Thursday, February 21, 2013

Climate change is not an all-or-nothing proposition, researcher says

Pam Frost Gorder in Ohio State University Research and Innovation Communications: An Ohio State University statistician says that the natural human difficulty with grasping probabilities is preventing Americans from dealing with climate change. In a panel discussion at the American Association for the Advancement of Science meeting on Feb. 15, Mark Berliner said that an aversion to statistical thinking and probability is a significant reason that we haven’t enacted strategies to deal with climate change right now.

Berliner, professor and chair of statistics at Ohio State, is the former co-chair of the American Statistical Association’s Advisory Committee on Climate Change Policy, and as such, he spent two years talking with U.S. Congressional staffers about climate change. As a result, he’s come to the conclusion that Americans need to understand that climate change is a range of possible events that are more or less likely. However, the negative impacts of climate change can be reduced by taking some moderate actions today, he said.

“The general public has an understanding of tipping points, the moment beyond which things become inevitable. But as soon as you start thinking of climate change as inevitable, it’s easy to throw up your hands and say, ‘it’s too late, so why bother to do anything?’” Berliner said. “It’s like a two-pack-a-day smoker deciding not to cut back on the cigarettes, because he’s as good as gone.”

“The situation is not hopeless. Instead of taking an extreme all-or-nothing view about climate change, we can think of it as a spectrum of possible problems, and look for a spectrum of practical solutions that will do the most good,” he said. From his own career in climate research, Berliner sees climate change as a collection of possible events: some extreme disasters that are unlikely to happen, but still possible; and less extreme events that are much more likely.

It’s the difference, he said, between the low possibility that a coastal town will flood permanently, versus the high possibility that high tides and periodic floods will force the town to close its beaches for more days during the year—a loss to valuable tourism.

It’s human nature to abhor uncertainty, he said, and climate research, like all research, is full of uncertainty. He hopes that opinion leaders will help the public understand the nature of science, and the idea that uncertainties diminish as data accumulates. There will never be a single right answer to the question “what will happen to Earth’s climate?”

“One of the criticisms of climate change research is that different computer models give different answers,” Berliner said. “But the key is not to pick the right climate model, but to pick the right elements out of each of the models.”

As he calculates the effectiveness of potential climate change mitigation strategies, Berliner has determined one thing for sure. “Compromise—if it leads to doing something—is better than doing nothing,” he said....

From 1767, Claude Joseph Vernet's "A storm on the Mediterranean coast"

New projections of 'uneven' global sea-level rise

EurekAlert via the British Antarctic Survey: Sophisticated computer modelling has shown how sea-level rise over the coming century could affect some regions far more than others. The model shows that parts of the Pacific will see the highest rates of rise while some polar regions will actually experience falls in relative sea levels due to the ways sea, land and ice interact globally.

Reporting in the journal Geophysical Research Letters researchers have looked ahead to the year 2100 to show how ice loss will continue to add to rising sea levels. Scientists have known for some time that sea level rise around the globe will not be uniform, but in this study the team of ice2sea researchers show in great detail the global pattern of sea-level rise that would result from two scenarios of ice-loss from glaciers and ice sheets.

The team, from Italy's University of Urbino and the UK's University of Bristol, found that ice melt from glaciers, and the Greenland and Antarctic ice sheets, is likely to be of critical importance to regional sea-level change in the Equatorial Pacific Ocean where the sea level rise would be greater than the average increase across the globe. This will affect in particular, Western Australia, Oceania and the small atolls and islands in this region, including Hawaii.

The study focussed on three effects that lead to global mean sea-level rise being unequally distributed around the world. Firstly, land is subsiding and emerging due to a massive loss of ice at the end of the last ice age 10,000 years ago when billions of tons of ice covering parts of North America and Europe melted. This caused a major redistribution of mass on the Earth, but the crust responds to such changes so slowly that it is still deforming. Secondly, the warming of the oceans leads to a change in the distribution of water across the globe. Thirdly the sheer mass of water held in ice at the frozen continents like Antarctica and Greenland exerts a gravitational pull on the surrounding liquid water, pulling in enormous amounts of water and raising the sea-level close to those continents. As the ice melts its pull decreases and the water previously attracted rushes away to be redistributed around the globe.

Co-author Professor Giorgio Spada says, "In the paper we are successful in defining the patterns, known as sea level fingerprints, which affect sea levels. "This is paramount for assessing the risk due to inundation in low-lying, densely populated areas. The most vulnerable areas are those where the effects combine to give the sea-level rise that is significantly higher than the global average."....

From NASA, the first flight of Operation Ice Bridge’s Antarctic campaign flew Oct. 16, 2009, along the Amundsen Coast. The aircraft’s downward-looking Digital Mapping System camera captured images of sea ice from an altitude of at least 20,000 feet.

Child-friendly toilets key in fight to improve global sanitation

Julie Mollins in AlertNet: If toilets meet children’s needs, this will keep them in school longer, reduce the spread of life-threatening diarrhoeal diseases and help meet development goals, according to the charity Water For People. At least 2.5 billion people worldwide do not have proper sanitation facilities. The combined effects of improper sanitation, unsafe water supply and poor hygiene are estimated to cause almost 2,000 child deaths per day, the U.N. children’s agency, UNICEF, reports.

“Allowing youth to become comfortable using toilets and practising good hygiene from a young age, means that as they grow up there are fewer people to educate and convince of the reasons that improved toilets are important,” said Kate Fogelberg, Water For People’s regional manager in South America.   “It’s much more difficult to change adult behaviour than children’s behaviour -- solving the sanitation crisis is as much about changing people’s behaviour as it is about installing toilets.”

Governments are not on course to meet the Millennium Development Goal (MDG) target of halving the proportion of the population without sanitation by 2015 -- one of eight targets agreed in 2000 by U.N. member states.

Water For People works with partners in Africa, Asia and Latin America to deliver improved water and sanitation services, part of its goal to ensure that every household, school and  clinic has access to water and sanitation.

“Children spend several hours a day at school, so improving toilets both at home and at school is crucial to solving the sanitation crisis,” Fogelberg said. “At schools, constructing hand washing stations with taps at varying heights makes it more accessible for children to wash their hands and creates a more hygienic environment.”...

Advance promises to expand biological control of crop pests

Seed Daily via SPX: A new discovery promises to allow expanded use of a mainstay biological pest control method, which avoids the health, environmental and pest-resistance concerns of traditional insecticides, scientists are reporting. The advance toward broadening applicability of the so-called sterile insect technique (SIT) appears in the journal ACS Synthetic Biology.

Luke Alphey and colleagues explain that the Lepidoptera, a large family of insects with a caterpillar stage, cause widespread damage worldwide to cotton; apples, pears and other fruits; and vegetable crops like broccoli, Brussels sprouts and cabbage.

Farmers usually battle these pests with traditional insects, with little use of SIT, despite its many advantages. SIT involves mass release of radiation-sterilized insects, which mate but produce no offspring, thus reducing the population of pests.

