Population Growth Rates of Reef Sharks on the Great Barrier Reef
Author Information
Author(s): Hisano Mizue, Connolly Sean R., Robbins William D.
Primary Institution: James Cook University
Hypothesis
Reef shark populations are declining rapidly due to fishing.
Conclusion
The study found that reef shark populations are declining rapidly, highlighting the need for management actions to reduce fishing mortality.
Supporting Evidence
- Estimates of population growth rates indicate significant declines in reef shark populations.
- Multiple models produced consistent estimates of natural and total mortality rates.
- Consensus estimates support the conclusion that fishing is a major threat to reef sharks.
Takeaway
This study shows that reef sharks are getting fewer because of fishing, and we need to help them by catching less.
Methodology
The study used multiple indirect methods to estimate mortality rates and population growth rates of two reef shark species.
Potential Biases
Potential biases from using catch data and assumptions about population dynamics.
Limitations
The study's estimates are based on indirect methods, which may introduce uncertainties.
Participant Demographics
The study focused on two species of reef sharks: the grey reef shark and the whitetip reef shark.
Statistical Information
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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