Showing posts from category demography.
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Book Launch: ‘Human Population: Its Influence on Biological Diversity’
›Measurements of “human population density and growth can be used to identify changes in the viability of native species, and more directly, in changes in ecological systems or habitat quality,” said Richard Cincotta, consultant at the Environmental Change and Security Program and demographer-in-residence at the Stimson Center, speaking at the book launch of Human Population: Its Influence on Biological Diversity.
Cincotta was joined by coeditor L.J. Gorenflo, associate professor of landscape architecture at Penn State University, and contributing author Christopher Small, research professor at the Lamont-Doherty Earth Observatory and adjunct professor at Columbia University, to discuss the book’s objectives, its diverse and multidisciplinary contributors, and its policy implications. [Video Below]
Establishing a Handbook for the Field
“Human Population: Its Influence on Biological Diversity establishes a handbook for the field,” said Cincotta. While the scientific volume is specifically geared towards researchers and conservation managers rather than policymakers, “there are a few Washington-type policy messages that are useful,” he added.
Human population affects biological diversity in multiple ways. While population density alone can be strongly indicative of the viability of different populations of native species, human activities and their chemical and energetic byproducts can also have a strong impact, even when human population density is low, said Cincotta.
Conserving Biodiversity in Different Settings
“Planned solutions, based on strategic actions, increasingly are essential,” said Gorenflo, a professor at Penn State University. “The days of letting nature take care itself are probably gone.” Gorenflo presented results from the two chapters he worked on: “Human Demography and Conservation in the Apache Highlands Ecoregion, U.S.-Mexico Borderlands” and “Exploring the Association Between People and Deforestation in Madagascar.”
“Population density seems to be a reasonably good indicator of biodiversity loss,” said Gorenflo. Data from the Apache Highland Ecoregion (a 12 million-hectare area located along the U.S.-Mexico border) indicate that biodiversity tends to drop off at population densities of more than 10 people per square kilometer. Conservation efforts in areas within the ecoregion that are at, or close to, this density threshold will likely encounter challenges to maintaining biodiversity, he said.
Human mobility is a major consideration, said Gorenflo: “Whereas high fertility can create population growth over generations, high mobility can create population growth in a matter of months or years.” In the Apache Highlands, for example, the 40 percent increase in population between 1990 and 2000 was largely caused by migration into U.S. cities in the region.
In Madagascar, Gorenflo and colleagues examined whether population growth and poverty were systematically driving deforestation and loss of biodiversity. Using data from the 1990s, they found that higher population density only slightly raises rates of deforestation and large increases in income only modestly decrease deforestation.
Not surprisingly, they found that the likelihood of deforestation decreased dramatically in protected areas. In addition, proximity to roads or footpaths was associated with significantly higher rates of deforestation. “Roads, footpaths, and protected areas are all policy decisions,” Gorenflo pointed out. “So when bilateral or multilateral organizations decide to invest in development in a place like Madagascar, they can look at these sorts of investments as being important.”
While there are some similarities to be drawn between regions’ experience with population and biodiversity, said Gorenflo, “every locality likely has a slightly different story; you need to do context-specific studies to get a real handle on what is going on.”
The Human Habitat
In his chapter, “The Human Habitat,” Christopher Small of the Lamont-Doherty Earth Observatory said his goal was “to set the stage for some of the more detailed studies by taking a look at the global distribution of human population.”
Using census data and satellite-derived maps of night lights to serve as a “proxy for development,” Small found that “people are everywhere, but they are not evenly distributed.”
At least half the world’s population lives on less than three percent of the inhabitable land, and most people live at densities between 100 and 1000 people per square kilometer. At both local and global scales, population density and city size are dominated by extremes: There are large numbers of small groups of people, and small numbers of large groups of people, he said.
“The environments where people live are more strongly correlated with features of the landscape than they are with climatic parameters,” said Small. While humans have effectively adapted to a range of climates, the majority of people tend to cluster close to rivers, at low elevations, and close to coastlines. Although it was once thought that three-quarters of the world’s population lived in coastal regions, Small’s results show that the actual number is close to half of these previous assumptions.
Understanding the spatial and environmental distribution of population and managing population growth may therefore help minimize negative impacts on specific habitats and biomes, said Small.
