When to be discrete: the importance of time formulation in understanding animal movement
Animal movement is essential to our understanding of population dynamics, animal behavior, and the impacts of global change. Coupled with high-resolution biotelemetry data, exciting new inferences about animal movement have been facilitated by various specifications of contemporary models. These app...
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ftconicet:oai:ri.conicet.gov.ar:11336/11821 2023-10-09T21:56:31+02:00 When to be discrete: the importance of time formulation in understanding animal movement McClintock, Brett T. Johnson, Devin S. Hooten, Mevin B. Ver Hoef, Jay M. Morales, Juan Manuel application/pdf http://hdl.handle.net/11336/11821 eng eng BioMed Central info:eu-repo/semantics/altIdentifier/url/https://movementecologyjournal.biomedcentral.com/articles/10.1186/s40462-014-0021-6 info:eu-repo/semantics/altIdentifier/doi/10.1186/s40462-014-0021-6 info:eu-repo/semantics/altIdentifier/url/https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/25709830/ http://hdl.handle.net/11336/11821 McClintock, Brett T.; Johnson, Devin S.; Hooten, Mevin B.; Ver Hoef, Jay M.; Morales, Juan Manuel; When to be discrete: the importance of time formulation in understanding animal movement; BioMed Central; Movement Ecology; 2; 21; 9-2014; 1-11 2051-3933 info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ ANIMAL LOCATION DATA DIFFUSION MOVEMENT MODEL RANDOM WALK https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion ftconicet https://doi.org/10.1186/s40462-014-0021-6 2023-09-24T18:50:49Z Animal movement is essential to our understanding of population dynamics, animal behavior, and the impacts of global change. Coupled with high-resolution biotelemetry data, exciting new inferences about animal movement have been facilitated by various specifications of contemporary models. These approaches differ, but most share common themes. One key distinction is whether the underlying movement process is conceptualized in discrete or continuous time. This is perhaps the greatest source of confusion among practitioners, both in terms of implementation and biological interpretation. In general, animal movement occurs in continuous time but we observe it at fixed discrete-time intervals. Thus, continuous time is conceptually and theoretically appealing, but in practice it is perhaps more intuitive to interpret movement in discrete intervals. With an emphasis on state-space models, we explore the differences and similarities between continuous and discrete versions of mechanistic movement models, establish some common terminology, and indicate under which circumstances one form might be preferred over another. Counter to the overly simplistic view that discrete- and continuous-time conceptualizations are merely different means to the same end, we present novel mathematical results revealing hitherto unappreciated consequences of model formulation on inferences about animal movement. Notably, the speed and direction of movement are intrinsically linked in current continuous-time random walk formulations, and this can have important implications when interpreting animal behavior. We illustrate these concepts in the context of state-space models with multiple movement behavior states using northern fur seal (Callorhinus ursinus) biotelemetry data. Fil: McClintock, Brett T. National Marine Mammal Laboratory; Estados Unidos Fil: Johnson, Devin S. National Marine Mammal Laboratory; Estados Unidos Fil: Hooten, Mevin B. State University Of Colorado - Fort Collins; Estados Unidos Fil: Ver Hoef, Jay M. National ... Article in Journal/Newspaper Callorhinus ursinus Northern fur seal CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) McClintock ENVELOPE(157.433,157.433,-80.217,-80.217) Movement Ecology 2 1 |
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Open Polar |
collection |
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) |
op_collection_id |
ftconicet |
language |
English |
topic |
ANIMAL LOCATION DATA DIFFUSION MOVEMENT MODEL RANDOM WALK https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
spellingShingle |
ANIMAL LOCATION DATA DIFFUSION MOVEMENT MODEL RANDOM WALK https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 McClintock, Brett T. Johnson, Devin S. Hooten, Mevin B. Ver Hoef, Jay M. Morales, Juan Manuel When to be discrete: the importance of time formulation in understanding animal movement |
topic_facet |
ANIMAL LOCATION DATA DIFFUSION MOVEMENT MODEL RANDOM WALK https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
description |
Animal movement is essential to our understanding of population dynamics, animal behavior, and the impacts of global change. Coupled with high-resolution biotelemetry data, exciting new inferences about animal movement have been facilitated by various specifications of contemporary models. These approaches differ, but most share common themes. One key distinction is whether the underlying movement process is conceptualized in discrete or continuous time. This is perhaps the greatest source of confusion among practitioners, both in terms of implementation and biological interpretation. In general, animal movement occurs in continuous time but we observe it at fixed discrete-time intervals. Thus, continuous time is conceptually and theoretically appealing, but in practice it is perhaps more intuitive to interpret movement in discrete intervals. With an emphasis on state-space models, we explore the differences and similarities between continuous and discrete versions of mechanistic movement models, establish some common terminology, and indicate under which circumstances one form might be preferred over another. Counter to the overly simplistic view that discrete- and continuous-time conceptualizations are merely different means to the same end, we present novel mathematical results revealing hitherto unappreciated consequences of model formulation on inferences about animal movement. Notably, the speed and direction of movement are intrinsically linked in current continuous-time random walk formulations, and this can have important implications when interpreting animal behavior. We illustrate these concepts in the context of state-space models with multiple movement behavior states using northern fur seal (Callorhinus ursinus) biotelemetry data. Fil: McClintock, Brett T. National Marine Mammal Laboratory; Estados Unidos Fil: Johnson, Devin S. National Marine Mammal Laboratory; Estados Unidos Fil: Hooten, Mevin B. State University Of Colorado - Fort Collins; Estados Unidos Fil: Ver Hoef, Jay M. National ... |
format |
Article in Journal/Newspaper |
author |
McClintock, Brett T. Johnson, Devin S. Hooten, Mevin B. Ver Hoef, Jay M. Morales, Juan Manuel |
author_facet |
McClintock, Brett T. Johnson, Devin S. Hooten, Mevin B. Ver Hoef, Jay M. Morales, Juan Manuel |
author_sort |
McClintock, Brett T. |
title |
When to be discrete: the importance of time formulation in understanding animal movement |
title_short |
When to be discrete: the importance of time formulation in understanding animal movement |
title_full |
When to be discrete: the importance of time formulation in understanding animal movement |
title_fullStr |
When to be discrete: the importance of time formulation in understanding animal movement |
title_full_unstemmed |
When to be discrete: the importance of time formulation in understanding animal movement |
title_sort |
when to be discrete: the importance of time formulation in understanding animal movement |
publisher |
BioMed Central |
url |
http://hdl.handle.net/11336/11821 |
long_lat |
ENVELOPE(157.433,157.433,-80.217,-80.217) |
geographic |
McClintock |
geographic_facet |
McClintock |
genre |
Callorhinus ursinus Northern fur seal |
genre_facet |
Callorhinus ursinus Northern fur seal |
op_relation |
info:eu-repo/semantics/altIdentifier/url/https://movementecologyjournal.biomedcentral.com/articles/10.1186/s40462-014-0021-6 info:eu-repo/semantics/altIdentifier/doi/10.1186/s40462-014-0021-6 info:eu-repo/semantics/altIdentifier/url/https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/25709830/ http://hdl.handle.net/11336/11821 McClintock, Brett T.; Johnson, Devin S.; Hooten, Mevin B.; Ver Hoef, Jay M.; Morales, Juan Manuel; When to be discrete: the importance of time formulation in understanding animal movement; BioMed Central; Movement Ecology; 2; 21; 9-2014; 1-11 2051-3933 |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
op_doi |
https://doi.org/10.1186/s40462-014-0021-6 |
container_title |
Movement Ecology |
container_volume |
2 |
container_issue |
1 |
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1779321329101570048 |