Modeling Vessel Strike Risks for North Atlantic Right Whales
Author Information
Author(s): Hannah Blondin, Lance P. Garrison, Jeffrey D. Adams, Jason J. Roberts, Caroline P. Good, Meghan P. Gahm, Niki E. Lisi, Eric M. Patterson
Primary Institution: University of Miami
Hypothesis
The study aims to enhance existing vessel strike models by incorporating detailed regional data on vessel traffic and whale behavior to better estimate mortality risk for North Atlantic right whales.
Conclusion
The study found that vessels over 350 feet in length pose the greatest risk to North Atlantic right whales, and reducing vessel speeds can mitigate mortality rates, although some risk remains.
Supporting Evidence
- The model incorporates empirical data on whale avoidance and vessel characteristics.
- It highlights that larger vessels contribute significantly to the mortality risk of right whales.
- The study suggests that reducing vessel speeds can lead to a decrease in whale mortalities.
Takeaway
Big ships can hurt whales, and if they go slower, it can help keep the whales safe, but there's still a chance of accidents.
Methodology
The study used an updated encounter risk model that incorporates whale behavior, vessel traffic data, and mortality probabilities to assess the risk of vessel strikes on right whales.
Potential Biases
There is a potential bias in mortality estimates due to underreporting of vessel strikes, especially involving smaller vessels.
Limitations
The model may not fully capture the risks posed by smaller vessels due to underrepresentation in AIS data and lacks detailed data on whale avoidance behavior.
Participant Demographics
The study focuses on North Atlantic right whales, with an estimated population of 372 individuals remaining.
Statistical Information
Confidence Interval
95% CI: from 360 to 383 individuals
Digital Object Identifier (DOI)
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