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MIGHTYJ

I am just a fish boat engineer who is a student of science and engineering.
Articles Posted: 210  Links Seeded: 63
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Fish in the Northwest Atlantic Are Going Hungry New Science From Maine's Department of Marine Resources Helps To Explain Why.

Wed Sep 7, 2011 1:56 PM EDT
environment, science, noaa, dmr, nefmc, fisheries-science, herring-fishery, maine-department-of-marine-resources, gulf-of-maine-aquarium, booth-bay-maine, marine-reources-specialist, james-becker, adam-st-gelais, north-atlantic-herring, herring-studies, fishery-science, accsp, spawning-stock-bio-mass, clupea-harengus, atlantic-multidecadal-oscillation, atlantic-herring-historical-database
By mightyj

This image was the first graphic of James Becker and Adam St. Gelais presentation and poses a question that has been asked all over the herring industry as the decline in size and weight of the herring has become more pronounced. This type of decline has been documented in other species in the gulf of Maine.

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  This should be an ideal time for both New England's fishermen and conservationists. Decades of sacrifice have caused the loss of (according to some reports) over 80 percent of fishing and fishing related jobs. This period of continuous decline has ended with the rebuilding of most of the fish stocks and the stabilization of the fisheries to sustainable catch levels. The ocean has healthy populations of marine mammals where just a couple of decades ago there were few. The plan to rebuild all fish stocks to optimum levels at the same time was considered by many to be biologically impossible but nature sure showed them...didn't it?  

 Many anecdotal reports indicate that all is not well in the ocean off of New England. Reports of undersized cod, scrawny haddock, tuna with low fat content and other quality issues indicate a lack of nutrition in the fish stocks that many have attributed to a lack of forage fish like sea herring. A lack of herring and especially large herring attributed for the most part to fishing activity by the herring boats has been put forth as an underlying cause. The discovery that the herring are going hungry and have seen the same type of size and quality declines related to being under-nourished as the other fish puts these misguided claims into perspective. Over-fishing of sea herring would leave plenty of food available for the remaining herring but such is not the case.

This graphic shows historical herring landings versus spawning stock bio-mass.You can see in the late 1960's the increasing landings (dashed line) with the decreasing Spawning Stock (solid line) were a recipe for disaster and resulted in the crash of the fishery in the 1980's. Today the herring (SSB) has recovered in a dramatic fashion but the catch remains very conservative in order to protect both the fish and the fishermen from another failure.

  An ecosystem as vast as the ocean is difficult to understand due to the large amount of predator prey relationships and the constantly changing conditions of those relationships and the environment itself. Understanding what is going on with some of the individual species is in many ways the best method to gain insight into what is going on with the system as a whole. The Department of Marine Resources in Maine has been studying the sea herring population for the last fifty years and have recently presented a new study that describes the decline of herring size, weight and quality over the last four decades. I was lucky to have attended this excellent presentation and was very surprised by their findings as to both the depth of the decline and the strong evidence supporting the cause of it.

 The presentation was called, "Where are all of the big herring? Atlantic Herring (Clupea harengus) size at age decreases over time in the Northwest Atlantic." It was the inspiration of James Becker a marine resource specialist two with the Department of Marine Resources in Boothbay Maine. It was also the work of Adam St. Gelais a marine resource specialist one. For the study they used data from the DMR Atlantic Herring Historical Database with it's fifty years of data from over 1.2 million individual fish. The age, lengths, whole weights, gonad weights, spawn condition, dates, gear type, catch locations and even stomach contents are all contained in the database. A wealth of historical information that can be used to spot trends and changes in the state of the Atlantic herring.

 Some highlights from the presentation were herring whole weights declining 40 to 60 percent and herring lengths declining 1 to 2 inches across all age classes. The overall condition factor (A ratio of length to weight that indicates how nourished a fish is) of all age classes of herring is in a declining trend as well. The reduction in size at age is not particular to herring and has been documented in other species in the gulf of Maine. The possibility that the fishery is selecting for smaller fish or that these trends are the result of fishing activity is ruled out by the fact that the downward trend is present in all of the age classes of fish and the mean age of fish landed remains constant over time.

This chart of Atlantic Herring mean lengths at age shows the decline of each year class of herring with the 3 year olds dropping below the threshhold of 230 mm used for spawn closures that stop fishing activity during spawning.(Shown as a red dashed line)

This chart shows the dramatic decline in herring weights since the 1980's. The loss of between 40 to 60 percent of the whole body weight of all herring age classes really high lights the cause of concern.

This graphic of 5 year old somatic wieghts (Whole weight minus ovary weight) of females in the month of July shows the decline with many of the possible variables removed. July is just before spawning season so the herring should have been feeding prior, only females are considered, weight without ovary weight is considered to rule out fluctuations in reproductive, only area 1a is considered because it has the most continuous data. The elimination of all possible variables helps to narrow the scope and isolate the fact that fish weights are going down in a continuous trend and have been since the late 1970's.

