Effects of Human-Caused Deaths on Red Wolf Populations
Author Information
Author(s): Amanda M. Sparkman, Lisette P. Waits, Dennis L. Murray
Primary Institution: Trent University
Hypothesis
Does anthropogenic mortality have additive or compensatory effects on red wolf population dynamics?
Conclusion
Anthropogenic mortality has strong additive effects on red wolf survival and population growth, particularly at low population densities.
Supporting Evidence
- Anthropogenic mortality was found to be additive to natural mortality.
- Higher levels of anthropogenic mortality resulted in lower annual survival rates.
- Packs that disbanded after losing a breeder had fewer pups than stable packs.
- Population growth rates were negatively impacted by increased anthropogenic mortality.
- Compensatory responses were not observed in the short term.
Takeaway
When humans cause deaths in red wolves, it makes it harder for the population to grow, especially when there aren't many wolves around.
Methodology
Analyzed long-term data on a reintroduced population of red wolves to assess the effects of anthropogenic mortality on survival and population growth.
Potential Biases
Potential bias due to reliance on telemetry data and the exclusion of certain mortality events.
Limitations
The study was limited to a single population of red wolves, which may not represent other populations.
Participant Demographics
The study focused on a reintroduced population of red wolves in North Carolina.
Statistical Information
P-Value
<0.0001
Confidence Interval
−1.77 (−3.03, −0.51)
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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