Image Credit: “View from a Madagascar Train,” courtesy of flickr user cr01. -
One in Three People Will Live in Sub-Saharan Africa in 2100, Says UN
›June 8, 2011 // By Schuyler Null
Between 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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The Future of Women in the MENA Region: A Tunisian and Egyptian Perspective
›Lilia Labidi, minister of women’s affairs for the Republic of Tunisia and former Wilson Center fellow, joined Moushira Khattab, former minister of family and population for Egypt, on June 2 at the Wilson Center to discuss the role and expectations of women in the Egyptian and Tunisian revolutions, as well as issues to consider as these two countries move forward. Haleh Esfandiari, director of the Middle East Program at the Wilson Center, moderated the event.
Labidi focused on the participation of women in the protests in Tunisia and their aftermath. She emphasized that these developments give hope, as they attest to the mixed nature of the demonstrations in which women were not sidelined but marched amongst men. (Editor’s note: The gender balance of the protests was a feature demographer Richard Cincotta also observed in his post about Tunisia’s age structure.) She pointed to the way that Tunisian women have entered the public space and played vital roles in spreading images and information about the protests around the world. Labidi said that although the future of women in Tunisia remains uncertain, it is unlikely that they will cease to be active and retreat to the private sphere. She commented on the new parity resolution calling for an equal number of male and female candidates for each party in Tunisia’s July elections and the opportunities afforded by an increase in political pluralism and media outlets.
Labidi also elaborated on her efforts as Tunisia’s minister of women’s affairs, discussing the ministry’s results and future goals. She stressed the importance of aiding women living in poverty, changing the cultural role of women, and boosting confidence in the government’s ability to address women’s needs. In particular, Labidi spoke of the work to expand the ministry’s regional offices to become more accessible to rural and non-elite sectors of Tunisian society. She hoped that recent events will encourage recognition of women as regional political actors and that the United States will expand intellectual and political ties with Tunisia.
Khattab pointed out the numerous similarities between the role of women in Tunisia and in Egypt, saying that women’s participation in public demonstrations and disseminating information to the media “has set the stage for a paradigm shift in the rights of citizens.” She noted that there are many advances yet to be made for women, youth, and other groups but that the protests have begun a change towards “a democratic, rights-based Egypt.”
Although she sees women’s involvement as a part of continuing progress in women’s rights, Khattab made note of the various obstacles to freedom that women in Egypt still face. She expressed concern that the politics of revenge against the previous regime might sideline women in politics, who already have less representation in the government than they did under Mubarak and have been excluded from the committee drawing up a new Egyptian constitution. She noted the need to change social perceptions that “women already enjoy all their rights.” She also discussed how the new media freedom gives fundamentalist groups a platform to propagate narrow interpretations of faith that call for the repeal of some of the existing women’s rights laws. She posed the question of what interpretations of the faith would allow for a greater harmonization with domestic laws based on the ideals of human rights.
Laura Rostad is an intern with the Middle East Program at the Woodrow Wilson Center.
Photo Credit: David Hawxhurst/Wilson Center. -
Yemen Beyond the Headlines: Women’s Health and Well-Being, Foundations of a Fragile State
›Part one of the “Yemen Beyond the Headlines: Population, Health, Natural Resources, and Institutions” event, held at the Wilson Center on May 18.
“Ultimately, whether Yemen is able to achieve its goals for social and economic development, will to a large extent depend on its future population growth and size,” said Gary Cook, senior health advisor at the U.S. Agency for International Development, in his opening address on Yemen’s population and development challenges at the Woodrow Wilson Center. [Video Below]
Cook was joined on the opening panel of the all-day conference, “Yemen Behind the Headlines: Population, Health, Natural Resources, and Institutions,” by Dalia Al-Eryani, former project officer for Pathfinder International’s Safe Age of Marriage Project, and T.S. Sunil, professor of sociology at the University of Texas San Antonio, to discuss issues related to population, reproductive health, and child marriage. Drawing speakers and participants form the Middle East, Europe, and the United States, the conference was part of the Wilson Center’s HELPS Project, a multi-year effort to deepen understanding of links among health, environment, livelihoods, population and security.
Yemen’s Population and Development Challenges
Since 1950, the population of Yemen has increased from 4.3 million to 24 million, with an annual population growth rate above three percent, Cook said. High fertility drives Yemen’s rapid population growth, with an average total fertility rate (TFR) of 5.5 births per woman. Rates are even higher in rural areas and among women with limited or no education, he said.
Future population growth will have tremendous impacts on the country’s economy, education, health, and natural resources, said Cook, and “there is a very large gap between the high fertility assumption and the low fertility assumption.”