 The hypothesis that these declines are due to environmental factors is supported by a strong correlation between fish weight and length declines and sea surface temperature variations that are part of the Atlantic Multidecadal Oscillation, an oscillating fluctuation in sea surface temperatures with a period of about 60 years. Similar environmental fluctuations across the globe have been shown to impact fish populations and set a strong precedent for the correlations shown in this study. The mechanisms for this could be food limitations or alteration of trophic composition that have an impact on both the reproductive ability and the overall condition of the fish. The availability of plankton or the lack there of was noted but not a part of the study.

This chart shows the Atlantic Multidecadal Oscillation and outlines it's most recent period of warming. It states the theoretical effect of each phase of the oscillation which has been observed in herring in the Atlantic. The effects of this type of environmental change have been studied across the globe involving other species of fish with comparable results.

This graphic shows the various year classes Somatic weight (whole body weight minus ovary weight) the line indicates the change between positive to negative weight periods which correlates directly with AMO regimes with warmer temperature resulting in declining body weights of all age classes.

This graphic shows the various year classes of herring and the decline in ovary weight from a positive to negative regime. The green line indicates the change to a declining phase for ovary weights which occurs about 4 years before the decline in somatic weights (body weight minus ovary weight) marked by the red line. This occurs in all of the year classes in exactly the same way and indicates that whatever is happening to the fish is affecting reproduction first. Growing eggs for reproduction is an energy intensive activity that would be immediately impacted by a lack of nutrition.

 I found the explanations offered in the presentation to be extremely plausable. In the last ten years there has been a remarkable decline in the amount of feed in the ocean off of New England. On herring vessels we have excellent sounding equipment and used to drive over shoals of plankton that seemed like they would never end. Today that would be a rare thing indeed to see that much feed in the water. As a kid I remember old fishermen telling me the rise and decline of fish populations is cyclical and not under the control of managers and legislators. These claims were from observations made during life times spent at sea catching fish and not from any amount of academic study, it is interesting to learn of science that seems to indicate a cyclical pattern like they described. One thing is certain if the so called "Forage fish," do not have enough to eat, there is going to be problems in the rest of the food chain.

 I would like to thank the scientists at Maine DMR for their diligence and thorough efforts. It is through excellent work in the marine sciences like theirs that the future of our marine resources and ocean ecology are preserved.

James Becker (Marine Resource Specialist 2) presenting and documenting the decline in size and weight of herring in the Gulf of Maine and the waters of the New England Sea Coast. This video is a clip from a presentation by James Becker and Adam St. Gelais titled, "Where are all of the big herring? Atlantic Herring (Clupea harengus) size at age decreases over time in the Northwest Atlantic."

James Becker (Marine Resource Specialist 2) narrowing the scope of the documented decline in size and weight of herring in the Gulf of Maine and the waters of the New England Sea Coast. This video is a clip from a presentation by James Becker and Adam St. Gelais titled, "Where are all of the big herring? Atlantic Herring (Clupea harengus) size at age decreases over time in the Northwest Atlantic."

Adam St. Gelais (Marine Resource specialist 1) with Maine Department of Marine Resources discusses the correlation between the Atlantic Multidecadal Oscillation (an oscillating fluctuation in sea surface temperature) and the decline in size and weight of all age classes of sea herring in the Gulf of Maine and the surrounding waters of the New England Sea Coast.

This video is a clip from a presentation by James Becker and Adam St. Gelais titled, "Where are all of the big herring? Atlantic Herring (Clupea harengus) size at age decreases over time in the Northwest Atlantic."

The fish school in front of the DMR building in Booth Bay Maine. The gulf of Maine Aquarium and DMR buildings in Boothbay are in a very lovely area that I would love to visit again.

 All images and video are copyrighted works all rights reserved. The graphics and science were brought to you by the scientists at Maine Department of Marine Resources and are published here with their permission.

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  • Public Discussion (67)
mightyjDeleted
mightyj

Ocean science is more important than ever. When you take your next breath consider that half of the oxygen in it comes from the little creatures of the sea known as phyto-plankton. Without them most of the oxygen breathers on this planet would perish.

  • 14 votes
Reply#2 - Wed Sep 7, 2011 2:32 PM EDT
tzia62

Never knew that about oxygen!! Thanks for the info.

  • 9 votes
#2.1 - Wed Sep 7, 2011 2:37 PM EDT
bore-head007

j, this is a masterpiece. Kudo's to you my friend, a real game changing article.

Maybe its time for some real science.

  • 9 votes
#2.2 - Wed Sep 7, 2011 5:52 PM EDT
mightyj

bh-

Maybe its time for some real science.

I don't think I would say it like that. I would say.....

maybe it's a time for understanding, a time to gain insight into the changes that are occuring on our world.

  • 8 votes
#2.3 - Wed Sep 7, 2011 9:07 PM EDT
Reliant

Rising Ocean Temperatures, increased Acidity levels in the Ocean, changes in the cycling of ocean temperatures. Our oceans our oceans are being stressed, and as vast as they are and as vital a resource as they are, they are not unchanging and immutable as mankind has often thought. Humans are pretty amazing, we can break just about anything, it is past time that the health of our oceans was a bigger concern and priority.

