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Politics : The Environmentalist Thread -- Ignore unavailable to you. Want to Upgrade?


To: Ron who wrote (5848)2/9/2006 11:09:23 AM
From: Skywatcher  Read Replies (1) | Respond to of 36917
 
It's about time they stopped acting like Muslims and got on with God's word to PROTECT HIS PLANET



To: Ron who wrote (5848)2/19/2006 8:39:05 PM
From: Skywatcher  Respond to of 36917
 
Protecting Earth's last frontier
Sylvia Earle and Dan Laffoley International Herald Tribune

SUNDAY, FEBRUARY 19, 2006


In 1962, John Glenn relayed this message to mission control when his pioneering flight on the Friendship 7 spacecraft passed across Western Australia at night: "The lights show up very well. Thank everyone for turning them on, will you?"

If he looked down from space today he might no longer see just the lights of our cities but the many lights of fishing boats. These lights can be so dense that they visibly outline the outer part of the South American continental shelf and entire seas in Asia.

These lights are from fishers using light to lure squid. This intense activity symbolizes the broader plight of our oceans. The imposing footprint of humanity has advanced from our shores and into the high seas, the ocean waters beyond national jurisdiction. This footprint damages and depletes almost everything in its path.

With the depletion of the cod fishery and so many other coastal fish stocks worldwide, the fishing industry has turned to the high seas to exploit their resources. Fishing operations are now targeting the seamounts, oceanic ridges and plateaus of the deep ocean beyond national jurisdiction, where ownership and responsibility do not lie with any nation.

In the course of a decade or more, we have caused significant damage to largely unknown ecosystems, depleted species and probably doomed many others to extinction. Every day, commercial fishing fleets dispatched primarily from just 11 nations venture onto the high seas to fish the deep ocean with seabed trawls.

They deploy massive gear with names like "canyon buster" that indicate the sheer scales involved and the damage they inflict. Everything along their path, from ancient corals and sponges to 250-year-old fish, is stripped away and caught in their nets. In a single trawl, lumps of sponges, corals and other species, together weighing as much as 10,000 pounds, can be removed. What is left is truly a stark, sterile, undersea desert.

The high seas are very special. It is here where you can find dense groupings of animals that derive their energy from sources other than the sun around volcanic vents on the deep sea floor. It is only here where you can find areas still free from introduced species, as in the seas around Antarctica. And it is here where you can find living organisms that are more than 8,000 years old, like many of the massive deep-sea corals.

But what really sets the high seas apart from all other areas we know is the overwhelming lack of protection for any of this natural heritage.

A United Nations meeting this week finally put the high seas on the map and on the agenda. Government officials from around the world gathered together with scientists, representatives from the fishing sector, conservation groups and other stakeholders to discuss conservation and sustainable use of marine biological diversity in the high seas, covering 64 percent of the Earth's surface.

They need to move quickly. Given the fragility of these environments, we simply do not have the luxury of time, but we can act before it is too late.

As we continue to build our understanding of the oceans and life within, we must establish marine protected areas that extend beyond just the areas we know today to be valuable or threatened.

We must place biodiversity conservation at the center of ocean governance, build the precautionary approach into the UN Convention on the Law of the Sea and ensure that every activity in these areas beyond national jurisdiction - be it fishing, mining, transportation, tourism or research - is conducted in a sustainable manner that is fair to present and future generations.

We must recognize that all of the geographical, geological and biological parts of the oceans are interrelated, interdependent and equal one tremendously significant ecosystem whole.

Right now, we have this opportunity to prevent the extinction of countless species and ecosystems that are only just being discovered, let alone understood. Now is the time to protect our last undiscovered wilderness, the world's final frontier - the high seas.

(Sylvia Earle is executive director of Conservation International in Washington. Dan Laffoley is vice chair marine of the IUCN World Commission on Protected Areas.)
In 1962, John Glenn relayed this message to mission control when his pioneering flight on the Friendship 7 spacecraft passed across Western Australia at night: "The lights show up very well. Thank everyone for turning them on, will you?"

If he looked down from space today he might no longer see just the lights of our cities but the many lights of fishing boats. These lights can be so dense that they visibly outline the outer part of the South American continental shelf and entire seas in Asia.

These lights are from fishers using light to lure squid. This intense activity symbolizes the broader plight of our oceans. The imposing footprint of humanity has advanced from our shores and into the high seas, the ocean waters beyond national jurisdiction. This footprint damages and depletes almost everything in its path.

With the depletion of the cod fishery and so many other coastal fish stocks worldwide, the fishing industry has turned to the high seas to exploit their resources. Fishing operations are now targeting the seamounts, oceanic ridges and plateaus of the deep ocean beyond national jurisdiction, where ownership and responsibility do not lie with any nation.

In the course of a decade or more, we have caused significant damage to largely unknown ecosystems, depleted species and probably doomed many others to extinction. Every day, commercial fishing fleets dispatched primarily from just 11 nations venture onto the high seas to fish the deep ocean with seabed trawls.

They deploy massive gear with names like "canyon buster" that indicate the sheer scales involved and the damage they inflict. Everything along their path, from ancient corals and sponges to 250-year-old fish, is stripped away and caught in their nets. In a single trawl, lumps of sponges, corals and other species, together weighing as much as 10,000 pounds, can be removed. What is left is truly a stark, sterile, undersea desert.

