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Oceans Empty By 2048?

F34nor writes to mention a CBS news article about the depopulation of ocean species. According to a study by a scientist in Halifax, Nova Scotia and assisted by research from all around the world, the world's oceans will be emptied of large lifeforms by 2048. From the article: "Already, 29% of edible fish and seafood species have declined by 90% — a drop that means the collapse of these fisheries. But the issue isn't just having seafood on our plates. Ocean species filter toxins from the water. They protect shorelines. And they reduce the risks of algae blooms such as the red tide. 'A large and increasing proportion of our population lives close to the coast; thus the loss of services such as flood control and waste detoxification can have disastrous consequences,' Worm and colleagues say."

17 of 589 comments (clear)

  1. They seem to be forgetting something... by dduardo · · Score: 1, Insightful

    Less Supply = Higher Price
    Higher Price = Less Demand
    Less Demand = Fish Population Increases

    If a can of tuna went for $300 dollars because of a tuna shortage, I bet a lot of people would start cutting back on their tuna consumption.

    1. Re:They seem to be forgetting something... by MichaelSmith · · Score: 2, Insightful
      Less Demand = Fish Population Increases

      Ecosystems don't work that way. Fish need a certain population density to breed properly. They don't use singles bars like us humans.

      The linear relationship you assume exists...doesn't.

    2. Re:They seem to be forgetting something... by node+3 · · Score: 3, Insightful

      You fail at economics.

      If tuna went for $300/can, it would be even more aggressively fished, not less.

    3. Re:They seem to be forgetting something... by victim · · Score: 2, Insightful

      I'm sure the passenger pigeons will be comforted by your unwavering faith in free markets.

    4. Re:They seem to be forgetting something... by Jeremi · · Score: 2, Insightful
      If a can of tuna went for $300 dollars because of a tuna shortage, I bet a lot of people would start cutting back on their tuna consumption.


      If tuna fisherman could get $300 for every can of tuna they sold, I bet they'd be a lot more motivated to catch every last tuna they could find. How much do you suppose the last tuna on Earth (ever!) would sell for?

      --


      I don't care if it's 90,000 hectares. That lake was not my doing.
    5. Re:They seem to be forgetting something... by Beryllium+Sphere(tm) · · Score: 2, Insightful

      Economics has this concept called a "demand curve". Demand for tuna is elastic.

      Try looking at it this way. With tuna at $300/can, the market for it is people who (1) can afford $300 for a can of food and (2) think tuna is the best way to spend the $300. A small fishing fleet would suffice to serve that kind of niche market.

    6. Re:They seem to be forgetting something... by jbuda123 · · Score: 2, Insightful

      Ack! No!!! If the price increases to $300/can because of some government intervention to put a floor under prices (the way they do/have done for many crops) then yes, it will lead to more fishing. But the price isn't increasing because of this - it's increasing specifically because there are fewer fish, meaning it now takes almost $300 to CATCH a can of fish! In a well functioning market with low barriers to entry like tuna catching, the marginal price roughly equals the marginal cost. Which means the profit on a $300 can of tuna is going to be roughly what it is on a $3 can of tuna, which is to say probably a few cents. So given that almost NO ONE will buy $300 tuna, I'm not seeing a lot of money in the $300/can tuna industry.

      Don't accuse other people of failing economics when you have no idea what you're talking about.

  2. It's so self-evident by Tester · · Score: 3, Insightful

    The solution is painful, but simple. Commercial fishing has to disappear. Already half of the world's fish consumption is fish-farmed. In the same way that we don't allow commercial hunting of land animals, we'll have to forbid commercial fishing. It's true that for now farmed fish is most of the time not as good as the hunted one, but its just a matter of time before we improve the technology enough to fix the problem.