Alphey's team focused on eliminating major drawbacks that discourage wider use of SIT: They include difficulty in producing male-only sterile insects without the use of radiation, which reduces their ability to compete with wild males for mates. The scientists describe development of a synthetic genetic system that produces vigorous adult males with lethal information encoded in their sex-determination genes....

From 1894, Otto Staudinger, [1894]Hochlandine Lepidoptera Dt. Ent. Z. Iris 7 (1) : 43-100, plate 2. A wide variety of Lepidoptera

Malawi's bountiful harvests and healthier children

Michigan State University News: Through research led by Michigan State University, crop yields have increased dramatically. The children of Ekwendi, Malawi, also have gained weight and are taller. These improvements bring smiles to Sieglinde Snapp, MSU ecologist, and other researchers who have worked in Malawi for many years.

Snapp, a crop and soil scientist at MSU’s Kellogg Biological Station, shared the secrets of the initiative’s success at the annual meeting of the American Association for the Advancement of Science Feb. 14-18 in Boston.

One of the focal points of her research has been improvements in crop diversity and soil health, which have increased yields. Snapp has worked with local scientists, hospital staff and extension workers to rotate cereal grains with bushy legumes, which sparks soil improvement without relying solely on fertilizers.

Crop model simulations, long-term field trials and on-farm experimentation highlight which combinations of legumes, cereals and soil management are best at using resources efficiently. Rotating corn with pigeonpea mixtures (a shrubby legume) keeps the soil from being stripped of nutrients, such as nitrogen, while increasing nutrient-rich grain productivity.

“Participatory action research combined with access to new seeds of bushy food legumes has helped spread a mantle of green across the countryside and help achieve greater food security,” Snapp said. “There have been notable gains in dietary diversity and increased child health in hundreds of farm communities of Northern Malawi – a truly sustainable project.”

Malawi farmers, many of whom are women, also play a critical role in the program’s success. They have embraced the initiative and constantly look to improve their efforts through testing of crop rotations, nutrient-enriched legumes, drought-tolerant crops and staple cereals. Working together, the entire team will help cope with a changing world, Snapp added....

Sorghum in Malawi, shot by Swathi Sridharan, Wikimedia Commons via Flickr, under the Creative Commons Attribution-Share Alike 2.0 Generic license

Wednesday, February 20, 2013

Drought problems require new thinking

An op-ed by Neil S. Grigg in the Coloradoan: Benjamin Franklin might as well have been talking about Colorado when he said, “When the well is dry, we know the worth of water.” This truism is reverberating right now across the Midwest with a severe drought and major losses to agriculture and the environment. In some places it started in 2011, when the country set a record in July for the greatest recorded extent of exceptional drought. A year later the extent of all drought in the U.S. set another record.

While history shows that droughts end eventually, the underlying problem of water scarcity in Colorado is worrisome. Studies show that our demands are outstripping supplies, even in normal years, and something must change if we are to adapt successfully. Water scarcity is a worldwide issue due to climate change, population growth and rising aspirations. In some places, it could even spark wars between upstream and downstream states. Here in Colorado, we have wells cut off, ski areas looking for snow, looming water restrictions, and threats to our fisheries and water-related biodiversity.

What can be done? There is plenty of advice about urban water conservation, but how can we balance water security for all necessary uses with favorable outcomes to the economy, environment and society? This challenge is hard to understand because water is a unique resource and problems can’t be solved by magic bullets. Sometimes water is a commodity to be sold, and sometimes it is a resource needed for public and environmental uses as it moves from place to place. It’s hard to put water management in a box, because neither the market nor the government has all the answers.

Often, the result of proposals for water improvement is conflict over what to do. Some conflict is good because it sharpens our understanding of shared values and needs, but evidence shows that conflict often leads to government regulation and court decisions that cost a lot without making much improvement. New institutions for problem-solving and cooperation are needed. Should they be new government agencies and rules, or what should they be?....

A dried up lake in Oklahoma, shot by Al Jazeera English, Wikimedia Commons via Flickr,under the Creative Commons Attribution-Share Alike 2.0 Generic license

A gap in weather satellite coverage is a high risk

Satellite Today: The U.S. Government Accountability Office has officially labeled the forthcoming gap in weather satellite coverage as high risk. Solving this problem was one of two new issues added to the office’s list of high-risk programs and topics, which is updated every two years.

According to reports, during a House Oversight and Government Reform Committee hearing, U.S. Comptroller General Gene Dodaro said: "right now, gaps in polar orbiting satellites that provide early, midday and afternoon warnings to feed computer weather prediction models and provide 3-, 4- and 7-day forecasts [could] occur as early as 2014, and could last up to 53 months."

Studies indicate that without American polar orbiting satellites, meteorologists wouldn’t have been able to predict Hurricane Sandy’s turn west into the U.S. coast, which saved many lives and help the country prepare.

GOA has suggested that congressional oversight is necessary to address the problem and work together with the National Oceanic and Atmospheric Administration, which has been working on this problem for 10 years.

In 2002, the Department of Defense, NOAA and NASA formed the National Polar-orbiting Operational Environmental Satellite System (NPOESS), which was supposed to replace the aging polar satellites. However, amid schedule delays and budget issues, the program disbanded in 2010. NOAA then established the Joint Polar Satellite System (JPPS) program, but even with NASA’s help, 2017 is the nearest date expected for a polar orbiting satellite replacement.

While NOAA has a few options on the table to reduce the duration of the gap, it seems inevitable that it will last for at least four years, and the agency would have to make difficult financial decisions....

NASA’s newest Earth-observing satellite soared into space aboard a Delta II rocket after liftoff on October 28, 2011. The National Polar-orbiting Operational Environmental Satellite System Preparatory Project, or NPP, blasted off at 2:48 a.m. Pacific Daylight Time from Space Launch Complex 2 at Vandenberg Air Force Base in California. Shot by NASA's Earth Observatory, Wikimedia Commons via Flickr, under the Creative Commons Attribution 2.0 Generic license

A giant cistern for Tuvalu

Scoop: A cistern that can hold 700,000 litres of water has been gifted to the community of Lofeagai in Tuvalu under the Pacific Adaptation to Climate Change Project (PACC). This will help build resilience and reduce vulnerability of the community when it comes to water shortages. Last year Tuvalu went through one of its driest spells ever with very little rainfall over an 8 month period, bringing the country into a national state of emergency.

It is challenges like these that the regional PACC project hopes to empower Pacific communities to address. “We frequently experience water shortage in Tuvalu so the PACC support has come at a critical time to help us tackle this and address these issues on the spot,” said the Tuvalu PACC Project Coordinator, Ms. Loia Tausi.

“Through this project, we have managed to give the people of Lofeagai a major reserve of 700,000 litres of water so they have this extra supply to fall back on in their time of need.”

