Our Oceans are Under Attack

Discussion in 'All Things Boats & Boating' started by brian eiland, May 19, 2009.

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  1. Mr Efficiency
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    Mr Efficiency Senior Member

    Are the "watermelons" on this thread still on your case, Yob ? Green on the outside, red on the inside ! :p
     
  2. Yobarnacle
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    Yobarnacle Senior Member holding true course

    I really didn't want to discuss evolution. I drew a parallel between evolutionist and AGWer treatment of skeptics, and here I am. :D

    And I admit my POV is faith based, but they won't admit so is theirs.
     
  3. myark
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    myark Senior Member

    The average British carnivore eats more than 11,000 animals in their lifetime, each requiring vast amounts of land, fuel and water to reach the plate. It's time to think of waste as well as taste
    If we really want to reduce the human impact on the environment, the simplest and cheapest thing anyone can do is to eat less meat. Behind most of the joints of beef or chicken on our plates is a phenomenally wasteful, land- and energy-hungry system of farming that devastates forests, pollutes oceans, rivers, seas and air, depends on oil and coal, and is significantly responsible for climate change. The way we breed animals is now recognised by the UN, scientists, economists and politicians as giving rise to many interlinked human and ecological problems, but with 1 billion people already not having enough to eat and 3 billion more mouths to feed within 50 years, the urgency to rethink our relationship with animals is extreme

    Millions of hectares of trees have been felled for cattle ranching in the Amazon
     

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  4. ImaginaryNumber
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    ImaginaryNumber Imaginary Member

    Yes, currently, you are in the majority. But that is changing. It's not unusual that the older, calcified, generation has to die off before meaningful progress can be made. And yes, we remember, you plan to live to at least 200 years of age. So what? You will then be a minority of one. :D

    Just 3% of younger voters don't believe climate change is happening | Tampa Bay Times/Politifact

    Climate Change in the American Mind: Americans’ Global Warming Beliefs and Attitudes in November 2013 | Yale School of Forestry & Environmental Studies
     
  5. myark
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    myark Senior Member

    Overheating the planet
    We humans eat about 230m tonnes of animals a year, twice as much as we did 30 years ago. We mostly breed four species – chickens, cows, sheep and pigs – all of which need vast amounts of food and water, emit methane and other greenhouse gases and produce mountains of physical waste.
    But how much stress does our meat-eating put on ecological systems? The answer is a lot but the figures are imprecise and disputed. In 2006, the UN calculated that the combined climate change emissions of animals bred for their meat were about 18% of the global total – more than cars, planes and all other forms of transport put together.
    The authors of the report, called Livestock's Long Shadow, did not just count the methane from the belching, farting cattle, but the gases released from the manures that they produce, the oil burned taking their carcasses to markets often thousands of miles away, the electricity needed to keep the meat cool, the gas used to cook it, the energy needed to plough and harvest the fields that grow the crops that the animals eat, even pumping the water that the cattle need.
    The figure was revised upward in 2009 by two World Bank scientists to more than 51%, but attempts to fully account for meat-eating are condemned as simplistic. Should the studies have been based on giant US factory farms, or on more sustainable breeding in Europe? Should you include all the knock-on emissions from clearing forests? What about the fertiliser used to grow the crops to feed to the animals, or the emissions from the steel needed to build the boats that transport the cattle; or the "default" emissions – the greenhouse gases that would be released by substitute activities to grow food if we were to give up meat? And is it fair to count animals used for multiple purposes, as they mostly are in developing countries, from providing draught power to shoe leather or transport, and which only become meat once they reach the end of their economic lives?
    It's an accounting nightmare but depending on how it's done, livestock's contribution to climate change can be calculated as low as 5-10% of global emissions or as high as 50%. Last year, a food climate research network report concluded that UK meat and dairy consumption was responsible for 8% of the country's total greenhouse gas emission. But however it's counted, livestock farming ranks as one of the three greatest sources of climate changing emissions and one of the largest contributors to environmental degradation.
     
  6. ImaginaryNumber
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    ImaginaryNumber Imaginary Member

    Nitrogen runoff from Hawaii cities and farms causing lethal sea turtle tumors – ‘We’re drawing direct lines from human nutrient inputs to the reef ecosystem, and how they affect wildlife’ | Desdemona Despair
     
  7. hoytedow
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    hoytedow Carbon Based Life Form

    Pollution is a blight worth fighting, unlike the AGW myth, it is real and harmful.
     
  8. myark
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    myark Senior Member

    Spoiling the oceans
    The present oil pollution disaster in the Gulf of Mexico is not the only problem that the region faces. Most summers between 13,000-20,000 sq km of sea at the mouth of the Mississippi become a "dead zone", caused when vast quantities of excess nutrients from animal waste, factory farms, sewage, nitrogen compounds and fertiliser are swept down the mighty river. This causes algal blooms which take up all the oxygen in the water to the point where little can live.
    Nearly 400 dead zones ranging in size from one to over 70,000sq km have now been identified, from the Scandinavian fjords to the South China Sea. Animal farming is not the only culprit, but it is one of the worst.
     
