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Share this on:FacebookTwitterDiggdeliciousredditMySpaceStumbleUponLinkedInViadeo Melting Arctic 'blooms' with algaeBy Rose Hoare, CNNJune 11, 2012 -- Updated 0429 GMT (1229 HKT)if (typeof cnnArticleGallery=="undefined"){var cnnArticleGallery={};if(typeof cnnArticleGallery.currentImageList=="undefined"){cnnArticleGallery.currentImageList=[];}}var expGalleryPT00=new ArticleExpandableGallery();expGalleryPT00.setImageCount(4);//cnn_adbptrackpgalimg("Going green? ", 1);.cnn_html_slideshow_metadata > .cnn_html_media_utility::before{color:red;content:'>>';font-size:9px;line-height:12px;padding-right:1px}.cnnstrylccimg640{margin:0 27px 14px 0}.captionText{filter:alpha(opacity=100);opacity:1}.cnn_html_slideshow_media_caption a,.cnn_html_slideshow_media_caption a:visited,.cnn_html_slideshow_media_caption a:link,.captionText a,.captionText a:visited,.captiontext a:link{color:#004276;outline:medium none}.cnnVerticalGalleryPhoto{margin:0 auto;padding-right:68px;width:270px}
A satellite image of the Chukchi Sea, between Alaska and Russia, shows phytoplankton bloom (in green).cnnArticleGallery.currentImageList[cnnArticleGallery.currentImageList.length]={"currentPicture":true,"x":0,"y":0,"pos":1,"title":"Going green? "}Scientists on NASA's ICESCAPE expedition discovered vast amounts of phytoplankton blooming under sea ice, thanks to the magnifying properties of melt pools.cnnArticleGallery.currentImageList[cnnArticleGallery.currentImageList.length]={"currentPicture":false,"x":0,"y":0,"pos":2,"title":"Phytoplankton found in the Arctic"}ICESCAPE scientist Karen Frey takes optical measurements in a melt pond, which lets four times as much light through to the sea below as snow-covered ice.cnnArticleGallery.currentImageList[cnnArticleGallery.currentImageList.length]={"currentPicture":false,"x":0,"y":0,"pos":3,"title":"Melt-water pools"}WHOI biologist Sam Laney used this submersible Imaging FlowCytobot, which helped detect a toxic algal bloom in the Gulf of Mexico in 2008, to photograph marine organisms and measure chlorophyll fluorescence.cnnArticleGallery.currentImageList[cnnArticleGallery.currentImageList.length]={"currentPicture":false,"x":0,"y":0,"pos":4,"title":"Robots to find algae"}HIDE CAPTIONGoing green? Phytoplankton found in the ArcticMelt-water poolsRobots to find algae<<<
Scientists on NASA's ICESCAPE expedition discovered vast amounts of phytoplankton blooming under sea ice, thanks to the magnifying properties of melt pools.cnnArticleGallery.currentImageList[cnnArticleGallery.currentImageList.length]={"currentPicture":false,"x":0,"y":0,"pos":2,"title":"Phytoplankton found in the Arctic"}
ICESCAPE scientist Karen Frey takes optical measurements in a melt pond, which lets four times as much light through to the sea below as snow-covered ice.cnnArticleGallery.currentImageList[cnnArticleGallery.currentImageList.length]={"currentPicture":false,"x":0,"y":0,"pos":3,"title":"Melt-water pools"}
WHOI biologist Sam Laney used this submersible Imaging FlowCytobot, which helped detect a toxic algal bloom in the Gulf of Mexico in 2008, to photograph marine organisms and measure chlorophyll fluorescence.cnnArticleGallery.currentImageList[cnnArticleGallery.currentImageList.length]={"currentPicture":false,"x":0,"y":0,"pos":4,"title":"Robots to find algae"}HIDE CAPTIONGoing green? Phytoplankton found in the ArcticMelt-water poolsRobots to find algae<<<
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4>>>Event.observe(window,'load',function(){if(typeof(cnn_adbptrackpgalimg) == 'function' && typeof(cnnArticleGallery) != 'undefined'){cnn_adbptrackpgalimg(cnnArticleGallery.currentImageList[0].image,"The Arctic in bloom ");}});STORY HIGHLIGHTSA NASA expedition has discovered a huge phytoplankton bloom under Arctic iceScientists say melting ice pools function as skylights, enabling under-ice photosynthesisThe timing of such blooms could affect migratory species' feeding cycles(CNN) -- Scientists in the Arctic have discovered the largest ever under-ice bloom of phytoplankton, likening the discovery to "finding the Amazon rainforest in the middle of the Mojave Desert."
