Differential High Fertility and Demographic Transitions

2021 ◽  
pp. 173-186
Author(s):  
Jay O'Brien
Keyword(s):  
High Fertility ◽  
Demographic Transitions

scholarly journals Human population growth and the demographic transition

2009 ◽  
Vol 364 (1532) ◽  
pp. 2985-2990 ◽  
Author(s):  
John Bongaarts
Keyword(s):  
Life Expectancy ◽  
Demographic Change ◽  
Demographic Transition ◽  
Human Population ◽  
High Fertility ◽  
Demographic Transitions ◽  
The World ◽  
Demographic Processes ◽  
Older Populations ◽  
Developed World

The world and most regions and countries are experiencing unprecedentedly rapid demographic change. The most obvious example of this change is the huge expansion of human numbers: four billion have been added since 1950. Projections for the next half century expect a highly divergent world, with stagnation or potential decline in parts of the developed world and continued rapid growth in the least developed regions. Other demographic processes are also undergoing extraordinary change: women's fertility has dropped rapidly and life expectancy has risen to new highs. Past trends in fertility and mortality have led to very young populations in high fertility countries in the developing world and to increasingly older populations in the developed world. Contemporary societies are now at very different stages of their demographic transitions. This paper summarizes key trends in population size, fertility and mortality, and age structures during these transitions. The focus is on the century from 1950 to 2050, which covers the period of most rapid global demographic transformation.

scholarly journals Meat and Nicotinamide: A Causal Role in Human Evolution, History, and Demographics

2017 ◽  
Vol 10 ◽  
pp. 117864691770466 ◽  
Author(s):  
Adrian C Williams ◽  
Lisa J Hill
Keyword(s):  
Human Evolution ◽  
De Novo ◽  
Homo Sapiens ◽  
Good Health ◽  
Vitamin B ◽  
High Fertility ◽  
Population Stability ◽  
Meat Intake ◽  
Demographic Transitions ◽  
High Intelligence

Hunting for meat was a critical step in all animal and human evolution. A key brain-trophic element in meat is vitamin B3 /nicotinamide. The supply of meat and nicotinamide steadily increased from the Cambrian origin of animal predators ratcheting ever larger brains. This culminated in the 3-million-year evolution of Homo sapiens and our overall demographic success. We view human evolution, recent history, and agricultural and demographic transitions in the light of meat and nicotinamide intake. A biochemical and immunological switch is highlighted that affects fertility in the ‘de novo’ tryptophan-to-kynurenine-nicotinamide ‘immune tolerance’ pathway. Longevity relates to nicotinamide adenine dinucleotide consumer pathways. High meat intake correlates with moderate fertility, high intelligence, good health, and longevity with consequent population stability, whereas low meat/high cereal intake (short of starvation) correlates with high fertility, disease, and population booms and busts. Too high a meat intake and fertility falls below replacement levels. Reducing variances in meat consumption might help stabilise population growth and improve human capital.

Population Policies in Turkey and Demographic Changes on a Social Map

2016 ◽  
Vol 6 (2) ◽  
pp. 240-266 ◽  
Author(s):  
Mustafa Murat Yucesahin ◽  
Tuğba Adalı ◽  
A Sinan Türkyılmaz
Keyword(s):  
Population Policy ◽  
Developed Countries ◽  
Ageing Population ◽  
Demographic Changes ◽  
Demographic Transitions ◽  
Population Policies ◽  
Demographic Indicators ◽  
The Social ◽  
Working Age ◽  
Low Levels

Compared to its past structure, Turkey is now a country with low levels of fertility and mortality. This junction that Turkey now has reached is associated with a number of risks, such as an ageing population, and a decreasing working-age population. The antinatalist policy era of Turkey was followed by a period of maintenance, yet the recent demographic changes formed the basis of a pronatalist population policy from the government’s view. This study discusses the link between demographic change and population policies in Turkey. It further aims to position Turkey spatially in relation to selected countries that are in various stages of their demographic transitions with different population policies, using a multidimensional scaling approach with data on 25 selected countries from the UN. The analysis is based on a 34-year period, 1975-2009, so as to better demonstrate Turkey’s international position on a social map, past and present. Our findings suggest that Turkey’s position on the social map shifted towards developed countries over time in terms of demographic indicators and population policies. 

ON-FARM FORESTRY DEVELOPMENT OPTIONS FOR NORTHLAND

1986 ◽  
pp. 27-32
Author(s):  
J.S. Clark
Keyword(s):  
Joint Ventures ◽  
Low Fertility ◽  
High Fertility ◽  
Financial Returns ◽  
Farm Forestry ◽  
Hill Country ◽  
Financial Position ◽  
On Farm

Agroforests and woodlots offer Northland hill country farmers investment and diversification opportunities. Agroforests have less effect on the "whole farm" financial position than woodlots, especially where a progressive planting regime is adopted and where no further borrowing is required. Establishment and tending costs for agro-forests are lower, and returns come much sooner. The proven opportunity for continued grazing under trees established in this manner, apart from a short post-planting period, further enhances the agroforesty option. Even where there is reluctance on a farmer's part to plant trees on high fertility land, the expected financial returns from agroforests on low and medium fertility land will increase the overall long-term profitability and flexibility of the whole farming operation. Woodlots may be more appropriate on low fertility areas where weed reversion is likely. Joint ventures may be worth considering where farm finances are a limited factor. Keywords: On-farm forestry development, Northland hill country, agroforestry, woodlots, diversification, joint ventures, progressive planting regimes, grazing availability.

