How animal movement defines behaviour: new insights into the ecology of seabirds at sea
How animals move through their environment defines their ecology at an individual and population level. All animals must search for food to survive and how they do this can be influenced by the world around them as well as their own internal state. Our understanding of animal ecology has been dramat...
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Language: | English |
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University College Cork
2020
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Online Access: | http://hdl.handle.net/10468/11370 |
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ftunivcollcork:oai:cora.ucc.ie:10468/11370 2023-08-27T04:09:30+02:00 How animal movement defines behaviour: new insights into the ecology of seabirds at sea Bennison, Ashley Jessopp, Mark John Quinn, John 2020-10-01 application/pdf http://hdl.handle.net/10468/11370 en eng University College Cork Bennison, A. 2020. How animal movement defines behaviour: new insights into the ecology of seabirds at sea. PhD Thesis, University College Cork. 174 http://hdl.handle.net/10468/11370 © 2020, Ashley Bennison. https://creativecommons.org/licenses/by-nc/4.0/ Seabird Ecology Movement Doctoral thesis Doctoral PhD - Doctor of Philosophy 2020 ftunivcollcork 2023-08-06T14:29:40Z How animals move through their environment defines their ecology at an individual and population level. All animals must search for food to survive and how they do this can be influenced by the world around them as well as their own internal state. Our understanding of animal ecology has been dramatically expanded thanks to the continued development and miniaturisation of data loggers that can be attached to animals. Data from these biologgers remain challenging to interpret, but shed light on the behavioural ecology of individual animals. In this thesis, I use movement data from seabirds to explore the mechanisms behind foraging and how these are underpinned by the movement of individual animals. In chapter 1, I provide an introductory overview of the literature and introduce my study species. In chapter 2, I examine the methods available to interpreting behaviour from animal relocation data showing that Hidden Markov Models (HMMs) outcompete other behavioural annotation methods – successfully identifying 81% of plunge dives in northern gannets, Morus bassanus. I then provide recommendations for best practice when defining periods of search and prey capture behaviour. In chapter 3, I show how environmental features may ultimately disrupt the expected movement of optimal foraging, and show that Atlantic puffins, Fratercula arctica, in southeast Ireland have departed from classic Area Restricted Search (ARS). These findings are considered in an energetic perspective and suggest that puffins may be saving between 28-46% of the energy required to fly the same distance. In chapter 4, I utilise acceleration data to document the bioenergetic sex differences of prey capture attempts in northern gannets, examining the links between diet, movement, and energy expenditure. Stable isotope analysis showed dietary differences between the sexes, but energetic content of divergent diets was the same. Prey capture attempts are not energetically expensive for gannets (<4% of energy expenditure in all northern gannets) and ... Doctoral or Postdoctoral Thesis fratercula Fratercula arctica University College Cork, Ireland: Cork Open Research Archive (CORA) |
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Open Polar |
collection |
University College Cork, Ireland: Cork Open Research Archive (CORA) |
op_collection_id |
ftunivcollcork |
language |
English |
topic |
Seabird Ecology Movement |
spellingShingle |
Seabird Ecology Movement Bennison, Ashley How animal movement defines behaviour: new insights into the ecology of seabirds at sea |
topic_facet |
Seabird Ecology Movement |
description |
How animals move through their environment defines their ecology at an individual and population level. All animals must search for food to survive and how they do this can be influenced by the world around them as well as their own internal state. Our understanding of animal ecology has been dramatically expanded thanks to the continued development and miniaturisation of data loggers that can be attached to animals. Data from these biologgers remain challenging to interpret, but shed light on the behavioural ecology of individual animals. In this thesis, I use movement data from seabirds to explore the mechanisms behind foraging and how these are underpinned by the movement of individual animals. In chapter 1, I provide an introductory overview of the literature and introduce my study species. In chapter 2, I examine the methods available to interpreting behaviour from animal relocation data showing that Hidden Markov Models (HMMs) outcompete other behavioural annotation methods – successfully identifying 81% of plunge dives in northern gannets, Morus bassanus. I then provide recommendations for best practice when defining periods of search and prey capture behaviour. In chapter 3, I show how environmental features may ultimately disrupt the expected movement of optimal foraging, and show that Atlantic puffins, Fratercula arctica, in southeast Ireland have departed from classic Area Restricted Search (ARS). These findings are considered in an energetic perspective and suggest that puffins may be saving between 28-46% of the energy required to fly the same distance. In chapter 4, I utilise acceleration data to document the bioenergetic sex differences of prey capture attempts in northern gannets, examining the links between diet, movement, and energy expenditure. Stable isotope analysis showed dietary differences between the sexes, but energetic content of divergent diets was the same. Prey capture attempts are not energetically expensive for gannets (<4% of energy expenditure in all northern gannets) and ... |
author2 |
Jessopp, Mark John Quinn, John |
format |
Doctoral or Postdoctoral Thesis |
author |
Bennison, Ashley |
author_facet |
Bennison, Ashley |
author_sort |
Bennison, Ashley |
title |
How animal movement defines behaviour: new insights into the ecology of seabirds at sea |
title_short |
How animal movement defines behaviour: new insights into the ecology of seabirds at sea |
title_full |
How animal movement defines behaviour: new insights into the ecology of seabirds at sea |
title_fullStr |
How animal movement defines behaviour: new insights into the ecology of seabirds at sea |
title_full_unstemmed |
How animal movement defines behaviour: new insights into the ecology of seabirds at sea |
title_sort |
how animal movement defines behaviour: new insights into the ecology of seabirds at sea |
publisher |
University College Cork |
publishDate |
2020 |
url |
http://hdl.handle.net/10468/11370 |
genre |
fratercula Fratercula arctica |
genre_facet |
fratercula Fratercula arctica |
op_relation |
Bennison, A. 2020. How animal movement defines behaviour: new insights into the ecology of seabirds at sea. PhD Thesis, University College Cork. 174 http://hdl.handle.net/10468/11370 |
op_rights |
© 2020, Ashley Bennison. https://creativecommons.org/licenses/by-nc/4.0/ |
_version_ |
1775350939997175808 |