  • 7 votes
#2.4 - Fri Sep 9, 2011 9:46 PM EDT
mightyj

Reliant- Thank you. I agree 100 percent.

  • 4 votes
#2.5 - Fri Sep 9, 2011 10:01 PM EDT
Reply
HollyKl

Very interesting article, JJ! Thanks for sharing all this information. I've missed your articles lately; glad to see you posting again! :)

  • 6 votes
Reply#3 - Wed Sep 7, 2011 3:00 PM EDT
mightyj

Holly, I am glad you liked it. (:

I have been busy with work but this article couldn't wait.

  • 8 votes
#3.1 - Wed Sep 7, 2011 4:10 PM EDT
Reply
Fletch-495299

Informative article JJ, other than "cyclical" and ocean temps are there any other issues affecting the health of the plankton?

  • 9 votes
Reply#4 - Wed Sep 7, 2011 3:09 PM EDT
mightyj

Fletch there are lots of issues affecting the plankton. Enough for entire articles and then some.

Consider the oil spill in the gulf for a moment. Instead of oil floating on the water chemicals were sprayed to disperse it into the water column.

Climate change is making the high ocean temperatures we are experiencing higher.

I think I will write some of those articles cause I have been doing quite a bit of research on the topic. There was a recent study that hypothecized that there was 40 percent less plankton now than in the 1950's. The work was flawed and has been pretty much discredited but I do wonder if the premise has some truth to it just not as extreme as stated.

  • 12 votes
#4.1 - Wed Sep 7, 2011 3:26 PM EDT
Physicist-retired

mightyj,

Here's the study you were referring to. From Scientific American (July, 2010):

Researchers at Canada's Dalhousie University say the global population of phytoplankton has fallen about 40 percent since 1950. That translates to an annual drop of about 1 percent of the average plankton population between 1899 and 2008.

The scientists believe that rising sea surface temperatures are to blame.

"It's very disturbing to think about the potential implications of a century-long decline of the base of the food chain," said lead author Daniel Boyce, a marine ecologist.

  • 10 votes
#4.2 - Wed Sep 7, 2011 5:42 PM EDT
bore-head007

Fletch, with everything going through the outfall pipes of sewerage treatment plants by the thousands, and including the pharmaceuticals ingested by humans for every ailment from high blood pressure to Prozac for mental health disorders, topped off with a liberal dose of chlorine, the effects must have far reaching consequences for the beginning of the food chain.

It is quite alarming to think that these fish are undernourished, and not reaching their full growth potential. The ramifications of these issues are dramatically important to everything in the ocean, and to us.

This is of extreme importance.

  • 9 votes
#4.3 - Wed Sep 7, 2011 5:49 PM EDT
mightyj

Phycisist retired- Thank you for those links. I really appreciate the information.

  • 9 votes
#4.4 - Wed Sep 7, 2011 8:52 PM EDT
bore-head007

From this article:

Something in the water

What drugs are local residents abusing? A researcher’s solution to that vexing problem suggests just how much our sewage knows about us

Although this article is about tracking drug use in communities to aid law enforcement in detecting the usage of illegal activity, it's not difficult to expand the thought process to include the mega tons of pharmaceuticals flowing from our bodies into the ecosystem.

The data intrigued her, but Field needed someone familiar with drug policies and surveillance to help her put it in context. So she went online, found drug experts, and began cold-calling them. A couple scoffed and said they weren’t interested in evaluating urine and feces. But then Field found a drug epidemiologist in Seattle, Caleb Banta-Green, a research scientist at the University of Washington who also sat on a work group that followed drug use in major cities for the National Institute on Drug Abuse. When Field phoned him, Banta-Green couldn’t believe what he was hearing. In the subjective, unreliable world of tracking drugs, Field had just found a way to quantify results with hard science. “It was the gold standard,” Banta-Green said. He told Field that of course he would work with her.

  • 5 votes
#4.5 - Thu Sep 8, 2011 12:14 AM EDT
Reply
Grisham

Interesting and well written article, J. Ocean life should be monitored and appropriate action taken when needed.

  • 6 votes
Reply#5 - Wed Sep 7, 2011 3:25 PM EDT
mightyj

Thanks Grisham, We have some really good people working in the marine sciences studying what is going on. I think it is really important to fund science of this kind. A lot of science funding is being diverted to regulatory needs right now and I hate to see the trend.

  • 6 votes
#5.1 - Wed Sep 7, 2011 4:09 PM EDT
Reply
mstanley2265

Ocean Pollution still remains a problem also.

  • 7 votes
Reply#6 - Wed Sep 7, 2011 3:43 PM EDT
mightyj

We have ocean pollution now that creates crystal clear (lifeless) water. The micro-organisms of our world get no consideration.

  • 7 votes
#6.1 - Wed Sep 7, 2011 4:04 PM EDT
Reply
baddestbob

pollution and over fishing are really depleting the stock. yet, the fishing industry fights regulation at almost every turn.

