11 June 2026
Greetings,
If you have read my blog for the past three years, you will be very familiar with the word ‘Menhaden’, a species of fish that is crucial for ospreys in certain regions of the world. In fact, it is the basis of the ecosystem of The Chesapeake Bay where many species depend on it. But with Omega Protein taking all of the schools of fish through trawling with huge industrial ships and spotter planes, there is nothing left for the birds and marine life. A new study puts the problem squarely on over fishing while many over the years have tried to find other reasons. Politicians in Virginia – which are really holding up the changes since Omega is stationed at Reedsville – even blamed the Bald Eagles for taking all the fish!!!!!!!!! Do they think we are that stupid?
Justin Hawkins wrote on Menhaden – Little Fish, Big Deal a good analysis of what is happening and why Menhaden are so important.
“The Localized Depletion Debate: Can a Healthy Menhaden Stock Still Leave Predators Hungry?
For years, one of the most common responses to concerns about industrial menhaden harvest has been straightforward:
“The stock isn’t overfished.”
According to Atlantic menhaden stock assessments, the species is not currently classified as overfished, and overfishing is not considered to be occurring on a coastwide basis.
To many people, that sounds like the end of the discussion.
But for a growing number of fisheries scientists, conservation groups, and recreational anglers, it may actually be the beginning.
The reason is a concept known as localized depletion.
It is a simple idea that asks a surprisingly complicated question:
Can a fish population be healthy overall while becoming less available in the specific places where predators need it most?
Looking at the Coast From 30,000 Feet
Stock assessments are designed to evaluate fish populations across enormous geographic areas.
For Atlantic menhaden, that means examining the entire Atlantic coast.
Scientists estimate population size, fishing mortality, recruitment, spawning success, and long-term sustainability across a range stretching from New England to Florida.
From that perspective, the species may appear healthy.
But critics argue that broad-scale assessments can sometimes miss what is happening at smaller scales.
After all, predators do not live on a coastwide scale.
A striped bass feeding in the Chesapeake Bay is not utilizing forage fish off Rhode Island.
An osprey nesting on a tributary of the Bay is not hunting schools of menhaden hundreds of miles away.
Predators live locally.
They feed locally.
And they respond to local prey availability.
That distinction lies at the heart of the localized depletion debate.
A Grocery Store Analogy
Imagine a city with one hundred grocery stores.
Ninety-five are fully stocked.
Five are nearly empty.
Looking only at the citywide inventory data, food supplies appear abundant.
But for the residents living near those five stores, availability is a very different story.
Supporters of the localized depletion theory argue that forage fish may function in a similar way.
A coastwide stock assessment can show healthy overall abundance while predators in specific estuaries, bays, or feeding areas experience reduced access to forage.
The fish exist.
The question is whether they exist where they are needed.
Why Chesapeake Bay Became Ground Zero
No area illustrates this debate more clearly than Chesapeake Bay.
The Bay serves as one of the most important nursery and feeding habitats for Atlantic menhaden.
It is also home to striped bass, bluefish, weakfish, dolphins, ospreys, pelicans, and countless other predators that depend directly or indirectly on menhaden.
Historically, the Bay also hosted much of the Atlantic reduction fishery.
For decades, hundreds of millions of pounds of menhaden were harvested annually from this single ecosystem.
Conservation organizations began asking a straightforward question:
If such large quantities of forage are removed from one of the most important feeding areas on the East Coast, can local predators remain unaffected?
That question remains largely unresolved.
What the Osprey Studies Suggest
One reason localized depletion has attracted scientific attention is because of osprey research.
Biologists studying portions of Chesapeake Bay documented declining reproductive success in some nesting populations.
Researchers observed that adult birds were bringing different prey species back to nests and, in some cases, appeared to be delivering fewer energy-rich menhaden than historically observed.
The concern was not simply about osprey numbers.
It was about what the birds might be indicating.
Osprey are highly efficient fish predators.
If they struggle to locate preferred forage in specific areas, researchers naturally wonder whether other predators may be experiencing similar challenges.
While alternative explanations certainly exist, including habitat changes, climate factors, and environmental stressors, the findings fueled further interest in localized prey availability.
Predators Don’t Read Stock Assessments
One criticism often voiced by anglers is that predators respond to conditions in real time.
A redfish cannot eat a coastwide biomass estimate.
A striped bass cannot feed on statistical abundance.
Predators require actual prey in actual locations.
This is why many fisheries scientists have become increasingly interested in ecosystem-based management.
Rather than focusing solely on whether a forage species remains abundant overall, ecosystem approaches attempt to understand whether enough forage remains available to support predator populations.
It represents a subtle but important shift in thinking.
The question is no longer only:
“How many menhaden exist?”
The question becomes:
“How many menhaden are available to predators when and where they need them?”
The Challenge of Measuring Local Impacts
One reason the localized depletion debate remains unsettled is that it is extremely difficult to measure.
Fish move.
Predators move.
Environmental conditions change.
Water temperatures fluctuate.
Weather patterns influence distribution.
Separating the effects of fishing from natural variability is one of the most difficult tasks in fisheries science.
As a result, definitive proof can be elusive.
But many researchers argue that uncertainty should not be mistaken for evidence that local effects do not exist.
In fact, some contend that localized depletion may be one of the most important unanswered questions in forage fish management.
Why the Debate Matters
At its core, the localized depletion debate is not really about menhaden.
It is about ecosystems.
If forage fish become less available in key feeding areas, the effects may extend far beyond a single species.
Striped bass may have to work harder to locate food.
Osprey may experience lower nesting success.
Marine mammals may alter feeding behavior.
Entire predator communities may be affected in ways that are difficult to detect through traditional stock assessments.
Whether those effects are large, small, temporary, or significant remains the subject of ongoing research.
But the question itself has become impossible to ignore.
A Different Way to Think About Fisheries
For decades, fisheries management focused on whether harvested species could sustain fishing pressure.
Today, scientists are increasingly asking whether ecosystems can sustain it as well.
Localized depletion sits at the center of that transition.
It challenges the assumption that a healthy stock automatically means a healthy ecosystem.
And it raises a possibility that many anglers intuitively understand:
A fish can be abundant somewhere and still be scarce where it matters most.
That possibility is why the localized depletion debate continues to shape discussions about menhaden management, predator conservation, and the future of ecosystem-based fisheries management along the Atlantic coast.”
But…this is happening now.
I continue to check in on Iris with tears in my eyes. Babies hatching and no fish for her or them. Where in the world is Clark? How far does he have to go and get fish?
This just might be the nest that breaks me this year.
Please send Iris and Clark your good wishes. We need fish!
The river’s levels are low, but it appears to be still flowing fast. The forecast is for cooler temperatures, thank goodness. Will Iris leave the nest with the babies to go fishing? This is the question of the day, along with the problem of Clark’s presence. He was so good til he got into that altercation with the Bald Eagle. Oh, I am worried.
Thank you for being with us again this morning.
Thank you to the Montana Raptor Project and Cornell Bird Lab for their streaming cam and the FB group Menhaden – Little Fish, Big Deal for covering the disaster that began several years ago in the NE. Thank you also to River Reports.