How does Himalayan Blackberry (Rubus armeniacus) impact breeding bird diversity? : a case study of the Lower Mainland of British Columbia
MetadataShow full item record
Subjectecology; environmental sciences; biology; invasive plants; breeding birds; lower mainland BC
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.
Showing items related by title, author, creator and subject.
Anderson, Allyson (Electronic version published by Vancouver Island University, 11/20/2015)Stereotypes of Indigenous women abound in the colonial imaginations of North Americans, yet representations of the Métisse (women of mixed blood, and/or historic Métis) are rare. This presentation asserts that the few ...
Little known and little understood: Development of a small wetland assessment field card to identify potential breeding habitat for amphibians Wind, Elke; Beese, William J. (FORREX, 2008)The effect of timber harvesting on small wetland habitats and associated amphibians has not been studied in the Pacific Northwest. In 2004, we initiated a study of three forested sites containing 70+ small wetlands in ...
Forest patch size and breeding territory selection by coastal swainson's thrush (Catharus ustulatis ustulatis) in BC's Georgia Basin Stephens, Christopher Mark (2014-11-05)Many of North America's 250 species of Neotropical migrant songbirds have declined in the 20th and early 21st centuries. Forest fragmentation can introduce limiting factors to bird habitats as edge to interior ratios ...