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Author (up) Grenis, K.; Tjossem, B.; Murphy, S. url  doi
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  Title Predation of larval Lepidoptera in habitat fragments varies spatially and temporally but is not affected by light pollution Type Journal Article
  Year 2015 Publication Journal of Insect Conservation Abbreviated Journal J. of Insect Cons.  
  Volume 19 Issue 3 Pages 559–566  
  Keywords Animals; Anthropogenic disturbance; Arthropods; Conservation of Lepidoptera; Edge effects; Light pollution; Temporal variation  
  Abstract As human populations continue to expand, many more species are affected by habitat fragmentation and urbanization. One of the most common themes in studies of fragmented habitats is finding higher rates of predation along habitat edges. However, field studies supporting this pattern are heavily influenced by avian literature and may not apply similarly to other organisms, such as invertebrates. Field studies of predation are typically performed during the day or do not distinguish between day and night; these studies therefore overlook daily fluctuations in predation and may miss important effects that occur solely at night, such as light pollution from streetlights. We tested whether predation of larval Lepidoptera differed between edge and core habitats and also whether predation along the habitat edge varied in response to light pollution from streetlights. We placed larvae in the core of suburban habitat patches and along the habitat edge, both under streetlights as well as between streetlights where it was dark. We found that predation rate increased in both edge and core habitats over the summer. Early season, we found daily fluctuations in predation dynamics with greater predation along the habitat edge than in the habitat core during the day, but not at night. Additionally, we found that streetlights did not affect predation rate along the habitat edge. Our results suggest that increased predation along habitat edges may be a diurnal effect.  
  Address Department of Biological Sciences, University of Denver, Denver, CO, USA  
  Corporate Author Thesis  
  Publisher Springer Place of Publication Editor  
  Language English Summary Language English Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number IDA @ john @ Serial 1171  
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