  9. Yobarnacle
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    Yobarnacle Senior Member holding true course

    As the temperature hiatus continues, it will eventually become obvious to EVERYBODY that CO2 isn't causing further warming, if it ever caused any warming.
    Within 5 years, AGW will be a dead issue nobody talks about. My prediction. :p

    I'm interested in cleaning up pollution. CO2 is not pollution.
     
  10. myark
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    myark Senior Member

    A human population expected to grow by 3 billion, a shift in developing countries to eating more meat, and global consumption on track to double in 40 years point to the mother of all food crises down the road. How much food we grow is not just limited by the amount of available land but meat-eaters need far more space than vegetarians. A Bangladeshi family living off rice, beans, vegetables and fruit may live on an acre of land or less, while the average American, who consumes around 270 pounds of meat a year, needs 20 times that.
    Nearly 30% of the available ice-free surface area of the planet is now used by livestock, or for growing food for those animals. One billion people go hungry every day, but livestock now consumes the majority of the world's crops. A Cornell University study in 1997 found that around 13m hectares of land in the US were used to grow vegetables, rice, fruit, potatoes and beans, but 302m were used for livestock. The problem is that farm animals are inefficient converters of food to flesh. Broiler chickens are the best, needing around 3.4kg to produce 1kg of flesh, but pigs need 8.4kg for that kilo.
    Other academics have calculated that if the grain fed to animals in western countries were consumed directly by people instead of animals, we could feed at least twice as many people – and possibly far more – as we do now.
    To make matters worse, our hunger to eat animals has led to overstocking of fragile lands and massive soil erosion and desertification. Overgrazing, from the downlands of southern England to the uplands of Ethiopia and mountains of Nepal, causes great loss of fertility, as well as flooding.
    But the figures must be treated with caution. Animal manures can revitalise the soil and millions of animals live on marginal land that is quite unsuitable for crops.
    But before we leap to conclusions and lump all livestock rearing together, consider this: in western countries animals are bred and reared to put on as much meat as possible in the shortest time after which they are slaughtered. But in poorer regions, cattle – especially in dry areas – are central to human life and culture and often the only source of food and income for many millions of pastoralists. The ceaseless movement of these nomadic herders over vast areas is the backbone of many African economies and, a major new study from the International Institute for Environment and Development suggests, a far more ecologically efficient method of farming than the way cattle are reared in Australia or the US.
     
  11. myark
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    myark Senior Member

    Eat a steak or a chicken and you are effectively consuming the water that the animal has needed to live and grow. Vegetarian author John Robbins calculates it takes 60, 108, 168, and 229 pounds of water to produce one pound of potatoes, wheat, maize and rice respectively. But a pound of beef needs around 9,000 litres – or more than 20,000lbs of water. Equally, it takes nearly 1,000 litres of water to produce one litre of milk. A broiler chicken, by contrast, is far more efficient, producing the same amount of meat as a cow on just 1,500 litres.
    Pigs are some of the thirstiest animals. An average-sized north American pig farm with 80,000 pigs needs nearly 75m gallons of fresh water a year. A large one, which might have one million or more pigs, may need as much as a city.
    Farming, which uses 70% of water available to humans, is already in direct competition for water with cities. But as demand for meat increases, so there will be less available for both crops and drinking. Rich but water-stressed countries such as Saudi Arabia, Libya, the Gulf states and South Africa say it makes sense to grow food in poorer countries to conserve their water resources, and are now buying or leasing millions of hectares of Ethiopia and elsewhere to provide their food. Every cow fattened in Gambella state in southern Ethiopia and exported to Abu Dhabi or Britain is taking the pressure off water supplies back home but increasing it elsewhere.
     
  12. Yobarnacle
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    Yobarnacle Senior Member holding true course

    Whose propaganda makes more sense? Myark's is least impressive. As to water consumption, do potatoes pee?
     

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  13. myark
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    myark Senior Member

    According to the Vegetarian Society, the average British carnivore eats over 11,000 animals in a lifetime: 1 goose, 1 rabbit, 4 cattle, 18 pigs, 23 sheep and lambs, 28 ducks, 39 turkeys, 1,158 chickens, 3,593 shellfish and 6,182 fish.
    For this, say the vegetarians, the meat eaters get increased chances of obesity, cancers, heart diseases and other illnesses.
     
  14. ImaginaryNumber
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    ImaginaryNumber Imaginary Member

    Growth in carbon dioxide levels 17pc lower than predicted, plants absorbing more CO2 than expected | ABC (AU)
     
  15. hoytedow
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    hoytedow Carbon Based Life Form

    According to the Meatatarian Society, herbivores of all nationalities are missing out, leaving lots of geese, rabbit, cattle, goats, pigs, sheep of various ages, ducks, turkeys, chickens, shellfish and fish for our dinner plates. We thank you. Now go eat some florid organism and listen to it scream.
     

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