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Jill Hagey, Behind the Numbers
Sahel Drought: Putting Malnutrition in the News
›The original version of this article, by Jill Hagey, appeared on the Population Reference Bureau’s Behind the Numbers blog.
Over the past few months, the Sahel drought has sparked attention of news media and concerned citizens around the world. Throughout this media blitz, I have been struck by the sharp contrast between this coverage and how the devastating effects of malnutrition are usually portrayed. Malnutrition is often overlooked in favor of more “newsworthy” diseases, and it takes a crisis to focus our attention on this public health issue. Yet an emergency such as this drought – affecting more than 18 million people, including nearly 2 million children – is difficult to ignore.
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PBS ‘NewsHour’ Reports on Reasons for Optimism Amid Niger’s Cyclical Food Crises
›Set in the middle of the arid region between the Sahara desert and the equatorial savannas of Africa known as the Sahel, Niger is no stranger to drought. In recent years, however, droughts have hit more often, started earlier in the season, and lasted longer, creating a cycle of food insecurity that is becoming more difficult to break.
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Center for American Progress Takes on Climate Change, Migration, and Why They Matter to U.S. National Security
›July 19, 2012 // By Kayly OberIn early 2012, the Center for American Progress (CAP) released Climate Change, Migration, and Conflict: Addressing Complex Crisis Scenarios in the 21st Century. Although generally in line with climate-migration pieces before it (“It is difficult to fully understand the detailed causes of migration and economic and political instability, but the growing evidence of links between climate change, migration, and conflict raise plenty of reasons for concern”), the report strays from the usual by focusing on U.S. national security interests and four particular sub-regions of concern.
Northwest Africa
The first region examined – and the one perhaps most on the radar of security analysts at the moment – is Northwest Africa. Here the already-tenuous political stability left in the wake of the Arab Spring will most certainly be exacerbated by climate change, authors Michael Werz and Laura Conley write. “Northwest Africa is crisscrossed with climate, migration, and security challenges…rising coastal sea level, desertification, drought, and the numerous other potential effects of climate change have the potential to increase the numbers of migrants.” All of these factors combine to create what Werz and Conley define as an “arc of tension,” that will strengthen organizations that thrive on chaos, like Al Qaeda in the Islamic Maghreb, which has already taken advantage of the regional power vacuum left by Muammar Gaddafi’s ouster.
CAP investigates this arc of tension more fully in a more focused, separate brief on Northwest Africa, drilling down on Nigeria, Niger, Algeria, and Morocco. They find that these countries already grapple with a complex set of issues, including population pressures, drought, land degradation, large-scale migration, and natural resource conflicts. Climate change exacerbates all of these. Particularly worrying is the threat it poses to traditional pastoral and agricultural livelihoods, which could translate into “increasing numbers of disenfranchised youth, who security experts believe are more easily recruited to assist [terrorist groups] in return for money and food.”
But environmental pressures and related conflict are not new in these areas, so how do we parse out the slow-onset climate change factors from the usual variety? That question is left unanswered and remains an open – and hotly debated – problem for researchers. The multi-faceted nature of migration, in particular, makes it hard to define the exact causes of movement.
On a larger scale, flagging the environment as the principal reason for migration has its problems, especially under the umbrella of “refugee” status. According to respected migration experts, using the term “refugee” in the case of environmental or climate scenarios is incorrect, since the environment is often simply one “push” factor, while economic opportunities make for a heavier “pull.” Furthermore, applying the term refugee in this case, they say, is misleading and undermines true political refugees.
CAP uses the less polarizing term “climate migrants” in their paper, saying “no universally accepted concepts, much less legal categories, exist to describe or define climate migrants. There is agreement, however, that factors such as drought, flooding, severe weather, and environmental degradation can cause human mobility in large numbers that are certain to increase in the near future.”
South Asia
In a case like Bangladesh and India, the second sub-region to be examined, the international community is preoccupied with rising sea levels, which is considered a more concrete example of climate change affecting migration. Ultimately, as CAP notes, it’s also a security issue:In December 2008 the National Defense University in Washington, D.C., ran an exercise that explored the impact of a flood that sent hundreds of thousands of refugees into neighboring India. The result: the exercise predicted a new wave of migration would touch off religious conflicts, encourage the spread of contagious diseases, and cause vast damage to infrastructure.
