The influence of prey availability, habitat attributes and other factors on space use by social carnivores
Ecology is the study of the processes resulting in the observed distribution and abundance patterns of organisms across the landscape. These patterns reflect individual movement decisions, the cumulative effects of which result in population-level patterns that drive systems. Of profound importance...
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2014
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ftunivguelph:oai:atrium.lib.uoguelph.ca:10214/8606 2023-12-24T10:15:51+01:00 The influence of prey availability, habitat attributes and other factors on space use by social carnivores Kittle, Andrew Marten Fryxell, John 2014-12-01 application/pdf http://hdl.handle.net/10214/8606 en eng University of Guelph http://hdl.handle.net/10214/8606 All items in the Atrium are protected by copyright with all rights reserved unless otherwise indicated. Resource selection apex predators Territoriality Prey availability Competition Canis lupus Panthera leo Foraging theory Thesis 2014 ftunivguelph 2023-11-26T00:02:22Z Ecology is the study of the processes resulting in the observed distribution and abundance patterns of organisms across the landscape. These patterns reflect individual movement decisions, the cumulative effects of which result in population-level patterns that drive systems. Of profound importance therefore, is determining the factors that influence these decisions. This is vital for apex, social predators given their potential to strongly influence the spatial patterns of their prey both directly through the predation process and indirectly mediated by their prey’s behavioural responses to perceived predation risk. These influences can resonate across trophic levels. In this PhD thesis I investigate the factors affecting space use decisions by two apex social carnivores in contrasting systems with an emphasis on directly comparing the most fundamental potential drivers - prey distribution and habitat attributes that enable efficient prey capture. I employ a novel methodological approach by creating population-level utilization distributions constructed from those at the individual group-level, as a measure of predator space use. This allows for broad-scale patterns to be assessed while retaining individual group-level variation and reflecting territoriality. Results indicate that social predator space use is consistently influenced by habitat attributes that should improve predation efficiency either by increasing the vulnerability of potential prey or by spatially anchoring predator search to compensate for unpredictable prey movement. While habitat attributes are influential across seasons and at a variety of spatial scales, I also find that prey availability is an important additional predictor of predator space use under certain ecological conditions, specifically when overall prey abundance is high. This implication of a possible threshold in prey density impacting predator spatial behaviour is intriguing and opens a fertile area of further study. I also clearly demonstrate that predators are adapting ... Thesis Canis lupus University of Guelph: DSpace digital archive |
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Open Polar |
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University of Guelph: DSpace digital archive |
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ftunivguelph |
language |
English |
topic |
Resource selection apex predators Territoriality Prey availability Competition Canis lupus Panthera leo Foraging theory |
spellingShingle |
Resource selection apex predators Territoriality Prey availability Competition Canis lupus Panthera leo Foraging theory Kittle, Andrew Marten The influence of prey availability, habitat attributes and other factors on space use by social carnivores |
topic_facet |
Resource selection apex predators Territoriality Prey availability Competition Canis lupus Panthera leo Foraging theory |
description |
Ecology is the study of the processes resulting in the observed distribution and abundance patterns of organisms across the landscape. These patterns reflect individual movement decisions, the cumulative effects of which result in population-level patterns that drive systems. Of profound importance therefore, is determining the factors that influence these decisions. This is vital for apex, social predators given their potential to strongly influence the spatial patterns of their prey both directly through the predation process and indirectly mediated by their prey’s behavioural responses to perceived predation risk. These influences can resonate across trophic levels. In this PhD thesis I investigate the factors affecting space use decisions by two apex social carnivores in contrasting systems with an emphasis on directly comparing the most fundamental potential drivers - prey distribution and habitat attributes that enable efficient prey capture. I employ a novel methodological approach by creating population-level utilization distributions constructed from those at the individual group-level, as a measure of predator space use. This allows for broad-scale patterns to be assessed while retaining individual group-level variation and reflecting territoriality. Results indicate that social predator space use is consistently influenced by habitat attributes that should improve predation efficiency either by increasing the vulnerability of potential prey or by spatially anchoring predator search to compensate for unpredictable prey movement. While habitat attributes are influential across seasons and at a variety of spatial scales, I also find that prey availability is an important additional predictor of predator space use under certain ecological conditions, specifically when overall prey abundance is high. This implication of a possible threshold in prey density impacting predator spatial behaviour is intriguing and opens a fertile area of further study. I also clearly demonstrate that predators are adapting ... |
author2 |
Fryxell, John |
format |
Thesis |
author |
Kittle, Andrew Marten |
author_facet |
Kittle, Andrew Marten |
author_sort |
Kittle, Andrew Marten |
title |
The influence of prey availability, habitat attributes and other factors on space use by social carnivores |
title_short |
The influence of prey availability, habitat attributes and other factors on space use by social carnivores |
title_full |
The influence of prey availability, habitat attributes and other factors on space use by social carnivores |
title_fullStr |
The influence of prey availability, habitat attributes and other factors on space use by social carnivores |
title_full_unstemmed |
The influence of prey availability, habitat attributes and other factors on space use by social carnivores |
title_sort |
influence of prey availability, habitat attributes and other factors on space use by social carnivores |
publisher |
University of Guelph |
publishDate |
2014 |
url |
http://hdl.handle.net/10214/8606 |
genre |
Canis lupus |
genre_facet |
Canis lupus |
op_relation |
http://hdl.handle.net/10214/8606 |
op_rights |
All items in the Atrium are protected by copyright with all rights reserved unless otherwise indicated. |
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1786203053044531200 |