Sunday, June 5, 2011

372. Plan for China’s Water Crisis Spurs Concern


Three Gorges Dam on Yangtze River
By Edward Wong, The New York Times, June 1, 2011
A chronic drought is ravaging farmland. The Gobi Desert is inching south. The Yellow River, the so-called birthplace of Chinese civilization, is so polluted it can no longer supply drinking water. The rapid growth of megacities — 22 million people in Beijing and 12 million in Tianjin alone — has drained underground aquifers that took millenniums to fill.
Not atypically, the Chinese government has a grand and expensive solution: Divert at least six trillion gallons of water each year hundreds of miles from the other great Chinese river, the Yangtze, to slake the thirst of the north China plain and its 440 million people.
The engineering feat, called the South-North Water Diversion Project, is China’s most ambitious attempt to subjugate nature. It would be like channeling water from the Mississippi River to meet the drinking needs of Boston, New York and Washington. Its $62 billion price tag is twice that of the Three Gorges Dam, which is the world’s largest hydroelectric project. And not unlike that project, which Chinese officials last month admitted had “urgent problems,” the water diversion scheme is increasingly mired in concerns about its cost, its environmental impact and the sacrifices poor people in the provinces are told to make for those in richer cities.
Three artificial channels from the Yangtze would transport precious water from the south, which itself is increasingly afflicted by droughts; the region is suffering its worst one in 50 years. The project’s human cost is staggering — along the middle route, which starts here in Hubei Province at a gigantic reservoir and snakes 800 miles to Beijing, about 350,000 villagers are being relocated to make way for the canal. Many are being resettled far from their homes and given low-grade farmland; in Hubei, thousands of people have been moved to the grounds of a former prison.
“Look at this dead yellow earth,” said Li Jiaying, 67, a hunched woman hobbling to her new concrete home clutching a sickle and a bundle of dry sticks for firewood. “Our old home wasn’t even being flooded for the project and we were asked to leave. No one wanted to leave.”
About 150,000 people had been resettled by this spring. Many more will follow. A recent front-page article in People’s Daily, the Communist Party’s mouthpiece, said the project “has entered a key period of construction.”
Some Chinese scientists say the diversion could destroy the ecology of the southern rivers, making them as useless as the Yellow River. The government has neglected to do proper impact studies, they say. There are precedents in the United States. Lakes in California were damaged and destroyed when the Owens River was diverted in the early 20th century to build Los Angeles.
Here, more than 14 million people in Hubei would be affected if the project damaged the Han River, the tributary of the Yangtze where the middle route starts, said Du Yun, a geographer at the Chinese Academy of Sciences in Wuhan, the provincial capital.
Officials in provinces south of Beijing and Tianjin have privately raised objections and are haggling over water pricing and compensation; midlevel officials in water-scarce Hebei Province are frustrated that four reservoirs in their region have sent more than 775 million cubic meters, or 205 billion gallons, of water to Beijing since September 2008 in an “emergency” supplement to the middle route.
Overseers of the eastern route, which is being built alongside an ancient waterway for barges called the Grand Canal, have found that the drinking water to be brought to Tianjin from the Yangtze is so polluted that 426 sewage treatment plants have to be built; water pollution control on the route takes up 44 percent of the $5 billion investment, according to Xinhua, the official news agency. The source water from the Han River on the middle route is cleaner. But the main channel will cross 205 rivers and streams in the industrial heartland of China before reaching Beijing.
“When water comes to Beijing, there’s the danger of the water not being safe to drink,” said Dai Qing, an environmental advocate who has written critically about the Three Gorges Dam.

“I think this project is a product of the totalitarian regime in Beijing as it seeks to take away the resources of others,” she added. “I am totally opposed to this project.”