The Pacific Adaptation to Climate Change Project began in 2009 and spans 14 island countries, focusing on three key areas; food production and food security, coastal management capacity and water resource management. It helps countries identify a project under one of the key areas and strengthens education and awareness as well as develops a pilot project to build resilience and reduce vulnerability.

In Tuvalu water resource management was the priority area selected after much consultation. While the average person is estimated to consume 100 litres of water per day, in Tuvalu due to the water shortages they are limited to 40 litres per person per day. In times of extreme drought events this is lowered even further to 20 litres of water per person per day....

Sunset on Tuvalu, shot by INABA Tomoaki, Wikimedia Commons via Flickr, under the Creative Commons Attribution-Share Alike 2.0 Generic license

Himachal to construct mega water supply schemes

Water World via India Blooms News Service: Himachal Pradesh Irrigation and Public Health Minister Vidya Stokes on Tuesday said the state government will construct mega water supply schemes covering cluster of existing schemes based on large perennial sources . She made the comments while speaking at the National consultation with States on the Rural Drinking Water and Sanitation Sector in New Delhis Vigyan Bhawan.

She said that at present 8411 water supply schemes are providing potable water to a population of over 6 million and most of these schemes are based on local resources that are more prone to the adverse effects of climate change, thereby resulting in slippage of habitations and thus necessitating source level augmentation.

She said the state government has formulated eight mega water supply schemes having total cost of Rs. 165 crore benefiting 1.50 lakh population spread over 1105 habitations on the concept of village water security and requested the central government to provide additional funds to the tune of Rs. 165 crore to take up execution of these schemes in the next three years.

Stokes said that at present three such schemes are being executed under Rs. 150 crore grant under the 13th Finance Commission award. Two schemes in Kangra district have been commissioned while the third one based on Kol dam in Bilaspur district will be completed during 2013-14....

A stream in Manali, in Himachal Pradesh, shot by Shahnoor Habib Munmun, Wikimedia Commons, under the Creative Commons Attribution 3.0 Unported license

Fighting fire in Africa

Joe DeCapua in Voice of America: In African savannahs, or grasslands, wildfires can either be destructive or beneficial. It all depends on when those fires occur. Scientists at the World Agroforestry Center have developed a system to determine the best time to set the savannahs ablaze.

Savannahs stretch across many parts of Africa. But scientists concentrated their research on grassland conditions similar to the Sahel and South Sudan. When wildfires spread uncontrolled, the heat and flames can cause damage on several levels.

“Many components of the ecosystem can be affected. The biodiversity itself, the soil composition and structure and gas emission and greenhouse gas emission into the atmosphere,” said Cheikh Mbow, senior climate change scientist with the World Agroforestry Center in Nairobi, Kenya.

“Fire is seen as one of the biggest drivers of deforestation in some ecosystems. And it contributes widely to the reduction of the ecosystem services, which [are] the basis of most of the livelihoods in Africa in poverty conditions. So we are worrying about fire because of the many impacts and implications for the human beings.” Fires in savannahs are common.

“If you look at African images from [a] satellite in the dry season, it appears that most of the ecosystem, which has some level of dryness, will have fires on a regular basis. There have been many attempts in the past, since colonial time actually, to, sort of, ban fire in our ecosystem, but they never succeeded. They never succeeded because fire is a tool,” said Mbow....

Aftermath of a fire in Tanzania, shot by Nevit Dilmen, Wikimedia Commons,  under the Creative Commons Attribution-Share Alike 3.0 Unported license

Tuesday, February 19, 2013

Drought ready to deal another blow to US midwest corn, soy crops

Christopher Doering in the Sioux Falls Argus-Leader: After suffering through the worst drought in decades last year, farmers throughout South Dakota should brace for another round of hot and dry conditions in 2013, some weather forecasters warned.

However a new weather outlook will be released Thursday “which will have a little more indication of what the national folks are thinking,” says South Dakota Climatologist Dennis Todey. In the near term, “what we are seeing at this point indicates there will be some recovery in the spring, especially in the early spring, and more so in the eastern and northern parts of the state,” he says.

“As we get on into the summer, the message gets a little hazier. I will be curious to see what the outlook says,” Todey says.

As the spring planting season nears, forecasters have expressed concern that much of the Midwest could remain starved for moisture, though they caution it’s still too early to safely predict the weather several months out. The Midwest could see a late summer increase in rainfall, but the relief will be much too late to help farmers, according to one prediction from a University of Missouri researcher.

“The continuing conditions really look like they’re setting up for a very similar level of drought in the Midwest and West,” Roger Pulwarty, a director with the National Oceanic and Atmospheric Administration who focuses on drought, told lawmakers on the Senate Agriculture Committee....

From NASA, a satellite image of crops growing in Kansas in 2001, under better conditions than exist today

UK's Carbon Trust launches scheme to tackle water waste

Mark Kinver in the BBC: An international standard on water reduction has been launched in an effort to order to encourage businesses to use water more sustainably. The UK's Carbon Trust, which developed the scheme, said many business leaders did not see the issue as a priority.

The Water Standard will require firms to measure water use and demonstrate efforts taken to reduce consumption. It is estimated that more than 60% of Europe's largest cities consume water faster than it can be replenished.

UN data shows that 70% of global freshwater use is for irrigation, 22% is used by industry and 8% is used in homes. Water use is forecast to increase in developing nations by 50% by 2025 and by 18% in developed nations.

"We know that most businesses that are very big users of water don't really have a handle on [water stewardship]," explained Carbon Trust chief executive Tom Delay. "Very few measure it, even fewer have targets to reduce consumption. So even if there is not a significant cost penalty for water use, there is a very significant business risk."...

A World War II poster from the US National Archives

Ocean science in Africa urgently needs investment

Linda Nording in SciDev.net: Last year, African space science had a big change in fortune. The allocation of more than half of the US$2 billion Square Kilometre Array (SKA) radio telescope ― a global science and engineering project ― to the continent opened the floodgates for funding, especially for equipment and an expansion of research training.

But there is another important area that requires similarly massive investment: marine science. A new maritime plan — "2050 Africa's Integrated Maritime Strategy" — could do for African ocean science what the SKA has done for astronomy.

But while the plan looks good on paper, it remains to be seen whether African governments are prepared to provide the sustained funding and long-term political support required to turn the dream into reality.

Certainly, the continent has need for marine science: the waters around Africa are among the least studied in the world. Research is needed to tackle the enormous challenges that industries such as fishing, oil drilling, tourism and shipping pose for marine areas.

Scientists estimate that only half of the marine species off the eastern coast of Africa have been scientifically described. And for known species, questions remain, such as where they live and what they need to survive.

Ocean dynamics around Africa are also poorly understood. Thanks to satellites, scientists have a reasonably good idea of what happens on the surface. But anything below a few centimetres requires measurements to be taken in situ. Large swathes of African waters have not been studied at all, due to a lack of funding and equipment such as ocean-going research vessels...