  • 3 votes
Reply#7 - Wed Sep 7, 2011 3:47 PM EDT
mstanley2265

you can't overfish fish that aren't there. Only 1 percent of herring eggs are estimated to survive after spawning, but the plankton issue is very real and overfishing did not cause that.

  • 6 votes
#7.1 - Wed Sep 7, 2011 3:55 PM EDT
mightyjDeleted
mightyj

I think I am my own worst critic today. This isn't a thread about regulation. There are plenty of those out there.

  • 9 votes
#7.3 - Wed Sep 7, 2011 5:07 PM EDT
bore-head007

baddestbob, please prove your notion of over fishing in 2011, and I'm interested on your take on fighting regulation. Please bring information, I am interested!

The Fishing Industry is probably the most regulated industry in this nation, believe it or not.

  • 7 votes
#7.4 - Wed Sep 7, 2011 5:56 PM EDT
mightyj

borehead- If you are waiting for a story about the over fishing of phytoplankton I think you could be waiting a long time.

  • 8 votes
#7.5 - Wed Sep 7, 2011 8:50 PM EDT
bore-head007

This is so obvious, j. I'm just amazed that some of these foundation based "scientist" were satisfied they had found the culprit, fishermen.

The foundation paid organizations have polluted the media with overfishing baloney, while ignoring the sanitizing, and sterilizing of the the bottom of the food chain, and the are in for an eye opener.

http://dicky-g.newsvine.com/_news/2011/09/08/7669054-winners-whiners-and-corporate-shill-liars

  • 5 votes
#7.6 - Thu Sep 8, 2011 12:12 PM EDT
Reply
BLOGER-486140

I wonder if the huge increase in jellyfish is responsible for the decline.

  • 4 votes
Reply#8 - Wed Sep 7, 2011 4:52 PM EDT
mightyj

Bloger- Did you know that a Jellyfish is a big zoo-plankton?

Jellyfish are mostly harmless, though some deadly varieties do exist, and have been described by marine experts as the cockroaches of the sea thanks to being tough, durable and able to survive in damaged environments.

Their numbers haven't really been seen to have increased that much in the Northwest Atlantic.

  • 4 votes
#8.1 - Wed Sep 7, 2011 5:02 PM EDT
Reply
Castor Bridge

Is the ocean temperature getting cooler off the coast and does this have an effect on the herring population?

http: //www.osdpd.noaa.gov/data/sst/anomaly/anomgcurrent.gif

  • 3 votes
Reply#9 - Wed Sep 7, 2011 5:25 PM EDT
mightyj

I didn't see much of a drop in the Northwest Atlantic but I did see the anomaly. Pretty cool (:

It's interesting talking about temperature and the difference between say what it is for the last week and what the trend is for the last twenty years or so.

In the case of the ocean, currents form and move based on those temperature differences. Currents that can bring needed minerals for life or......not.

  • 9 votes
#9.1 - Wed Sep 7, 2011 8:48 PM EDT
Reply
Vlad's dog

Thank you JJ for a great presentation of this information. It shows how the web of life is also tied to the food chain. One thing goes wrong then everything is affected. It has always been how I have looked at the natural world, a fine balance that can be upset very easily.

  • 7 votes
Reply#10 - Wed Sep 7, 2011 8:54 PM EDT
mightyj

Vlad's- Thank you for that most exellent comment. I couldn't agree with you more.

  • 6 votes
#10.1 - Wed Sep 7, 2011 9:59 PM EDT
Reply
etva

Excellent article, JJ! The explanation makes complete sense to me. As Vlad said, it takes very little change for the balance to shift, but the impact can be great.

  • 5 votes
Reply#11 - Wed Sep 7, 2011 9:42 PM EDT
mightyj

etva- Thank you. I have the highest hope that since we are at the Apex of the AMO cycle that cooling temperatures in the coming years will restore the ocean currents and breathe new life into the bottom of the food chain in the Gulf of Maine and the surrounding waters. Big fat healthy fish and marine mammals are in the best interest of us all.

  • 5 votes
#11.1 - Wed Sep 7, 2011 9:57 PM EDT
Reply
mightyj

This is from some research I was doing about a chemical that is being dumped into the sea by all of us and is a killer of phyto-plankton amongst other things.

As in the human population, triclosan is also pervasive in
the environment.23,24,25 Triclosan has made its way from
the store, to our homes, down the drain, and into our
water and wildlife. Previous research identified triclosan
in drinking water, surface water, algae, fish and earthworms.
26,27,28,29 New data reveal an even more sobering
picture of triclosan's impact on the environment, and the
food chain.

". . . triclosan is found in finished drinking
water, surface water, wastewater, and
environmental sediments, as well as in
the bile of wild fish, indicating extensive
contamination of aquatic ecosystems."30
(Fang, 2010)

Pesticides like triclosan are highly toxic to algae and other
microorganisms.31 A 2010 study tested the effects of triclosan
on naturally occurring bacterial communities. The results
indicate that even at low levels, triclosan can reduce
photosynthesis in a type of algae known as diatoms.32 It is
through the process of photosynthesis that diatoms generate
the oxygen and nourishment other aquatic life need to
survive.33

That last part should read diatoms generate the oxygen and nourishment that we (all 7 billion of us) need to survive.