While true that India is “not in a position to absorb climate-induced pressures,” as Werz and Conley write, it’s not quite true that “foreign climate migrants” would be necessarily be an immediate problem, as they suggest.
India has a history of taking in Bangladeshi migration, with an estimated 10 to 20 million illegal Bangladeshis currently living in India, according to the Institute for Defence Studies and Analyses, an Indian think tank. Traditionally, Bangladeshis have migrated for a myriad of socioeconomic reasons, but most alluring are land availability and a stronger Indian economy. In any case, Bangladesh-India migration would not be new phenomenon.
The environment has also been a part of the equation, but in the case of large-scale sea level rise, its effect on migration can be a bit more nuanced. As the International Food Policy Research Institute noted in its study “Environmental Migrants: A Myth?,” Bangladeshis often have “risk-sharing and informal lending arrangements” to deal with idiosyncratic shocks, which include flooding. Instead, crop failure actually has the strongest effect on mobility. This suggests that it’s not just sea level rise that observers worried about environmentally-driven migration need to track in Bangladesh, but also drought and rain-induced flooding.
The Andes
The third region, the Andes of South America, also suffers from a slightly myopic security lens. Here, it’s all about melting glaciers and snowcaps. Retreating glaciers would spell disaster for countries which rely heavily on seasonal melt for agriculture and hydroelectric power. Most vulnerable are those with weak governance systems and infrastructure like Peru, Bolivia, Ecuador, and Colombia. For reference, hydropower supplies a whopping 80 percent of Peru’s electricity. However, there are more subtle impacts that could portend bigger trouble for the region.
Regional security experts concede that higher temperatures are already affecting crop production in rural Colombia, harming the ability to consolidate the security gains made by Plan Colombia over the last decade, for example. And a recent report from EUROCLIMA, the European Union’s program on climate change in Latin America, paints an even bleaker picture for agricultural production in the face of desertification and drought:Natural ecosystems, agriculture, water resources, and human health in Latin America have been impacted by unusual extreme weather events reported in the past years. For example, droughts related to El Niño impacts on the flows of the Colombia Andean region basins (particularly in the Cauca river basin), are causing a 30 percent reduction in the mean flow, with a maximum of 80 percent loss in some tributaries. Consequently, soil moisture, and vegetation activity are strongly reduced.
Perhaps more worrying is the impact on the biodiversity in the region. Considering that Latin America represents 16 percent of the world’s surface but 40 percent of its biodiversity this could have serious implications for the biomedical field and others. In a recent Nature study, scientists discovered that in situations where glacial coverage is reduced to the point where it only covers 30 to 50 percent of the drainage basin, several species begin to disappear. They calculated that the entire melting of the glaciers in these areas would result in a huge loss of biodiversity, where between 11 and 38 percent of animal and plant species could go extinct, including many of endemic species that can be found only in these areas.
China and the Third Pole
Finally, China is now in its fourth decade of ever-growing internal migration, some of it driven in recent years by environmental change. Today, across its vast territory, China continues to experience the full spectrum of climate change-related consequences that have the potential to drive migration. CAP finds that the consequences of climate change and continued internal migration in China include “water stress; increased droughts, flooding, or other severe events; increased coastal erosion and saltwater inundation; glacial melt in the Himalayas that could affect hundreds of millions; and shifting agricultural zones” – all of which will affect food supplies and the country’s seemingly relentless pace of development. Still, the most unique factor of migration in China is the power of the central government to be the main “push factor,” as in the case of the Three Gorges Dam.