DETERMINATION OF THE EFFICIENCY AND EFFICACY OF BIO-CHEMICAL FERTILIZER ON THE SOIL, YIELD AND GROWTH PERFORMANCE OF BLACK PEPPER (Piper nigrum L.)

2015 ◽  
Vol 4 (3) ◽  
pp. 460-468
Author(s):  
Yap Chin Ann
Keyword(s):  
Growth Performance ◽  
Nutrient Management ◽  
High Growth ◽  
Black Pepper ◽  
Chemical Fertilizer ◽  
Piper Nigrum ◽  
High Fertility ◽  
Fertility Level ◽  
Area Index ◽  
K 12

The last nutrient management review of black pepper was done in 1968. There is, therefore, a need to develop new technology to improve pepper production and transfer that technology to production site. This experiment was carried out to study the effect of newly developed biochemical fertilizer on some physiological characteristics, yield and soil fertility of pepper. The treatment consisted of T1 (BS): chemical fertilizer (N:12%, P:12%, K:17%); T2 (BK1): biochemical fertilizer F1 N:15%, P:5%, K:14) and T3 (BK2): biochemical fertilizer F2 (N:13%, P:4%, K:12). The biochemical fertilizer F1 out-yielded chemical and biochemical fertilizer F2 by 75.38% and 16.45% respectively with the higher yield being associated with various phonotypical alterations, which are reported here. Significant measureable changes were observed in physiological processes and plant characteristics, such as large leaf area index, more chlorophyll content and high photosynthesis rate coupled with lower transpiration rate in biochemical fertilizer F1(BK1) treatment compared with other treatment. The high fertility level in biochemical fertilizer F1 and biochemical fertilizer F2 (BK2) reflected the important of organic material in improving soil quality. In conclusion, the achieve high growth performance and yield in pepper, chemical fertilizer alone is insufficient whilst combination of organic and inorganic fertilizer with balance nutrient content gave a significant increase in yield and growth of pepper. 

Changes in demand for children between 2003 and 2013 in Nigeria: Evidence from survey data

2018 ◽  
Vol 15 (1) ◽  
pp. 16-29
Author(s):  
Stella Babalola ◽  
Joshua O. Akinyemi ◽  
Clifford O. Odimegwu
Keyword(s):  
Health Surveys ◽  
Contraceptive Use ◽  
Religious Affiliation ◽  
Large Family ◽  
Fertility Rate ◽  
Demographic And Health Surveys ◽  
High Fertility ◽  
Fertility Desire ◽  
The North ◽  
Demand For Children

Abstract Nigeria has one of the highest fertility rates in Africa. Data from 2013 Demographic and Health Surveys indicate a virtual stagnation of fertility rate since 2003. Low contraceptive use and pronatalist attitudes are among the factors contributing to the high fertility rate in Nigeria. In this manuscript, we pooled data from three most recent waves of Demographic and Health Surveys to examine trends in demand for children over time and identify the factors associated with change in demand for children. The data show that demand for children has declined since 2003 although not monotonically so. Variables that were positively associated with increased likelihood of desiring no additional children were residence in the South-West (as opposed to residence in the North-Central), exposure to family planning (FP) messages on the mass media, number of children ever born, educational level, and urban residence. In contrast, uncertainty about fertility desire was more widespread in 2008 compared to 2013 although less widespread in 2003 than in 2013. The likelihood of being undecided about fertility desire was positively associated with discrepancies in family size desires between husband and wife, parity and Islamic religious affiliation. Programs should aim to increase access to effective contraceptive methods and promote demand for contraceptives as a way of fostering a sustainable reduction in demand for children. Furthermore, strategies that address uncertainty by fostering women’s understanding of the social and health implications of large family sizes are relevant.

Potentials for demographic dividend and rapid economic growth in Mali: What policy scenario would yield the greatest dividend?

2018 ◽  
Vol 15 (1) ◽  
pp. 7-15
Author(s):  
Clifford O. Odimegwu ◽  
Emmanuel O. Olamijuwon
Keyword(s):  
Family Planning ◽  
Economic Reforms ◽  
High Fertility ◽  
Economic Policies ◽  
Access To Education ◽  
Demographic Dividend ◽  
Policy Scenario ◽  
Rapid Economic Growth ◽  
Per Capita ◽  
The Cost

Abstract The demographic changes occurring in Mali, evident in high fertility but declining mortality rates have raised optimism about the prospects of reaping demographic dividend. However, it remains unclear how soon and what policy scenario would yield the largest demographic dividend in the country. We used a demographic-economic model “DemDiv” to assess the prospects of reaping a demographic dividend in Mali by 2050. We illuminate this further by examining the cost and implications of different combination of education, family planning and economic policies. The results show that by increasing access to education, family planning services coupled with strong economic reforms, Mali’s GDP per capita will be $27,044 by 2050. This high per capita GDP is almost thrice the benefit of prioritising only economic reforms. Mali would also have a GDP of $977 billion. These findings highlight the need for sound demographic and market-oriented economic policies for Mali to reap a large demographic dividend by 2050.