Ms. Dai and some Chinese scholars say the government should instead be limiting the population in the northern cities and encouraging water conservation.
The project’s official Web site says that the diversion “will be an important and basic facility for mitigating the existing crisis of water resources in north China” and that sufficient studies have been done. Wang Jian, a former environmental and water management official with the Beijing government and the State Council, China’s cabinet, agreed that the project “carries huge risks,” but he said there were no other options given the severity of the current water shortage.
The middle route is to start major operations in 2014, and the eastern route is expected to be operational by 2013. The lines were originally supposed to open by the 2008 Summer Olympics, but have been hobbled by myriad problems.
The diversion project was first studied in the 1950s, after Mao uttered: “Water in the south is abundant, water in the north scarce. If possible, it would be fine to borrow a little.”
In a country afflicted by severe cycles of droughts and floods and peasant rebellions that often resulted from them, control of water has always been important to Chinese rulers. Emperors sought to legitimize their rule with large-scale water projects like the Grand Canal or the irrigation system in Dujiangyan.
After the initial studies in the 1950s, the government did not look seriously again at the project until the 1990s, when north China was hit hard by droughts. In 2002, the State Council gave the green light for work to start on the middle and eastern routes; the western route, which would run at an average altitude of 10,000 to 13,000 feet across the Tibetan plateau to help irrigate the Yellow River basin, has been deemed too difficult to start for now.
Officials in Tianjin are so skeptical of the eastern route’s ability to deliver drinkable water that they are looking at desalinization as an alternative. Planners have more hope for the middle route, though the engineering is a much greater challenge — the canal has to be built entirely from scratch, with 1,774 structures constructed along its length to channel the water, since there is no pre-existing waterway like the Grand Canal to follow.
At the start of the route, the water level of the Danjiangkou Reservoir on the Han River has been raised 43 feet to 558 feet so that the water can flow downhill to Beijing. The government said the rising waters and a need to combat soil erosion necessitated moving 130,000 farmers last year from around the reservoir. Similar relocations are taking place all along the main channel, which runs through four provinces.
About 1,300 residents of Qingshan township have been moved to Xiangbei Farm, desolate land where a prison once stood. The villagers now live in sterile rows of yellow concrete houses 125 miles east of their abandoned ancestral homes. A government sign in the middle of the settlement says: “The land is fertile and has complete irrigation systems.”
The farmers know better. Each person is supposed to get a small plot of land free, but the soil here is well known to be exceedingly poor. The people also complain that in the government’s compensation formula, their old homes were undervalued, so many have had to pay several thousand dollars to buy new homes.
“There’s nothing here,” said Huang Jiuguo, 57. “There’s no enterprise. Our children are grown, and they need something to do.”
For three days last November, thousands of residents of a resettlement area in Qianjiang city blocked roads to protest poorly built homes and lack of promised compensation, according to a report by Radio Free Asia. Officials ordered the police to break up the rally, resulting in clashes, injuries and arrests.
Forced relocations, though, could pale next to larger fallouts from the project. “I think this project is a product of the totalitarian regime in Beijing as it seeks to take away the resources of others,” she added. “I am totally opposed to this project.”

Ms. Dai and some Chinese scholars say the government should instead be limiting the population in the northern cities and encouraging water conservation.
The project’s official Web site says that the diversion “will be an important and basic facility for mitigating the existing crisis of water resources in north China” and that sufficient studies have been done. Wang Jian, a former environmental and water management official with the Beijing government and the State Council, China’s cabinet, agreed that the project “carries huge risks,” but he said there were no other options given the severity of the current water shortage.
The middle route is to start major operations in 2014, and the eastern route is expected to be operational by 2013. The lines were originally supposed to open by the 2008 Summer Olympics, but have been hobbled by myriad problems.
The diversion project was first studied in the 1950s, after Mao uttered: “Water in the south is abundant, water in the north scarce. If possible, it would be fine to borrow a little.”
In a country afflicted by severe cycles of droughts and floods and peasant rebellions that often resulted from them, control of water has always been important to Chinese rulers. Emperors sought to legitimize their rule with large-scale water projects like the Grand Canal or the irrigation system in Dujiangyan.
After the initial studies in the 1950s, the government did not look seriously again at the project until the 1990s, when north China was hit hard by droughts. In 2002, the State Council gave the green light for work to start on the middle and eastern routes; the western route, which would run at an average altitude of 10,000 to 13,000 feet across the Tibetan plateau to help irrigate the Yellow River basin, has been deemed too difficult to start for now.
Officials in Tianjin are so skeptical of the eastern route’s ability to deliver drinkable water that they are looking at desalinization as an alternative. Planners have more hope for the middle route, though the engineering is a much greater challenge — the canal has to be built entirely from scratch, with 1,774 structures constructed along its length to channel the water, since there is no pre-existing waterway like the Grand Canal to follow.
At the start of the route, the water level of the Danjiangkou Reservoir on the Han River has been raised 43 feet to 558 feet so that the water can flow downhill to Beijing. The government said the rising waters and a need to combat soil erosion necessitated moving 130,000 farmers last year from around the reservoir. Similar relocations are taking place all along the main channel, which runs through four provinces.
About 1,300 residents of Qingshan township have been moved to Xiangbei Farm, desolate land where a prison once stood. The villagers now live in sterile rows of yellow concrete houses 125 miles east of their abandoned ancestral homes. A government sign in the middle of the settlement says: “The land is fertile and has complete irrigation systems.”
The farmers know better. Each person is supposed to get a small plot of land free, but the soil here is well known to be exceedingly poor. The people also complain that in the government’s compensation formula, their old homes were undervalued, so many have had to pay several thousand dollars to buy new homes.
“There’s nothing here,” said Huang Jiuguo, 57. “There’s no enterprise. Our children are grown, and they need something to do.”
For three days last November, thousands of residents of a resettlement area in Qianjiang city blocked roads to protest poorly built homes and lack of promised compensation, according to a report by Radio Free Asia. Officials ordered the police to break up the rally, resulting in clashes, injuries and arrests.
Forced relocations, though, could pale next to larger fallouts from the project.