The Somali coast south of Mogadishu, shot by Simisa, Wikimedia Commons, under the Creative Commons Attribution-Share Alike 3.0 Unported license

Nepali farmers abandon rice as monsoon shifts

Saleem Shaikh and Sughra Tunio in AlertNet: For most of his adult life, Bidur Basnet has planted paddy rice each monsoon season on his five hectares of mountain land. But in the last five years, as monsoon rains have grown increasingly unreliable, he has had to abandon the country’s staple crop. Now he grows easier-to-water vegetables on half his land, leaving the other half fallow.

“How can we prepare our paddy fields when we do not know which month in any year the monsoon rains will drench our fields?” grumbles Basnet, 43, who gave up rice farming after seeing his harvests fall by a third. “Sometimes the monsoon rain is on time and sometimes it is delayed. Such unpredictability is really confounding for us.”

With rains that used to come in April now shifting as late as mid-June, vegetables, which can be watered by hand if needed or planted at the time rains finally fall, are now a better bet, he says.

“Growing cash crops like potato, garlic and onion that require much less water as compared to paddy and have ready buyers in the local market has been a source of secure, constant income for our household,” Bidur told AlertNet Climate.

Battered by growing rainfall variability and unpredictable weather, Nepal’s rice farmers are looking for alternatives, including new crops....

Drying rice in Nepal, shot by Markrosenrosen, Wikimedia Commons, under the Creative Commons Attribution-Share Alike 3.0 Unported license

Floods and landslides hit Indonesia again

Everton Fox in Aljazeera.com: Torrential rain has caused widespread floods which have triggered landslides in northern Indonesia. At least 15 people are known to have died as the flood waters rose to two metres in places.

The worst of the flooding occurred in the north Sulawesi provincial capital of Manado, some 2,200km to the northeast of Jakarta. A staggering 242mm of rain was recorded here in the 24 hours up to 0600GMT on Sunday.

This came after days of heavy rain had already swollen the rivers to the point of bursting their banks. The result was a massive landslide which buried 14 of its victims in mud from hilly parts of the city. One other person was swept away by the flash floods.

Search and rescue teams are still looking for survivors in eight sub-districts of the province which were also hit by floods. Hundreds of police, soldiers and residents struggled to get tractors and bulldozers across washed out roads as they tried to dig through the debris....

Monday, February 18, 2013

Strengthened governance and management required to prevent rush for resources from damaging fragile Arctic environment

UN Environment Programme News Centre: The rush for resources prompted by an apparent acceleration in sea ice melt calls for caution and effective governance  to avoid damage to the fragile Arctic environment, according to the UN Environment Programme's Year Book 2013.

The report, which each year outlines major emerging issues for the global environment, also highlights the need for better information and sound management to minimize the risks from chemicals and raises the issue of the recent spike in the illegal trade in elephant ivory and rhino horn.

A reduction in Arctic summer ice cover has become more intense in recent years, culminating in a record low of 3.4 million square kilometres in 2012 - 18 per cent below the previous recorded minimum in 2007 and 50 per cent below the average in the 1980s and 1990s. Land ice is also retreating and permafrost is melting. The retreating ice brings easier access to natural resources such as gas and oil, thus prompting increased human activity that may threaten the already fragile ecosystems and wildlife, the report says.

"Changing environmental conditions in the Arctic - often considered a bellwether for global climate change - have been an issue of concern for some time, but as of yet this awareness has not translated into urgent action," said UN Under-Secretary-General and UNEP Executive Director Achim Steiner.

"In fact, what we are seeing is that the melting of ice is prompting a rush for exactly the fossil fuel resources that fuelled the melt in the first place," he added. "As the UNEP Year Book 2013 points out, the rush to exploit these vast untapped reserves have consequences that must be carefully thought through by countries everywhere, given the global impacts and issues at stake."

As ice and snow recede, making access and transport easier, the Arctic is expected to play a greatly expanded role in world energy and minerals supplies....

Iceberg shot by Ville Miettinen, Wikimedia Commons via Flickr,  under the Creative Commons Attribution 2.0 Generic license

Tree-ring data show history, pattern to droughts

University of Arkansas Newswire: Dendrochronologists have shown that tree-ring data produce a remarkably accurate history of droughts and other climate changes. Combined with reliable drought indices and historical descriptions of climate conditions, dendrochronology – the technique of dating events and environmental change by relying on characteristic patterns of tree-ring growth – can provide a climate perspective on important events such as large-scale human migration and even the rise and fall of entire civilizations.

A research team, including University of Arkansas Distinguished Professor and dendrochronologist David Stahle and Ewing Research Professor Edward Cook of Columbia University, used more than 1,400 climate-sensitive tree-ring chronologies from multiple tree species across North America to reconstruct the Palmer drought severity index (PDSI), a widely used soil moisture index. Stahle presented his research Friday, Feb. 15, in a symposium on “U.S. Climate and Weather Extremes:  Past, Present, and Future,” during the American Association for the Advancement of Science annual meeting in Boston. He also participated in a panel discussion with other climate experts.

The Palmer drought severity index is based on instrumental temperature and precipitation data dating back to 1895. Stahle and his colleagues inserted the index between fixed points on a grid covering most of North America. Their tree-ring reconstructions cover the same geographic area but extend back to 800 A.D. Stahle wanted to examine the reconstructed indices to test the accuracy of the records and to see if there were any patterns related to drought and other climate changes. The findings were dramatic.

“Comparisons of reconstructed PDSI with instrumentally measured PDSI during the 20th century document the remarkable accuracy with which the tree-ring data reproduce the spatial pattern and intensity of observed drought at annual and decadal time scales, including the Dust Bowl drought of the 1930s,” Stahle said.

The data also confirmed historical descriptions of climate conditions prior to the modern era of instrumentation for weather and climate measurements...

Tree rings shot by Lokilech, Wikimedia Commons, under the Creative Commons Attribution-Share Alike 3.0 Unported license

What silent disasters are saying - Red Cross

From a blog post at AlertNet by Kristalina Georgieva and Bekele Geleta: ... Many people may not know that across the Caribbean, Hurricane Sandy claimed the lives of 135 people and caused equal, and in some cases, more damage than in the USA. People are even less likely to know about the tropical cyclones that also struck Asia, or may have scarcely caught a whisper of the floods in Argentina, Somalia or Indonesia during the same period.

October 2012 reflects a reality that our global village is facing. Over 90 percent of disasters around the world go unnoticed - in silence. They’re too small, inconvenient or overshadowed by other events. Without the attention of the public and the media, they often pass under the donor community's radar.

But these disasters are not silent for the millions of people they affect. For example, around two million people - 12 percent of the population - are facing a food crisis in Malawi right now. And in Lesotho, 725,000 people - representing one-third of the country - are dealing with the same disaster.

