Item – Theses Canada

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OCLC number
758060862
Link(s) to full text
LAC copy
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. -- Royal Roads University, 2010
Publisher
Ottawa : Library and Archives Canada = Bibliothèque et Archives Canada, [2011]
Description
1 microfiche
Notes
Includes bibliographical references.
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. Simpson's 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.
ISBN
9780494622186
0494622180