Time and tide: Seasonal, diel and tidal rhythms in Wadden Sea Harbour porpoises (Phocoena phocoena).
Odontocetes have evolved a rich diversity of prey- and habitat-specific foraging strategies, which allows them to feed opportunistically on locally and temporally abundant prey. While habitat-specific foraging strategies have been documented for some odontocete species, this is less known for the ha...
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ftdoajarticles:oai:doaj.org/article:73c9dfa0e2294eb4818b8a6e2a90a651 2023-05-15T16:33:28+02:00 Time and tide: Seasonal, diel and tidal rhythms in Wadden Sea Harbour porpoises (Phocoena phocoena). Beate Zein Benno Woelfing Michael Dähne Tobias Schaffeld Stefan Ludwig Jacob Hansen Rye Johannes Baltzer Andreas Ruser Ursula Siebert 2019-01-01T00:00:00Z https://doi.org/10.1371/journal.pone.0213348 https://doaj.org/article/73c9dfa0e2294eb4818b8a6e2a90a651 EN eng Public Library of Science (PLoS) https://doi.org/10.1371/journal.pone.0213348 https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0213348 https://doaj.org/article/73c9dfa0e2294eb4818b8a6e2a90a651 PLoS ONE, Vol 14, Iss 3, p e0213348 (2019) Medicine R Science Q article 2019 ftdoajarticles https://doi.org/10.1371/journal.pone.0213348 2022-12-31T10:37:49Z Odontocetes have evolved a rich diversity of prey- and habitat-specific foraging strategies, which allows them to feed opportunistically on locally and temporally abundant prey. While habitat-specific foraging strategies have been documented for some odontocete species, this is less known for the harbour porpoise (Phocoena phocoena). We collected multiple years of acoustic data using echolocation click loggers to analyse porpoise occurrence and buzzing behaviour, indicating feeding, in the German Wadden Sea (North Sea). Seasonal, diel and tidal effects were studied using Generalised Estimating Equations (GEE-GAMs). Locally season, time of day and tidal time significantly influenced the probability of porpoise detections and detection of foraging sequences (buzzes). Hunting strategies, and therefore frequency of buzzes, were likely affected by prey distribution and large differences between POD locations indicated that porpoises used highly specific behaviour adapted to tide and time of day to efficiently feed on the available prey. Strong seasonal and spatial variation in diel and tidal effects underline the importance of long-term observations. Studies on porpoise behaviour are often based on short-term observations and might rather reflect a seasonal than a general pattern. The results of this study show clearly that significant changes in porpoise behaviour can be found in short and long-term observations. Here some features are based on short term determinants and others are stable over years and care should be taken about drawing general conclusions based on local patterns. Highly variable spatio-temporal patterns indicate a high flexibility of porpoises in a highly variable environment and address a challenge for complex conservation management plans. Article in Journal/Newspaper Harbour porpoise Phocoena phocoena Directory of Open Access Journals: DOAJ Articles PLOS ONE 14 3 e0213348 |
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Medicine R Science Q Beate Zein Benno Woelfing Michael Dähne Tobias Schaffeld Stefan Ludwig Jacob Hansen Rye Johannes Baltzer Andreas Ruser Ursula Siebert Time and tide: Seasonal, diel and tidal rhythms in Wadden Sea Harbour porpoises (Phocoena phocoena). |
topic_facet |
Medicine R Science Q |
description |
Odontocetes have evolved a rich diversity of prey- and habitat-specific foraging strategies, which allows them to feed opportunistically on locally and temporally abundant prey. While habitat-specific foraging strategies have been documented for some odontocete species, this is less known for the harbour porpoise (Phocoena phocoena). We collected multiple years of acoustic data using echolocation click loggers to analyse porpoise occurrence and buzzing behaviour, indicating feeding, in the German Wadden Sea (North Sea). Seasonal, diel and tidal effects were studied using Generalised Estimating Equations (GEE-GAMs). Locally season, time of day and tidal time significantly influenced the probability of porpoise detections and detection of foraging sequences (buzzes). Hunting strategies, and therefore frequency of buzzes, were likely affected by prey distribution and large differences between POD locations indicated that porpoises used highly specific behaviour adapted to tide and time of day to efficiently feed on the available prey. Strong seasonal and spatial variation in diel and tidal effects underline the importance of long-term observations. Studies on porpoise behaviour are often based on short-term observations and might rather reflect a seasonal than a general pattern. The results of this study show clearly that significant changes in porpoise behaviour can be found in short and long-term observations. Here some features are based on short term determinants and others are stable over years and care should be taken about drawing general conclusions based on local patterns. Highly variable spatio-temporal patterns indicate a high flexibility of porpoises in a highly variable environment and address a challenge for complex conservation management plans. |
format |
Article in Journal/Newspaper |
author |
Beate Zein Benno Woelfing Michael Dähne Tobias Schaffeld Stefan Ludwig Jacob Hansen Rye Johannes Baltzer Andreas Ruser Ursula Siebert |
author_facet |
Beate Zein Benno Woelfing Michael Dähne Tobias Schaffeld Stefan Ludwig Jacob Hansen Rye Johannes Baltzer Andreas Ruser Ursula Siebert |
author_sort |
Beate Zein |
title |
Time and tide: Seasonal, diel and tidal rhythms in Wadden Sea Harbour porpoises (Phocoena phocoena). |
title_short |
Time and tide: Seasonal, diel and tidal rhythms in Wadden Sea Harbour porpoises (Phocoena phocoena). |
title_full |
Time and tide: Seasonal, diel and tidal rhythms in Wadden Sea Harbour porpoises (Phocoena phocoena). |
title_fullStr |
Time and tide: Seasonal, diel and tidal rhythms in Wadden Sea Harbour porpoises (Phocoena phocoena). |
title_full_unstemmed |
Time and tide: Seasonal, diel and tidal rhythms in Wadden Sea Harbour porpoises (Phocoena phocoena). |
title_sort |
time and tide: seasonal, diel and tidal rhythms in wadden sea harbour porpoises (phocoena phocoena). |
publisher |
Public Library of Science (PLoS) |
publishDate |
2019 |
url |
https://doi.org/10.1371/journal.pone.0213348 https://doaj.org/article/73c9dfa0e2294eb4818b8a6e2a90a651 |
genre |
Harbour porpoise Phocoena phocoena |
genre_facet |
Harbour porpoise Phocoena phocoena |
op_source |
PLoS ONE, Vol 14, Iss 3, p e0213348 (2019) |
op_relation |
https://doi.org/10.1371/journal.pone.0213348 https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0213348 https://doaj.org/article/73c9dfa0e2294eb4818b8a6e2a90a651 |
op_doi |
https://doi.org/10.1371/journal.pone.0213348 |
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PLOS ONE |
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14 |
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3 |
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e0213348 |
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1766023152416063488 |