“We feel that we are still unsure how the project is going to impact on the environment, ecologies, economies and society at large,” said Mr. Du, the geographer in Wuhan, who carefully added he was not outright opposed to the project.

The central question for people in Hubei is whether the Han River, crucial to farming and industrial production hubs, will be killed to keep north China alive.
In a paper published in the Bulletin of the Chinese Academy of Sciences, Mr. Du and two co-authors estimated that the diversion project would reduce the flow of the middle and lower stretches of the Han significantly, “leading to an uphill situation for the prevention of water pollution and ecological protection.” Though the study first appeared in 2006, the government has not altered its original plan, Mr. Du said.
Central planners decided on the amount of water to be diverted based on calculations of water flow in the Han done from the 1950s to the early 1990s; since then, the water flow has dropped, partly because of prolonged droughts, but planners have made no adjustments, Mr. Du said. The amount to be diverted is more than one-third of the annual water flow. “That will exert a huge damaging impact on the river,” he said.
The Han River is already facing enormous challenges — industries are discharging more and more pollutants, companies are dredging sand to feed construction needs in nearby cities and algal bloom has hit the river hard. The diversion of water to Beijing will add to the pressures. “If the water quality cannot be ameliorated effectively, the aquatic life populations will be further decimated,” Mr. Du and his co-authors wrote.
The diversion from the Han is necessitating more complex projects to raise water levels. One side diversion brings water from the Yangtze to the Han. Another would bring water from the Three Gorges reservoir to the Danjiangkou reservoir.
Government officials in the south are keenly aware of the changes coming to the Han. In Xiangfan, officials have shuttered some small factories like paper producers and forced others to use more nonpolluting materials, said Yun Jianli, director of the environmental advocacy group Green Han River. “The local government is very concerned about the river and impact of the diversion project,” she said.
The political conflicts are obvious. Mr. Du, a member of the provincial consultative legislature, said officials in Hubei had been in constant negotiations with officials in Beijing for compensation. In the 1990s, the central government proposed a package of water projects valued at $50 million at the time to help Hubei. After rounds of negotiations, the current proposal for supplemental water projects is estimated at more than $1 billion.
The demands of the north will not abate. Migration from rural areas means Beijing’s population is growing by one million every two years, according to an essay in China Daily written last October by Hou Dongmin, a scholar of population development at Renmin University of China. “With its dwindling water resources, Beijing cannot sustain a larger population,” Mr. Hou said. “Instead, it should make serious efforts to control the population, if not reduce it.”
Beijing has about 100 cubic meters, or 26,000 gallons, of water available per person. According to a standard adopted by the United Nations, that is a fraction of the 1,000 cubic meters, or 260,000 gallons, per person that indicates chronic water scarcity.
The planning for Beijing’s growth up to 2020 by the State Council already assumes the water diversion will work, rather than planning for growth with much less water, said Mr. Wang, the former official.
City planners see a Beijing full of golf courses, swimming pools and nearby ski slopes — the model set by the West.
“Instead of transferring water to meet the growing demand of a city, we should decide the size of a city according to how much water resources it has,” Mr. Wang said. “People’s desire for development has no end.”
“We feel that we are still unsure how the project is going to impact on the environment, ecologies, economies and society at large,” said Mr. Du, the geographer in Wuhan, who carefully added he was not outright opposed to the project.

