Below is the graph for the Red Feather deer herd CWD prevalence. The document states:
"Prevalence in the Red Feather/Poudre Canyon
deer herd (D-04) has declined in the decade since CPW
applied focal culling and increased harvest in the early
2000s."
I may be reading the graph wrong, but here's my interpretation.
They were pounding the piss out of bucks and harvesting few does before discovering CWD. Once discovered, they greatly reduced buck harvest and increased doe harvest, because hey, disease transmission is often density dependent, and wildlife managers know that to reduce a population (density), you harvest females. So they increase doe harvest for 5 years or so and then reduce it again, all the while keeping buck harvest much lower than it had been prior to CWD. The prevalence of CWD stayed fairly constant, until it nosedives at a point when doe harvest has pretty much been reduced to pre-CWD levels. It's not clear from the limited data here if this drop in prevalence can be explained by something like a small sample size. It would be interesting to know when they stopped mandatory testing in this herd.
Happy to hear other interpretations if I'm off base.
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