The figures are truly alarming. The Centre for Research on the Epidemiology of Disasters reported 221 disasters in 1992 affecting 78 million people and causing economic damage estimated at 70 billion US dollars. Almost 20 years later, in 2011, these figures soared to 336 natural disasters worldwide, 209 million victims and a bill for nearly 366 billion US dollars. How many years does that add up to in terms of lost development for countries and their citizens?

In a nutshell, disasters around the world are growing in frequency, severity and cost each decade with no end in sight. With the effects of climate change, urbanization and environmental degradation, by 2015 an estimated 375 million people - a 79 percent increase from 2011 - will suffer the ravages of devastating weather events....

A flood in Gonaives, Haiti, after Hurricane Jeanne in 2004, USAID photograph

Adaptation and development in Sri Lanka

The Daily News (Sri Lanka): Sri Lanka has embarked on an ambitious new era of economic development, Environment and Renewable Energy Minister Susil Premajayantha said. He was speaking at the launch of the publication Climate Change Issues in Sri Lanka at the Institute of Policy Studies of Sri Lanka (IPS) on February 14. The minister said climate change has become a definite challenge to the society, a reality that all must accept.

“The Environment Ministry is spearheading our national effort to face this great challenge. As the Environment Minister, I find this as a good opportunity to interact with a group of stakeholders, whose professional contributions are very much useful for the successful implementation of national policies, programmes, projects and activities undertaken by the ministry,” he said.

Premajayantha said over the next decade, the island will be making major new investments in all sectors to overcome poverty and consolidate its status as a middle income country. “It has set ambitious national development targets. But climate change impacts, resulting from human-induced global warming, can delay or derail these plans; they can also make existing economic and socio-economic disparities worse,” he said.

“We are already beginning to see some of these impacts taking place -- they will get worse in the coming years and decades. To pursue our development agenda despite these pressures, we need an integrated approach to improve climate resilience in all sectors of economy and society,” the minister said....

Filipino super-typhoon an ominous warning of climate change impact

Simon Tisdall in the Guardian (UK): ...[Super Typhoon] Bopha, known locally as Pablo, broke records as well as hearts. At its height, it produced winds speeds of 160mph, gusting to 195mph. It was the world's deadliest typhoon in 2012, killing 1,067 people with 800 left missing. More than 6.2 million people were affected; the cost of the damage may top $1bn.

As a category 5 storm (the highest), Bopha was significantly more powerful than hurricane Katrina (category 3), which hit the US in 2005, and last year's heavily publicised hurricane Sandy (category 2). With an estimated 216,000 houses destroyed or damaged, tens of thousands of people remain displaced, presenting a challenge for government responders and aid agencies. The lack of international media coverage of Bopha may in part be explained – though not excused – by western-centric news values, and in part by the high incidence of storms in the Pacific region.

The Philippines experiences an average of 20 typhoons a year (including three super-typhoons) plus numerous incidents of flooding, drought, earthquakes and tremors and occasional volcanic eruptions, making it one of the most natural disaster-prone countries in the world.

But more disturbing than Bopha's size was the fact that it appeared to reflect rapidly deteriorating climatic trends.

The five most devastating typhoons recorded in the Philippines have occurred since 1990, affecting 23 million people. Four of the costliest typhoons anywhere occurred in same period, according to an Oxfam report. What is more, Bopha hit an area where typhoons are all but unknown....

Typhoon Bopha on December 2, 2012, via NASA

Sunday, February 17, 2013

Trouble at the beach -- a Carbon Based original

    For years, coastal houses have taken a beating from waves and wind. Hurricane Sandy and winter storm Nemo are just the most recent vandals, but unnamed and less dramatic storms pound and destroy the beach no less efficiently. Water is lapping at the boardwalk.

    To intensify the punishment, federal bureaucrats at FEMA have redrawn the national flood maps, and now many coastal properties lie in flood zone one, a soggy label never attached to them before.  Insurance companies spurn premiums from these addresses, at least in the immediate aftermath of a big flood.  If a beach homeowner actually finds a policy, they balk at the exponential rise in premiums.

    In Asbury Park, New Jersey, residents blame the FEMA maps, which were released after Hurricane Sandy, for driving the middle class away from the shore.   Many people cannot afford the post-Sandy standards for rebuilding.  The new rules often call for raising beach houses two feet at a minimum.

    The New Jersey experience repeats itself up and down the coast.  Towns demand seawalls, armored boardwalks and other infrastructure to keep the beach idyll going another few years.

    For beach dwellers, the overall tone in these discussions oscillates between stubborn optimism and despair. Almost as a reflex, these people say, "Let's rebuild, we're not going to let this disaster get us down.  If we have to rebuild to higher standards, so be it.  Maybe it's even a good idea.  We can recover our money over time."  

    In candid moments, they admit they've heard of sea level rise. Uncertainty clouds all possible futures; they fear that they could raise the house, only to discover in a few years that the waves come even higher.  Mostly, though, they angrily reject the observation that these town-wrecking storms now happen every other year. 

    With mounting horror they realize that the comforting scenarios of selling the beach house at a handsome profit are beginning to sound implausible. Some of their neighbors cannot sell at any price. 

    Homeowners do not suffer alone. Insurers are in a bind, too.  Customers dispute the underwriters' assessment of the odds. Many clients will search online for a less responsible insurer who will underwrite the risk without even a glance  at climate change and potential coastal flooding.  That insurance company might even make money for a couple of years.  When the next damaging storm comes, they will collapse.  This isn't sustainable.

    One usually mute participant in this drama is the inland taxpayer. In the 1980s, an earlier taxpayer outcry largely halted the practice of replenishing beaches for wealthy seaside communities.   That kind of resentment will flare again when they rebel against paying for shoring up houses and improving infrastructure for someone else, which will soon -- once again -- suffer destruction by water. 

    Many of our fellow citizens have committed themselves to coastal living. For the sake of economic growth, beach towns artificially build up values in areas where floods will destroy the property.    Nor are they alone -- everyone who pays taxes that go to recovery funds after a storm has also made the investment. 

    We're now faced with a steep bill for blindly subsidizing these coastal risks for all these years. Finding the right solution will require a stretch from all of us -- homeowners, financial institutions, taxpayers and governments.

    Sooner or later the move away from the shore will gather momentum.  The worst way is all at once, through the "magic of the market," when a big storm scares away the financing to rebuild or improve infrastructure. Families will burn through savings, and then leave their waterlogged wrecks in ruined towns.

    The more orderly path is arduous, and requires that governments vigorously take the lead. For example, the most effective step costs dearly at first, but solves the problem one building at a time.  Governments buy vulnerable beach properties and condemn them. 

    Theoretically, a motivated government can compensate owners somewhat fairly, even if the upfront bill looks frightening.  But the prospects for a justly administered program in the United States look dim.  The wealthy have the clout to make sure that governments, whether state or federal, buy them out at top dollar. Working class homeowners will be stuck with stingier deals, or no offer at all.

