Diving Behavior of Mirounga leonina: A Functional Data Analysis Approach
The diving behavior of southern elephant seals, Mirounga leonina, is investigated through the analysis of time-depth dive profiles. The originality of this work is to consider dive profiles as continuous curves. For this purpose, a Functional Data Analysis (FDA) approach is proposed for the shape an...
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ftdoajarticles:oai:doaj.org/article:db6ed893d13b4b83a23050aaeaa2165f 2023-05-15T16:05:39+02:00 Diving Behavior of Mirounga leonina: A Functional Data Analysis Approach Morgan Godard Claude Manté Christophe Guinet Baptiste Picard David Nerini 2020-09-01T00:00:00Z https://doi.org/10.3389/fmars.2020.00595 https://doaj.org/article/db6ed893d13b4b83a23050aaeaa2165f EN eng Frontiers Media S.A. https://www.frontiersin.org/article/10.3389/fmars.2020.00595/full https://doaj.org/toc/2296-7745 2296-7745 doi:10.3389/fmars.2020.00595 https://doaj.org/article/db6ed893d13b4b83a23050aaeaa2165f Frontiers in Marine Science, Vol 7 (2020) elephant seals foraging behavior functional data analysis capture events dive curves Science Q General. Including nature conservation geographical distribution QH1-199.5 article 2020 ftdoajarticles https://doi.org/10.3389/fmars.2020.00595 2022-12-30T22:20:16Z The diving behavior of southern elephant seals, Mirounga leonina, is investigated through the analysis of time-depth dive profiles. The originality of this work is to consider dive profiles as continuous curves. For this purpose, a Functional Data Analysis (FDA) approach is proposed for the shape analysis of a collection of dive profiles. Complexity of dive shapes is characterized by a mixture of three main shape variations accounting for about 80% of the entire variability: U or V shape, vertical depth variability during the bottom time, and skewed left or right. Model-based clustering allows the identification of eight dive shape clusters in a quick and automated way. Connection between shape patterns and classical descriptors, as well as the number of prey capture events, is achieved, showing that the clusters are coherent to specific foraging behaviors previously identified in the literature labeled as drift, exploratory and active dives. Finally, FDA is compared to classical methods relying on the computation of discrete dive descriptors. Results show that taking the shape of the dive as a whole is more resilient to corrupted or incomplete sampled data. FDA is, therefore, an efficient tool adapted for processing and comparing dive data with different sampling frequencies and for improving the quality and the accuracy of transmitted data. Article in Journal/Newspaper Elephant Seals Mirounga leonina Southern Elephant Seals Directory of Open Access Journals: DOAJ Articles Frontiers in Marine Science 7 |
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Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
elephant seals foraging behavior functional data analysis capture events dive curves Science Q General. Including nature conservation geographical distribution QH1-199.5 |
spellingShingle |
elephant seals foraging behavior functional data analysis capture events dive curves Science Q General. Including nature conservation geographical distribution QH1-199.5 Morgan Godard Claude Manté Christophe Guinet Baptiste Picard David Nerini Diving Behavior of Mirounga leonina: A Functional Data Analysis Approach |
topic_facet |
elephant seals foraging behavior functional data analysis capture events dive curves Science Q General. Including nature conservation geographical distribution QH1-199.5 |
description |
The diving behavior of southern elephant seals, Mirounga leonina, is investigated through the analysis of time-depth dive profiles. The originality of this work is to consider dive profiles as continuous curves. For this purpose, a Functional Data Analysis (FDA) approach is proposed for the shape analysis of a collection of dive profiles. Complexity of dive shapes is characterized by a mixture of three main shape variations accounting for about 80% of the entire variability: U or V shape, vertical depth variability during the bottom time, and skewed left or right. Model-based clustering allows the identification of eight dive shape clusters in a quick and automated way. Connection between shape patterns and classical descriptors, as well as the number of prey capture events, is achieved, showing that the clusters are coherent to specific foraging behaviors previously identified in the literature labeled as drift, exploratory and active dives. Finally, FDA is compared to classical methods relying on the computation of discrete dive descriptors. Results show that taking the shape of the dive as a whole is more resilient to corrupted or incomplete sampled data. FDA is, therefore, an efficient tool adapted for processing and comparing dive data with different sampling frequencies and for improving the quality and the accuracy of transmitted data. |
format |
Article in Journal/Newspaper |
author |
Morgan Godard Claude Manté Christophe Guinet Baptiste Picard David Nerini |
author_facet |
Morgan Godard Claude Manté Christophe Guinet Baptiste Picard David Nerini |
author_sort |
Morgan Godard |
title |
Diving Behavior of Mirounga leonina: A Functional Data Analysis Approach |
title_short |
Diving Behavior of Mirounga leonina: A Functional Data Analysis Approach |
title_full |
Diving Behavior of Mirounga leonina: A Functional Data Analysis Approach |
title_fullStr |
Diving Behavior of Mirounga leonina: A Functional Data Analysis Approach |
title_full_unstemmed |
Diving Behavior of Mirounga leonina: A Functional Data Analysis Approach |
title_sort |
diving behavior of mirounga leonina: a functional data analysis approach |
publisher |
Frontiers Media S.A. |
publishDate |
2020 |
url |
https://doi.org/10.3389/fmars.2020.00595 https://doaj.org/article/db6ed893d13b4b83a23050aaeaa2165f |
genre |
Elephant Seals Mirounga leonina Southern Elephant Seals |
genre_facet |
Elephant Seals Mirounga leonina Southern Elephant Seals |
op_source |
Frontiers in Marine Science, Vol 7 (2020) |
op_relation |
https://www.frontiersin.org/article/10.3389/fmars.2020.00595/full https://doaj.org/toc/2296-7745 2296-7745 doi:10.3389/fmars.2020.00595 https://doaj.org/article/db6ed893d13b4b83a23050aaeaa2165f |
op_doi |
https://doi.org/10.3389/fmars.2020.00595 |
container_title |
Frontiers in Marine Science |
container_volume |
7 |
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1766401544064860160 |