Monday, 22 August 2011

Population Management - Wiki Posts

I happened across this discussion on, of all things an Avatar Wiki... read them through, what do you think? Could you write a detailed comment using your learning from the course over the last few sessions?

 
Post 1:
'There are too many of us already, and we must not let our numbers grow even further beyond what Earth's resources can provide. If we want to keep/improve our current standard of living, those who are able should take precautions.

A few of the more extreme ideas (i.e. killing off "unnecessary" members of a population), while theoretically efficient, seem elitist and unnecessarily drastic and cruel from a human standpoint.

Then there are people who believe in the ideal that either nature or an all-powerful being will eventually "balance out" our growing numbers (Eywa?). Yes, people die every day, but lives taken by disease epidemics, natural disasters, or wars should not be thought of as expendable just because they were in the wrong place at the wrong time. In spite of the vast number of natural selection believers, we humans can take advantage of a very simple option to keep our numbers in check.

The total world population will reach about 9 billion in the year 2042, up from the documented 6 billion in 1999. Over 43 years, that's a 50% increase, or an additional 3 billion people. That's simply too many!

Some world governments presently have population limitation programs in place (China), or are developing new forms of contraception.

The human race can stop overpopulation at the source by not having as many children as we currently do. Some may consider this lowering of the planet's birth rate to be an extreme or even blasphemous idea, but many believe that it's exactly the kind of cautious and expeditious measure we need to take. Mathematically speaking, this reduction is certainly not a quick fix, but it is definitely more humane than selective euthanasia. Simply put, it focuses not on ending lives that already exist, but on creating lives less frequently.

I think it's almost becoming a necessity at this point. It's pretty evident by now that we've gone beyond a sustainable population.

So what do you think?

Should governments step in and limit population growth?

You can really answer that question with just a yes or no. Or you can explain your answer. It's up to you.'

--Mitakuye Oyasin - Lakota Oyate 17:11, January 10, 2010 (UTC)



Followed by:
Post 2:

population of the earth is going to stabilise anyway. I recommend looking at the demographic transition model, which you can view a simplified chart of here: http://upload.wikimedia.org/wikipedia/commons/5/5e/Stage5.svg

basically shows how the birth, death rate and life expectancy change as a country becomes more developed. Countries like Germany and UK are already entering stage 5 of the demographic model, and their population would have already flattened out were it not for immigration.

July 9 by Cadellin

Friday, 12 August 2011

Arguing about different models and theories...

The ideas of Malthus and Boserup have, like so many other theories, been the subject of debate and academic discussion... who got it right? Well, like all generalisations, it would be fair to say that they both got some things right, but that their models have to be viewed in the context of a more complex reality and also with the benefit of hindsight (Malthus was working in the 18th and 19th century, while Boserup presented her work in 1965). Given the recognition that such ideas are necessarily generalisations and thus simplifications of real-world conditions, it is entirely reasonable to expect some limitations in their accuracy when applied to specific examples. General applicability is one of the aims of theories and also one of their strengths... the basic ideas provide a starting point for understanding the real world and, as understanding progresses, complexity and specificity can be introduced to explain our observations and to make predictions, thus providing a platform from which to propose management strategies.



Debate about the relative virtues of apparently competing ideas is healthy and necessary in scientific learning. Theories should be contested and tested with rigour. However, some ideas, or elements of them, are plainly incontrovertible and common sense suggests how, where and when they are applicable. These elements should be acted upon. For example, the growth of populations to levels beyond the ability of specific environments to provide sufficient food may result in a population "check"... starkly put: poverty, malnutrition and possibly famine. Of course, we understand that the "open" nature of communities means that there would (hopefully) be intervention to prevent a human tragedy, but the basic idea still works at a sub-global level. It is also possible, even likely, that given the threat of diminishing food supplies; ways of increasing production may be developed. Irrigation, improved strains of crops and modified farming/cultivation techniques provide examples of this process at work around the world. Given this understanding (and considerable evidence to support these ideas), measures to manage population seem appropriate in areas where growth is likely to impact negatively on human welfare and efforts to improve sustainable production of food where methods are below optimum could be undertaken.



Management of population and production are certainly not new and it would be unfair to suggest that these are not already high on the agenda of organisations ranging from charities and NGOs to governments and international organisations. However, it might be very productive if some of the energy and intellect spent debating the theories were directed toward understanding how these ideas could be used to guide our management of production and population in environmentally sustainable and culturally sympathetic ways. This is not just an issue for LEDCs and areas where there is population pressure on specific environments. We understand that although local communities are not closed, the global community is! As such, the warnings of Malthus, even taking into account the ingenuity and innovation of humans referred to by Boserup, must be taken seriously. The local tragedies seen in, for example, sub-Saharan Africa and particularly the Horn of Africa are a stark insight to the potential suffering that results when environmental and socio-political factors combine to create a situation in which populations are no longer able to support themselves.