    A managed retreat demands enough solidarity to spread the pain around fairly.  A possible role model has already emerged in parts of Australia, where many town councils block coastal development and condemn damaged buildings. Developers push back, although many grudgingly acknowledge that their long-term interest demands working closely with towns to avoid building in areas exposed to sea-level rise and catastrophic flooding. Of course, developers in Australia lack the overwhelming political muscle of their US counterparts.

    Governments must take other active steps, too.  They must upgrade coastal building codes, as New Jersey is doing now. They must devise sustainable ways to protect the buildings that remain after the buyouts.  They can also penalize banks and insurers for encouraging development in risky areas.  They must do their best to prevent short-sighted opportunism from delaying the retreat.

    This kind of active government involves more social engineering than any of the stakeholders usually like.  What's more, governments and others will probably make many mistakes in the orderly retreat from the shore.  But that doesn't change the goal -- to stay dry and safe by shepherding  people out of danger.

    As is usual with anything connected with climate change, the sooner we act wisely, the better. The price tag goes up the longer we dither.

Aerial views during an Army search and rescue mission show damage from Hurricane Sandy to the New Jersey coast, Oct. 30, 2012. US Air Force photo

Saturday, February 16, 2013

Chinese dams on Brahmaputra worry India

Hindustan Times: Arunachal Pradesh chief minister Nabam Tuki said on Saturday he would ask the central government to look into China constructing three hydropower projects on the Brahmaputra river in Tibet. "China building the three dams will affect the interest of people in the downstream areas. We will soon move New Delhi to take up this issue with China in the interest of the people," Tuki said. He added: "It is a cause of concern for us but we are not certain how big these dams are..."

The 2,906-km-long Brahmaputra - called Tsangpo in Tibet - is one of Asia's longest rivers that traverses 1,625 km through Tibet, 918 km in India and 363 km in Bangladesh before flowing into the Bay of Bengal. China's plan to build the dams over the Brahmaputra river and diverting water into its arid provinces has been opposed by state governments in India's northeast.

Assam chief minister Tarun Gogoi had written to Prime Minister Manmohan Singh requesting him to take up the matter regarding the construction of the three dams on the Brahmaputra with Beijing. "We can't do anything if China is building dams. Our concern is that the lives of the people in the downstream should not be affected by the dams," Tuki said.

China announced plans to build three dams - Dagu, Jiacha and Jiexu - on the river last month as part of its aggressive plan to provide energy and water needs for its 1.3 billion people. The Chinese government said that the hydropower dams would not impact flood control efforts or the ecological environment in downstream regions.

Experts said that if the projects were carried out, they would have devastating consequences on the lives of millions of people in India and Bangladesh....

Yarlung Tsangpo River in Tibet. In India it becomes very wide and is called Brahmaputra. A beautiful shot by Luca Galuzzi (Lucag), Wikimedia Commons, under the Creative Commons Attribution-Share Alike 2.5 Generic license.

Quantifying sediment from 2011 flood into Louisiana's wetlands

Space Daily via SPX: The spring 2011 flood on the Mississippi was among the largest floods ever, the river swelling over its banks and wreaking destruction in the surrounding areas. But a University of Pennsylvania-led study also shows that the floods reaped environmental benefits - transporting and laying down new sediment in portions of the Delta - that may help maintain the area's wetlands.

The study, led by Ph.D. student Nicole Khan of the Department of Earth and Environmental Science, is the first to quantify the amount of sediment transported to wetlands by a flood on the Mississippi. The results shed light on how floods impact wetlands, and how these effects might be harnessed to purposefully rebuild Louisiana's wetlands, which are sinking from compaction and growing smaller as sea level rises.

...A study by many of the same scientists, published in Nature Geoscience last year, found that the 2011 Mississippi River floods deposited more sediment in the Atchafalaya River Basin, where the waters moved slowly over a broad area, than in the Mississippi River Basin, where levees and control structures funneled the floodwaters into a jet stream that shot water and sediment out into the Gulf of Mexico.

The current study, published in Geology, focuses specifically on the questions of how much sediment was laid down in the river basins affected by the flood and where the sediments deposited the most.

"The marshes may be able to maintain their surface area or height above sea level if they receive significant sediment, either from floods or hurricanes or normal fluvial processes," Horton said. "Ours is the only empirical study to obtain an estimate of how much sediment is deposited by a large-scale flood on the Mississippi."...

A barge on the Mississippi in Louisiana, shot by Ken Lund, Wikimedia Commons via Flickr, under the Creative Commons Attribution-Share Alike 2.0 Generic license

Pacific locked in 'La Nada' limbo

 NASA: Sea-surface height data from NASA's Jason-2 satellite show that the equatorial Pacific Ocean is still locked in what some call a neutral, or 'La Nada' state. This condition follows two years of strong, cool-water La Niña events.

A new image, based on the average of 10 days of data centered on Jan. 26, 2013, shows near-normal conditions (depicted in green) across the equatorial Pacific. The image is available at: http://sealevel.jpl.nasa.gov/images/latestdata/jason/2013/20130126P.jpg.

This latest image highlights the processes that occur on time scales of more than a year, but usually less than 10 years, such as El Niño and La Niña. These processes are known as the interannual ocean signal. To show that signal, scientists refined data for this image by removing trends over the past 20 years, seasonal variations and time-averaged signals of large-scale ocean circulation.

The height of the water relates, in part, to its temperature, and thus is an indicator of the amount of heat stored in the ocean below. As the ocean warms, its level rises; as it cools, its level falls. Yellow and red areas indicate where the waters are relatively warmer and have expanded above normal sea level, while green (which dominates in this image) indicates near-normal sea level, and blue and purple areas show where the waters are relatively colder and sea level is lower than normal. Above-normal height variations along the equatorial Pacific indicate El Niño conditions, while below-normal height variations indicate La Niña conditions. The temperature of the upper ocean can have a significant influence on weather patterns and climate. For a more detailed explanation of what this type of image means, visit: http://sealevel.jpl.nasa.gov/science/elninopdo/latestdata/.

"This past spring, after two years of La Niña, the expected El Niño was a no-show," says Bill Patzert, climatologist at NASA's Jet Propulsion Laboratory, Pasadena, Calif. "La Niña faded and 'La Nada' conditions locked in. This absence of El Niño and La Niña, termed 'neutral' by some, has left long-range climate forecasters adrift," Patzert added. "Seasonal, long-range forecasting works best when signals like El Niño and La Niña are strong."

Patzert calls the present condition 'La Nada,' because the word 'neutral' misleadingly implies to some that weather will be 'normal.'....