  3. I see your point by misanthrope101 · · Score: 4, Insightful
    "Resources are being used faster than they are being replenished, and the supply is finite" doesn't logically, inescapably lead to "we'll run out". Well, unless you use logic. See, this type of argument doesn't require that we just trust all these scientists. They aren't standing there saying "well, we're pretty smart, so you should believe us, with no evidence offered, and change everything you're doing." If these two conditions are correct:
    1. Sea life is dying faster than it is being replenished
    2. The supply is finite
    Wouldn't it seem painfully obvious that we'll run out? Do you think they're really relying on the "argument from authority" fallacy? Do you think that more sea life will just magically appear? Or do you just not care? People with your worldview really confuse me. I can't figure out if it's science you distrust, or statistics, or what. "Scientists are fallible" doesn't refute any single conclusion, much less one that you can figure out for yourself to be true. This isn't quantum mechanics or some other obscure field that requires a lot of expertise. If you cut down trees faster than trees grow, you'll end up with zero trees. Change trees to fish, and what do you get? How can you manage to have such scorn for something with such serious consequences?
    1. Re:I see your point by misanthrope101 · · Score: 4, Insightful
      with less species there is less competition. with less competition other species flourish. without evidence, my theory is just as likely.
      The food net is more delicate than that, and species are heavily dependent on each other. Also, species survival depends on a certain population level--if you cut too far, individuals will have a harder time mating, and so on. I'm no expert, but I took a class on Oceanography, and it was surprising how delicate the balance is. Yes, the earth's oceans will recover from depletion--in thousands or millions of years. Scary "the sky is falling" stories like this aren't predicated on the idea that the earth will never recover, only that it won't recover in enough time to prevent serious harm to our (human) way of life. This goes a bit beyond shrimp being an extra dollar a pound.
    2. Re:I see your point by An+Onerous+Coward · · Score: 3, Insightful

      Are you claiming that, if the world's most productive fisheries collapse, only Japan will really care? You might want to push the following onto that stack: Hawaii, Canada, Australia (whose fisheries have already collapsed), and, well, just about every country with a coastline (or any country that trades with a country with a coastline).

      Unfortunately, we do get a lot of food from the oceans right now. Since we only have to catch the fish instead of raising them, it's like getting all that food free. Once that gravy train runs out, we'll have to significantly increase our agricultural output to make up the shortfall. Please read that as, "Our economy will have to work harder to obtain the same amount of food."

      Fisheries are a renewable resource, if you harvest from them at a sustainable rate. Think of it as having a bank account with a million dollars in it. If you live solely on the interest, it can be a huge boon, providing you many more dollars over the years than are actually in the account. But if you start spending it irresponsibly on hookers, coke, and Alienware systems, you wake up one day and find that the account is at $1072.38. Instead of providing you ten thousand dollars a year, it can now only provide you ten. Of course, you can leave it alone and it will "recover", but that process won't be complete until long after you're dead.

      It galls me when people like yourself talk about how we don't need to worry about destroying resource X, because when it runs out we'll move to resource Y. Especially when that resource could be eternally productive, if people would just agree to live off the interest, instead of sucking it dry. We'll all be worse off when the fish are gone.

      --

      You want the truthiness? You can't handle the truthiness!

  4. Re:just keep makin' babies by servognome · · Score: 1, Insightful
    die you stupid fucks. make more babies. watch them die.

    Somebody isn't getting any.
    --
    D6 63 0D 70 89 81 BB 8E 7B 7C 5F 5D 54 EA AB 73
  5. Re:what a hard-nosed skeptic you are by AaronLawrence · · Score: 3, Insightful

    The situation with the oceans seems fairly obvious and logical (and we know we've already depleted quite a lot), so I don't see how you can disparage as a "Malthusian doom". More like an inevitable direction that we will have to face up sooner or later...

    --
    For every expert, there is an equal and opposite expert. - Arthur C. Clarke
  6. Re:what a hard-nosed skeptic you are by misanthrope101 · · Score: 4, Insightful
    Oh, get over yourself.
    Yes, the fact that I respect scientific evidence and am concerned about its implications definitely indicates that I have an overly inflated opinion of myself. I'm so arrogant that I accept the scientific consensus about climate change and its potential effect on our lives. If I only had enough humility to summarily dismiss the conclusions of scientists, the very people who gave me medicine, technology, etc. If I had a slightly lower opinion of myself I'd be arrogant enough to think I knew more than people who have more education and knowledge on this particular subject. Thank you for your acute and insightful assessment of my character.

