News / Science & Technology

    3D Gaming Technology Predicts Ocean Future

    Complex models see decline in edible fish

    Multimedia

    Audio
    Rosanne Skirble


    Video simulation in the Baltic Sea predicts overfishing, and an overload of nutrients or sewage in the water, will result in fewer large fish and more smaller ones. (Credit: Baltic Nest Institute, Stockholm, University of British Columbia, Vancouver)

    A team of international researchers has developed a powerful new computer tool which uses 3D gaming technology to evaluate the oceans’ rapidly dwindling food resources.

    The Nereus model incorporates climate change models, data related to human activities, and changes in the oceans’ food webs to calculate a timeline for harvestable marine life from 1960 to the year 2060.

    Nereus is designed to answer some big questions: How healthy will the world’s oceans be in the future, and will they support enough fish to help feed tomorrow’s hungry world?  

    Canadian fishery expert Villy Christensen directs the Nereus program at the University of British Columbia. At the recent annual meeting in Vancouver of the American Association for the Advancement of Science, Christensen presented some preliminary results. “We found that the fish biomass in the world ocean is around two billion tons,” he said.

    While that biomass has remained relatively stable and resilient over time, Christiansen says its makeup has dramatically shifted.

    “We are saying goodbye to the big fish in the oceans such as carp and grouper. For those we’ve seen about a 55 percent decline just in the last 40 years. And then it’s hello to small fish. We’re seeing many more of the small fish, the fish that we are not interested in.”

    These small fish - between 10 and 20 centimeters - are a dietary mainstay of foraging animals like whales, but they are not easy to harvest in the open ocean by commercial fishing fleets.  

    Christensen notes that at a time when many of the world’s fisheries are in decline, the global market for fresh fish is on the rise. “And we are running out of seafood. World supply is stagnant,” Christensen says.  

    Climate change, overfishing and a more acidic ocean are putting stress on global fisheries, according to Nereus team researcher William Cheung. The assistant fisheries professor at the University of British Columbia looked at how those factors affected 1,000 species of fish and invertebrates, and found both good news and bad in the outlook.

    “We find that just by warming alone we may increase the catch potential in the North Atlantic region by 50 percent because the fish are moving to these high latitudes. However, if we incorporate ocean acidification and de-oxygenation into the equation, we find that some of the regions change from winners to losers.”

    Greenhouse gas emissions from burning fossil fuels are changing ocean habitat, making it more acidic. That in turn affects the size and distribution of fish.  

    Christensen says the ocean modeling tool uses 3D gaming technology to communicate that information, turning scientific modeling data into a virtual world.

    Christensen says what viewers see are predictions of ocean conditions and the quantity and size of the fish.

    “The framework is set up with spatial information at a one-half degree, or 50-kilometer scale,” he says.

    Christiansen says the information can help local officials make better decisions about how to manage the ocean environment and marine resources near where they live.  

    The $13-million Nereus Predicting the Future Ocean program is a joint initiative between the Nippon Foundation of Japan and the University of British Columbia. Other collaborators include U.S. and European universities and the United Nations Environment Program.

    You May Like

    Hope Remains for Rio Olympic Games

    Facing a host of problems, Rio prepares for holding the games but experts say some risks, like Zika, may not be as grave as initially thought

    IS Use of Social Media to Recruit, Radicalize Still a Top Threat to US

    Despite military gains against IS in Iraq and Syria, their internet propaganda still commands an audience; US officials see 'the most complex challenge that the federal government and industry face'

    ‘Time Is Now’ to Save Africa’s Animals From Poachers, Activist Says

    During Zimbabwe visit, African Wildlife Foundation President Kaddu Sebunya says poaching hurts Africa as slave trade once did

    This forum has been closed.
    Comments
         
    There are no comments in this forum. Be first and add one

    Featured Videos

    Your JavaScript is turned off or you have an old version of Adobe's Flash Player. Get the latest Flash player.
    Ivorian Chocolate Makers Promote Locally-made Chocolatei
    X
    July 29, 2016 4:02 PM
    Ivory Coast is the world's top producer of cocoa but hardly any of it is processed into chocolate there. Instead, the cocoa is sent abroad to chocolate makers in Europe and elsewhere. This is a general problem throughout Africa – massive exports of raw materials but few finished goods. As Emilie Iob reports from Abidjan, several Ivorian entrepreneurs are working to change that formula - 100 percent Ivorian chocolate bar at a time.
    Video