Researchers were amazed to discover a colossal 100 kilometer (62 miles) stretch of phytoplankton blooming under Arctic ice, north of Alaska, in July last year.It had previously been assumed that sea ice blocked the sunlight necessary for the growth of marine plants. But four times more phytoplankton was found under the ice than in ice-free waters nearby.Scientists now believe that pools of melting ice actually function like skylights and magnifying glasses, focusing sunlight into sea water, providing the perfect conditions for the intense phytoplankton bloom, which makes the water look like pea soup.Undiscovered until the 1970s, the ocean's phytoplankton is now understood to be responsible for about as much of the oxygen in our atmosphere as plants on land.The ecological consequences of the polar bloom are not yet fully understood but given phytoplankton's position at the base of the food chain, it is expected to have implications for ocean animals that feed in the area.This is like finding the Amazon rainforest in the middle of the Mojave Desert.Paula Bontempi, NASA.It was a serendipitous discovery for scientists who, as part of NASA's ICESCAPE program, were studying the impact of climate change in the Chukchi sea, where melt season changes are pronounced.Making their way through meter-thick ice aboard the U.S. Coast Guard's largest icebreaker Healy in July last year, scientists observed surprising amounts of fluorescing chlorophyll, indicating the presence of photosynthesizing plant life.Tide turns towards undersea energy"If someone had asked me before the expedition whether we would see under-ice blooms, I would have told them it was impossible," said ICESCAPE mission leader Kevin Arrigo of Stanford University, at a press conference announcing the publication of findings in "Science" this month. "This discovery was a complete surprise."Donald Perovich, a U.S. Army geophysicist who studied the ice's optical properties, described the under-ice area as looking "like a photographic negative"."Beneath the bare-ice areas that reflect a lot of sunlight, it was dark. Under the melt ponds, it was very bright," he said.The melt pools were found to let in four times as much light as snow-covered ice. Protected from ultraviolet rays, phytoplankton grows twice as fast under-ice as in the open ocean.Using an automated microscope system called an Imaging FlowCytobot, Woods Hole Oceanographic Institution biologist Sam Laney took millions of photographs of the phytoplankton organisms, some of which he also found in brine channels inside the ice.This discovery was a complete surprise.
Kevin Arrigo, Stanford UniversityAntarctic ice shelves 'tearing apart', says studyThe type of phytoplankton found near coasts can bloom rapidly when there are changes to the amounts of light and nutrients available. Some blooms are toxic for humans and marine life.If the Arctic sea ice continues to thin, blooms might become more widespread and appear earlier, which could pose problems for migrating birds and whales, said Arrigo."It could make it harder and harder for migratory species to time their life cycles to be in the Arctic when the bloom is at its peak," he said. "If their food supply is coming earlier, they might be missing the boat.""At this point we don't know whether these rich phytoplankton blooms have been happening in the Arctic for a long time, and we just haven't observed them before," he said.
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Part of complete coverage on Explore more with Eco SolutionsSolar boost for carsJune 11, 2012 -- Updated 0147 GMT (0947 HKT)
A hydrogen car powered by a solar-run fueling station may be the future of eco-cars. CNN's Kyung Lah reports. SeaOrbiter ocean explorerJune 11, 2012 -- Updated 0958 GMT (1758 HKT)
It could be an alien spacecraft but in fact it's a live-aboard, ocean-going laboratory that could soon be exploring the seas.Arctic 'blooms' with algaeJune 11, 2012 -- Updated 0429 GMT (1229 HKT)
Scientists in the Arctic have discovered the largest ever under-ice bloom of phytoplankton.Man creates glaciersJune 4, 2012 -- Updated 0243 GMT (1043 HKT)
A retired engineer's invention is keeping his community from becoming climate refugees. CNN's Sumnima Udas reports.Tide turns to undersea energyJune 1, 2012 -- Updated 1439 GMT (2239 HKT)
A 30-meter- turbine anchored to the seafloor off the Scottish coast is proving that tidal farms are a turn closer. Dream homes for batsJune 1, 2012 -- Updated 0223 GMT (1023 HKT)
A group of architects gathered in Oxford, England last month with an unusual brief -- to design the ultimate dream home for bats. 'Plasticized' oceansMay 22, 2012 -- Updated 1403 GMT (2203 HKT)
A marine expedition has confirmed the bad news it feared -- the "Great Pacific Garbage Patch" extends even further. Top ten conservation efforts
Explore the world's top ten conservation successes and failures with our interactive heat map.The most polluting-- Updated GMT ( HKT)
A new report from the WWF has ranked the top ten most polluting countries, with eco-friendly Denmark among them. Replacing 'flying toilets'May 21, 2012 -- Updated 0839 GMT (1639 HKT)
In the slums of Nairobi, visiting the bathroom usually means either a trip to the local pit latrine or the 'flying toilet'..cnn_strycrcntrnwsp .cnn_mtpmore { padding:10px 0px 1px 0px; }.cnn_stryccnwsp2 .cnn_stryccnwsp3 { width:100% }Most PopularToday's five most popular storiesCurfew imposed in TunisiaHow to train your mind to remember anythingEuro 2012: Russia and Poland fans clash in Warsaw'Gone With the Wind' actress Ann Rutherford diesCasey Anthony: 'I didn't kill my daughter'cnnad_createAd("480761","http://ads.cnn.com/html.ng/site=cnn_international&cnn_intl_pagetype=mmst&cnn_intl_position=300x150_rgt&cnn_intl_rollup=special_reports&cnn_intl_section=eco_solutions&page.allowcompete=no¶ms.styles=fs","150","300");cnnad_registerSpace(480761,300,150);cnnad_createAd("347205","http://ads.cnn.com/html.ng/site=cnn_international&cnn_intl_pagetype=mmst&cnn_intl_position=336x280_adlinks&cnn_intl_rollup=world&page.allowcompete=no¶ms.styles=fs","280","336");cnnad_registerSpace(347205,336,280); Loading weather data ...
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