The algae known as diatoms are a type of plankton. Secondary sewage treatment fails to eliminate triclorisan and rivers of it are flowing into the ocean. It should be banned.

  • 4 votes
Reply#12 - Wed Sep 7, 2011 9:47 PM EDT
ivorybill

Seven billion, we finally get to the source of earth's health problem. Mankind, in our yet adolescents, and still we suck in attitude from natures wise bosom. Wonder if we will mature in time to save some resemblence of what we have lost already, and what we are loosing even today? Seems our goals are not in proportion to healthy common sense. One's nation is forever trying to propell itself to the forefront of other nations by whatever means are at one's disposal, and nature is the grocerie store, though what was once so vast, is now consumed and exploited to a point of extinction and catatropfic change. CO2 up at 350ppm....no matter the cause....the effects are a stimulous to any fools complacentcy. Population control has to be intoduced as necessity, not as ignorant delaying questions of right or wrong. Dereliction in addressing this matter will only suffocate natures abilities to recover from it's burdens do to our creation and or evolution.

  • 4 votes
Reply#13 - Thu Sep 8, 2011 11:00 AM EDT
mightyj

ivorybill- Continued population expansion is something folks with a lot of money want because it fuels the growth that pays their bottom line. As long as new customers keep coming Wall street will always see an uptrend is the common thinking.

Someday growth will have to end......unless we find another planet.

  • 5 votes
#13.1 - Thu Sep 8, 2011 6:18 PM EDT
Reply
Door King

The statement that fishing has no affect on fish populations made me stop reading immediately. Why bother?

  • 1 vote
Reply#14 - Thu Sep 8, 2011 1:52 PM EDT
bore-head007

Where does it say that?

Pay no attention to tax payer funded research, the only unbiased research.

And really, why even bother making a statement anyway, if you didn't read it?!

The charts and grafts mean nothing either, do they.

  • 5 votes
#14.1 - Thu Sep 8, 2011 3:23 PM EDT
mightyj

Doorking- The statement was that the fishery was not, "Selecting for smaller fish," the strong evidence supporting the statement is in the data that you decided wasn't worth reading. The data is there for you to make up your own mind or at least to provide a basis of consideration.

The fact that fish size and weights of all age categories are in a declining trend is well documented. A lack of nourishment is well supported by strong evidence but it is still worth considering other alternatives. The fact that other species have been documented as having lost weight and size at age too (fish which are not subject to the same fishing activity) does indicate that the problem is not fishery related.

If my article disturbs anyone's faith based views, I suggest chanting overfishing, overfishing, overfishing.......It seems to work for that sort of thing.

Ps- You will not be able to read about this topic anywhere else for a while, but I urge you to look into the matter when sources you are more comfortable with catch up to what is going on.

  • 9 votes
#14.2 - Thu Sep 8, 2011 6:52 PM EDT
Reply
ish2dant

Congratulations on a fine presentation, JJ!

  • 9 votes
Reply#15 - Fri Sep 9, 2011 12:53 AM EDT
mightyj

Thank you Ish. The big thank you is for the scientists at Maine DMR. They were driving all the way to New Bedford in the middle of winter to get the new samples for this study.

  • 7 votes
#15.1 - Fri Sep 9, 2011 9:14 PM EDT
Reply
Remote Viewer

Excellent article, JJ, well researched and with an impressive group of sources. We ignore these trends at our own risk and that of the planet.

#13.1 - Someday growth will have to end......unless we find another planet.

God forbid we inflict our carelessness and greed on another ecosystem. May we survive long enough to gain some wisdom.

  • 5 votes
Reply#16 - Fri Sep 9, 2011 9:02 AM EDT
mightyj

RV- Thank you for stopping by to read the article. I am hoping we are gaining some wisdom we have tried to do the right thing at great cost to many in our coastal communities. Sometimes I wonder if we expect too much from nature.

The plan was to restore the ocean with all of it's fish stocks to optimum levels all at the same time. Along the way it is starting to look like the life giving waters of the sea may not be capable of supporting the amount of life we expect it to be able to based on historical populations of fish.

Hign ocean temperatures causing bottom of the food chain failure, pollution, too many creatures grazing on the low levels of plankton, lack of mineral providing currents to support life, whatever the contibuting factors are we need to learn more about it as quickly as possible. I think it is very important.

  • 8 votes
#16.1 - Fri Sep 9, 2011 9:08 PM EDT
Remote Viewer

Sometimes I wonder if we expect too much from nature.

I'm far less informed than you, but I believe that is the crux of the problem. Sooner or later whatever happens to the bottom of the food chain is transmitted all the way to the top. If we don't figure out what's going on and how to remediate it, I fear the planet will face mass extinctions - including our species.

  • 7 votes
#16.2 - Fri Sep 9, 2011 9:19 PM EDT
bore-head007

Remote Viewer, The thing to do is let them fish.

This article will explain the ramifications of jj's statement.