    People have been predicting the Malthusian doom of mankind and the planet forever
    Ah yes, the hand-waving "they're making it all up, and scientists have been wrong before!" rebuttal. Are you saying the temp is not increasing, or that it will have no effect on human life? I can understand (though disagree with) the point that the temp is increasing but it just doesn't matter, but I can't quite figure out your position.
  7. Re:what a hard-nosed skeptic you are by RsG · · Score: 2, Insightful
    Crichton's State of Fear is a now infamous piece of pseudo-science. Never cite it if you want to be taken seriously.
    I'm honestly amazed that people cite Crichton at all in a serious discussion. Not because I have anything against the man personally, but because he's a fiction writer.

    It's like citing Stephen King on the subject of, say, epidemiology. Does anyone think The Stand is a reputable source of scientific information? No? Then why would State of Fear be? Again, nothing wrong with liking a book, but there is no sensible reason to cite fiction as if it were fact. Crichton doesn't belong in a discussion of climate change.

    Plus, Crichton himself isn't a very good science fiction writer. He gets his facts muddled in his other books; Jurrasic Park screwed up both archeology and biology - the Velociraptors being an example of the former, and "life will find a way" Lamarkism being an example of the latter. I could see citing a scifi author on a subject like technology in the future, but only if that author did his research.
    --
    Erotic is when you use a feather. Exotic is when you use the whole chicken.
  8. Re:what a hard-nosed skeptic you are by edumacator · · Score: 2, Insightful

    Your response is exactly what I'm suggesting. It's reasoned and you didn't resort to attacking me, but instead dealt with the issue I raised. I'm afraid though you lumped my own views in with that of the poster I was, for want of a better term, defending. I wasn't defending what he said, but encouraging others to respond differently.

    I actually am totally on the Global Warming bandwagon. I had some concerns over the past decade, but slowly I have learned more, and don't doubt the seriousness of the issue. But my concern is the way people respond to the skeptics. I think this issue permeates western society in general, but I'll stay with the specifics here.

    I'm a teacher, and I promise you the majority of the population I've taught, including many on /. never look at scientific journals, or even summaries of scientific journals. They rely on the media and snippets of information on the web to get their information. When we, those who actually seek out a deeper understanding of issues, have a chance to address those who are less informed, as I think the original poster was, we need to engage them in discussion. But generally when they give an uninformed opinion, they are assaulted with personal attacks, as somewhat happened in this instance. They logically conclude that the people on the other side of the issue are mean spirited extremists. That is where a lot of the distrust comes from.

    I wish we lived in a society that didn't see the world in thirty seconds snippets. I wish everyone looked deeper. But they never will if they aren't encouraged to. In another thread, a poster commented on Crichton's State of Fear and was told not to cite it if he wanted to be taken seriously. That's a quick way to end a productive conversation.

    I originally thought the book raised some important issues that deserved to be discussed. Since reading it, I've seen some clear refutations of much in the book, but I'm glad it was written. More people might now ask questions, and therefore start a discussion they would not have had otherwise.

    If I yelled at my students whenever they asked an uninformed question or claimed something as fact that was really fiction, I would never have the opportunity to teach them because they would have a natural distrust for me. Let the uninformed questions come. Ask them questions, in return, that point to a better understanding. But too often, outside academic settings, when people venture an opinion, they are shot down with personal attacks. They then walk away, offended, and unwilling to consider an alternative.

    Now if you ask rational questions and repeatedly get personal attacks in your face, then they look the fool.

    --steps off soap box.--

  9. Slashdot car analogy. by TapeCutter · · Score: 2, Insightful

    I remeber a young guy who drove too fast, we all told him repeatedly he would crash and hurt someone but he just shrugged it off and tried in vain to crack jokes about it. He worked with us for six months, even though he had his seat belt on the force of the impact threw him out of the drivers window, his father who had also lectured him recognised the car as he drove past the smash on the way home from work. The kid didn't die but he spent a year in hospital and AFAIK still requires full time care, nobody needed or wanted to say "I told you so".

    TFA: They didn't pick the number, it is simply the point where the trend line cuts the X-axis, also it wasn't really the aim of the study to come up with a number it was simply a by-product of their survey. The study took current trends in fish catches and found we will run out of commercial fish stocks IF we continue our current fishing practices. In other words: Behaviour has both predicatble and unpredictable consequenses, think about them before shrugging the warning off as a computer glitch.

    Disclaimer: I appreciate humour as much as the next bloke but I find it hard to laugh at the "soylent oceanographic servey".

    --
    And did you exchange a walk on part in the war for a lead role in a cage? - Pink Floyd.