The modern thinking Indian

Part of the worries about global warming is about the loss of glaciers, with increasing melting and lower mass covered by the glaciers. Recent reports have confirmed the data, that glaciers are indeed getting impacted. Since glaciers are one of the primary source of water for the world's rivers, which are in turn are the primary sources of fresh water, water for irrigation purposes, and also energy generation through dams, such reports can only increase the alarm levels for the future of the world's population. Availability of fresh water is already problematic for huge chunks of the world's population, and these confirmation by scientists can only confirm that we are headed in for more trouble (link to article):

U.S. scientists monitoring shrinking glaciers in Washington and Alaska reported this week that a major meltdown is under way. A 50-year government study found that the world's glaciers are melting at a rapid and alarming rate. The ongoing study is the latest in a series of reports that found glaciers worldwide are melting faster than anyone had predicted they would just a few years ago. It offers a clear indication of an accelerating climate change and warming earth, according to the authors.
Since 1959, the U.S. Geological Survey, which published the study on its Web site, has been tracking the movements of the South Cascade glacier in Washington and the Wolverine and Gulcana glaciers in Alaska. The three glaciers are considered "benchmarks" for the conditions of thousands of other glaciers because they're in different climate zones and at various elevations.

The melting of the glaciers has both long term and short term problems. Along with the increase in water levels due to melting of polar caps and ice on Greenland, this melting of the glaciers will initially result in river levels going up, eventually contributing to higher sea caps; over a longer period, the glaciers will contribute lower amounts of fresh water and affect huge sections of the world's population. At the same time, the world's leaders cannot quit bickering, and take the steps required to reduce global warming.

Labels: Deal, Environment, Fresh Water, Future, Glacier, Global Warming, Melting, Ocean Levels, Politics, Reduction, Research, Scientific Study, Sea Levels

Scientists know that fishing stocks the world over are at risk, both from changes due to global warming, and due to over-fishing (and there have been many reports and articles predicting dire forecasts for the health of the fishing stock in the world's oceans). However, in a more detailed and back-looking approach, researchers are studying historical records to see what fish stocks were like just hundreds of years ago, and try to use that data to correlate into estimates of what the future will hold. They are getting hold of historical tax records and logs maintained by sailors, and studying them to determine the long-term impact.
The research was carried out by Members of the History of Marine Animals Project (HMAP), and they came out with results detailing the change in fish species over the past few hundred years that shocked them, and about which they believe that the level of public awareness is low (link to article):

The scale of humanity's impact has shocked them. "I was surprised by the magnitude of the depletion of species and its universality around the globe," Dr. Andrew Rosenberg, an HMAP project leader told CNN. "The extent of it was really quite dramatic. We've fundamentally changed ecosystems without realizing that was possible." HMAP research has revealed a picture of a remarkable wealth of life in the seas as recently as 200 years ago, which has now largely been lost.
Before whaling began in the waters to the south of New Zealand around 1800, the population of whales was roughly 30 times higher than today. In the 17th century the waters around southwest England were home to blue whales, as well as large numbers of porpoise, dolphins, and blue and thresher sharks. Around the world the inshore regions of our seas are estimated to have on average held 10 times the amount of life two or three hundred years ago than they do today.

The oceans are a fundamental factor in the continuance of the human species, whether that be due to the effect they have on global climate, or due to the fact that many geographical concentrations of humanity are dependent on sea life as a major source of nutrition. For the fisheries around the world to have lost so much correlates with earlier research from a couple of years back that stipulated the dangerous position that many of the world's fishing stocks are in. We already see this in the restrictions on the amount of fishing allowed in many regions around the Atlantic in order to conserve the fish population.
At the same time, the research also found that there is hope. If scientifically imposed restrictions on fishing are imposed, fish stocks have bounced back, with the example of the regeneration of the North Sea (Atlantic) herring stocks. If Governments have the courage to thwart the short term interests of the commercial fishing industry, then fish stocks (and the larger species such as whales and other larger fish) can come back.

Labels: Conservation, Ecology, Fish, Ocean, Regeneration, Research, Study