Abundance of Aerially-Dispersing Spiders Declines with Increasing Road Traffic

IF 1.3 4区 环境科学与生态学 Q3 ECOLOGY Ecoscience Pub Date : 2019-06-17 DOI:10.1080/11956860.2019.1629060
Amanda E. Martin, E. Pervin, S. L. Graham, M. Henry, L. Fahrig
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引用次数: 3

Abstract

ABSTRACT Roads and traffic have been implicated in population declines in a number of taxonomic groups. However, there is little research into the potential effects of roads or traffic on spiders. Here, we tested the prediction that there would be fewer aerially-dispersing (i.e., ballooning) spiders at high-traffic than low-traffic roads. We used custom-made sticky traps attached to a vehicle to collect ballooning spiders along 10 high-traffic–low-traffic rural road pairs in southeastern Ontario, Canada. We collected half as many spiders at high-traffic than low-traffic roads. This provides the first published evidence of negative traffic effects on ballooning spiders. Although consistent with our prediction that ballooning spiders are less abundant at high-traffic roads, there are several possible explanations for this finding. Further study is needed to investigate these explanations, including whether the observed traffic effect reflects reduced population sizes near high-traffic roads or reduced ballooning behaviour near high-traffic roads. If the former, then roads may represent a significant conservation concern for ballooning spider species.
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空中散布蜘蛛的丰度随着道路交通的增加而下降
在许多分类类群中,道路和交通与人口减少有关。然而,关于道路或交通对蜘蛛的潜在影响的研究很少。在这里,我们测试了这样一个预测,即在交通繁忙的道路上,空中分散(即气球)的蜘蛛会比交通繁忙的道路少。我们在加拿大安大略省东南部的10条高交通流量和低交通流量的乡村道路上,使用了安装在车辆上的定制粘性陷阱来收集气球蜘蛛。在交通繁忙的道路上,我们收集到的蜘蛛数量是交通繁忙道路的一半。这提供了第一个公开的证据,证明交通对气球蜘蛛的负面影响。尽管与我们的预测一致,即气球蜘蛛在交通繁忙的道路上数量较少,但对于这一发现有几种可能的解释。需要进一步的研究来调查这些解释,包括观察到的交通影响是否反映了高交通道路附近的人口规模减少或高交通道路附近的气球行为减少。如果是前者,那么道路可能代表了对气球蜘蛛物种的重要保护。
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来源期刊
Ecoscience
Ecoscience 环境科学-生态学
CiteScore
2.80
自引率
0.00%
发文量
13
审稿时长
>36 weeks
期刊介绍: Écoscience, is a multidisciplinary journal that covers all aspects of ecology. The journal welcomes submissions in English or French and publishes original work focusing on patterns and processes at various temporal and spatial scales across different levels of biological organization. Articles include original research, brief communications and reviews.
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