Item – Theses Canada

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OCLC number
1032922245
Link(s) to full text
LAC copy
Author
Astley, Caroline,1975-
Title
How does Himalayan Blackberry (Rubus armeniacus) impact breeding bird diversity? : a case study of the Lower Mainland of British Columbia.
Degree
(M. Sc. in Environment and Management)--Royal Roads University, 2010.
Publisher
Victoria : Royal Roads University, 2010.
Description
1 online resource
Notes
Includes bibliographical references.
Http://dspace.royalroads.ca/docs/bitstream/handle/10170/365/license.txt?sequence=2.
Abstract
Awareness of the spread of invasive plant species has grown, but quantitative measures of their impacts are lacking. This study analyses the impact of Himalayan blackberry (Rubus armeniacus) on breeding bird diversity finding a significant difference in bird diversity between natural and R. armeniacus-dominated understoreys. More bird species were noted in habitats with greater structural and compositional diversity. Simpsons richness/evenness index was significantly different between habitat types for Stanley Park and Maplewood Flats (P<0.05) but not Jericho Park (P>0.05), likely due to lower overall bird diversity at Jericho Park and lack of overstorey trees at R. armeniacus thickets. When R. armeniacus is the dominant understorey shrub in a forested setting it has the greatest negative impact on breeding bird diversity.
Other link(s)
hdl.handle.net
dspace.royalroads.ca
Subject
environmental sciences.
biology.
invasive plants.
breeding birds.
lower mainland BC.