Chronic Underfishing - The Real New England Groundfish Crisis

The TAC (Total Allowable Catch) is the amount of fish, usually expressed in metric tons, that fisheries scientists determine may be removed sustainably from a stock of fish each year. Of the twelve species in the groundfish complex, fishermen had reached (or slightly exceeded) the target TAC for only two: white hake and monkfish. For monkfish, the target TAC was exceeded only in the Southern Management Area off the Mid-Atlantic. For the other ten species, fish that could have been caught (and landed and sold) were left in the ocean. The degree of underfishing (taking less than the TAC allows) ranged from 29% for monkfish from the Northern Management Area to 94% for haddock from Georges Bank. In 2008 the New England groundfish fishermen could have caught from 1/3 more monkfish to 16 times more haddock than they actually caught.

The total target TAC for the twelve groundfish species was almost 170 thousand metric tons. The total catch was less than 43 thousand tons. This was only 25% of what the fishermen could have caught without damaging the stocks. Assuming a conservative value of a dollar a pound for those fish (from 2000 to 2007, haddock returned an average of $1.20 a pound to the fishermen), they didn’t catch 280 million dollars worth of haddock, cod, flounder, etc. that they were allowed to catch. If every dollar’s worth of fish landed generates four dollar’s worth of total economic activity, that’s over a billion dollars lost to the New England economy, and lost primarily to New England’s struggling fishing communities.

With the revelations of this article comes a new, and sound reason to actually reach the TAC!

Not to mention, fishermen I talk to are mentioning the abundant fish they are catching are not as fat as they should be. Is it from lack of feed? It very well could be!

This definitely isn’t a one-shot phenomenon, an aberration due to the explosive growth of a single species. As Table 1 shows, New England groundfish stocks have been tragically underfished – if you count squandered resources and fishing communities in a state of institutionalized turmoil as a tragedy – for years. Going back in the NMFS reports, we see that in 1998, for example, only 20% of the pollock TAC, 1% of the redfish TAC, 9% of the white hake TAC, 15% of the plaice TAC, 21% of the winter flounder TAC, 7% of the witch flounder TAC and 2% of the windowpane flounder TAC was landed. While at that time the target TACs of several other much more valuable groundfish stocks were regularly and significantly exceeded, that is no longer the case.

Why haven’t the fishermen caught this potential windfall? Not because they didn’t want to, not because they didn’t have the expertise or the capacity or the equipment, but because the unbelievably complex web of regulations dictating where, when and how they can fish wouldn’t allow it. Fishermen today – and that includes New England’s groundfish fishermen – are restricted by areas that are closed permanently or sporadically to particular types of fishing gear, they are restricted in the type or amount of gear they can use (net mesh size, number of hooks, size of nets, etc.), they are restricted in the number of days they can fish, in the amount of fish they can keep, in the size and horsepower of the boats they fish from, in where they can offload their fish, in who they can sell them to, in short in just about every aspect of fishing up to but not yet including what they can eat for lunch - but there’s always next year.

  • 6 votes
#16.3 - Fri Sep 9, 2011 9:33 PM EDT
Remote Viewer

Thanks, bh - I have been reading your excellent articles about misguided regulatory actions, and I begin to see how all of this is connected and interdependent. When I read Barry Commoner's The Closing Circle back in 1971, it brought many revelations. I suppose the book is somewhat dated, but the insights are still valid.

  • 6 votes
#16.4 - Fri Sep 9, 2011 9:42 PM EDT
bore-head007

RV Some things are timeless!

1971 I was in boot camp!

Holy Mackerel.

  • 6 votes
#16.5 - Fri Sep 9, 2011 9:57 PM EDT
Angela1586572

MightyJ. & Bore-head 007, i am in class here; awestruck with an eye-opening reality. A lesson to read & take very seriously; today for tomorrow.


  • 5 votes
#16.6 - Tue Sep 13, 2011 10:56 PM EDT
Reply
ChuckGreg

On a global scale, plankton levels are reduced each year by about one percent. That doesn't sound like much until you realize that its been happening for many decades now.

  • 6 votes
Reply#17 - Fri Sep 9, 2011 10:04 PM EDT
mightyj

Chuckgreg- If the plankton levels are truly reducing by one percent a year then we are talking about an ecological disaster of the type that would eliminate a good portion of the planet's current population. I wonder what the evidence was they used to refute that study.

  • 7 votes
#17.1 - Fri Sep 9, 2011 10:49 PM EDT
Physicist-retired

mightyj,

The 1% annual decline in phytoplankton was revealed in a study published in Nature last year. If you're unfamiliar with that journal, I can only say that it's one of the most respected and prestigious science journals in the world.

Here's the abstract:

In the oceans, ubiquitous microscopic phototrophs (phytoplankton) account for approximately half the production of organic matter on Earth.

Analyses of satellite-derived phytoplankton concentration (available since 1979) have suggested decadal-scale fluctuations linked to climate forcing, but the length of this record is insufficient to resolve longer-term trends.

Here we combine available ocean transparency measurements and in situ chlorophyll observations to estimate the time dependence of phytoplankton biomass at local, regional and global scales since 1899.