Agreeing to Agree
Though they might sacrifice some nuance in the regional breakdowns, the core of CAP’s argument for why climate migration matters to U.S. national security is solid. The United States has a “vested interest in helping ensure that areas with weak or absent governance structures – where poverty, environmental degradation, and grievances over central governments and energy production coincide – do not become future recruiting grounds for extremists,” write Werz and Conley. “The possible impacts of climate-related migration in such fragile situations could be destabilizing.” Invest in people rather than just military might; invest in poverty reduction, economic development, and alternative livelihoods.Jon Barnett on migration as adaptation
In the context of climate change, this means accepting that migration is a form of adaptation. As Jon Barnett notes in an interview with ECSP:In some circumstances it might be appropriate to [invest in traditional adaptation projects like] infrastructure and hard options where we’re very certain about the nature of the risk…but in other cases, expanding the range of choices and freedoms and opportunities that people have to deal with climate change in the future is perhaps the better strategy.
This requires higher-level thinking by states to concede that migration will happen and it isn’t necessarily a bad thing. Migration bolsters origin communities through remittances and education and technology sharing. But this thinking has yet to permeate policymaking, with obvious political reasons. Until then, states that are committed to preventing migration are actually cutting off important community responses.
Ultimately, what we consider adaptation and development needs to evolve. By investing in an integrated, multi-sector development approach, we can prevent violent responses to migration at the source rather than relying on reactionary and military solutions. Or, as CAP’s Michael Werz and Laura Conley put it more boldly, “our security can no longer be guaranteed by military strength or economic clout alone, but only by our ability to compel collective action.”
Photo credit: “Villagers going to the local market in Bogoro walk past a Bangladeshi patrol unit of the United Nations Mission in the Democratic Republic of the Congo (MONUC) as the country prepares for the second round of elections. 12/Oct/2006. UN Photo/Martine Perret,” courtesy of United Nations Photo Flickr.
Sources: Center for American Progress, Institute for Defence Studies and Analyses, Inter-American Development Bank, International Food Policy Research Institute, Nature, The World Bank.
Video Credit: “The Nexus of Climate Change, Migration and Security,” courtesy of the Center for American Progress. Image: “The Arc of Tension,” courtesy of the Center for American Progress. -
Nancy Lindborg, The Huffington Post
Chronic Crisis in the Sahel Calls for a New Approach
›July 10, 2012 // By Wilson Center StaffThe original version of this article, by Nancy Lindborg, appeared on The Huffington Post.
It is the lean season in the Sahel, a spine of arid and dry lands that runs from Senegal to Chad in western Africa, and once again we are seeing the devastating images of children gaunt with hunger. This is a region that faces high childhood malnutrition and underdevelopment even under the best of circumstances so one poor harvest can push millions of the most vulnerable into severe risk. In the aftermath of poor rains, and with food prices stubbornly stuck on high since the food crisis of 2008, some 18.7 million people across eight affected countries in the Sahel are at risk of food insecurity this year alone. At least eight million people are already in need of emergency assistance.
At USAID, we are determined to get ahead of these kinds of chronic crises. We know that millions of Africans living in the dry lands of the Horn and Sahel regions need new solutions. Last year, the worst drought in 60 years ravaged the Horn of Africa, driving 13.3 million people into crisis. And this summer, families in the Sahel are feeling the peril of depleting food supplies, high food prices, and rising malnutrition.
We can’t prevent what appears to be increasing cycles of drought, but we can and are working to create better solutions and build greater resilience among the most vulnerable.
Every crisis is complex, and the Sahel is no exception. A regional drought has been overlaid with instability stemming from the coup in Mali and conflict in the northern part of that country where armed militant groups have forced the suspension of critical relief operations. More than 184,000 refugees have fled to communities in neighboring countries that are already deeply stressed from drought. Though still functioning, local and regional markets have been disrupted, driving food prices even higher. And as of mid-June, swarms of locusts from southern Algeria and Libya had arrived in northern Mali and Niger; now expected to move southward, these infestations could result in crop destruction exacerbating an already worsening situation.
Continue reading on The Huffington Post.
Image Credit: West African medium-term food security outlook, courtesy of the Famine Early Warning Systems Network.
Nancy Lindborg is the assistant administrator of the Bureau for Democracy, Conflict, and Humanitarian Assistance at the U.S. Agency for International Development. -
UNEP Maps Conflict, Migration, Environmental Vulnerability in the Sahel
›A new set of maps from the United Nations Environment Programme (UNEP) identifies “climate hotspots” – areas vulnerable to instability exacerbated by climate change – in 17 sub-Saharan countries in and bordering the Sahel region. The maps reflect the fact that, more often than not, the impact of climate change on local populations is compounded by changes in migration, conflict, or both. According to Livelihood Security: Climate Change, Migration and Conflict in the Sahel, the UNEP report accompanying the maps, understanding “the exacerbating effect of changes in climate on population dynamics and conflict in the region” will be essential to developing successful adaptation strategies throughout the region.
