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- W2151369401 abstract "MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout the JournalEditorsTheme Sections MEPS 372:253-264 (2008) - DOI: https://doi.org/10.3354/meps07706 Migration of an upper trophic level predator, the salmon shark Lamna ditropis, between distant ecoregions Kevin C. Weng1,3,*, David G. Foley2, James E. Ganong1, Christopher Perle1, George L. Shillinger1, Barbara A. Block1 1Hopkins Marine Station, Stanford University, Pacific Grove, California 93950 USA 2Environmental Research Division, NOAA Fisheries Service, Pacific Grove, California 93950, USA 3Present address: School of Ocean and Earth Science and Technology, University of Hawaii at Manoa, Honolulu, Hawaii 96822, USA *Email: kevincmweng@gmail.com ABSTRACT: Knowledge of how animals move through heterogeneous environments is essential to understanding the ecological functions they fulfill in each habitat and their responses to environmental change. Upper trophic level organisms exert structural influences through the food web, so information on their range, migration and foraging strategy is necessary to understanding ecosystem function. Recent technological advances have enabled researchers to follow individual animals over seasonal and multi-year timescales, revealing long-distance migrations in a variety of taxa. We used satellite telemetry to monitor female salmon sharks Lamna ditropis and remote sensing to characterize their environment. Salmon sharks ranged throughout the entire eastern North Pacific Ocean during a seasonal migration cycle. During long-distance migrations, quantitative movement analyses of speed, path straightness and first passage time (FPT) revealed area-restricted search (ARS) behaviors in northern and southern regions, with transiting behaviors at mid-latitudes. Individuals migrating to a highly productive southern region displayed more ARS behaviors than those moving to a low productivity region. The combination of multi-year time-series of animal behavior with synoptic environmental data reveals factors influencing migration and indicates that different life history functions are fulfilled in each habitat. KEY WORDS: Migration · Behavior · Habitat selection · Landscape ecology · Oceanography · Foraging behavior · Reproduction · Elasmobranch · Lamna ditropis Full text in pdf format Supplementary appendix PreviousNextCite this article as: Weng KC, Foley DG, Ganong JE, Perle C, Shillinger GL, Block BA (2008) Migration of an upper trophic level predator, the salmon shark Lamna ditropis, between distant ecoregions. Mar Ecol Prog Ser 372:253-264. https://doi.org/10.3354/meps07706Export citation RSS - Facebook - Tweet - linkedIn Cited by Published in MEPS Vol. 372. Online publication date: December 09, 2008 Print ISSN: 0171-8630; Online ISSN: 1616-1599 Copyright © 2008 Inter-Research." @default.
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- W2151369401 title "Migration of an upper trophic level predator, the salmon shark Lamna ditropis, between distant ecoregions" @default.
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