The high seas are very special. It is here where you can find dense groupings of animals that derive their energy from sources other than the sun around volcanic vents on the deep sea floor. It is only here where you can find areas still free from introduced species, as in the seas around Antarctica. And it is here where you can find living organisms that are more than 8,000 years old, like many of the massive deep-sea corals.

But what really sets the high seas apart from all other areas we know is the overwhelming lack of protection for any of this natural heritage.

A United Nations meeting this week finally put the high seas on the map and on the agenda. Government officials from around the world gathered together with scientists, representatives from the fishing sector, conservation groups and other stakeholders to discuss conservation and sustainable use of marine biological diversity in the high seas, covering 64 percent of the Earth's surface.

They need to move quickly. Given the fragility of these environments, we simply do not have the luxury of time, but we can act before it is too late.

As we continue to build our understanding of the oceans and life within, we must establish marine protected areas that extend beyond just the areas we know today to be valuable or threatened.

We must place biodiversity conservation at the center of ocean governance, build the precautionary approach into the UN Convention on the Law of the Sea and ensure that every activity in these areas beyond national jurisdiction - be it fishing, mining, transportation, tourism or research - is conducted in a sustainable manner that is fair to present and future generations.

We must recognize that all of the geographical, geological and biological parts of the oceans are interrelated, interdependent and equal one tremendously significant ecosystem whole.

Right now, we have this opportunity to prevent the extinction of countless species and ecosystems that are only just being discovered, let alone understood. Now is the time to protect our last undiscovered wilderness, the world's final frontier - the high seas.

(Sylvia Earle is executive director of Conservation International in Washington. Dan Laffoley is vice chair marine of the IUCN World Commission on Protected Areas.)



To: Ron who wrote (5848)3/24/2006 11:03:37 AM
From: stockman_scott  Read Replies (1) | Respond to of 36917
 
Earth's warming likely irreversible, scientists say

By ANDREW C. REVKIN
THE NEW YORK TIMES
Friday, March 24, 2006

Within the next 100 years, the growing human influence on Earth's climate could lead to a long and irreversible rise in sea levels by eroding Earth's vast polar ice sheets, according to new observations and analysis by several teams of scientists.

One team, using computer models of climate and ice, found that by about 2100, average temperatures could be 4 degrees warmer than today and that over the coming centuries, the world's oceans could rise 13 to 20 feet -- conditions last seen 130,000 years ago, between the last two ice ages.

The findings, being reported today in the journal Science, are consistent with other recent studies of melting and erosion at the poles. Many experts say there are still uncertainties about timing, extent and causes.

But Jonathan Overpeck of the University of Arizona, a lead author of one of the studies, said the new findings made a strong case for the danger of failing to curb emissions of carbon dioxide and other heat-trapping greenhouse gases.

"If we don't like the idea of flooding out New Orleans, major portions of South Florida, and many other valued parts of the coastal U.S., we will have to commit soon to a major effort to stop most emissions of carbon to the atmosphere," he said.

According to the computer simulations, the global nature of the warming from greenhouse gases, which diffuse around the atmosphere, could amplify the melting around Antarctica beyond that of the last warm period, which was driven mainly by extra sunlight reaching the northern hemisphere.

The researchers also said that stains from dark soot drifting from power plants and vehicles could hasten melting in the Arctic by increasing the amount of solar energy absorbed by ice.

The future rise in sea levels, driven by loss of ice from both Greenland and West Antarctica, would occur over many centuries and be largely irreversible, but could be delayed by curbing emissions of the greenhouse gases, said Overpeck and his fellow lead author, Bette Otto-Bliesner of the National Center for Atmospheric Research in Boulder, Colo.

In a second article in Science, researchers say they have detected a rising frequency of earthquakelike rumblings in the bedrock beneath Greenland's 2-mile-thick ice cap in late summer since 1993. They add that there is no obvious explanation other than abrupt movements of the overlying ice caused by surface melting.

The jostling of the giant ice-cloaked island is five times more frequent in summer than in winter, and has greatly intensified since 2002, the researchers found. The data mesh with recent satellite readings showing that the ice can lurch toward the sea during the melting season.

The analysis was led by Goran Ekstrom of Harvard and Meredith Nettles of the Lamont-Doherty Earth Observatory in Palisades, N.Y., part of Columbia University.

In Antarctica and Greenland, it appears that warming waters are also at work, melting the protruding tongues of ice where glaciers flow into the sea or intruding beneath ice sheets, like those in western Antarctica, that lie mostly below sea level. Both processes can cause the ice to flow more readily, scientists say.

Many experts on climate and the poles, citing evidence from past natural warm periods, agreed with the general notion that a world much warmer than today's, regardless of the cause of warming, will have higher sea levels.

But significant disagreements remain over whether recent changes in sea level and ice conditions cited in the new studies could be attributed to rising concentrations of the greenhouse gases and temperatures linked by most experts to human activities.

Sea levels have been rising for thousands of years as an aftereffect of the warming and polar melting that followed the last ice age, which ended about 10,000 years ago. Discriminating between that residual effect and any new influence from human actions remains impossible for the moment, many experts say.

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