Only on the Coosa chain of impoundments, and I don't think it has very much or anything to do with Alabama Bass in particular.
They laid out the data from a very extensive multi year study. These lakes get absolutely hammered by derbies. The study finds that larger, older females are disproportionately negatively affected. The mortality figures were quite alarming to me when reading them.
I fully support this proposal, and I think the biggest impact it would have would actually be on larger female LMB.
we funded a three-year research project to examine the impact of bass tournaments and mortality of Largemouth Bass and Alabama Bass on Neely Henry Reservoir near Gadsden. Research findings estimate that a total of 45% of bass weighed in during tournaments suffered pre- and/or post-release mortality, with mortality rates potentially ranging from 50 – 80% during hot weather. Additionally, females are disproportionally selected by tournament anglers because they are heavier than males, and because the maximum size of males is generally limited to about 18-inches (≈3 pounds). Research indicates that tournament participants weighed in 50% more females than males, with this disparity being greatest among bass older than Age-6, where nearly 70% of all bass weighed in during tournaments were females. Female survival is essential to the continuation of the fishery, yet female bass suffer higher rates of tournament mortality.
The Coosa River reservoirs are small, and more vulnerable to the effects of tournament mortality. They cannot support the tournament pressure that larger reservoirs receive. Research also indicates that recreational anglers’ harvest is responsible for a negligible amount of the total annual mortality, and that regulations related to recreational angling would not result in noticeable improvements in the quality of these fisheries.
In an effort to eventually restore the trophy Alabama Bass fishery in the Coosa River reservoirs, a tournament-only slot limit is being considered in order to significantly improve bass size structure over time. Research suggests that a 14-inch to 20-inch protective slot limit for all black bass during any tournaments utilizing live weigh-ins on all six (6) Coosa River Reservoirs (Weiss, Neely Henry, Logan Martin, Lay, Mitchell, and Jordan) is a sound management step to address concerns related to the resource and to lead to higher quality angling opportunities in the future. This consideration of a protective slot limit for tournaments is intended to conserve and improve the resource for future angling, to include higher quality tournament experiences.