Hale Whales: Target reproduction numbers and sensitivity analysis for Resident Killer Whales

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dc.contributor.authorHobson, Bronwyn
dc.date.accessioned2021-08-10T22:41:29Z
dc.date.available2021-08-10T22:41:29Z
dc.date.copyright2021en_US
dc.date.issued2021-08-10
dc.description.abstractWe used two existing population projection matrix models of female resident killer whales (Orcinus orca), the target reproduction number framework developed by Lewis et al.in 2019, and sensitivity analysis to determine target reproduction numbers and identify key parameter values to aid in population recovery strategies. From the earliest model, proposed by Brault and Caswell in 1993, we determined the net reproductive value for the combined Northern and Southern resident killer whale (NRKW and SRKW) populations from 1973-1987 to be R0 = 2.01. We also determined closed form and numerical expressions for target reproduction numbers targeting survival probabilities for the first three life stages of the model. For the most recent model, proposed by Vélez-Espino et al.(2014),using data from 1987-2011, we found the net reproductive value for the SRKW population to be R0 = 1.41. After performing a sensitivity analysis on each net reproductive value (R0), we found that survival probabilities of juveniles and reproductive females were key population parameters to aid in population growth and recovery.en_US
dc.description.reviewstatusRevieweden_US
dc.description.scholarlevelUndergraduateen_US
dc.description.sponsorshipJamie Cassels Undergraduate Research Awards (JCURA)en_US
dc.identifier.urihttp://hdl.handle.net/1828/13233
dc.language.isoenen_US
dc.subjecttarget reproduction numbersen_US
dc.subjectOrcinus Orcaen_US
dc.subjectmatrix population modelen_US
dc.subjectLefkovitch modelen_US
dc.subjectsensitivity analysisen_US
dc.subjectnet reproductive valueen_US
dc.titleHale Whales: Target reproduction numbers and sensitivity analysis for Resident Killer Whalesen_US
dc.typePosteren_US

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