We observe declines in eight out of ten ocean regions, and estimate a global rate of decline of ~1% of the global median per year.

Our analyses further reveal interannual to decadal phytoplankton fluctuations superimposed on long-term trends. These fluctuations are strongly correlated with basin-scale climate indices, whereas long-term declining trends are related to increasing sea surface temperatures.

We conclude that global phytoplankton concentration has declined over the past century; this decline will need to be considered in future studies of marine ecosystems, geochemical cycling, ocean circulation and fisheries.

If you're interested, go to the link, and scroll to the bottom of the abstract. There, you can access some very interesting figures. Figure 2 is most telling (although you'll need to zoom up your screen to actually read it) Compare the two global maps for phytoplankton density. It's astounding.

Basically, here's what they did. The study's authors used the best historical data available, based on a device called a Secchi disk (and other shipboard analyses of various types).

You can read more about the Secchi disk at the link, but it's been used since 1865 to measure ocean transparency/turbidity (cloudiness), and we have Secchi disk readings from around the world, including a very good data set from 1899.

So a new set of Secchi disk data was gathered in the early 2000s, and compared to the historical data. The comparison of the two sets shows an average 1% annual decline in phytoplankton for the last 100 years (that's an average - it probably was slower at first, and faster now).

Satellite measurements taken since 1979 were then used to look for causes/trends. That's where the temperature link showed up. Warmer surface waters showed a very strong relationship to phytoplankton decline.

So they concluded that phytoplankton biomass is falling dramatically (probably explains, in part, where all the big herring have gone), and the rising ocean temperatures are causing it. Combined with the oxygen data in the article I seeded a few days ago, and you start to get a good idea of what's driving all of this.

The fish are starving and gasping. Which, IMO, explains why fisherman are seeing smaller and smaller fish. It might not ever have had much to do with historical overfishing (that's still up for debate).

But now that 'overfishing' has been controlled, and yet all we still see are smaller fish, it's hard to conclude that 'overfishing' was the driving factor for this entire trend.

That's just my opinion - I'm not a marine biologist.

  • 7 votes
#17.2 - Sat Sep 10, 2011 8:11 AM EDT
Physicist-retired

I wonder what the evidence was they used to refute that study.

Sorry, I forgot about this part of your post.

Several shorter-term data sets, from Hawaii, California, and a few other places, don't seem to support this conclusion.

This is a good time to ask you about your own, real-world experience on the seas. Based on your personal observations, does it seem to you that fish are declining in numbers, or in size? Or both - or neither?

  • 7 votes
#17.3 - Sat Sep 10, 2011 8:30 AM EDT
mightyj

Phycisist- We have a boat that used to grow mussels really bad. We had to hog them out of the pipes twice a year with a 4 inch bladed pipe snake designed for sever sewer pipe clogs. We got tired of putting up with it and built a chlorine puck pipe onto the sea chest pipes in question. Loaded with chlorine pucks with a small hole for the chlorinated water to seep into the sea chest pipes it would inhibit the growth of the mussels. About 5 years ago the problem went away by itself and never came back.

Beaches that used to be filled with zebra mussels around here have nothing now. Fish sizes have been getting smaller for quite a while now. We can see feed in the water and we are seeing a lot less of it lately. This is all regional though. I can't see the rest of the globe from where I have been fishing the last ten years. Europe is doing really well on fish and Norway is having the best fishing seasons they have ever had. No reports of problems there for a while.

On Kodiak Island in Alaska they missed their salmon return forecast by 30 million fish. The little fishes went out into the world alright but they never made it back. Maybe there wasn't enough food for them.

  • 7 votes
#17.4 - Sat Sep 10, 2011 6:59 PM EDT
Ben Josephs

Aren't zebra mussels invasive? They are here, at least.

  • 6 votes
#17.5 - Mon Sep 12, 2011 9:38 AM EDT
mightyj

Ben- They sure used to be.

  • 6 votes
#17.6 - Mon Sep 12, 2011 9:52 PM EDT
Reply
Colorado Bob

The Great Oyster Crash and Why Ocean Acidification Is "A Ticking Time Bomb" for Both Marine Life and Humanity

http://coloradobob1.newsvine.com/_news/2011/09/14/7763177-the-great-oyster-crash-and-why-ocean-acidification-is-a-ticking-time-bomb-for-both-marine-life-and-humanity

Deep-sea fish in deep trouble

http://coloradobob1.newsvine.com/_news/2011/09/14/7764188-deep-sea-fish-in-deep-trouble

  • 2 votes
Reply#18 - Wed Sep 14, 2011 4:56 PM EDT
bore-head007

Why is it, the ones like Danial Pauly can get the lead in to an article seeded by an intelligent man?

I read this a couple of days ago. More baloney.

The author is incredible.

Anyone that prints an article that has ramifications claimed, should have links to support those claims, and as much as I searched, I found none. NONE.