The central question for people in Hubei is whether the Han River, crucial to farming and industrial production hubs, will be killed to keep north China alive.
In a paper published in the Bulletin of the Chinese Academy of Sciences, Mr. Du and two co-authors estimated that the diversion project would reduce the flow of the middle and lower stretches of the Han significantly, “leading to an uphill situation for the prevention of water pollution and ecological protection.” Though the study first appeared in 2006, the government has not altered its original plan, Mr. Du said.
Central planners decided on the amount of water to be diverted based on calculations of water flow in the Han done from the 1950s to the early 1990s; since then, the water flow has dropped, partly because of prolonged droughts, but planners have made no adjustments, Mr. Du said. The amount to be diverted is more than one-third of the annual water flow. “That will exert a huge damaging impact on the river,” he said.
The Han River is already facing enormous challenges — industries are discharging more and more pollutants, companies are dredging sand to feed construction needs in nearby cities and algal bloom has hit the river hard. The diversion of water to Beijing will add to the pressures. “If the water quality cannot be ameliorated effectively, the aquatic life populations will be further decimated,” Mr. Du and his co-authors wrote.
The diversion from the Han is necessitating more complex projects to raise water levels. One side diversion brings water from the Yangtze to the Han. Another would bring water from the Three Gorges reservoir to the Danjiangkou reservoir.
Government officials in the south are keenly aware of the changes coming to the Han. In Xiangfan, officials have shuttered some small factories like paper producers and forced others to use more nonpolluting materials, said Yun Jianli, director of the environmental advocacy group Green Han River. “The local government is very concerned about the river and impact of the diversion project,” she said.
The political conflicts are obvious. Mr. Du, a member of the provincial consultative legislature, said officials in Hubei had been in constant negotiations with officials in Beijing for compensation. In the 1990s, the central government proposed a package of water projects valued at $50 million at the time to help Hubei. After rounds of negotiations, the current proposal for supplemental water projects is estimated at more than $1 billion.
The demands of the north will not abate. Migration from rural areas means Beijing’s population is growing by one million every two years, according to an essay in China Daily written last October by Hou Dongmin, a scholar of population development at Renmin University of China. “With its dwindling water resources, Beijing cannot sustain a larger population,” Mr. Hou said. “Instead, it should make serious efforts to control the population, if not reduce it.”
Beijing has about 100 cubic meters, or 26,000 gallons, of water available per person. According to a standard adopted by the United Nations, that is a fraction of the 1,000 cubic meters, or 260,000 gallons, per person that indicates chronic water scarcity.
The planning for Beijing’s growth up to 2020 by the State Council already assumes the water diversion will work, rather than planning for growth with much less water, said Mr. Wang, the former official.
City planners see a Beijing full of golf courses, swimming pools and nearby ski slopes — the model set by the West.
“Instead of transferring water to meet the growing demand of a city, we should decide the size of a city according to how much water resources it has,” Mr. Wang said. “People’s desire for development has no end.”

371. Climate Change: Scientists Try Assessing Impact on Species Survival


ScienceDaily, June 4, 2011 

As global temperatures rise, suitable sites for many plants and animals are shifting to cooler and higher ground. Can we predict which species will be able to move far or fast enough to keep up? A new study says the secrets to success in the face of a warming world are still elusive.

Rather than sticking around and sweating it out, some groups of plants and animals are responding to rising temperatures by migrating northward and upward to higher latitudes and elevations, studies show.

But when researchers working at the National Evolutionary Synthesis Center and the National Center for Ecological Analysis and Synthesis took a closer look at recent range shifts, they noticed a peculiar pattern: some species are migrating much farther and faster than others.

"Some species are moving well ahead of the curve, while others seem to be stuck behind," said lead author Amy Angert, a biologist at Colorado State University.
Pinpointing what sets the fastest-shifting species apart from the stragglers could help scientists and policymakers predict which species are likely to be left behind in a warming world, the researchers said.

"The species that aren't able to expand their range are the ones we need to spend more resources protecting," said co-author Sarah Gilman of Claremont McKenna College in California.

The researchers wondered if general traits such as body size, diet and lifespan might help scientists predict which species are likely to keep pace as weather warms.

To find out, they looked at data gathered from more than 400 species of birds, plants, insects and mammals known to have shifted their ranges to different degrees in the last century in response to warming.

The data set included North American birds such as house finches and bald eagles, dragonflies and damselflies in Europe, grasses and other plants in the Swiss Alps, and small mammals such as shrews, mice and chipmunks in the Sierra Nevada of California.

The species quickest to expand their range should be those that reproduce the fastest, disperse the farthest, and are the least picky about food, shelter, or mates, models predict.

To find out if predictions hold true, the researchers compiled data on how far each species had shifted, and compared it to various intrinsic features of the species themselves, such as their mode of dispersal, breeding rate, and dietary preferences.

The result? Global warming's winners and losers may be hard to predict based on broad traits related to dispersal ability or reproduction, the researchers explained.

"For each group we found one or more traits that do explain some variation in recent range shifts, but none with clear influence across all groups," wrote Angert, who studies the effects of climate change on range shifts in monkeyflowers.

One possibility is that the traits that really matter for a species' ability to move to more suitable sites -- such as temperature tolerance -- are difficult to measure or find a proxy for, the authors argue.

