“Kenya is destroying itself,” Julius Kipng’etich, director of the Kenya Wildlife Service, told The Observer. “The population has reached an unsustainable level. We are killing ourselves by slowly destroying the forests and settling there.” Drought, poverty, and population growth have led large numbers of the rural poor to encroach on protected forests in search of arable land, reports The Observer, jeopardizing Kenya’s food and water security and hydroelectric energy production. The government’s inability to manage land tenure has further exacerbated the situation.

In response to these developments, a local conservation group called Rhino Ark has erected a 250-mile electric fence (see photo slideshow) around the Aberdare mountain range north of Nairobi. When members began the project in 1989, they were attempting to protect the area’s rhinoceroses. However, their efforts eventually grew into a broader campaign to safeguard the Aberdares’ critical water and forest resources.

Proponents of the Aberdare fence—including Nobel Peace Prize-winning environmentalist Wangari Maathai—contend that it serves multiple purposes. First, it discourages settlers from grazing livestock in the forest or felling trees to make way for crop cultivation. Other regions of the country—notably the Mau Forest Complex, the water source for millions of people in Kenya, northern Uganda, and southern Sudan—have suffered severe deforestation and degradation, with serious consequences for human and ecological health. Forests provide a wide spectrum of essential ecosystem services, such as regulating the water cycle, filtering groundwater, and sequestering atmospheric carbon.

The fence also mitigates human-wildlife conflict, argue its supporters. According to a recent 60 Minutes report, some Maasai herdsmen have resorted to poisoning lions and other predators to protect their livestock. Farmers have targeted elephants and other animals that trample crops to safeguard their livelihoods. As a result, wildlife populations—the lifeblood of the Kenyan tourism industry—have been devastated. A study published in the Journal of Zoology found precipitous declines in wildlife at Maasai Mara, one of Kenya’s most renowned national parks. Robin Reid, a co-author of the paper, explains, “There appears to be a ‘tipping point’ of human populations above which former co-existence between Maasai and wildlife begins to break down.”

Following Aberdare’s example, the Kenyan government is considering building thousands of miles of fencing around similarly vulnerable forests and parks. Yet fences may soon prove inadequate. The country’s population has grown from 10 million to 36 million over the past 45 years, and it could exceed 65 million by 2050, given that the decline in its fertility rate has stalled. In addition, its GDP per capita has steadily decreased, leaving more than 55 percent of citizens below the official poverty line.

With more people clamoring for more resources, a sustainable future will depend on robust community conservation programs and land-rights reform. Successful models of community conservation in East Africa include the Lion Guardians and Il Ngwesi Group Ranch, as well as other efforts discussed at the Wilson Center last year. A 2008 report from the Rights and Resources Initiative argues that authorities should shift away from traditional forms of conservation, which focus on excluding people from protected areas, in favor of approaches that empower local communities to care for and benefit from the land through customary tenure or individual property rights.

Finally, Nairobi should craft national forest management practices with an eye toward ongoing international climate negotiations. Policymakers are poised to include provisions for compensating developing countries for reducing greenhouse-gas emissions from deforestation and forest degradation in the next international climate treaty, to be concluded in Copenhagen this December. Kenya could benefit substantially if the government takes appropriate action.

Photo: A giraffe in Maasai Mara, where their population has declined 95 percent over the last 15 years. Courtesy Flickr user angela7dreams.

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Assumptions about human behavior drive our knowledge of future global population trends. Demographers analyze population and other survey data in order to forecast trends, but uncertainty colors these projections.

In the 2008 Revision of World Population Prospects, the UN Population Division projects that our planet will grow to 9.15 billion people by 2050. Yet this medium-variant projection is just one of several possible scenarios released in this latest round of number crunching. The low- and high-variant projections—7.96 billion and 10.5 billion, respectively—could instead become reality, given slight shifts in fertility rates in developing countries, where growth rates remain higher than in more developed nations. Although both developing and developed nations are susceptible to shifts in fertility rates, uncertainties are greater in the developing world due to factors such as inconsistent data collection, weak health system infrastructure, and low government capacity.

Elizabeth Leahy and I investigate the underlying assumptions behind population projections in an article in the May/June edition of World Watch magazine. By comparing three of the leading population-forecasting institutions, we find that small variations in assumptions can lead to significant differences in projections.

Uganda’s demographic outlook is a prime example. Between 1960 and 2005, Uganda’s population grew by 22 million people, while the country’s fertility rate fell by less than 3 percent. The UN medium-variant population projection assumes the country will buck precedent and experience a 61 percent fertility rate decline between 2005 and 2050, resulting in a population of 91 million people. The U.S. Census Bureau, on the other hand, assumes a less drastic fertility decline and projects a population of 128 million people by 2050. The International Institute for Applied Systems Analysis (IIASA), an Austrian institution that projects population on a regional basis, recently revised its population projections to reflect greater growth in sub-Saharan Africa due to stalling fertility decline and stagnant educational-attainment rates.

