What is it about?
Many mark-recapture studies are conducted on sturgeon that result in low recapture rates. Additionally, several studies declare population increase or recovery without testing for the assumptions of a mark-recapture. In this study, we assess the assumptions of a mark-recapture model on lake sturgeon to determine if they are a suitable species for this technique. We then apply the same approach to a different study that reported a 445% increase in population size over 20+ years.
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Why is it important?
This study identified that the assumptions should be satisfied for a mark-recapture on sturgeon. It also highlighted that violations to these model assumptions could grossly over-estimate population sizes. The impact could be changes in policy or management efforts that reduce (or increases) protected when it isn't warranted.
Read the Original
This page is a summary of: Are we overestimating recovery of sturgeon populations using mark/recapture surveys?, Journal of Applied Ichthyology, September 2018, Wiley, DOI: 10.1111/jai.13795.
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