Another possibility is that external factors, such as habitat fragmentation and availability, may be just as important as the species themselves. Plants and animals on mountain peaks or near the poles may simply have nowhere cooler to go, the researchers explained.

The findings were published in Ecology Letters.

Other authors on the paper include Lisa Crozier of the Northwest Fisheries Science Center in Seattle, Leslie Rissler of the University of Alabama, Josh Tewksbury of the University of Washington, and Amanda Chunco of the University of North Carolina at Chapel Hill.


Story Source:
The above story is reprinted (with editorial adaptations by ScienceDaily staff) from materials provided by National Evolutionary Synthesis Center (NESCent), viaEurekAlert!, a service of AAAS.

Journal Reference:
  1. Amy L. Angert, Lisa G. Crozier, Leslie J. Rissler, Sarah E. Gilman, Josh J. Tewksbury, Amanda J. Chunco. Do species’ traits predict recent shifts at expanding range edges? Ecology Letters, 2011; DOI: 10.1111/j.1461-0248.2011.01620.x

370. Spiders Suffer from Human Impact


This is a tarantula (Lycosa tarantula) in Doñana.
(Credit: Samuel Prieto-Benítez)

ScienceDaily, May 23, 2011

Researchers from the King Juan Carlos University (URJC) have carried out a research study published in Biological Conservation, which looked at whether spiders were more tolerant of human impact than other animals. The answer was no: arachnids suffer the consequences of changes to their landscape just like any other animal.

"The abundance and number of spider species is negatively affected by the impact of many human land uses, such as habitat fragmentation, fire and pesticides," Samuel Prieto-Benítez and Marcos Méndez, researchers at the URJC Biodiversity and Conservation Department, said.

Given the "scarcity" of threatened spiders on the Red Lists, which are very in vogue at the moment, the researchers tried to find out whether spiders are exempt from the risks caused by human action, by means of a meta-study of a total of 173 scientific papers published since 1980, which provide more generalizable data.

"The technique used meant we could rigorously combine the results of a lot of studies. This is regularly used in medicine in order to arrive at general conclusions about the effects of drugs, based on numerous trials with more limited coverage," say Prieto-Benítez and Méndez, who studied the human impact in three ecosystems: farmland, pasture and woodland.

Until now, fewer than 20% of studies had indicated any negative effects of human impact on arachnids. The study, which has been published in Biological Conservation, demonstrates "evident" damaging effects on spider numbers due to the use of soil in farming and pasture systems. "In woodlands this was not so clear," the study explains.

Growing threats

In farming and pasture ecosystems all over world, fires, sheep-grazing and conventional crops have a harmful effect on arachnid fauna because they cause extreme changes to the vegetation structure. Spider abundance is affected in woodland by habitat fragmentation.

Insecticides also have a negative effect on spider diversity in agricultural and pasture ecosystems. The researchers show in the study that organic farming is more beneficial to arachnid abundance than conventional agriculture, but that these effects depend on the complexity of the landscape.

The study proposes some solutions for spider conservation. A reduction in mechanical alterations to the land, such as harvesting, ploughing and grazing would increase spider diversity in agricultural and pastural ecosystems. In addition, the use of insecticides should be more controlled, as in organic farming, and habitat fragmentation should be avoided.

According to the authors, although "they do not enjoy an excessive level of public sympathy," spiders are an important animal group for humans, since they free us of a large number of pest insects and are "very important" predators in the functioning of natural systems.


Story Source:
The above story is reprinted (with editorial adaptations by ScienceDaily staff) from materials provided by FECYT - Spanish Foundation for Science and Technology, viaEurekAlert!, a service of AAAS.

Journal Reference:
  1. Samuel Prieto-Benítez, Marcos Méndez. Effects of land management on the abundance and richness of spiders (Araneae): A meta-analysisBiological Conservation, 2011; 144 (2): 683 DOI: 10.1016/j.biocon.2010.11.024

369. Climate Played Big Role in Vikings' Disappearance from Greenland


ScienceDaily, May 31, 2011

Greenland's early Viking settlers were subjected to rapidly changing climate. Temperatures plunged several degrees in a span of decades, according to research from Brown University. A reconstruction of 5,600 years of climate history from lakes near the Norse settlement in western Greenland also shows how climate affected the Dorset and Saqqaq cultures. Results appear in Proceedings of the National Academy of Sciences.

The end of the Norse settlements on Greenland likely will remain shrouded in mystery. While there is scant written evidence of the colony's demise in the 14th and early 15th centuries, archaeological remains can fill some of the blanks, but not all.