Fertility rates rarely decline when governments have not made the proper investments in health and education. The UN medium-variant projection is commonly cited as an inevitable scenario; few people know that one of its underlying assumptions is that access to modern contraception will continue to expand. Without real-world development investments to match these assumptions, a very different scenario could easily materialize. By empowering women, bolstering access to education, and providing comprehensive family-planning services to citizens, governments and policymakers can translate these assumptions into reality.

A micro-economist friend of mine likes to say that macro-economists have correctly predicted nine of the last five recessions. In “The World’s New Numbers,” in the Spring 2009 Wilson Quarterly, Wilson Center Senior Scholar Martin Walker argues that demographers should be so lucky.

“Indonesia’s forest loss continues more or less unabated, despite global concern for the resource and forest-dependent people, as well as a wealth of knowledge about the problems and solutions: poor governance, corruption, perverse incentives in the industrial sector,” said AAAS Science and Technology Policy Fellow Steve Rhee. Rhee was joined by Henrik Urdal of the International Peace Research Institute, Oslo (PRIO), who also studied the effects of environmental degradation on conflict in Indonesia, for “Demography, Environment, and Conflict in Indonesia and India,” an April 21, 2009 event sponsored by the Environmental Change and Security Program.

Parsing the Patterns: Population, Resources, and Conflict

Urdal argued that case studies have sometimes overstated the links among population, resource scarcity, and conflict. Researchers tend to choose cases where there is conflict and then look for a population or resource dimension. If you look hard enough, “it’s always possible to find some connection,” said Urdal.

However, quantitative studies are also imperfect, cautioned Urdal, because most of them use national-level data, which do not capture local dynamics. In addition, they have a tendency to ignore conflicts in which the state is not involved.

Two Sub-National Studies: India and Indonesia

Urdal sought to avoid these problems by using sub-national data and including political violence and riots, as well as armed conflict, in his quantitative studies of India and Indonesia. From 1956-2002, he found that high rural population growth and density, as well as declining agricultural wages, increased the likelihood of violence in Indian states. Surprisingly, those states with high rates of urban population growth were less likely to experience conflict.

In Indonesian provinces, Urdal and his colleagues found a relationship, albeit a weak one, between population growth and non-ethnic violence between 1990-2003. They also found an increased risk of non-ethnic violence in provinces with high population growth and high levels of inequality between different religious groups. However, there was no relationship between land scarcity and conflict.

Forests, Conflict, and Participatory Mapping in Kalimantan: Unintended Consequences

Forty million Indonesians—one-fifth of the population—depend on forests for their livelihoods, said Rhee. Yet much of Indonesia’s forests have never been surveyed, so the people who live there are considered squatters and receive little or no compensation from the logging and mining industries. This inequity has generated both violent and non-violent conflict between the indigenous dayaks, the government, and extractive-industry companies.

In an attempt to resolve some of this conflict, the Center for International Forestry Research initiated a participatory mapping project in 27 villages in the Malinau district of Kalimantan in 1999. Participatory mapping enables dayaks to establish land rights and negotiate compensation from companies.

Following the 1998 ousting of President Suharto, district governments, rather than the central government, began issuing timber permits. The villages in Malinau often used the maps they had created to justify their claims to the land. But the district government did not cross-check the claims, so this generated inter- and intra-village conflict—roadblocks, protests, and lock-ups of timber equipment.

Although the “cowboy logging” that characterized the late 1990s and early 2000s has largely ceased, Rhee believes it may be replaced by “carbon cowboys” seeking to capitalize on the UN Reduced Emissions from Deforestation and Degradation (REDD) program, which aims to reduce carbon emissions by paying governments to preserve forests. “With climate change, and the link between climate change and forests, Indonesia is very much on the map again,” said Rhee.

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How Do Recent Population Trends Matter To Climate Change?, from Population Action International, offers the latest research from this constantly changing area of inquiry.

U.S. Global Health and National Security Policy, a timely report by the Center for Strategic and International Studies, examines major threats to human health and international stability, including HIV/AIDS, SARS, pandemic influenza, and bioterrorism.

In the coming decades, Russia will confront “accelerated population decrease; a dwindling of the working-age population; the general ageing of the population; the drop in number of potential mothers; a large immigrant influx; and a possible rise in emigration rates,” warns a new report from the UN Development Programme.

In The National Interest and the Law of the Sea, the Council on Foreign Relations’ Scott Borgerson argues that ratifying the Law of the Sea Convention is vital to protecting the United States’ national security, economic, and environmental interests.

