Counting the Uncountable Presentation PDF
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University of Reading
Dylan
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Summary
This presentation details the German Tank problem and explores methods for counting the uncountable, focusing on estimating population sizes and discussing the complexities of mark-recapture models in animal populations. It also includes past estimates of populations.
Full Transcript
Counting the Uncountable DYLAN SUPERVISORS: GREG DISTILLER, RES ALTWEGG, IRION ALISON KOCK Eduardo Lopez Negrete, National Geographic Photo of the Day The German Tank Problem The German Tank Problem The German Tank Pro...
Counting the Uncountable DYLAN SUPERVISORS: GREG DISTILLER, RES ALTWEGG, IRION ALISON KOCK Eduardo Lopez Negrete, National Geographic Photo of the Day The German Tank Problem The German Tank Problem The German Tank Problem The German Tank Problem The German Tank 3 11 24 Problem Neat! Poroderma pantherinum N = 156 N = 156 N = 156 m = 21 N = 156 m = 21 N = 156 m = 21 35(5) N = 156 m = 21 = 147 Neat! 35(5) Past Estimates (timelines) 303 (723) Hewitt (2014) 261 (389) Ryklief (2012) 426 (438) Andreotti et al. (2016) 532 (908) Towner et al. (2013) 16 13 17 15 14 12 01 02 00 97 99 11 04 03 98 06 07 10 09 05 08 20 20 20 20 20 20 20 20 20 20 20 20 20 19 20 19 20 20 19 20 20 Transience & Survival Migrating sharks pose issues to Mark- Recapture models ◦ Differing detectability! We can account for this, but… ◦ Need to assume equal survival Is that always the case? ◦ Reproduction? ◦ Encountering human activity Acknowledgements
