Classifying grey seal behaviour in relation to environmental variability and commercial fishing activity - a multivariate hidden Markov model

Floris van Beest*, Sina Mews, Svenja Elkenkamp, Patrick Schuhmann, Dorian Tsolak, Till Wobbe, Valerio Bartolino, Francois Bastardie, Rune Dietz, Christian von Dorrien, Anders Galatius, Olle Karlsson, Bernie McConnell, Jacob Nabe-Nielsen, Morten Tange Olsen, Jonas Teilmann, Roland Langrock

*Corresponding author for this work

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Abstract

Classifying movement behaviour of marine predators in relation to anthropogenic activity and environmental conditions is important to guide marine conservation. We studied the relationship between grey seal (Halichoerus grypus) behaviour and environmental variability in the southwestern Baltic Sea where seal-fishery conflicts are increasing. We used multiple environmental covariates and proximity to active fishing nets within a multivariate hidden Markov model (HMM) to quantify changes in movement behaviour of grey seals while at sea. Dive depth, dive duration, surface duration, horizontal displacement, and turning angle were used to identify travelling, resting and foraging states. The likelihood of seals foraging increased in deeper, colder, more saline waters, which are sites with increased primary productivity and possibly prey densities. Proximity to active fishing net also had a pronounced effect on state occupancy. The probability of seals foraging was highest
Original languageEnglish
Article number5642
JournalScientific Reports
Volume9
ISSN2045-2322
DOIs
Publication statusPublished - 2019

Cite this

van Beest, Floris ; Mews, Sina ; Elkenkamp, Svenja ; Schuhmann, Patrick ; Tsolak, Dorian ; Wobbe, Till ; Bartolino, Valerio ; Bastardie, Francois ; Dietz, Rune ; von Dorrien, Christian ; Galatius, Anders ; Karlsson, Olle ; McConnell, Bernie ; Nabe-Nielsen, Jacob ; Tange Olsen, Morten ; Teilmann, Jonas ; Langrock, Roland. / Classifying grey seal behaviour in relation to environmental variability and commercial fishing activity - a multivariate hidden Markov model. In: Scientific Reports. 2019 ; Vol. 9.
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title = "Classifying grey seal behaviour in relation to environmental variability and commercial fishing activity - a multivariate hidden Markov model",
abstract = "Classifying movement behaviour of marine predators in relation to anthropogenic activity and environmental conditions is important to guide marine conservation. We studied the relationship between grey seal (Halichoerus grypus) behaviour and environmental variability in the southwestern Baltic Sea where seal-fishery conflicts are increasing. We used multiple environmental covariates and proximity to active fishing nets within a multivariate hidden Markov model (HMM) to quantify changes in movement behaviour of grey seals while at sea. Dive depth, dive duration, surface duration, horizontal displacement, and turning angle were used to identify travelling, resting and foraging states. The likelihood of seals foraging increased in deeper, colder, more saline waters, which are sites with increased primary productivity and possibly prey densities. Proximity to active fishing net also had a pronounced effect on state occupancy. The probability of seals foraging was highest",
author = "{van Beest}, Floris and Sina Mews and Svenja Elkenkamp and Patrick Schuhmann and Dorian Tsolak and Till Wobbe and Valerio Bartolino and Francois Bastardie and Rune Dietz and {von Dorrien}, Christian and Anders Galatius and Olle Karlsson and Bernie McConnell and Jacob Nabe-Nielsen and {Tange Olsen}, Morten and Jonas Teilmann and Roland Langrock",
year = "2019",
doi = "10.1038/s41598-019-42109-w",
language = "English",
volume = "9",
journal = "Scientific Reports",
issn = "2045-2322",
publisher = "Nature Publishing Group",

}

van Beest, F, Mews, S, Elkenkamp, S, Schuhmann, P, Tsolak, D, Wobbe, T, Bartolino, V, Bastardie, F, Dietz, R, von Dorrien, C, Galatius, A, Karlsson, O, McConnell, B, Nabe-Nielsen, J, Tange Olsen, M, Teilmann, J & Langrock, R 2019, 'Classifying grey seal behaviour in relation to environmental variability and commercial fishing activity - a multivariate hidden Markov model', Scientific Reports, vol. 9, 5642. https://doi.org/10.1038/s41598-019-42109-w

Classifying grey seal behaviour in relation to environmental variability and commercial fishing activity - a multivariate hidden Markov model. / van Beest, Floris; Mews, Sina; Elkenkamp, Svenja; Schuhmann, Patrick; Tsolak, Dorian; Wobbe, Till; Bartolino, Valerio; Bastardie, Francois; Dietz, Rune; von Dorrien, Christian; Galatius, Anders; Karlsson, Olle; McConnell, Bernie; Nabe-Nielsen, Jacob; Tange Olsen, Morten; Teilmann, Jonas; Langrock, Roland.

In: Scientific Reports, Vol. 9, 5642, 2019.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Classifying grey seal behaviour in relation to environmental variability and commercial fishing activity - a multivariate hidden Markov model

AU - van Beest, Floris

AU - Mews, Sina

AU - Elkenkamp, Svenja

AU - Schuhmann, Patrick

AU - Tsolak, Dorian

AU - Wobbe, Till

AU - Bartolino, Valerio

AU - Bastardie, Francois

AU - Dietz, Rune

AU - von Dorrien, Christian

AU - Galatius, Anders

AU - Karlsson, Olle

AU - McConnell, Bernie

AU - Nabe-Nielsen, Jacob

AU - Tange Olsen, Morten

AU - Teilmann, Jonas

AU - Langrock, Roland

PY - 2019

Y1 - 2019

N2 - Classifying movement behaviour of marine predators in relation to anthropogenic activity and environmental conditions is important to guide marine conservation. We studied the relationship between grey seal (Halichoerus grypus) behaviour and environmental variability in the southwestern Baltic Sea where seal-fishery conflicts are increasing. We used multiple environmental covariates and proximity to active fishing nets within a multivariate hidden Markov model (HMM) to quantify changes in movement behaviour of grey seals while at sea. Dive depth, dive duration, surface duration, horizontal displacement, and turning angle were used to identify travelling, resting and foraging states. The likelihood of seals foraging increased in deeper, colder, more saline waters, which are sites with increased primary productivity and possibly prey densities. Proximity to active fishing net also had a pronounced effect on state occupancy. The probability of seals foraging was highest

AB - Classifying movement behaviour of marine predators in relation to anthropogenic activity and environmental conditions is important to guide marine conservation. We studied the relationship between grey seal (Halichoerus grypus) behaviour and environmental variability in the southwestern Baltic Sea where seal-fishery conflicts are increasing. We used multiple environmental covariates and proximity to active fishing nets within a multivariate hidden Markov model (HMM) to quantify changes in movement behaviour of grey seals while at sea. Dive depth, dive duration, surface duration, horizontal displacement, and turning angle were used to identify travelling, resting and foraging states. The likelihood of seals foraging increased in deeper, colder, more saline waters, which are sites with increased primary productivity and possibly prey densities. Proximity to active fishing net also had a pronounced effect on state occupancy. The probability of seals foraging was highest

U2 - 10.1038/s41598-019-42109-w

DO - 10.1038/s41598-019-42109-w

M3 - Journal article

VL - 9

JO - Scientific Reports

JF - Scientific Reports

SN - 2045-2322

M1 - 5642

ER -