The latest image of sea surface heights in the Pacific Ocean from NASA's Jason-1 satellite shows that the equatorial Pacific Ocean is now in its 10th month of being locked in what some call a neutral, or "La Nada" state. "La Nadas" make long-range climate forecasting more difficult due to their greater unpredictability. Yellows and reds indicate areas where waters are relatively warmer and have expanded above normal sea level, while blues and purple areas show where waters are relatively colder and sea level is lower than normal. Green indicates near-normal sea level conditions. Image credit: NASA-JPL/Caltech/Ocean Surface Topography Team

Modern food supply technology 'key to affordable food'

Joel D. Adriano in SciDev.net: The modernisation of farm-to-market supply chains is important for increasing farmers' income, alleviating poverty, cutting food waste and improving the affordability of food staples, according to the authors of a book. The Quiet Revolution in Staple Food Value Chains: Enter the Dragon, the Elephant, and the Tiger is a joint project by the Asian Development Bank (ADB) and the International Food Policy Research Institute (IFPRI) that was launched last month.

The book examines the movement of rice and potatoes from the farm to the consumer — known as the 'value chain' — in three Asian countries: Bangladesh, China and India. Rice and potato are food staples in Asia.

Thomas Reardon, a professor in the Department of Agricultural, Food and Resource Economics at Michigan State University, United States, and one of the book's authors, says that the study also has lessons for South-East Asian and Pacific island states.

He says that all three countries have found ways to modernise the value chains of these staple crops. He adds that the changes had been introduced at the grassroots and brought about mainly by mobile phones, the use of improved crop varieties and technological changes related to rice milling and potato storage.

Reardon says the rapid rise of modern cold storage facilities for potatoes, which enable them to be supplied out of season, had led to more stable prices and higher incomes for farmers.... 

Marsh plants actively engineer their landscape

EurekAlert via Duke University: Marsh plants, far from being passive wallflowers, are "secret gardeners" that actively engineer their landscape to increase their species' odds of survival, says a team of scientists from Duke University and the University of Padova in Italy.

Scientists have long believed that the distribution of plants within a marsh is a passive adaption in which species grow at different elevations because that's where conditions like soil aeration and salinity best meet their needs. But this team found intertidal marsh plants in Italy's famed Venetian lagoon were able to subtly tune, or adjust, their elevations by producing different amounts of organic soil, and trapping and accumulating different amounts of inorganic sediments as part of a complex interplay with the environment.

"Our study identifies the visible signature of a two-way feedback occurring between the vegetation and the landscape," said Marco Marani, professor of ecohydrology at Duke's Nicholas School of the Environment and Pratt School of Engineering. "Each species builds up the elevation of its substrate to within a favorable range for its survival, much the way corals in the animal kingdom do." The finding may help scientists better predict marsh ecosystems' resilience to climatic changes such as sea level rise. "Obviously, this is not a conscious choice on the part of the plants," Marani said. "It's a natural mechanism -- how marshes work. We just didn't understand it in such detail until now."

...The team used numerical modeling to visualize the dynamic interactions of marsh ecosystems over time, and tested the models against detailed topographical surveys of elevations and distributions of plant species in the Venetian lagoon.

"We've been studying this same marsh for 15 years and, as in similar studies around the world, we were using GPS technology with an accuracy of plus or minus one centimeter in elevation," Marani explained. For the new study, they used a more precise surveying instrument, an electronic theodolite, which measure elevations accurately to within less than one millimeter. "It allowed us to observe differences so subtle that they went unnoticed before," he said....

A digital map of one portion of the Venetian marsh shows the distribution of several species of marsh plants. Courtesy of Marco Marani, Duke University

Friday, February 15, 2013

A war without end - with earth’s carbon cycle held in the balance

Oregon State University: The greatest battle in Earth’s history has been going on for hundreds of millions of years - it isn’t over yet - and until now no one knew it existed, scientists reported today in the journal Nature.

In one corner is SAR11, a bacterium that’s the most abundant organism in the oceans, survives where most other cells would die and plays a major role in the planet’s carbon cycle. It had been theorized that SAR11 was so small and widespread that it must be invulnerable to attack.

In the other corner, and so strange-looking that scientists previously didn’t even recognize what they were, are “Pelagiphages,” viruses now known to infect SAR11 and routinely kill millions of these cells every second. And how this fight turns out is of more than casual interest, because SAR11 has a huge effect on the amount of carbon dioxide that enters the atmosphere, and the overall biology of the oceans.

“There’s a war going on in our oceans, a huge war, and we never even saw it,” said Stephen Giovannoni, a professor of microbiology at Oregon State University. “This is an important piece of the puzzle in how carbon is stored or released in the sea.”

Researchers from OSU, the University of Arizona and other institutions today outlined the discovery of this ongoing conflict, and its implications for the biology and function of ocean processes. The findings disprove the theory that SAR11 cells are immune to viral predation, researchers said.

“In general, every living cell is vulnerable to viral infection,” said Giovannoni, who first discovered SAR11 in 1990. “What has been so puzzling about SAR11 was its sheer abundance; there was simply so much of it that some scientists believed it must not get attacked by viruses.” What the new research shows, Giovannoni said, is that SAR11 is competitive, good at scavenging organic carbon, and effective at changing to avoid infection. Because of that, it thrives and persists in abundance even though it’s constantly being killed by the new viruses that have been discovered....

A SAR-11 bacterium infected with the pelagiphage virus. Photo courtesy of the University of Oregon

European satellite confirms that the Arctic Ocean is on thin ice

Hannah Hickey in the University of Washington News: The September 2012 record low in Arctic sea-ice extent was big news, but a missing piece of the puzzle was lurking below the ocean’s surface. What volume of ice floats on Arctic waters? And how does that compare to previous summers? These are difficult but important questions, because how much ice actually remains suggests how vulnerable the ice pack will be to more warming.

New satellite observations confirm a University of Washington analysis that for the past three years has produced widely quoted estimates of Arctic sea-ice volume. Findings based on observations from a European Space Agency satellite, published online in Geophysical Research Letters, show that the Arctic has lost more than a third of summer sea-ice volume since a decade ago, when a U.S. satellite collected similar data. Combining the UW model and the new satellite observations suggests the summer minimum in Arctic sea ice is one-fifth of what it was in 1980, when the model begins.

“Other people had argued that 75 to 80 percent ice volume loss was too aggressive,” said co-author Axel Schweiger, a polar scientist in the UW Applied Physics Laboratory. “What this new paper shows is that our ice loss estimates may have been too conservative, and that the recent decline is possibly more rapid.”

The system developed at the UW provides a 34-year monthly picture of what’s happening to the total volume of Arctic sea ice. The Pan-Arctic Ice Ocean Modeling and Assimilation System, or PIOMAS, combines weather records, sea-surface temperature and satellite pictures of ice coverage to compute ice volume. It then verifies the results with actual thickness measurements from individual moorings or submarines that cruise below the ice.

“Because the ice is so variable, you don’t get a full picture of it from any of those observations,” Schweiger said. “So this model is the only way to reconstruct a time series that spans multiple decades.”...

