Data from: Modelling the functional link between movement, feeding activity and condition in a marine predator
The ability to quantify animals’ feeding activity and the resulting changes in their body condition as they move in the environment is fundamental to our understanding of a population’s ecology. We use satellite tracking data from northern elephant seals (Mirounga angustirostris), paired with simult...
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ftdans:oai:easy.dans.knaw.nl:easy-dataset:114738 2023-07-02T03:32:08+02:00 Data from: Modelling the functional link between movement, feeding activity and condition in a marine predator Pirotta, Enrico Schwarz, Lisa Costa, Daniel Robinson, Patrick New, Leslie 2018-11-27T16:22:48.000+01:00 http://nbn-resolving.org/urn:nbn:nl:ui:13-ut-xr7n https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:114738 unknown doi:10.5061/dryad.r1t6fj5/1 doi:10.5061/dryad.r1t6fj5/2 doi:10.5061/dryad.r1t6fj5/3 http://nbn-resolving.org/urn:nbn:nl:ui:13-ut-xr7n doi:10.5061/dryad.r1t6fj5 https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:114738 OPEN_ACCESS: The data are archived in Easy, they are accessible elsewhere through the DOI https://dans.knaw.nl/en/about/organisation-and-policy/legal-information/DANSLicence.pdf Life sciences medicine and health care 2018 ftdans https://doi.org/10.5061/dryad.r1t6fj5/110.5061/dryad.r1t6fj5/210.5061/dryad.r1t6fj5/310.5061/dryad.r1t6fj5 2023-06-13T13:33:01Z The ability to quantify animals’ feeding activity and the resulting changes in their body condition as they move in the environment is fundamental to our understanding of a population’s ecology. We use satellite tracking data from northern elephant seals (Mirounga angustirostris), paired with simultaneous diving information, to develop a Bayesian state-space model that concurrently estimates an individual’s location, feeding activity, and changes in condition. The model identifies important foraging areas and times, the relative amount of feeding occurring therein and thus the different behavioral strategies in which the seals engage. The fitness implications of these strategies can be assessed by looking at the resulting variation in individuals’ condition, which in turn affects the condition and survival of their offspring. Therefore, our results shed light on the processes affecting an individual’s decision-making as it moves and feeds in the environment. In addition, we demonstrate how the model can be used to simulate realistic patterns of disturbance at different stages of the trip, and how the predicted accumulation of lipid reserves varies as a consequence. Particularly, disturbing an animal in periods of high feeding activity or shortly after leaving the colony was predicted to have the potential to lead to starvation. In contrast, an individual could compensate even for very severe disturbance if such disturbance occurred outside the main foraging grounds. Our modelling approach is applicable to marine mammal species that perform drift dives, and can be extended to other species where an individual’s buoyancy can be inferred from its diving behavior. Other/Unknown Material Elephant Seals Data Archiving and Networked Services (DANS): EASY (KNAW - Koninklijke Nederlandse Akademie van Wetenschappen) |
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Data Archiving and Networked Services (DANS): EASY (KNAW - Koninklijke Nederlandse Akademie van Wetenschappen) |
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Life sciences medicine and health care |
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Life sciences medicine and health care Pirotta, Enrico Schwarz, Lisa Costa, Daniel Robinson, Patrick New, Leslie Data from: Modelling the functional link between movement, feeding activity and condition in a marine predator |
topic_facet |
Life sciences medicine and health care |
description |
The ability to quantify animals’ feeding activity and the resulting changes in their body condition as they move in the environment is fundamental to our understanding of a population’s ecology. We use satellite tracking data from northern elephant seals (Mirounga angustirostris), paired with simultaneous diving information, to develop a Bayesian state-space model that concurrently estimates an individual’s location, feeding activity, and changes in condition. The model identifies important foraging areas and times, the relative amount of feeding occurring therein and thus the different behavioral strategies in which the seals engage. The fitness implications of these strategies can be assessed by looking at the resulting variation in individuals’ condition, which in turn affects the condition and survival of their offspring. Therefore, our results shed light on the processes affecting an individual’s decision-making as it moves and feeds in the environment. In addition, we demonstrate how the model can be used to simulate realistic patterns of disturbance at different stages of the trip, and how the predicted accumulation of lipid reserves varies as a consequence. Particularly, disturbing an animal in periods of high feeding activity or shortly after leaving the colony was predicted to have the potential to lead to starvation. In contrast, an individual could compensate even for very severe disturbance if such disturbance occurred outside the main foraging grounds. Our modelling approach is applicable to marine mammal species that perform drift dives, and can be extended to other species where an individual’s buoyancy can be inferred from its diving behavior. |
author |
Pirotta, Enrico Schwarz, Lisa Costa, Daniel Robinson, Patrick New, Leslie |
author_facet |
Pirotta, Enrico Schwarz, Lisa Costa, Daniel Robinson, Patrick New, Leslie |
author_sort |
Pirotta, Enrico |
title |
Data from: Modelling the functional link between movement, feeding activity and condition in a marine predator |
title_short |
Data from: Modelling the functional link between movement, feeding activity and condition in a marine predator |
title_full |
Data from: Modelling the functional link between movement, feeding activity and condition in a marine predator |
title_fullStr |
Data from: Modelling the functional link between movement, feeding activity and condition in a marine predator |
title_full_unstemmed |
Data from: Modelling the functional link between movement, feeding activity and condition in a marine predator |
title_sort |
data from: modelling the functional link between movement, feeding activity and condition in a marine predator |
publishDate |
2018 |
url |
http://nbn-resolving.org/urn:nbn:nl:ui:13-ut-xr7n https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:114738 |
genre |
Elephant Seals |
genre_facet |
Elephant Seals |
op_relation |
doi:10.5061/dryad.r1t6fj5/1 doi:10.5061/dryad.r1t6fj5/2 doi:10.5061/dryad.r1t6fj5/3 http://nbn-resolving.org/urn:nbn:nl:ui:13-ut-xr7n doi:10.5061/dryad.r1t6fj5 https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:114738 |
op_rights |
OPEN_ACCESS: The data are archived in Easy, they are accessible elsewhere through the DOI https://dans.knaw.nl/en/about/organisation-and-policy/legal-information/DANSLicence.pdf |
op_doi |
https://doi.org/10.5061/dryad.r1t6fj5/110.5061/dryad.r1t6fj5/210.5061/dryad.r1t6fj5/310.5061/dryad.r1t6fj5 |
_version_ |
1770271639354736640 |