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dc.contributor.authorDupont, Gates
dc.contributor.authorLinden, Daniel W
dc.contributor.authorSutherland, Chris
dc.identifier.citationDupont , G , Linden , D W & Sutherland , C 2021 , ' Improved inferences about landscape connectivity from spatial capture–recapture by integration of a movement model ' , Ecology , vol. Early View , e03544 .
dc.identifier.otherPURE: 276241779
dc.identifier.otherPURE UUID: 22529d68-5ab3-43a7-8f6c-bcd1040c2235
dc.identifier.otherORCID: /0000-0003-2073-1751/work/103138142
dc.identifier.otherScopus: 85118860981
dc.identifier.otherWOS: 000716397900001
dc.description.abstractUnderstanding how broad-scale patterns in animal populations emerge from individual-level processes is an enduring challenge in ecology that requires investigation at multiple scales and perspectives. Complementary to this need for diverse approaches is the recent focus on integrated modeling in statistical ecology. Population-level processes represent the core of spatial capture–recapture (SCR), with many methodological extensions that have been motivated by standing ecological theory and data integration opportunities. The extent to which these recent advances offer inferential improvements can be limited by the data requirements for quantifying individual-level processes. This is especially true for SCR models that use non-Euclidean distance to relax the restrictive assumption that individual space use is stationary and symmetrical in order to make inferences about landscape connectivity. To meet the challenges of scale and data quality, we propose integrating an explicit movement model with non-Euclidean SCR for joint estimation of a shared cost parameter between individual and population processes. Here, we define a movement kernel for step selection that uses “ecological distance” instead of Euclidean distance to quantify availability for each movement step in terms of landscape cost. We compare performance of our integrated model to that of existing SCR models using realistic animal movement simulations and data collected on black bears. We demonstrate that an integrated approach offers improvements both in terms of bias and precision in estimating the shared cost parameter over models fit to spatial encounters alone. Simulations suggest these gains were only realized when step lengths were small relative to home range size, and estimates of density were insensitive to whether or not an integrated approach was used. By combining the fine spatiotemporal scale of individual movement processes with the estimation of population density in SCR, integrated approaches such as the one we develop here have the potential to unify the fields of movement, population, and landscape ecology and improve our understanding of landscape connectivity.
dc.rightsCopyright © 2021 The Authors. Ecology published by Wiley Periodicals LLC on behalf of Ecological Society of America. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.en
dc.subjectAnimal movementen
dc.subjectCost functionen
dc.subjectData integrationen
dc.subjectSpatial capture-recaptureen
dc.subjectQA Mathematicsen
dc.subjectQH301 Biologyen
dc.titleImproved inferences about landscape connectivity from spatial capture–recapture by integration of a movement modelen
dc.typeJournal articleen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews.Statisticsen
dc.description.statusPeer revieweden

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