What climate scientists have been able to ascertain is that an extended cold snap, called the Little Ice Age, gripped Greenland beginning in the 1400s. This has been cited as a major cause of the Norse's disappearance. Now researchers led by Brown University show the climate turned colder in an earlier span of several decades, setting in motion the end of the Greenland Norse. Their findings appear in Proceedings of the National Academy of Sciences.

The Brown scientists' finding comes from the first reconstruction of 5,600 years of climate history from two lakes in Kangerlussuaq, near the Norse "Western Settlement." Unlike ice cores taken from the Greenland ice sheet hundreds of miles inland, the new lake core measurements reflect air temperatures where the Vikings lived, as well as those experienced by the Saqqaq and the Dorset, Stone Age cultures that preceded them.

"This is the first quantitative temperature record from the area they were living in," said William D'Andrea, the paper's first author, who earned his doctorate in geological sciences at Brown and is now a postdoctoral researcher at the University of Massachusetts-Amherst. "So we can say there is a definite cooling trend in the region right before the Norse disappear."

"The record shows how quickly temperature changed in the region and by how much," said co-author Yongsong Huang, professor of geological sciences at Brown, principal investigator of the NSF-funded project, and D'Andrea's Ph.D. adviser. "It is interesting to consider how rapid climate change may have impacted past societies, particularly in light of the rapid changes taking place today."

D'Andrea points out that climate is not the only factor in the demise of the Norse Western Settlement. The Vikings' sedentary lifestyle, reliance on agriculture and livestock for food, dependence on trade with Scandinavia and combative relations with the neighboring Inuit, are believed to be contributing factors.

Still, it appears that climate played a significant role. The Vikings arrived in Greenland in the 980s, establishing a string of small communities along Greenland's west coast. (Another grouping of communities, called the "Eastern Settlement" also was located on the west coast but farther south on the island.) The arrival coincided with a time of relatively mild weather, similar to that in Greenland today. However, beginning around 1100, the climate began an 80-year period in which temperatures dropped 4 degrees Celsius (7 degrees Fahrenheit), the Brown scientists concluded from the lake readings. While that may not be considered precipitous, especially in the summer, the change could have ushered in a number of hazards, including shorter crop-growing seasons, less available food for livestock and more sea ice that may have blocked trade.

"You have an interval when the summers are long and balmy and you build up the size of your farm, and then suddenly year after year, you go into this cooling trend, and the summers are getting shorter and colder and you can't make as much hay. You can imagine how that particular lifestyle may not be able to make it," D'Andrea said.

Archaeological and written records show the Western Settlement persisted until sometime around the mid-1300s. The Eastern Settlement is believed to have vanished in the first two decades of the 1400s.

The researchers also examined how climate affected the Saqqaq and Dorset peoples. The Saqqaq arrived in Greenland around 2500 B.C. While there were warm and cold swings in temperature for centuries after their arrival, the climate took a turn for the bitter beginning roughly 850 B.C., the scientists found. "There is a major climate shift at this time," D'Andrea said. "It seems that it's not as much the speed of the cooling as the amplitude of the cooling. It gets much colder."

The Saqqaq exit coincides with the arrival of the Dorset people, who were more accustomed to hunting from the sea ice that would have accumulated with the colder climate at the time. Yet by around 50 B.C., the Dorset culture was waning in western Greenland, despite its affinity for cold weather. "It is possible that it got so cold they left, but there has to be more to it than that," D'Andrea said.

Contributing authors include Sherilyn Fritz from the University of Nebraska-Lincoln and N. John Anderson from Loughborough University in the United Kingdom. The National Science Foundation funded the work.


Story Source:
The above story is reprinted (with editorial adaptations by ScienceDaily staff) from materials provided by Brown University.

Saturday, June 4, 2011

368. One Billion Live in Hunger Due to Poverty, UN Says


A majority of the world's hungry are women and children
By Kanya D'Almeida, IPS, June 3, 2011

WASHINGTON, Jun 3, 2011 (IPS) - Today one billion people are living in hunger, not because of scarcity of production or a shortage of food on shelves in the global marketplace, but because they "lack the most basic purchasing power needed to acquire it", Olivier De Schutter, the United Nations Special Rapporteur on the Right to Food, said Thursday.

Currently, 35-40 percent of harvests are lost due to inadequate transportation and storage facilities, while a further 35-40 percent goes to wealthy Organization for Economic Cooperation and Development (OECD) countries.

According to experts like De Schutter, the inability of 10 percent of the world's population to feed itself is also a reflection of unsustainable patterns of consumption and deeply flawed models of industrialised agricultural production which, if allowed to continue, will divert 50 percent of global cereal harvests towards feeding cattle by the year 2050.