An additional 1.5 million new people will be added to the labor force and 29 percent less income per person will drop by 29 percent by 2035 if current fertility rates persist, said Cook. Though Yemen has a national population policy that outlines TFR targets of 3.3 in 2025 and 2.1 by 2035, the latest UN Population Division projections suggest these expectations are optimistic. Education and health demands and expenditures will increase greatly, while per capita arable land and water will decrease, exacerbating ongoing land and water scarcity in Yemen.
“We do not have enough local and external resources to address the needs of a rapidly expanding population,” said Cook. “Helping couples who want to limit and space their births will also help the nation,” he added.
Law, Culture, and Child Marriage
“Enforced by law and culture alike,” early marriage in Yemen is common, said Al-Eryani, with over 50 percent of Yemeni women married before they are 17 years old, and 14 percent before they turn 14. Opponents of child marriage argue that children are neither emotionally nor physically ready for marriage and that the practice increases health risks and lowers educational opportunities for girls.
Currently, Yemen has no minimum age for marriage law, and recent attempts to pass such a law have failed, said Al-Eryani. “The practice never really has been questioned.”
“There is a belief that child marriage is a good thing – both for the girl and for the family,” she said. Early marriages are a way to build family honor and tribal ties, and many poor families see opportunity for financial gain in the form of a dowry. “These families see no socially acceptable alternatives for the girl…and all of this is supported by the belief that Islam condones child marriage,” she said.
Through awareness sessions, health fairs, and school plays, the community-based Safe Age of Marriage Project has helped to change social norms around child marriage in two districts in Yemen.
After participating in the program, community members were significantly more likely to believe that delaying marriage gives girls more educational opportunities, empowers them to make decisions, and promotes healthy pregnancy and children, Al-Eryani said. Child marriage was banned in one of the communities, and the marriages of 53 girls and 26 boys were canceled as the result of the project. In the future, she hopes involving more religious and local leaders could further increase the program’s impact.
Youth and “The Reproductive Health Transition”
“When we talk about fertility transition, we only talk about the number of children born,” said Sunil. “A reproductive health transition takes into account not just total fertility rate, but a number of different dimensions.”
Women should have the freedom to decide if, when, and how often to reproduce, said Sunil, through access to safe, effective, affordable, and acceptable family planning methods. They also should have access to quality maternal health care throughout pregnancy and birth, he said.
“It’s a popular belief that Islamic societies with poor and limited resources are not compatible with a reproductive health transition,” said Sunil. “But the onset of a reproductive health transition is underway in Yemen.”
While the transition in Yemen is progressing more slowly than in other countries in the region, many positive trends can be seen among the country’s youth, said Sunil. Trends indicate a drop in fertility rates, especially among younger women; marriage of girls under 15 years old has declined; and contraceptive use among young women age 15 to 24 has increased significantly.
Government and international donor agencies “must capture the growing momentum among the younger cohort” and meet demands for better education, postponement of marriage, and healthcare services, said Sunil. Continued focus on adolescent reproductive health will be the key to achieving the reproductive health transition, he concluded. “From an economic and human perspective, the growing young population in Yemen is potentially a tremendous asset.”
See parts two and three of “Yemen Beyond the Headlines: Population, Health, Natural Resources, and Institutions” for more from this Wilson Center event.
Sources: Population Reference Bureau, UNICEF, U.S. Agency for International Development.
Image Credit: “Young girl with her mom – Sanaa,” courtesy of flickr user fveronsei1. -
Watch: Eric Kaufmann on How Demography Is Enhancing Religious Fundamentalism
›May 24, 2011 // By Schuyler Null“There’s a belief, often amongst political scientists and social scientists, that demography is somehow passive and that it doesn’t really matter,” said Eric Kaufmann, author of Shall the Religious Inherit the Earth: Demography and Politics in the 21st Century and professor at Birkbeck College, University of London in this interview with ECSP. “Part of the message of this book is that demography can lead to social and political change.”
“In this case what I’m looking at is the way that demography can change the religious landscape,” Kaufmann said. “It can actually enhance the power of religion, especially religious fundamentalism in societies throughout the world.”
“Purely secular people, who have no religious affiliation, they are leading the move towards very low levels of fertility, even down to the level of one child per woman,” Kaufmann said. On the other hand, fundamentalists are reacting to this trend and deliberately deciding not to make the demographic transition, he said. “In doing so, the gap between secular and religious widens” and is actually more pronounced in places where the two groups collide.
“You can see this in the Muslim world,” said Kaufmann. “If you look at urban areas such as the Nile Delta and Cairo, in those urban cities, women are who are most in favor of Shariah have twice the family size of women who are most opposed to Shariah, whereas in the Egyptian countryside, the difference is much less because they haven’t been exposed to the same modernizing pressures.”
