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Science

Satellite Study Shows Drop In Ocean's Plankton Level 46

An anonymous reader submits: "CNN reports there seems to be a dramatic drop in N. hemishpere phytoplankton and a net overall decline in the ocean's overall phytoplankton population. This has very serious implications for the overall food chain and also the scrubbing of CO2 in the atmosphere."
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Satellite Study Shows Drop In Ocean's Plankton Level

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  • SeaWiFS (Score:4, Informative)

    by LunarFox ( 591499 ) on Sunday August 18, 2002 @08:53PM (#4094822)
    Additional information on the spacecraft that made these observation is available on the SeaWiFS site [nasa.gov].
  • Or maybe el Nino? (Score:3, Insightful)

    by stefanlasiewski ( 63134 ) <(moc.ocnafets) (ta) (todhsals)> on Sunday August 18, 2002 @08:54PM (#4094826) Homepage Journal
    Don't plankton populations drop during the El Nino season? Different temperatures == fewer plankton survive the temperature change?
  • by Karma Farmer ( 595141 ) on Sunday August 18, 2002 @09:50PM (#4094979)
    But, the plankton can't all dies off. Once it's all gone, then what are we going to make this yummy new soylent green stuff out of?
  • by ccmann ( 118714 ) on Sunday August 18, 2002 @10:22PM (#4095061)
    Here's the original press release [nasa.gov] from NASA. The actual journal article, in Geophysical Research Letters, is not available on the Web to nonsubscribers.

    Note, though, an important sentence in the NASA release that is missing from the CNN account:

    "Also, summer plankton concentrations rose by over 50 percent in both the Northern Indian and the Equatorial Atlantic Oceans since the mid-80s. Large areas of the Indian Ocean showed substantial increases during all four seasons."

    There's still a net loss, but the real phenomenon appears to be a shifting of phytoplankton from north to south.
  • In spite of all of this, there will still be people who will be more worried about what would happen if the Earth got hit by an asteroid. click here [slashdot.org]
  • UVs (Score:4, Interesting)

    by Scrameustache ( 459504 ) on Monday August 19, 2002 @12:14AM (#4095493) Homepage Journal
    IIRC

    Plankton is sensitive to ultraviolet rays (in the "it kills it" sense), with all the talk of ozone layers and holes in the recent years, I wonder if this might be related.

  • Huh? (Score:2, Interesting)

    by Cyno01 ( 573917 )
    wern't we having the opposite problem with plankton? all the nitrates and crap from farming flowing down the mississippi into the gulf and causing a surge in plankton that was choking off the eco-system, there were dead fish washing up on every beach in the gulf, was the phytoplankton or am i thinking of something else?
    • Re:Huh? (Score:1, Interesting)

      by Anonymous Coward
      yeah, but thats what happens..things fluctuate, soon they will complain of too many fish, then plankton will come back, then fish, etc..it takes a little while for a stable eco-system to form when new things are added..but it will be fine.
    • The problem you refer to is on a different scale. You could dump every farm in the US into the Pacific ocean and it wouldn't mean much. The earth is much bigger than that.
  • If the oceans phytoplankton give up the ghost, then you really won't want to stick around on planet earth for very much longer. Dead oceans will cause the entire planet's ecosystem to collapse. On the other hand, perhaps the plankton, being simple single cell life, can adapt to hight temperatures and pollution more easily than other life forms. But it's still something to worry about...

  • Yes.... (Score:3, Funny)

    by JMZero ( 449047 ) on Monday August 19, 2002 @10:07AM (#4097240) Homepage
    But as long as there's still one Plankton, we'll all have to keep watch over our Krabbie Patties.
  • This is potentially very disturbing. However, we don't know that the levels in 1980 weren't abnormally high for some reason (e.g. growing use of fertilizer and increased mono-cropping exacerbating erosion of topsoil into the ocean).

    As usual, we read way too much into research findings.
    • Researchers have been collecting samples of seawater for a lot longer than 20 years. The levels in historical data could have been relatively steady, for all that's in the article.

      One thing for certain, if we are going to fight global warming we really can't afford substantial decreases in oceanic carbon fixation. We may have to do things like pumping nutrient-laden deep ocean water up to the surface to overcome the increased adverse thermal gradient and slowing winds (both of which tend to let the water stratify instead of mix).

      • I know that because they were using specific satellite technology which would not have been available much earlier.

        I know that because the article cites a drop *since* *1980*. Had there been a consistent drop since another time period...or even a stable period prior to that time, it should be mentioned in the article.

        The point is the only information in the article is that using satellite data, phytoplankton levels have dropped since 1980. From that information, there is only one thing that can be stated with any degree of certainty: that levels of phytoplankton are lower than they were 22 years ago.