"From the food crisis in 1974, to the crisis in 2007-2008, and even now during the food crisis of 2010-2011, governments have had the same Pavlovian reaction - to increase production in order to lower prices and alleviate the burden of food price inflation on the population," De Schutter said at a panel discussion in Washington.


He added that while the reaction was understandable, it has been undeniably proven to be incomplete, short-sighted and based on an inadequate diagnosis of the complexity of the problem.

"A food system that is increasingly industrialised and commodified is not the only one available to us," he stressed. "We can and must re- imagine other food systems that take numerous social dimensions into account."

Inter-connected crises

In his recent report "Agroecology and the Right to Food", which was presented to the Human Rights Council in March this year, De Schutter outlines the global hunger catastrophe as an amalgamation of three distinct but inherently inter-related problems.

These are poverty, caused by trade policies that dump heavily- subsidised produce from developed countries on third world markets, thus rendering local farmers jobless; environmental degradation brought on by industrialised farming, which now accounts for nearly one-third of global green house gas emissions; and an epidemic of malnutrition caused by the colonising effects of mono-crops and a flood of processed food from the global north to the global south.

Only by examining these three challenges together can a strategy for ending hunger be successfully designed and implemented, he argues.

A study released Friday by the Consultative Group on International Agricultural Research (CGIAR)'s programme on Climate Change, Agriculture and Food Security (CCAFS) bolstered this argument by identifying future climate change "hotspots" in countries already crippled by severe food shortages and chronic hunger.

By consolidating detailed maps of scores of different agricultural regions across the world, the seven scientists behind the study tracked the impacts of climate change on food security and identified highly-vulnerable populations - principally in Africa and South Asia, with dark clouds hanging over China and parts of Latin America as well - that would suffer the double blows of hunger and environmental crisis.

"When you put these maps together they reveal places around the world where the arrival of stressful growing conditions could be especially disastrous," Polly Ericksen, lead author of the study and a senior scientist at the CGIAR's International Livestock Research Institute (ILRI) in Nairobi, Kenya, told the press in Copenhagen Friday.

"These are areas highly exposed to climate shifts, where survival is strongly linked to the fate of regional crop and livestock yields, and where chronic food problems indicate that farmers are already struggling and they lack the capacity to adapt to new weather patterns,” she said.

Swathes of South Asia, including virtually all of India's territory and vast areas of sub-Saharan Africa are home to 369 million food- insecure people, all of whom live in climate-vulnerable, agriculture- intensive areas.

Over 56 million hungry and crop-dependent people in West Africa, India and China inhabit areas which, in less than 40 years, will likely experience daily growing season temperatures of 30 degrees Celsius - virtually impossible conditions for essential crops like corn and rice.

Reimagining food systems

In 2006, a team of researchers from the University of Essex carried out a study on "agro-ecological" approaches to farming and development.

Spanning 57 developing countries and 286 different models of sustainable farming techniques in an area covering 37 million hectares - three percent of cultivated land - the study unearthed how low external-input farming that utilized surrounding ecosystems and cyclical practices resulted in a 79 percent yield increase, more than double the average yield under the normalised agricultural system.

Agro-ecology, which includes systems that produce their own fertiliser using materials and waste from the surrounding environment, is being increasingly viewed as the only viable solution to the hunger crisis. Since prices of fertiliser doubled during the 2008 food crisis, continents like Africa that import 95 percent of their chemical fertilisers could see radically different outcomes in production by adopting agro-ecological techniques.

Analysing the data from the 2006 study by region, the International Fund for Agricultural Development (IFAD) found that in some parts of Africa the yield increase was a stunning 213 percent.

However, De Schutter warned, this agricultural "revolution" will not come about by chance but will require swift and determined government action.

In addition to investing in education, gender-sensitive solutions and public goods and services such as the infrastructure required to nurture farmers' unions and peasant cooperatives, De Schutter's recommendations to governments include an urgent appeal to revolutionize markets to reward best-practices rather than short-term profit.

"The market as it exists today is too focused on global supply chains and does not give enough importance to local farmers, and producers of diversified crops," De Schutter told IPS.

"Governments must move away from export-led supply models and reinvest heavily in regional, sustainable food systems."

He added that governments should set solid agendas, which development agencies and private sector actors would align with, that incorporate a cultural shift away from a broken structure and towards a visionary, resilient food future. 