Skills Gap among Sexual and Reproductive Healthcare Professionals in Cameroon

2019 ◽  
Vol 21 (1) ◽  
Author(s):  
Michael N. Nkwenti ◽  
Ishan Sudeera Abeywardena
Keyword(s):  
Reproductive Health ◽  
Sexual And Reproductive Health ◽  
Critical Role ◽  
Health Sector ◽  
Healthcare Sector ◽  
High Fertility ◽  
Skills Gap ◽  
North West ◽  
Health Practitioners ◽  
Reproductive Healthcare

Over the last 10 years, the state of sexual and reproductive health in Cameroon has been challenging with rising levels of sexually transmitted diseases, the high fertility rate, and high infant and maternal mortality rates. Some researchers attributed these challenges to the limited number and quality of sexual and reproductive health personnel working in health facilities across the country. The North West Region of Cameroon was taken as a unit of study to probe into the skills gap among sexual and reproductive health practitioners. A total of n = 302 participants at a confidence interval of 95 per cent were selected using a stratified random sampling technique to take part in the study. The results indicated that a good number of them have no prior experience in the field of sexual and reproductive health. On the other hand, most of the practitioners’ skills level is situated between intermediate and competent with very few of them being at the expert skills level. It was therefore recommended that most of the participants needs improvement in (i) computer or information technology skills; (ii) research skills; and (iii) leadership development of the specialty. These areas need to be dealt with, as a matter of priority, through training and professional development to enable these professionals to deliver better service in the sexual and reproductive healthcare sector. It was also recommended that, in line with the critical role that sexual and reproductive health practitioners play in Cameroon’s health system, the Ministry of Public Health and other role players in the health sector make sufficient investments in the improvement of the health workforce’s accessibility to information and communication technology.

Are Status of Women and Contraceptive Prevalence Correlated in Pakistan?

2000 ◽  
Vol 39 (4II) ◽  
pp. 1057-1073
Author(s):  
Abdul Hakem
Keyword(s):  
Economic Development ◽  
Annual Growth ◽  
High Rate ◽  
High Fertility ◽  
Historical Trends ◽  
Social And Economic Development ◽  
Contraceptive Prevalence ◽  
The 1960S ◽  
Populous Country ◽  
Status Of Women

Pakistan with an estimated population of around 142.5 million in mid 2001 is the seventh most populous country in the world and fourth in Asia and Pacific countries. The historical trends indicate a continuously increasing growth in population (Table 1). The population of the area now constituting Pakistan was 16.6 million in 1901. Since then the population has increased over eight-fold. Annual growth rates have risen from 1 percent in the first three decades of the century to around 2 percent in the next three decades and after peaking at little over 3 percent in the 1960s, has started showing a declining trend. Currently it is estimated that Pakistan’s population is growing at around 2.1 percent, still a very high rate of annual growth in population. Major contributing factor to the fast growth in population of Pakistan has been high fertility which has remained high for a very long period. It is evident that nearly 100 million population has been added to the population of Pakistan since 1961, that is, during the last four decades. Such rapid growth in population has several adverse implications for the socio-economic development of the country which has been offsetting the gains in social and economic development.

Determinants of Aggregate Fertility in Pakistan

1986 ◽  
Vol 25 (4) ◽  
pp. 553-570
Author(s):  
Ghulam Yasin Soomro
Keyword(s):  
Developing Countries ◽  
Economic Status ◽  
Development Planning ◽  
Natural Increase ◽  
High Fertility ◽  
Household Level ◽  
Fertility Behaviour ◽  
Human Fertility ◽  
Control Programmes ◽  
The Difference

Experiencing high fertility and declining mortality levels, the developing countries are today faced with the problem of relatively high rates of natural increase in their populations. This pace of growth in population, influenced by high fertility levels, impedes the overall development planning. As pointed out in a document prepared by the Planning Commission of Pakistan, 'A vicious circle is set in motion in which high fertility and socio-economic stagnation breed upon each other' [5]. In the developing countries, development programmes including birth control programmes are in operation. The sustained high fertility levels, therefore, call for more insights into the mechanisms operating in the society and influencing fertility. Studies of fertility behaviour are conducted at both micro and macro levels. The difference between micro and macro is a matter of emphasis rather than one of kind, and both approaches are concerned with each level of social aggregation. Macrolevel studies describe the level and pattern of change resulting from the ongoing socio-econornic development in the society as a whole and do not explain variations in fertility at the household level [12]. However, development programmes, which are implemented at aggregate levels defined by geographical boundaries, influence the population in terms of socio-economic status and fertility behaviour. There are many factors which affect human fertility individually or collectively. Attempts have been made to identify these factors, and conceptual frameworks have been developed to explain the causal hypotheses. In this context mention may be made of the demographic transition theory, which is often applied to study fertility behaviour.

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