Last week, Libby introduced catch share programs, shared their pros and cons, and briefly outlined existing programs in the Chesapeake Bay region. As a continuation of her previous report, using data from NOAA and the Environmental Defense Fund, she graphed Virginia and Maryland fish landings for several species over a ten-to-twelve-year period. The data for these fish- striped bass, black sea bass, and summer flounder- shows numbers for fish landings both five-to-six years before a catch share program was implemented in each state for each species, and the five years following.
In her former piece, Libby stated that populations of striped bass in the Chesapeake had risen since catch share programs were implemented in Virginia and Maryland. Our first graph for striped bass landings in Virginia (1992 -2004) seems to correlate. Since catch share programs for striped bass were implemented in the Chesapeake region in 1998, both populations and fish landings (in metric tons) for striped bass have increased.
Catch sharing was implemented in Maryland for summer flounder in 2005. The immediate year after implementation, landings decreased, but for the next four years, landings followed an upward trend. It would seem that the catch share program has had a positive impact on harvests for the summer flounder.
Catch share programs do not seem to be having a positive effect on all Chesapeake finfish species, however – at least in terms of harvest numbers. Fish landings for black sea bass (1998-2010) decreased in both Virginia and Maryland after catch share programs were implemented in both states in 2004. It is difficult to tell if catch sharing has been a significant cause for this decline. Landings were decreasing prior to 2004, and continued to do so afterwards. It could be that a combination of factors contributed to a decline in black sea bass landings.