Friday, June 3, 2011

367. Questions of Race in Cuba


Esteban Morales

By Center for International Policy, Sacramento Bee, June 2, 2011

Washington--Today, the Center for International Policy hosted an all-day conference that explored the notion and implications of racism and racial identity in Cuba as the Afro-Cuban population struggles with widespread discrimination.  When Castro seized power in 1959, he declared Cuba a "raceless" society under the Communist project; however, socioeconomic disparities on racial lines remain clear.  Once considered taboo, discussions on race are becoming more prevalent in Cuba with the creation of National Union of Writers and Artists of Cuba (UNEAC) "Cuban Color" working groups and other race-related government organizations committed to dismantling barriers.

"The United States and Cuba share a common challenge.  Both have black minority populations and thus residual traces of racism; both must focus on how to eliminate these inconsistencies," said Wayne Smith, director of the Cuba project at the Center for International Policy.

To Smith, the conference's primary goal was "to understand how the Cubans are approaching the problem, with some commentary on its approach from the American perspective."  The participants discussed the implications of race on the Cuban nation, Afro-Cuban initiatives striving for racial equality, and the effect on these issues on U.S.-Cuban relations.

Conference panelists included Wayne Smith; James Early, Smithsonian Center of Folklife and Cultural Heritage; Esteban Morales, Center for the Study of U.S.-Cuban Relations; Heriberto Feraudy, Cuban Commission against Racism; Luis Murillo, Phelps Stokes; Julia Sweig, Council on Foreign Relations; and Philip Brenner, American University.  Emira Woods of the Institute of Policy Studies, Mwiza Munthali of TransAfrica Forum, and Sarah Stephens of the Center for Democracy in the Americas moderated the panels.

Esteban Morales underscored the importance of race in today's political discourse: "The topic of race is intimately connected with others, such as the economy, human rights, inequality, and social justice.  Avoiding the topic for so long has been a serious risk for the solid unity of the Cuban nation because national unity must be achieved by the construction of consensus among civil society."

By addressing these issues at the conference, James Early believes that the conference ultimately "supports the positive efforts of the Cuban people and the government to advance the interrelated goals of social equality, political and cultural democracy, and economic development."

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By Juan O. Tamayo, Miami Herald, June 3, 2011

Washington, D.C. The Cuban government will soon cast a media spotlight on the issue of racism on the island, although some programs to improve the lives of black Cubans had to be cut because of economic restraints, a Havana official said Thursday.
Heriberto Feraudy, who heads the quasi-official Cuban Commission against Racism, also said the popularity of Afro-Cuban religions is soaring and indicated that Raúl Castro’s economic reforms may not help blacks as much as whites.
Feraudy, who served 15 years as ambassador to five African nations, and Esteban Morales, a well-known Havana economist who writes often on race, addressed a conference on the issue sponsored by the Center for International Policy, a think tank.
Their unusually frank comments — for decades Cuba officially denied the existence of discrimination on the island — seemed to reflect the growing concern over race issues as the country drops some of its socialist policies and embraces more private enterprise.
Feraudy and Morales — both black — argued that the Fidel and Raúl Castro governments have done more for Cuban blacks since 1952 than any other government in the previous centuries.
“The problem of a division in Cuba (due to racial issues) is not possible,” said Morales, who was reportedly suspended from the Communist Party last year after he wrote a column complaining about the island’s burgeoning official corruption.
But both also agreed that racism persists on the island, and that the issue needs to be discussed and confronted even though “many people” in Cuba argue that the Castro revolution did away with racial discrimination.
Feraudy said some programs adopted under Fidel Castro to help blacks “had to be terminated” because of a shortage of resources — he gave no further details — but added that his commission is pushing for a broad discussion of the race issue.
Cuban state television will soon launch a one-year run of programs on Africa and its importance to the island, he said, and the parliamentary National Assembly of People’s Power has agreed to take up the issue in one of its coming sessions.
Morales joked that some Cubans, “even at some levels of power,” argue that all race problems in Cuba disappeared after 1959 because the revolutionary government outlawed discrimination “and we are very good people.”
Now racism is a “democratic issue that we must discuss in Cuba” with all of civil society, he added. But the discussion must be handled carefully to avoid simply raising concerns without providing answers.
Feraudy noted that Raúl Castro has called for an increase of blacks in top positions and that the Central Committee of the ruling Communist Party selected last month showed a 10 percent increased in the number of black and mestizo members.
But he indicated that he agreed with widespread concerns that Castro’s proposals to boost the economy by allowing more private enterprise and slashing government payrolls subsidies would hit blacks harder than whites.
Whites receive more remittances from abroad, which could be used to start one the newly legalized businesses, because most exiles are white, he noted.
Feraudy’s committee was created two years ago by the government-controlled Cuban Union of Writers and Artists (UNEAC) as black dissidents began using the language of black U.S. activists to attack the Castro governments.