UNEP’s maps analyze 40 years of data to pinpoint where the region’s most at-risk populations are located based on environmental, population, and conflict trends dating back to 1970. In a single map pinpointing the Sahel’s 19 hotspots, UNEP synthesizes subnational data from four environmental indicators over time – rainfall (from 1970 to 2006), temperature changes (1970 to 2006), drought (1982 to 2009), and flooding (1985 to 2009) – which are then layered on top of population trends (1970 to 2010) and conflict data (1970 to 2005) in order to identify the region’s most insecure areas.
Composite Vulnerability
At first glance, the map can appear hard to decipher; it is flooded with different colors and symbols, each indicating something different about the extent of climate change, migration, and conflict in the region. A Google Earth version of the map (available for download here) makes all this information easier to process by allowing users to select which indicators they want to see mapped out, cutting back on the number of lines, dots, colors, and pie charts the user has to decode.
Given the vast amount of the information being condensed into these maps, the report is a helpful and worthwhile read. For instance, eight hotspots are in places with growing populations and another seven are located in places that have experienced conflict; altogether, 4 of the 19 hotspots have both past conflict and growing populations. The report digs deeper into the confluence of climate, conflict, and migration by discussing case studies that highlight how the three intersect in local communities (at the same time, the report is careful to avoid suggesting that there is a causal relationship between the three issues.). In Niger, Nigeria, and Chad, for example, tensions have been mounting between northern pastoralists and southern farmers as each group has moved further and further afield in search of water and arable land to sustain their livelihoods.
Holes In the Data
While the hotspot maps include a wealth of information, the report makes clear that it is by no means exhaustive. Rising sea levels are, for instance, a major impending threat to coastal populations in the Sahel, but only the downloadable Google Earth map – not the hotspot map in the report or the Google Earth map as presented online – incorporates this factor. Compounded with a skyrocketing population in the coastal areas – the coast between Accra and the Niger delta is expected to be “an urban megalopolis of 50 million people” by 2020, according to the report – an increase in sea levels could have a huge impact on the region’s stability.
The report also readily admits that the datasets for population trends and conflict have shortcomings. Population data is largely based on censuses, which both the report and its data sources (UNEP’s African Population Database and the Gridded Population of the World, version 3) acknowledge can be inconsistent in their accuracy. Additionally, after 2000, population data is based on projections rather than estimates, which, as last year’s update from the UN Population Division showed, have often proven inaccurate, particularly in sub-Saharan Africa.
Regarding conflict, the UNEP report is straightforward in admitting its limits. The report lacks data on small-scale conflict (fewer than 25 battle deaths, following the Uppsala Conflict Data Program’s threshold that separates conflicts from lower-level violence), even as it acknowledges that such conflict is “often the first to occur” when climate change threatens communities’ access to resources and livelihoods.
Ultimately, however, these maps give valuable data on specific locations that are uniquely vulnerable to trends in population, climate, migration, and conflict. They add focus to the conventional wisdom that climate change will impact the region’s stability, and, taken together, the maps and the report provide a valuable resource for scholars and policymakers attempting to craft adaptation policies that take into consideration these complex links.
Sources: Socioeconomic Data and Applications Center at Columbia University’s Earth Institute, UNEP, Uppsala Conflict Data Program.
Image Credit: UNEP. -
How Did We Arrive at 7 Billion – and Where Do We Go From Here? [Part One]
›October 26, 2011 // By Elizabeth Leahy MadsenThe United Nations Population Division has estimated world population will reach seven billion on Monday. Which changes in demographic trends led us to this milestone? What do the past and present tell us about how human numbers will change in the future?