        As much as the wild-eyed prophets would like to believe otherwise, that's not much to go on...
  • All we need to do is ask the aliens for the good package [epinions.com].

    Of course the Bush administration would rather we pick up the bad package... But hey, we just need to behave like Real Men.

  • Global warming (Score:2, Interesting)

    by gengee ( 124713 )
    I've always been extremely skeptical of global warming and most all evidence produced to 'prove' its existence.

    Why? A simple matter of common sense. You constantly see headlines in the liberal-news media similar to "2001 Average Global Temperature Highest Since 1670" which, of course, begs the question "Who/what was producing all the green house gases in 1670 that caused the Earth's temperature to rise so dramatically?"

    The answer is noone/nothing. There was no above average volcanic activity. There was certainly no man-made greenhouse gases. There was extraordinarily little man-made pollution. It was, in fact, a normal cycle in the Earth's temperature. We know that the Earth's temperature goes up and down over the course of hundreds and thousands of years.

    Not to mention of course the fact that 30 years ago we were heading into an iceage, and all advised to buy warm clothes. Won't this new global warming simply offset the predicted ice age of 30 years ago?

    The fact is these enviro-nuts don't have a fucking clue what they're talking about. There has been good scientific data produced, of course, but the media constantly reports tbe findings of liberal-financed propoganda from neo-hippy enviromental nutsos that will do/say anything to get their point across - that man is bad, and nature is good. It's a typical rage-against-the-machine type attitude.

    Anyway, in my ramblings I lost track of my point: If we take the plankton data at face value and accept it as true (Ha-ha) and we further stipulate that global warming is a reality - Maybe 'global warming' is directly attributable to the "dramatic drop" in phytoplankton in the N. Hemisphere. Why does the reverse have to be true? If memory serves, something like 80% of all oxygen is produced from cyanobacteria. I don't have exact figures (I never do:P) but thats a whole fuck-ton of carbom dioxide absorbtion.

    Don't get me wrong - pollution is bad. It obviously affects wild life populations (Prince William Sound, anyone:P) It's stinky, it's yucky and I don't want it in my back yard. But this idea that it's going to cause the flooding the world, that it will unleach monster hurricanes upon Oklahoma is rediculous.
    • Maybe you should look back over the history of the 20th century. Look for the people who were saying the sorts of things you're saying now about the environment, and tell me if they seem like they were right in retrospect. (I'm reading "Close to Shore" right now, about the shark attacks of 1916. "Gee, fish I buy in Philadelphia is tasting a little like coal tar, but nothing's been 'proven'...")

      When politically-obsessive folks -- your "liberal media conspiracy" asides make it all too clear -- refer to "common sense," the rest of us keep one hand on our wallets.

      • I was careful to quantify what I was saying, by limiting my response to global warming. As I said, pollution is yucky and I am very much against it. I don't want my fish having a hint of coal tar either, and if it did I'd be out looking for the fuckers ruining my Sunday dinner.

        However, I simply don't believe that coal tar, nor the exhaust from my car's tail pipe are going to somehow cause the temperature of the PLANET EARTH to change in any significant way. And in the event that I'm wrong, and it does impact the Earth's temperature (as if) I still don't believe it will have any significant impact on anyone (Any more so than normal fluctuations in temperature anyway).

        Yes, I realize it's almost heresy to say these days, but I firmly believe it:P

        You should note that I never said anything about a 'liberal media conspiracy.' I simply said the 'liberal media' - meaning news media outlets with liberal leanings.

        But you dragged it out of me. If you honestly believe American politics is not riddled with conspiracies (Richard Mellon Scaife anyone?), I have some nice land for cheap on the Big Island of Hawaii you might be interested in:P

        Wake up and smell the cash:P Why exactly do you think there are so many overlapping 'think tanks' and 'independent newspapers' in Washington DC? What possible purpose does The Heritage Foundation serve, other than a big umbrella organization that divvies up money from conservative billionaires and delegates it to other 'think tanks' to further their self-serving causes. How is it that the American Spectator, which consistently loses millions of dollars, is able to keep the presses going? Thanks to cash infusions from the likes of Richard Mellon Scaife.

        Don't you find it odd that a shadowy man, from Old Money Philadelphia, who never gives interviews and you rarely hear of is largely responsible for the current conservative control of the US Congress, and the election (ahem, appointment) of our current President? Newt Gingrich himself has said as much.
  • cloning!!!
    hey, we're doin it to mammoth, plankton are much smaller :D
    /me ignores anything that states she is wrong on this.
    -binky.
  • That's Save Lots Of Plankton... an overlooked advocate of single-celled oceanic life forms, brought to media attention by Michael Palin (of Monty Python fame) during an emotional Saturday Night Live monologue.

    Actually, that does not seem so funny anymore.

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