Download the full-sized PDF of Impacts of clear-cut harvesting on carabid beetle (Coleoptera: Carabidae) assemblages of aspen dominated forests in central AlbertaDownload the full-sized PDF



Permanent link (DOI):


Export to: EndNote  |  Zotero  |  Mendeley


This file is in the following communities:

Graduate Studies and Research, Faculty of


This file is in the following collections:

Theses and Dissertations

Impacts of clear-cut harvesting on carabid beetle (Coleoptera: Carabidae) assemblages of aspen dominated forests in central Alberta Open Access


Other title
Carabid beetles
functional diversity
Type of item
Degree grantor
University of Alberta
Author or creator
La Rocca, Claudio A
Supervisor and department
Fangliang He
John R. Spence
Examining committee member and department
Andrew Keddie
Department of Renewable Resources
Forest Biology and Management
Date accepted
Graduation date
2016-06:Fall 2016
Master of Science
Degree level
Disturbances, both natural and those related to human activity, reset succession in boreal ecosystems, and affect forest biodiversity. The link between forest harvesting and biodiversity is of considerable conservation concern. In this thesis, I investigate the impacts of clear-cut harvesting on carabid beetle assemblages, dominant predators in ground dwelling communities, and explore alternative approaches to assess their recovery patterns along a regeneration chronosequence of aspen (Populus tremuloides) dominated forest stands in west central Alberta, Canada. Specifically, I show how forest age, or time since last harvest, can only partially characterize impacts on carabid assemblages, and how in addition of small scale habitat characteristics in statistical models can improve description of the recovery patterns. I also explore the use of alternative biodiversity indexes to assess the impacts of harvesting activities. I use indices that account for the functional complexity of carabid assemblages, and for the array of life traits expressed, specifically functional richness. My results show that, although time after harvest is important in explaining carabid beetle assemblage recovery, the use of small scale habitat variables increases the explanation for the effect of post-harvesting on recovery of carabid beetle assemblages. This improves our understanding of clear cut harvest impacts and post harvest regeneration for carabid beetle assemblages. In addition, measures of functional traits show a clear reduction in functional diversity in carabid beetles after clear-cut harvesting. Overall, this thesis provides new information about carabid assemblages in aspen dominated forests of the eastern slopes of the Rockies and develops wider approach for research on carabid beetle diversity in forests. I have also tried to highlight the potential usefulness of functional diversity in integrated biodiversity studies aimed at understanding the impact of forest harvest.
This thesis is made available by the University of Alberta Libraries with permission of the copyright owner solely for the purpose of private, scholarly or scientific research. This thesis, or any portion thereof, may not otherwise be copied or reproduced without the written consent of the copyright owner, except to the extent permitted by Canadian copyright law.
Citation for previous publication

File Details

Date Uploaded
Date Modified
Audit Status
Audits have not yet been run on this file.
File format: pdf (PDF/A)
Mime type: application/pdf
File size: 2858463
Last modified: 2016:11:16 13:19:40-07:00
Filename: La Rocca_ Claudio_A_201609_MSc.pdf
Original checksum: 2bba41b24706ade48c85200727e339d4
Activity of users you follow
User Activity Date