    Video Ivorian Chocolate Makers Promote Locally-made Chocolate

    Ivory Coast is the world's top producer of cocoa but hardly any of it is processed into chocolate there. Instead, the cocoa is sent abroad to chocolate makers in Europe and elsewhere. This is a general problem throughout Africa – massive exports of raw materials but few finished goods. As Emilie Iob reports from Abidjan, several Ivorian entrepreneurs are working to change that formula - 100 percent Ivorian chocolate bar at a time.
    Video

    Video Tesla Opens Battery-Producing Gigafactory

    Two years after starting to produce electric cars, U.S. car maker Tesla Motors has opened the first part of its huge battery manufacturing plant, which will eventually cover more than a square kilometer. Situated close to Reno, Nevada, the so-called Gigafactory will eventually produce more lithium-ion batteries than were made worldwide in 2013. VOA's George Putic reports.
    Video

    Video Polio-affected Afghan Student Fulfilling Her Dreams in America

    Afghanistan is one of only two countries in the world where children still get infected by polio. The other is Pakistan. Mahbooba Akhtarzada who is from Afghanistan, was disabled by polio, but has managed to overcome the obstacles caused by this crippling disease. VOA's Zheela Nasari caught up with Akhtarzada and brings us this report narrated by Bronwyn Benito.
    Video

    Video Hillary Clinton Promises to Build a 'Better Tomorrow'

    Democratic presidential candidate Hillary Clinton urged voters Thursday not to give in to the politics of fear. She vowed to unite the country and move it forward if elected in November. Clinton formally accepted the Democratic Party's nomination at its national convention in Philadelphia. VOA national correspondent Jim Malone has more.
    Video

    Video Trump Tones Down Praise for Russia

    Republican presidential candidate Donald Trump is toning down his compliments for Russia and Vladimir Putin as such rhetoric got him in trouble recently. After calling on Russia to find 30.000 missing emails from rival Hillary Clinton, Trump told reporters he doesn't know Putin and never called him a great leader, just one who's better than President Barack Obama. Putin has welcomed Trump's overtures, but, as Zlatica Hoke reports, ordinary Russians say they are not putting much faith in Trump.
    Video

    Video Uganda Unveils its First Solar-powered Bus

    A solar-powered bus described by its Ugandan makers as the first in Africa has made its public debut. Kiira Motors' electric bus, Kayoola, displayed recently at a stadium in Uganda's capital. From Kampala, Maurice Magorane filed this report narrated by Salem Solomon.
    Video

    Video Silicon Valley: More Than A Place, It's a Culture

    Silicon Valley is a technology powerhouse and a place that companies such as Google, Facebook and Apple call home. It is a region in northern California that stretches from San Francisco to San Jose. But, more than that, it's known for its startup culture. VOA's Elizabeth Lee went inside one company to find out what it's like to work in a startup.
    Video

    Video Immigrant Delegate Marvels at Democratic Process

    It’s been a bitter and divisive election season – but first time Indian-American delegate Dr. Shashi Gupta headed to the Democratic National Convention with a sense of hope. VOA’s Katherine Gypson followed this immigrant with the love of U.S. politics all the way to Philadelphia.
    Video

    Video Dutch Entrepreneurs Turn Rainwater Into Beer

    June has been recorded as one of the wettest months in more than a century in many parts of Europe. To a group of entrepreneurs in Amsterdam the rain came as a blessing, as they used the extra water to brew beer. Serginho Roosblad has more to the story.
    Video

    Video Commerce Thrives on US-Mexico Border

    At the Democratic Convention in Philadelphia this week, the party’s presumptive presidential nominee, Hillary Clinton, is expected to attack proposals made by her opponent, Republican presidential nominee Donald Trump, to build a wall along the U.S.-Mexico border. Last Friday, President Barack Obama hosted his Mexican counterpart, President Enrique Peña Nieto, to underscore the good relations between the two countries. VOA’s Greg Flakus reports from Tucson.
    Video

    Video Film Helps Save Ethiopian Children Thought to be Cursed

    'Omo Child' looks at effort of African man to stop killings of ‘mingi’ children
    Video

    Video London’s Financial Crown at Risk as Rivals Eye Brexit Opportunities

    By most measures, London rivals New York as the only true global financial center. But Britain’s vote to leave the European Union – so-called ‘Brexit’ – means the city could lose its right to sell services tariff-free across the bloc, risking its position as Europe’s financial headquarters. Already some banks have said they may shift operations to the mainland. Henry Ridgwell reports from London.

    Special Report

    Adrift The Invisible African Diaspora