The “Day of Seven Billion” was announced this spring following the release of the latest revision of UN population projections. Although the seven billionth person will not be precisely identified, this estimate is based on careful demographic modeling. Every two years, the UN revises its projections to incorporate the latest trend data and modify its assumptions, as seemingly small changes can make a huge difference demographically.The UN estimates that the seven billionth person alive today will be born on October 31. Demographer Elizabeth Leahy Madsen explains how we got to that number, its significance, and where our demographic path might take us from here. Read part two here.
The United Nations Population Division has estimated world population will reach seven billion on Monday. Which changes in demographic trends led us to this milestone? What do the past and present tell us about how human numbers will change in the future?
The “Day of Seven Billion” was announced this spring following the release of the latest revision of UN population projections. Although the seven billionth person will not be precisely identified, this estimate is based on careful demographic modeling. Every two years, the UN revises its projections to incorporate the latest trend data and modify its assumptions, as seemingly small changes can make a huge difference demographically.
Demography Is Driven by Fertility and Population Momentum
Since world population reached three billion in 1959, the rate of growth has increased, peaked, and begun to slow. Each succeeding milestone was reached more quickly than the last: It took 15 years to reach four billion, 13 years to hit five billion, and only 11 years to get to six billion at the end of 1998. The interval leading to seven billion was slightly longer, at 13 years, as the global rate of population growth has slowed.
Although mortality and migration also affect population trends, the factor with the greatest influence by far is fertility – the average number of children born to each woman. The decline in the global fertility rate from an average of nearly 5 children per woman in the early 1960s to 2.5 children today has in turn slowed the pace of world population growth. However, demographic momentum from previous generations of high fertility can drive population growth for decades to come. Even if Nigeria reached replacement-level fertility today, its population would still grow by one-third by 2050 as the number of births continued to exceed the number of deaths.
Assumptions Matter
Population projections consider: 1) current data about fertility and 2) assumptions about the ways fertility will change in the future. These assumptions vary depending on the source, so how much of a difference do they make? As it turns out, quite a lot.
Projections of world population in 2050 range from 8.1 billion (if fertility rates fall to a global average of 1.7 children per woman) to 10.9 billion (if they remain unchanged). The gap of nearly three billion between those possibilities is greater than the combined populations of China and India today.
Estimates vary even more widely for the end of the century, with the UN projecting that by 2100 world population could total anywhere between 6 billion (if total fertility falls to an average of 1.55 children per woman) and 27 billion (if every country’s fertility rates remain constant at today’s levels).
While demographers parse the details of the projections, policymakers would like to know which of these scenarios is more likely. After all, the economic, environmental, and political consequences of a population of 8 or 11 billion two generations hence are not the same, and a world of 27 billion is difficult for anyone to fathom.
If we simply projected past trends into the future at a steady rate, the population estimates on the low end of the fertility spectrum seem more likely. The global fertility rate has fallen from 4.5 children per woman in the early 1970s to 2.5 today, a decline of 43 percent, so the 14 percent decline projected in the medium-fertility variant between now and 2050 seems reasonable at first glance, perhaps even conservative. The medium-fertility variant assumes that all countries’ fertility rates will begin moving towards replacement level, around 2.1 children per woman, regardless of whether they are currently above or below that number.
However, even a 14 percent decline in fertility assumes that areas where fertility rates remain stalled at high levels will soon begin rapid declines, paralleling the past experience of other regions. As Population Reference Bureau demographer Carl Haub writes, “the assumption that the developing world will necessarily follow the path of the industrialized world…is far from a sure bet.”
In the last 40 years, fertility rates in the Caribbean, northern and southern Africa, Latin America, and all of Asia declined by 50 percent or more. The pace of decline in sub-Saharan Africa, while still notable, was much slower, at 23 percent. In order to meet the UN medium-variant projections, the region’s fertility rate would need to fall by nearly 40 percent by mid-century.
Some of the largest, fastest-growing populations in the developing world would need to experience a major acceleration from recent trends. In Nigeria, fertility edged down by 15 percent between 1970 and 2010, but the medium variant projection depends on a decline of 37 percent over the next four decades; Ethiopia’s fertility rate will need to fall by half.
