When you get involved in the fisheries management process,
and attend the meetings and read what’s in the press, it doesn’t take long to
realize that, regardless of the species, there are a few common themes:
“The scientists just don’t know where to find the fish, there are plenty of them around.”
“There are lots of fish, they just went somewhere else.”
“The fishermen aren’t the reason that the fish are disappearing, it’s the seals (or the sharks, or the bluefish, or the cormorants, or…)”
And then there is the most common theme of all, used mostly when a stock is in decline and restrictions are needed, but also when folks want to see landings increase:
“There are more fish than ever before!”
The nice thing about most of those assertions—from the point
of view of the person making the claim—is that they pretty well stand on their
own, without the need for any supporting facts.
After all, unless you fit a few hundred bluefish with satellite tags—an economically
impractical project—you can’t prove, beyond a shadow of a doubt, that most of
the bluefish on the East Coast didn’t suddenly decide to set off across the
Atlantic to visit North Africa, as a New York party boat captain suggested at a
hearing a few years ago, and that the population wasn’t really overfished, as
the stock assessment advised. It might
seem very unlikely, but…
In the same way, fishermen can claim that the loss of winter
flounder wasn’t due to overharvest, but from cormorants eating the juvenile
fish, while Maryland waterman can argue that the decline in blue crab abundance
was due to striped bass, and not to themselves.
But when it comes down to the “more fish than ever before”
claims, things get a little trickier, because there are historical records. But that never stops such claims from being
made.
“Every local angler I talk to says that there are more red
snapper in the South Atlantic than they’ve ever seen before.”
We can take that statement at face value, and accept that it accurately reflects what anglers are telling Rep. Rutherford. But beyond that, what does it really mean?
In the context of the press release, Rep.
Rutherford was using it as an argument to liberalize recreational red snapper
regulations, and extend what he called the “measly” two-day season. Yet, even if every angler “says
that there are more red snapper…than they’ve ever seen before,” does that mean
that the stock is truly healty?
Not
according to the last stock assessment, which was released in 2023. That assessment states that
“the stock remains overfished SSB/SSB30%=0.44, and…overfishing
is occurring F/F30%=2.20, though at a lower rate than in terminal years
of previous red snapper assessments…This assessment estimated that, since 2010,
total abundance and spawning stock have been increasing at a relatively rapid
rate, showing substantial progress toward rebuilding. Despite overfishing, this increase in
abundance has been stimulated by higher than average recruitment. [emphasis added]”
Thus, we seem to be faced with two contradictory
statements. On one hand, the stock
assessment finds that South Atlantic red snapper remain overfished. On the other, anglers are “seeing more red
snapper…than they’ve ever seen before.”
How can both statements be true?
“The assessment indicates that the stock has been overfished
since 1960,”
and includes a graph depicting a spawning stock that fell to
very low levels in the early 1970s, bottomed out in 1980, and remained at or
near historic low levels through at least 2006.
The same assessment notes that
“overfishing has been occurring since 1960 at about 14 times
the sustainable level, with the 2006 estimate of F/F40% at 12.021… [note that the fishing mortality target has
changed since the 2008 assessment, and now contemplates F30%, a
higher level of fishing mortality]
”Estimated abundance-at-age shows truncation of the oldest
ages from the 1950s into the 1960s; the age structure continues to be in a truncated
condition. Fish of age 10 and above are practically
non-existent in the population.
“…Total biomass and spawning biomass show nearly identical
trends—sharp decline during the 1950s and 1960s, continued decline during the
1970s, and stable but low levels since 1980.”
Thus, for an angler to have seen—to have fished on and experienced—a South
Atlantic red snapper stock that was not overfished, that angler
would probably have to be at least 75 years old, old enough to have been catching
red snapper in the late 1950s. And even
then, that angler would not be old enough to have fished on a truly healthy red
snapper stock, but merely one which was already declining toward overfished
levels.
It is very possible that no one fishing today has ever
fished on a completely healthy red snapper stock, with both adequate biomass
and a wide range of age and size classes.
Instead, most of today’s red snapper anglers probably began fishing after 1980, when spawning stock biomass was at or near its nadir—somewhere around, or
below, three percent of an unfished stock.
To such anglers, the current spawning stock biomass, which
has been increasing in recent years, really does represent “more red snapper
than they’ve ever seen before,” because their fishing experience only included
years when the spawning stock biomass was dismally low. Now,
spawning stock biomass is the highest it’s been since 1980, and there are some
older and larger fish being caught.
To a starving man, a burger can seem like a banquet, and
that’s what the South Atlantic red snapper fishermen are experiencing
today. They are seeing more red snapper
than they’ve ever seen before, and because they never experienced true
abundance, they believe that current abundance reflects a healthy stock.
They are wrong.
And that’s why saying that anglers are seeing “more red
snapper…than they’ve ever seen before,” is an all but meaningless statement,
for it says nothing about how many red snapper the same anglers might see if managers only brought overfishing under control, and fully rebuilt the stock.
Such meaningless comments aren’t limited to South Atlantic
red snapper.
“I’ve been fishing for 50 years, so I should know a little
about it. The [flounder fishing this year]
was the best I’ve seen.”
“Cod are everywhere, we can’t avoid them.”
At least in the case of South Atlantic red snapper, some
anglers, used to a stock near historically low levels, might be misled by the ongoing recovery of such long-overfished stock, and
actually believe that the stock is fully rebuilt.
But in the case of southern flounder and cod—and of other species that I
haven’t bothered to include here, including striped bass—the stock is clearly in
truly bad shape, yet people still try to play the “most ever” card.
Everyone, including themselves, know that it’s not true, yet
they say it all the same.
One factor that might help, the south Atlantic councils own citizen science program has been digitizing and analyzing dock photos from the 1940s through the 1980s. And what they have found, clearly, is that the catch compositions look nothing like they did back then. The fish are MUCH smaller now. https://safmc.net/citizen-science/fishstory/
ReplyDeleteVery true. Thanks.
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