What is bottom trawling?
Bottom trawling is an industrial fishing method where a large net with heavy weights is dragged across the seafloor, scooping up everything in its path – from the targeted fish to the incidentally caught centuries-old corals. Bottom trawls are used in catching marine life that live on the seafloor, such as shrimp, cod, sole and flounder. In the US, bottom trawling occurs on the Pacific, Atlantic and Gulf coasts, capturing more than 800,000,000 pounds of marine life in 2007. Bottom trawls are also commonly used by other fishing nations and on the high seas.
Why is it a problem?
Bottom trawling is unselective and severely damaging to seafloor ecosystems. The net indiscriminately catches every life and object it encounters. Thus, many creatures end up mistakenly caught and thrown overboard dead or dying, including endangered fish and even vulnerable deep-sea corals which can live for several hundred years.
This collateral damage, called bycatch, can amount to 90% of a trawl’s total catch. In addition, the weight and width of a bottom trawl can destroy large areas of seafloor habitats that give marine species food and shelter. Such habitat destructions can leave the marine ecosystem permanently damaged.
The extensive use of bottom trawls and dredges for commercial fishing
causes more direct and avoidable damage to the ocean floor -- including deep-sea coral and sponge communities and other unique and sensitive seafloor marine life -- than any other human activity in the world.
Bottom trawls and dredges are so destructive because they effectively clear-cut everything living on the seafloor.
Just insane isnt it
Why do we do this ?. Because we have already overfished the oceans to feed the overpopulation, having taken most of the fish, we are now scrapping the bottom of the barrel to get to the last of them
Bottom Trawling Impacts On Ocean, Clearly Visible From Space -- ScienceDaily
Ocean fishing: Bottom trawling causes deep-sea biological desertification -- ScienceDaily
Some deep-sea fishes live more than a century; some deep-sea corals can live more than 4,000 years. When bottom trawlers rip life from the depths, animals adapted to life in deep-sea time can't repopulate on human time scales. Powerful fishing technologies are overwhelming them.
Deep-sea fish in deep trouble: Scientists find nearly all deep-sea fisheries unsustainable -- ScienceDaily
This is what we are talking about when we say using more than one planet
The simple mindset will say how can that be ? we only have one planet, the claim must be impossible duh......
But this graphic is about replenishment rates. To harvest the fish we currently do, and have their stocks remain stable we would need 1.51 planets worth. to harvest the forests we do at the rates we do and have them grow back so there was no net loss would require 1.51 planets. (by 2030 at current rates of harvest 2 planets)
But since we dont have that extra planet, and since those resources cant renew themselves at the rate in which they are being taken, those resources shrink.
Sometimes irreversably, lost forever.
And its a double whammy, because as we gobble up these resources faster than they can renew, we also grow the population, which in turns makes us gobble up these resources even faster, compounding the problem exponentially.
You can raise a very large family on a credit card, but when that card gets cut up by the bank because you are spending faster than you are paying it back.........
You get left with a lot of hungry mouths to feed, and no way to do so
in the short term as Gene has pointed out
Food prices forecast to treble as world population soars
Food prices tipped to treble over the next 20 years as an explosion in the world's population triggers a global fight for food.
Food prices forecast to treble as world population soars - Telegraph
High Food Prices Seen by Olam CEO as Result of Population Growth - Bloomberg
But Lindsay Grant, in a pamphlet published by Negative Population Growth, Inc., warns that if production and per capita consumption stay where they are, and U.S. population continues to grow at the present rate, “we will be consuming all the grain we produce in less than two decades, and running a deficit in agricultural trade; from then on, we will face mounting shortages.” Satellite maps are said to show that Earth is rapidly running out of fertile land.
The Social Contract - Population Growth Escalates Food Prices