Monthly sea ice volume anomalies from 1979 to the present calculated using the University of Washington system. Graph from the University of Washington website

Low-arsenic rice could have major health benefits

Seed Daily via SPX: Millions of people worldwide are regularly exposed to arsenic through drinking water and eating rice grown in soil and water containing high amounts of arsenic. Long-term exposure can lead to the development of different types of cancer as well as serious cardiovascular, neurological, and other health problems.

Scientists have now identified aromatic rice from Bangladesh that has far lower arsenic concentrations than found in non-aromatic rice. The other important benefit is that it contains higher amounts of selenium and zinc. The discovery is reported in Biomedical Spectroscopy and Imaging.

Rice is the staple food of over three billion people. Because the rice plant is highly efficient at absorbing arsenic from soil and water, it is reported to be the highest arsenic-containing cereal. For Bangladeshis, rice is their staple food and they consume on average half a kilogram of rice daily.

A team of scientists led by Dr. Parvez Haris from De Montfort University, Leicester, UK is carrying out research to remove arsenic from water and to identify ways of reducing human exposure to arsenic through diet.

Haris and his team have already demonstrated that exposure to the more toxic inorganic arsenic species is greater in people who eat more rice. In this latest work, published in Biomedical Spectroscopy and Imaging, the De Montfort University team - along with Dr Michael Watts from the British Geological Survey, Keyworth, Nottingham, UK - has identified varieties that are low in arsenic but high in essential trace elements such as selenium and zinc.

Earlier studies showed high concentrations of arsenic in Bangladeshi rice, but the rice samples were mainly from regions where the irrigation water contains higher levels of arsenic....

Child in a deepwater rice field in Bangladesh, shot by the International Rice Research Institute, Wikimedia Commons via Flickr, under the Creative Commons Attribution 2.0 Generic license

Disaster risk is transforming African cities

Denis McClean in the news archive of the UN Office for Disaster Risk Reduction:  Risks that have historically played out in rural areas like drought, floods and wildfires "are being transferred and transformed and expressed differently across Africa's fast growing cities and towns," said Dr. Ailsa Holloway in her keynote address to the 4th Africa Platform for Disaster Risk Reduction today.

Dr. Holloway who oversees Disaster Risk studies at South Africa's Stellenbosch University, said Africa's urban population is expected to be 60% of the total population by 2050 and some countries will reach this by 2030.  "Urban risk management in Africa is simply not up to speed. It is unrealistic to expect our national disaster management authorities to have capacity to address nationwide concerns simultaneously with those faced by large cities and towns," she said.

The urbanization of risk manifests itself in the case of drought in water scarcity when reservoirs run dry due to diminished rainfall and poor water demand management due to the pressures of urban growth, she said.  "Urban fire is devastating and a poorly understood and weakly managed risk across the continent, while new forms of rising flood occur in our growing cities due to unplanned settlement and weak urban infrastructure. Food insecurity in cities generates multiple challenges."

Dr. Holloway spoke about the "large youth dividend" in Africa which was largely untapped due to dismally low enrollment in high schools, for example in southern Africa where it is 30% or lower in some countries and the majority of youth are unemployed.

"An inescapable reality of an increasingly urban continent --especially one with so much poverty and structural inequality -- is the likelihood of social violence and conflict. While one might argue that this is not the core focus of disaster risk reduction, shortcomings in service delivery, rising food prices, unemployment and political intolerance can trigger social unrest.  Community based disaster risk reduction in tense urban contexts can play an important role in addressing other forms of tension that have potential to bring harm and loss."...

A crowd on the street in Lagos, Nigeria, shot by Zouzou Wizman, Wikimedia Commons via Flickr, under the Creative Commons Attribution 2.0 Generic license

Warming seas frustrate Zanzibar's seaweed farmers

Danstan Kaunda in AlertNet: Rising sea temperatures and more extreme weather  are damaging Zanzibar’s formerly thriving seaweed farms, maritime experts say, reducing harvests and putting farmers out of work.

Commercially valuable seaweed was brought to Zanzibar from the Philippines in the 1980s, and early producers found it grew well in the shallow waters off this Indian Ocean island. Some types of seaweed, used in the food and pharmaceutical industries as a stabilizer or emulsifying agent, are in great demand abroad, and the government promoted it as a useful export crop and source of employment.

...Demand was strongest for high quality red seaweeds such as the Cottonii and Spinosum varieties, but seaweed farmers say those varieties are now proving very vulnerable to changes in growing conditions, which can make the weed lose its colour and, most important, its texture.

As an apparent result of warming conditions and storms, Zanzibar’s seaweed production has fallen sharply in recent years, from 14,040 tonnes five years ago to just under 10,800 tonnes last year, according to the Department of Marine Resources of Zanzibar.

The Zanzibar Exporters Association said its members collected and exported about 11,000 tonnes of dry seaweed in 2011, most of it going to the United States, France, Denmark, Spain, China and Chile....

Aquaculture of red algae in Zanzibar, shot by Leyo, Wikimedia Commons,  under the Creative Commons Attribution-Share Alike 2.5 Switzerland license

Thursday, February 14, 2013

Paying farmers to protect forest watersheds in Vietnam & China: The long-term prognosis

Maya Thatcher in Forest News, a blog by the Center for International Forestry Research: As China and Vietnam move toward decentralised, market-based economies, they will need to improve the cost-effectiveness of ambitious programmes offering cash rewards to farmers who help protect forests, watersheds and other vulnerable ecosystems, a new study by the Center for International Forestry Research suggests.

Local communities, whose participation at the moment is generally mandatory, will also need to have a greater say in how they manage the land. “The key is to find a way to make these Payments for Ecosystem Services (PES) schemes sustainable in the long run,” said Vijay Kolinjivadi, lead author of the report looking at the governments’ driving role in the projects and what impact that has. “As currently designed, these schemes may eventually require external funding, from international donors or non-governmental organisations,” he said. “Local stakeholders need to understand the long-term benefits of ecological stewardship.”

Policymakers across the globe worry about how the food, water and shelter needs of seven billion people may be irreparably damaging our planet. The clearing of tropical forests, intensified farming production and industrial-scaled ranching have resulted in soil erosion, deterioration of water resources and a general loss of biodiversity. China and Vietnam, which have both experienced unprecedented economic growth in recent decades, are offering incentives to those who adopt land use practices that benefit society as a whole.

But these programmes, aimed at protecting forests and promoting watershed conservation, have cost tens of billions of dollars. And because they are carried out on state-controlled land, farmers have little choice but to take part and have little or no sense of ownership.

Kolinjivadi hopes district chiefs, farmer councils, and other local institutions will eventually play a larger, more significant role. “We have a unique opportunity here,” said Kolinjivadi, who sees the role of the government eventually shifting from primary driver to facilitator, promoting direct, fair negotiations between contracting parties....

A forest wetlands in Tịnh Biên and An Gaing, Vietnam, shot by Thuydaonguyen, Wikimedia Commons, under the Creative Commons Attribution-Share Alike 3.0 Unported license