More ENGO hyperbole.

http://dicky-g.newsvine.com/_news/2011/09/08/7669054-winners-whiners-and-corporate-shill-liars

http://jjthefisherman.newsvine.com/_news/2011/07/21/7126988-environmental-profiteers-ocean-in-peril

  • 4 votes
#18.1 - Wed Sep 14, 2011 5:17 PM EDT
mightyj

The posting of unsolicited links to one's own seeds on another person's article is called, "self promotion," or in some cases can even be considered link spamming.

It is a delete worthy violation of the Coh.

Most people would build the link into a clever comment about the topic that would make the links to their seeds valuable additions to the point they were trying to make.

Consider this a warning.

  • 5 votes
#18.2 - Wed Sep 14, 2011 7:16 PM EDT
Colorado Bob

mightyj - The oceans are in bigger trouble that just this seed.

ANCHORAGE — Scientists tracking a rare western Pacific gray whale were shocked last winter when the endangered animal left the Asian coast, crossed the Bering Sea and swam south along Alaska, British Columbia and the Pacific Northwest coasts.

The Top of the Vine tonight.

  • 4 votes
#18.3 - Thu Sep 15, 2011 1:04 AM EDT
Colorado Bob

One more for you -

The Chesapeake Bay looks like a dirty bathtub, its waters turned brown with mud and awash in pollution and floating debris, including uprooted trees, propane tanks, even a battered dining-room chair.

Braving boat-damaging hazards, scientists are swarming over the bay to see if the massive stormwater runoff from Tropical Storm Lee last week is going to knock the troubled estuary for another loop, just as it was recovering from an especially rough summer.

"It just doesn't look right," Jamie Strong, a biologist with the Maryland Department of Natural Resources, said of the malted-milk hue of the water as he and state biologist Zofia Noe cruised north from the Bay Bridge on Wednesday to sample water conditions. Along the way, they dodged partially submerged tree trunks — not always successfully — and skirted sprawling mats of grass and trash atop the water.

http://coloradobob1.newsvine.com/_news/2011/09/14/7766662-chesapeake-bay-fouled-by-susquehanna-flooding
The oceans are in bigger trouble that just this seed.

  • 2 votes
#18.4 - Thu Sep 15, 2011 1:12 AM EDT
Reply
Colorado Bob

mightyj - The oceans are in bigger trouble than just this seed.

The paper says the rising temperature of ocean water is causing a proliferation of the Vibrio genus of bacteria, which can cause food poisoning, serious gastroenteritis, septicemia and cholera.

"Millions of euros in health costs may result from human consumption of contaminated seafood, ingestion of waterborne pathogens, and, to a lesser degree, though direct occupational or recreational exposure to marine disease," says the paper. "Climatic conditions are playing an increasingly important role in the transmission of these diseases."

The paper also describes a host of other effects of ocean warming, both documented and forecast, including melting ice, rising sea levels, coastal erosion, increased storm intensity and frequency, along with chemical changes in the sea itself, including acidification and deoxygenation.

http://www.newsvine.com/_news/2011/09/13/7742565-scientists-bacteria-spreading-in-warming-oceans

  • 2 votes
Reply#19 - Thu Sep 15, 2011 1:41 AM EDT
Colorado Bob

The oceans are in bigger trouble that just this seed.

  • 2 votes
Reply#20 - Thu Sep 15, 2011 1:43 AM EDT
Colorado Bob

The oceans are in bigger trouble that just this seed.

A group of Russian and U.S. scientists will leave the port of Vladivostok on Friday on board a Russian research ship to study methane emissions in the eastern part of the Arctic.

"This expedition was organized on a short notice by the Russian Fund of Fundamental Research and the U.S. National Science Foundation following the discovery of a dramatic increase in the leakage of methane gas from the seabed in the eastern part of the Arctic, said Professor Igor Semiletov, the head of the expedition.

The group consists of 27 scientists who would attempt to measure the scale of methane emissions and clarify the nature of the process.

http://en.rian.ru/science/20110902/166364635.html

  • 2 votes
#20.1 - Thu Sep 15, 2011 1:45 AM EDT
Reply
Colorado Bob

MIGHTYJ -
Your motto :
MIGHTYJ
I am just a fish boat engineer who is a student of science and engineering.
My motto :
COLORADO BOB
Student of the Natural Sciences and Human Folly

  • 3 votes
Reply#21 - Thu Sep 15, 2011 1:51 AM EDT
Colorado Bob

Just a couple of students.

  • 3 votes
#21.1 - Thu Sep 15, 2011 1:52 AM EDT
mightyj

The oceans are in bigger trouble than just this seed.

There is a lot going on in the ocean. No matter how hard a person works on an article they can't include everything.

Just a couple of students.

(:

  • 4 votes
#21.2 - Thu Sep 15, 2011 7:29 AM EDT
Reply
Mrs D-1475814

Excellent article JJ. You put a lot of hard work into your articles and great information and I really appreciate it. Keep up the good work that you and some others who work hard to present the reality of what is really happening to the Oceans and the food source that it provides.

  • 5 votes
Reply#22 - Thu Sep 15, 2011 11:53 PM EDT
TR-421173

Awesome article, a lot of information, very well done.

  • 4 votes
Reply#23 - Sun Sep 18, 2011 5:43 PM EDT
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