OK, maybe many of you are not aware how the YOY studies are done and what they do/don't say.
They are done in the late fall seining multiple times in multiple locations of the nursery, looking for the fish from that spring's spawn. The numbers reported are the average of all these data. Below is how MD does the study, and for those of you that wonder about the possibility that the fish are hanging out elsewhere, they did a sanity check this year which is presented below with my emphasis.
- MD Survey Method: Since the 1950s, DNR has used 100-foot seine nets to sample 22 sites in key spawning areas: Choptank, Nanticoke, Potomac rivers, and the Upper Chesapeake Bay.
During this annual survey, fishery managers sample 22 sites located in four major striped bass spawning areas: the Choptank, Nanticoke, and Potomac rivers, and the upper Chesapeake Bay. Biologists visit each site three times per summer, collecting fish with two sweeps of a 100-foot beach seine net. The index represents the average number of 3-inch or less juvenile striped bass caught in each sweep of the net.
Similar fish surveys were conducted this summer in the Patapsco, Magothy, Severn, Rhode, West, and Tred Avon rivers, and St. Clements and Breton bays. Those surveys, which were conducted outside the annual survey locations, found even fewer young-of-year striped bass.
MD has run the studies since the 1950s. I'm not sure if NY did it prior to 1983, and I think VA is the close to or the same as MD. I have no idea for NJ.
Since the surveys are done in the fall and just look for juvenile fish, the data represents how many little stripers there are.
It does not:
- Tell us how many adult fish were in the spawning area
- Tell us how many eggs were laid nor how many eggs hatched
- Tell us how many hatchlings perished over the summer by predation, starvation or environmental issues
- It just tells us the abundance of Year Old Striped Bass in a particular year, and can be evaluated against the historical results
If any of you can suggest a better or more complete study to figure out how many striped bass spawn in a particular striper nursery let's hear it. Regardless, I'll bet if you, like me, measure every striped bass you catch and record the data, you will see that the average size fish you've caught over the past 5 years has gone up, and you've seen far less small (young) fish. Personally I haven't caught less than a 20" fish in 3 seasons, when in prior seasons that would be my average sized fish. Therefore it's a fact that few, if any smaller fish are in the striped bass population and these YOY studies provide accurate data.
Some of you may say that "I've heard that there are fish spawning in another area not surveyed". If you could provide the name of the river with a confirmatory state from that state's fisheries organization, GREAT!! So far none of these "I've heard..." comments has been confirmed. You must also keep in mind that 80-90%of our striped bass come from the Chesapeake Watershed with the remainder from the Hudson watershed. So if there is anything more than trivial spawn from other rivers, it would have been witnessed and confirmed by state organizations. Look at Maine, the Kennebec River had a very strong spawning population which crashed in the 70s, and there was a transfer of a good number of Hudson River fish which did reestablish a spawn that went pretty well for maybe 20 years, but that has seemed to be disappear. I haven't seen any data on that in 4 or so years.