These dynamics affect the Western world as well, especially when you factor in migration, said Kaufmann: “The fact that almost all the world’s population growth is occurring in the developing world, which is largely religious, means that a lot of people are moving from religious parts of the world to secular parts of the world,” he said. “That effects, for example, countries like the United States or in Western Europe, which are receiving immigrants, and it means in the case of Western Europe – which is a very secular environment – that immigrants bring not only ethnic change but on the back of that, religious change; they make their societies more religious.” -
Mapping Population and Climate Change
›Climate change, population growth, unmet family planning needs, water scarcity, and changes in agricultural production are among the global challenges confronting governments and ordinary citizens in the 21st century. With the interactive feature “Mapping Population and Climate Change” from Population Action International, users can generate maps using a variety of variables to see how these challenges relate over time.
Users can choose between variables such as water scarcity or stress, temperature change, soil moisture, population, agriculture, need for family planning, and resilience. Global or regional views are available, as well as different data ranges: contemporary, short-term projections (to the year 2035), and long-term projections (2090).In the example featured above, the variables of population change and agricultural production change were chosen for the time period 1990-2020. Unfortunately, no country-specific data is given, though descriptions in the side-bar offer some helpful explanations of the selected trends.
In addition, users can view three-dimensional maps of population growth in Africa and Asia for the years 1990, 2035, and 2090. These maps visually demonstrate the projected dramatic increases in population of these regions by the end of the century. According to the latest UN estimates, most of the world’s population growth will come from Africa and Asia due to persistently high fertility rates.
Image Credit: Population Action International. -
Ten Billion: UN Updates Population Projections, Assumptions on Peak Growth Shattered
›May 12, 2011 // By Schuyler Null
The numbers are up: The latest projections from the UN Population Division estimate that world population will reach 9.3 billion by 2050 – a slight bump up from the previous estimate of 9.1 billion. The most interesting change however is that the UN has extended its projection timeline to 2100, and the picture at the end of the century is of a very different world. As opposed to previous estimates, the world’s population is not expected to stabilize in the 2050s, instead rising past 10.1 billion by the end of the century, using the UN’s medium variant model.
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Family Planning as a Strategic Focus of U.S. Foreign Policy
›May 11, 2011 // By Wilson Center Staff“Family Planning as a Strategic Focus of U.S. Foreign Policy,” by Elizabeth Leahy Madsen, was an input paper for the Council on Foreign Relations report, The Role of U.S. Family Planning Assistance in U.S. Foreign Policy. Excerpted from the introduction:
Comprehensive policies that incorporate demography, family planning, and reproductive health can promote higher levels of stability and development, thereby improving the health and livelihood of people around the world while also benefiting overarching U.S. interests. U.S. foreign aid will be more effective if increased investments are made in high population-growth countries for reproductive health and family planning programs. These programs are cost-effective because they help reduce the stress that rapid population growth places on a country’s economic, environmental, and social resources.
Family Planning and Reproductive Health Programs
Family planning and reproductive health programs have successfully reduced the world’s population growth rate, propelled economic development, and improved women’s lives across the world. When people, and especially women, are given the opportunity and technology to limit their family size, they often choose to do so.
Population trends are motivated by three demographic forces: fertility, mortality, and migration. Although they can have dramatic effects on national and local populations, mortality and migration in particular have relatively little influence globally. Across the world, mortality rates have declined to a point where most children born today live to reach their own reproductive years, though much work remains to reduce the effect of communicable diseases and improve nutrition among the young. Meanwhile, three percent of the world’s population currently lives outside of their birth-countries. Therefore, while migration is increasing and an important demographic force, it does not occur at a scale large enough to significantly affect global-level demography.
Fertility rates currently are – and in the short-term will remain – the most important driver of global demographic trends. The total fertility rate, or average number of children born to each woman, has been estimated at 2.7 for the period between 2000 and 2005, a decline from 3.6 children per woman in the early 1980s. Given this decline, population projections generally assume future declines in fertility rates. For example, the widely cited “medium-fertility variant,” which is the United Nations’ projection of a world population growing from 6.9 billion in 2010 to 9.1 billion by 2050, relies upon an assumption that the global fertility rate will decline by 24 percent to two children per woman. However, if fertility rates remain constant at current levels, the world’s population would reach 11 billion by 2050. Fertility rates, whether they decline or remain at current levels, are not distributed evenly among countries and regions.
Continue reading or download the full report, “Family Planning as a Strategic Focus of U.S. Foreign Policy,” from the Council on Foreign Relations.