David Sullivan of Enough debates Harrison Mitchell and Nicolas Garrett of Resource Consulting Services (RCS) on the links between conflict and mining in the Democratic Republic of the Congo (DRC). RCS recently published a report arguing that mineral extraction is key to DRC’s development and not the primary cause of conflict in North Kivu.

Responding to the ubiquitous Monsanto ads that ask, “9 billion people to feed. A changing climate. Now what?,” Tod Preston of Population Action International responds, “family planning and empowering women, that’s what!”

Water and War, a publication of the International Committee of the Red Cross (ICRC), outlines how the ICRC provides access to clean water during conflict and humanitarian disasters.

Every day it seems the headlines bring new worries about the future of Pakistan. But among the many challenges confronting the nation—including a growing Taliban insurgency—one significant problem remains largely undiscussed: its rapidly expanding population.

Consider this: Pakistan’s population nearly quadrupled from 50 million in 1960 to 180 million today. It’s expected to add another 66 million people—nearly the entire population of Iran—in the next 15 years. UN projections predict that by the late 2030s, Pakistan will become the fourth most populous country in the world, behind India, China, and the United States.

And believe it or not, the demographic outlook for Pakistan got bleaker in recent weeks. The new medium-range UN projections for Pakistan’s total population have been raised to 335 million for 2050—45 million higher than the UN projection just two years ago. Why the change? Because birth rates aren’t falling as had been predicted—women in Pakistan have an average of four children—and unmet need for family planning remains high.

The case of education provides a snapshot of how these demographics affect Pakistan, from basic quality-of-life issues to the country’s overall stability. Even though the official literacy rate in Pakistan has increased from about 18 percent to 50 percent since 1970, the number of illiterate people has simultaneously jumped from 28 million to 48 million. The literacy rate for women stands at a shockingly low 35 percent.

As public schools have become increasingly overcrowded, more parents have turned to madrasas in an attempt to educate their children—or at least their sons. It’s no secret that some of Pakistan’s madrasas have ties to radical religious and terrorist-affiliated organizations.

So what does this portend for the future?

Even assuming large infusions of assistance from the United States, Pakistan’s public school system will become even more overwhelmed in the years ahead. Building enough schools and hiring enough teachers would be daunting in any country, let alone one facing as many challenges as Pakistan. It seems likely that enrollments in madrasas will swell, and more children will face a future with no schooling whatsoever. Clearly, this is not a recipe for a more stable and peaceful Pakistan.

Pakistan’s rapid population growth is not inevitable, however. A key driver is lack of access to family planning, which is symptomatic of the overall poor status of women and girls. More than 25 percent of Pakistani women have an unmet need for family planning—meaning the demand is clearly there—and nothing in the Koran prohibits its usage. In other majority-Muslim nations, such as Algeria, Bangladesh, and Iran, family planning has been prioritized and is widely used.

Unfortunately, family planning programs in Pakistan and many developing countries have suffered from both inattention and funding cuts in recent years. Traditionally, the United States has been a major source of funding and technical assistance, but since 1995, U.S. international family planning assistance has fallen 35 percent (adjusted for inflation), even as demand has increased.

Today, more than 200 million women—many of them in the most impoverished parts of the world—have an unmet need for family planning. In countries like Pakistan, the resulting rapid population growth makes it increasingly difficult to provide sufficient education, health care, housing, and employment—and depletes land, water, fisheries, and other vital natural resources.

The Obama administration recently proposed a new U.S. assistance strategy for Pakistan—and a key component is a significant increase in development and economic assistance. Let’s hope it will include an increase for family planning. It would be a wise investment in a brighter, more stable future—for Pakistan and for the world.

Tod Preston is vice president for U.S. government relations at Population Action International.

Photo: Children in Jinnah Colony, Karachi, Pakistan. Courtesy of Flickr user NB77.

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The authors of Asia’s Next Challenge: Securing the Region’s Water Future, a report by the Asia Society, argue that population growth, urbanization, and climate change are converging to make water an important security issue in Asia. The authors argue for including water in policy and development discussions, but warn against “securitizing” the issue.

“The Arctic could slide into a new era featuring jurisdictional conflicts, increasingly severe clashes over the extraction of natural resources, and the emergence of a new ‘great game’ among the global powers,” argue Paul Berkman and Oran Young, two researchers at the University of California, Santa Barbara, in Science. “However, the environment provides a physical and a conceptual framework to link government interests in the Arctic Ocean, as well as a template for addressing transboundary security risks cooperatively.” In the Washington Times, Paula Dobriansky, former U.S. undersecretary of state for democracy and global affairs, argues that the Antarctic Treaty offers lessons for dealing with competing territorial claims in the Arctic.