy;

    Department of Earth and Environmental Sciences, University of Pavia, Via Taramelli 22, 27100 Pavia, Italy;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Non-invasive genetic sampling; Detectability; Faecal DNA; Stone marten; Northern Italy;

    机译：非侵入性基因采样;可检测性;粪便DNA石貂;意大利北部;

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