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Permanent link (DOI): https://doi.org/10.7939/R3RN30K3F

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The Biogeography of Ground Beetles (Coleoptera: Carabidae) on the Islands of Lac la Ronge, Saskatchewan, Canada Open Access

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Other title
Subject/Keyword
beetle
ecology
biogeography
island
diversity
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Bell, Aaron J
Supervisor and department
Spence, John (Renewable Resources)
Nielsen, Scott (Renewable Resources)
Examining committee member and department
He, Fangliang (Renewable Resources)
Spence, John (Renewable Resources)
Erbilgin, Nadir (Renewable Resources)
Nielsen, Scott (Renewable Resources)
Department
Department of Renewable Resources
Specialization
Conservation Biology
Date accepted
2015-09-30T09:57:23Z
Graduation date
2015-11
Degree
Master of Science
Degree level
Master's
Abstract
Islands offer unusual opportunities for studying theoretical concepts in ecology. I studied the role of island size and isolation in structuring assemblages of ground beetles (Coleoptera: Carabidae) on the islands and adjacent mainland of Lac la Ronge, Saskatchewan, Canada. Carabid beetles were collected on 30 islands (0.2 – 980.7 ha in size, 0.13 – 10.7 km from mainland) and five mainland sites using pitfall traps throughout the frost-free season. Carabid body size, wing length and seasonal activity information was obtained from the literature. In wing-dimorphic species, wing length was diagnosed by removing the elytra and subsequent dissections to determine the condition of flight muscles. Island size was an important factor affecting beetle assemblage, diversity, and population processes on islands. Island isolation did not negatively influence diversity at the scales examined in this study. Life history characteristics of species such as body size, wing length, and breeding period significantly influenced the distribution of beetles on islands. This work suggests that small islands experience greater turnover of carabids, particularly large-bodied flightless species, and that this may account for the island area effect observed in this island system.
Language
English
DOI
doi:10.7939/R3RN30K3F
Rights
Permission is hereby granted to the University of Alberta Libraries to reproduce single copies of this thesis and to lend or sell such copies for private, scholarly or scientific research purposes only. The author reserves all other publication and other rights in association with the copyright in the thesis and, except as herein before provided, neither the thesis nor any substantial portion thereof may be printed or otherwise reproduced in any material form whatsoever without the author's prior written permission.
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