Gender Matters, Too
The great irony of fertility trends is that gender inequities play an important role at both ends of the scale. In countries with the highest fertility rates, women tend to have less education than men and less autonomy. Their fertility choices may be greatly affected by the preferences of their husbands or other family members. In Niger, which has the highest fertility rate in the world, married men would, on average, like three more children than married women. In Uganda, where women average more than six children each, 60 percent of men report that domestic violence is justified.
By contrast, in countries with the lowest fertility rates, women have achieved equal access to education and the labor market, with more autonomy about how to earn income and what to do with it. Yet cultural expectations that place the burden for child and elder care and housework almost entirely on women can make marriage an unappealing option. In Japan, which is among the 10 lowest fertility countries in the world, more women are choosing to stay single: The marriage rate has fallen by almost half since the 1970s. Japanese women who do marry are waiting until their late 20s and tend not to give birth until they are 30, both of which result in lower average family size.
Even at this end of the demographic spectrum, the assumptions embedded within population projections seem optimistic. Japan’s fertility rate was last above replacement level in the early 1970s; it has fallen steadily to 1.3 children per woman today. The UN projections assume that fertility will immediately reverse track and begin rising to over 1.8 children per woman in 2050, rebounding above two children per woman before the end of the century.
The stalled high fertility rates in much of sub-Saharan Africa and parts of the Middle East, together with unprecedented low fertility in Eastern Europe and parts of East Asia, indicate that we are currently in an era of remarkable demographic diversity, despite the UN’s projection of future convergence.
Continue reading part two here.
Elizabeth Leahy Madsen is a consultant on political demography for the Wilson Center’s Environmental Change and Security Program and former senior research associate at Population Action International.
Sources: Boling (2008), Haub (2011), Japan Statistics Bureau, Measure DHS, UN Population Division, UN Population Fund, Washington Post.
Image Credit: Chart data from UN Population Division, arranged by Elizabeth Leahy Madsen. -
Water and Poverty in a World of 9 Billion, Vulnerable Agriculture in the Niger Basin
›In a two–part Water International special report on water, food, and poverty, examining 10 of the world’s major river basins, a team of researchers say that instead of worrying about having enough water to sustain the world’s growing demand, policymakers should be concerned with understanding how to manage what they already have.
Introducing the special report, Simon Cook, Myles Fisher, Tassilo Tiemann, and Alain Vidal note in “Water, Food and Poverty: Global- and Basin-Scale Analysis” that the vast majority of population growth over the next few decades is expected to happen in developing countries, “where the disjunct between poverty, water and food is particularly acute.” Gaining a better understanding of water – how much we have, who uses it, and how best to use it – is essential to improving development results in the face of this demographic explosion. Water is linked with poverty and development through issues like scarcity, access, and water-related hazards (like drought, flood, and disease). But the authors conclude that water productivity – the ease or difficulty in getting water from its source to agriculture – “is by far the most important water-related constraint to improved food, income and environmental security.”
In “Water, Agriculture and Poverty in the Niger River Basin,” Andrew Ogilvie et al., paint a bleak picture of life in one of West Africa’s most important basins, writing that “[m]uch of the population in the basin suffers from extreme, chronic poverty and remains vulnerable to droughts and malnutrition.” Many of the Niger basin’s 94 million residents rely on subsistence agriculture, and most of that agriculture relies on rainwater rather than groundwater irrigation systems. Over time, the authors write, “there is little doubt that climate change will increase the strain on already-vulnerable agriculture.” Population growth will exacerbate this strain; the basin’s population is expected to increase as much as fourfold by 2050. In spite of this bleak picture, the authors conclude that “[i]mprovements in rainfed agriculture can have an important impact on poverty reduction and food security due to the large population dependent on it.” -
One in Three People Will Live in Sub-Saharan Africa in 2100, Says UN
›June 8, 2011 // By Schuyler NullBetween now and 2100, three out of every four people added to world population will live in sub-Saharan Africa. That’s what the medium variant of the UN’s world population projections estimates.* As we noted in our previous post on the latest UN numbers, Nigeria leads sub-Saharan growth, but other countries will also grow by major multiples: Tanzania and Somalia will be 7 times larger; Malawi more than 8 times; and Niger, to grow to more than 10 times its current population.
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