Show simple item record Schlägel, Ulrike E. Merrill, Evelyn H. Lewis, Mark A.
dc.coverage.spatial Alberta
dc.coverage.spatial Canada 2017-09-12T20:39:59Z 2017-09-12T20:39:59Z 2017-09-10
dc.identifier doi:10.5061/dryad.2j125
dc.identifier.citation Schlägel UE, Merrill EH, Lewis MA (2017) Territory surveillance and prey management: wolves keep track of space and time. Ecology and Evolution 7(20): 8388-8405.
dc.identifier.issn 2045-7758
dc.description Identifying behavioral mechanisms that underlie observed movement patterns is difficult when animals employ sophisticated cognitive-based strategies. Such strategies may arise when timing of return visits is important, for instance to allow for resource renewal or territorial patrolling. We fitted spatially explicit random-walk models to GPS movement data of six wolves (Canis lupus; Linnaeus, 1758) from Alberta, Canada to investigate the importance of the following: (1) territorial surveillance likely related to renewal of scent marks along territorial edges, to reduce intraspecific risk among packs, and (2) delay in return to recently hunted areas, which may be related to anti-predator responses of prey under varying prey densities. The movement models incorporated the spatiotemporal variable “time since last visit,” which acts as a wolf's memory index of its travel history and is integrated into the movement decision along with its position in relation to territory boundaries and information on local prey densities. We used a model selection framework to test hypotheses about the combined importance of these variables in wolf movement strategies. Time-dependent movement for territory surveillance was supported by all wolf movement tracks. Wolves generally avoided territory edges, but this avoidance was reduced as time since last visit increased. Time-dependent prey management was weak except in one wolf. This wolf selected locations with longer time since last visit and lower prey density, which led to a longer delay in revisiting high prey density sites. Our study shows that we can use spatially explicit random walks to identify behavioral strategies that merge environmental information and explicit spatiotemporal information on past movements (i.e., “when” and “where”) to make movement decisions. The approach allows us to better understand cognition-based movement in relation to dynamic environments and resources.
dc.relation.haspart doi:10.5061/dryad.2j125/1
dc.relation.isreferencedby doi:10.1002/ece3.3176
dc.subject animal movement
dc.subject territoriality
dc.subject predator-prey
dc.subject GPS
dc.title Data from: Territory surveillance and prey management: wolves keep track of space and time
dc.type Article
dwc.ScientificName Canis lupus
dc.contributor.correspondingAuthor Schlägel, Ulrike E.
prism.publicationName Ecology and Evolution

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Title Wolf location data
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Description GPS location data for the 6 wolves analysed in the paper. First column contains wolf IDs. Second and third columns contain observed easting and northing coordinates. Fourth and fifth column contain date and time associated with each location.
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