Central place foragers and moving stimuli: A hidden‐state model to discriminate the processes affecting movement
Abstract Human activities can influence the movement of organisms, either repelling or attracting individuals depending on whether they interfere with natural behavioural patterns or enhance access to food. To discern the processes affecting such interactions, an appropriate analytical approach must...
Published in: | Journal of Animal Ecology |
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crwiley:10.1111/1365-2656.12830 2024-09-15T18:07:11+00:00 Central place foragers and moving stimuli: A hidden‐state model to discriminate the processes affecting movement Pirotta, Enrico Edwards, Ewan W. J. New, Leslie Thompson, Paul M. Börger, Luca University of Aberdeen 2018 http://dx.doi.org/10.1111/1365-2656.12830 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2F1365-2656.12830 https://besjournals.onlinelibrary.wiley.com/doi/pdf/10.1111/1365-2656.12830 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Animal Ecology volume 87, issue 4, page 1116-1125 ISSN 0021-8790 1365-2656 journal-article 2018 crwiley https://doi.org/10.1111/1365-2656.12830 2024-08-01T04:20:35Z Abstract Human activities can influence the movement of organisms, either repelling or attracting individuals depending on whether they interfere with natural behavioural patterns or enhance access to food. To discern the processes affecting such interactions, an appropriate analytical approach must reflect the motivations driving behavioural decisions at multiple scales. In this study, we developed a modelling framework for the analysis of foraging trips by central place foragers. By recognising the distinction between movement phases at a larger scale and movement steps at a finer scale, our model can identify periods when animals are actively following moving attractors in their landscape. We applied the framework to GPS tracking data of northern fulmars Fulmarus glacialis , paired with contemporaneous fishing boat locations, to quantify the putative scavenging activity of these seabirds on discarded fish and offal. We estimated the rate and scale of interaction between individual birds and fishing boats and the interplay with other aspects of a foraging trip. The model classified periods when birds were heading out to sea, returning towards the colony or following the closest boat. The probability of switching towards a boat declined with distance and varied depending on the phase of the trip. The maximum distance at which a bird switched towards the closest boat was estimated around 35 km, suggesting the use of olfactory information to locate food. Individuals spent a quarter of a foraging trip, on average, following fishing boats, with marked heterogeneity among trips and individuals. Our approach can be used to characterise interactions between central place foragers and different anthropogenic or natural stimuli. The model identifies the processes influencing central place foraging at multiple scales, which can improve our understanding of the mechanisms underlying movement behaviour and characterise individual variation in interactions with a range of human activities that may attract or repel these ... Article in Journal/Newspaper Fulmarus glacialis Wiley Online Library Journal of Animal Ecology 87 4 1116 1125 |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract Human activities can influence the movement of organisms, either repelling or attracting individuals depending on whether they interfere with natural behavioural patterns or enhance access to food. To discern the processes affecting such interactions, an appropriate analytical approach must reflect the motivations driving behavioural decisions at multiple scales. In this study, we developed a modelling framework for the analysis of foraging trips by central place foragers. By recognising the distinction between movement phases at a larger scale and movement steps at a finer scale, our model can identify periods when animals are actively following moving attractors in their landscape. We applied the framework to GPS tracking data of northern fulmars Fulmarus glacialis , paired with contemporaneous fishing boat locations, to quantify the putative scavenging activity of these seabirds on discarded fish and offal. We estimated the rate and scale of interaction between individual birds and fishing boats and the interplay with other aspects of a foraging trip. The model classified periods when birds were heading out to sea, returning towards the colony or following the closest boat. The probability of switching towards a boat declined with distance and varied depending on the phase of the trip. The maximum distance at which a bird switched towards the closest boat was estimated around 35 km, suggesting the use of olfactory information to locate food. Individuals spent a quarter of a foraging trip, on average, following fishing boats, with marked heterogeneity among trips and individuals. Our approach can be used to characterise interactions between central place foragers and different anthropogenic or natural stimuli. The model identifies the processes influencing central place foraging at multiple scales, which can improve our understanding of the mechanisms underlying movement behaviour and characterise individual variation in interactions with a range of human activities that may attract or repel these ... |
author2 |
Börger, Luca University of Aberdeen |
format |
Article in Journal/Newspaper |
author |
Pirotta, Enrico Edwards, Ewan W. J. New, Leslie Thompson, Paul M. |
spellingShingle |
Pirotta, Enrico Edwards, Ewan W. J. New, Leslie Thompson, Paul M. Central place foragers and moving stimuli: A hidden‐state model to discriminate the processes affecting movement |
author_facet |
Pirotta, Enrico Edwards, Ewan W. J. New, Leslie Thompson, Paul M. |
author_sort |
Pirotta, Enrico |
title |
Central place foragers and moving stimuli: A hidden‐state model to discriminate the processes affecting movement |
title_short |
Central place foragers and moving stimuli: A hidden‐state model to discriminate the processes affecting movement |
title_full |
Central place foragers and moving stimuli: A hidden‐state model to discriminate the processes affecting movement |
title_fullStr |
Central place foragers and moving stimuli: A hidden‐state model to discriminate the processes affecting movement |
title_full_unstemmed |
Central place foragers and moving stimuli: A hidden‐state model to discriminate the processes affecting movement |
title_sort |
central place foragers and moving stimuli: a hidden‐state model to discriminate the processes affecting movement |
publisher |
Wiley |
publishDate |
2018 |
url |
http://dx.doi.org/10.1111/1365-2656.12830 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2F1365-2656.12830 https://besjournals.onlinelibrary.wiley.com/doi/pdf/10.1111/1365-2656.12830 |
genre |
Fulmarus glacialis |
genre_facet |
Fulmarus glacialis |
op_source |
Journal of Animal Ecology volume 87, issue 4, page 1116-1125 ISSN 0021-8790 1365-2656 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/1365-2656.12830 |
container_title |
Journal of Animal Ecology |
container_volume |
87 |
container_issue |
4 |
container_start_page |
1116 |
op_container_end_page |
1125 |
_version_ |
1810444571963817984 |