A holistic understanding, however flawed, of the world suggests that food production and population management cannot be successful without consideration of other factors. Technology, politics, economics, justice, religion, cultural perspectives and equality issues, among others, all play a part in the development of effective and sustainable human communities. They are what complicate management. They are what energy and effort should be applied to if issues about food supply and population are to be addressed with due consideration of the finite nature of some resources and the threats that waste production present for the balance of the environmental systems upon which humans also depend... energy use, pollution, climate, health, conflict management are all intimately linked with management of food production and the health and welfare of people globally.



How does humanity move forward in this respect? Let's take a lesson from both Boserup and Malthus... although they may not have placed great emphasis on it, their theories assume "closed" communities in which there is no movement of people or materials inward or outward. This simplifying assumption has been criticised widely. However, if we step away from our parochial perspectives for a moment and consider our lives at a global scale, both theories gain credibility... they clearly represent the threat that population growth could present and the need to innovate if a population:food crisis are to be avoided. Even if "necessity is the mother of invention", it is clear that some communities are unable to innovate in the time available to avoid hardship. Perhaps the time lag between innovation globally and need could be avoided by action at a global community level to moderate population growth... what would that take? Cooperation, less competitive resource acquisition, shared responsibility for humanity and the life support system of planet earth... long term planning rather than "short-termism" perpetuated by many political systems, individual awareness of the issues facing humanity rather than just individuals and small groups, tolerance and acceptance of a shared destiny? How can the privileged, predominantly "Western" communities begin to work alongside communities where suffering and poverty, frustration and, increasingly, vengeful attitudes are widespread?



Population and resource issues are intimately linked with other concerns at a global scale. Inequality in wealth, access and demand for resources, health and education, terrorism enacted by groups with no obvious alternative, "imperialism" perpetrated by powerful states in an effort to control the distribution of key resources to name but a few. Do governments have the power, capacity or the incentive to initiate action on a global scale to address the root causes of the concerns facing so many smaller groups of humanity? Historically there is no precedent for this... this would be humanity moving into new territory. There are parallel though smaller and simpler examples of effective international action to resolve urgent problems... One, the destruction of Ozone in the upper atmosphere might shine some light on effective mechanisms. After the initial discovery of the thinning of Ozone, its causes and prediction of the likely impact that this would have if repeated in the northern hemisphere, public opinion effectively launched intergovernmental action which legislated for the removal of cfc gasses from many unnecessary applications thus preventing further environmental damage and a human tragedy. Repetition of theoretical leadership and education, public demand and inter-governmental action in the context of managing human population, is however, fraught with cultural, political and religious pitfalls and potential conflicts. Overcoming many of these requires the development of real equality globally so that population management cannot be heralded as yet another means of the rich world subjugating the poor or the manifestation of Western paranoia about becoming over-run by peoples from the economic south, Islamist Maghreb and middle-east or the growing economic giants of the far east. Perhaps the spread of the "individual voice" through modern technology can begin to sing in unison, reflecting true humanitarian attitudes that transcend the doctrine or dogma of existing organisations. Perhaps such a voice will provide the incentive for governments across the political and wealth spectrum to cooperate and take actions that preserve the very life-support systems that are essential for civilised human survival.

DNo/Draft 2013

Population Growth and Food Shortages

Two main theories exist regarding the relationship between population growth and food supply. That proposed by Thomas Malthus and that suggested by Ester Boserup.

In broad terms, Malthus' ideas can be regarded as expressing a pessimistic view in which population growth is geometric unlike food production which is arithmetic. Under these circumstances, population growth is "checked" by the law of diminishing returns in which, even with higher levels of technology, only a small increase in yield is achieved. These marginal returns ultimately serve as a check to population growth.

The implication of this theory would seem to be that, populations that exceed the resources available will collapse back to a level below carrying capacity. In a modern sense, we might recognise such population growth as unsustainable with potentially catastrophic outcomes.

There are a number of criticisms leveled at Malthus' theory including its over-simplification, the effects of un-equal division of wealth, globalisation and the movement of people from areas where population puts pressure on the resources available.

Boserup, in comparison, may be regarded as presenting an optomistic and technocentric view of the relationship between population growth and food production. In effect, she suggested that pressure on food resources would lead to innovation in agriculture to produce more food... essentially summed up by the phrase, "necessity is the mother of invention".

Consider:

  • Which of these theories do you think is most valid and why?
  • Could both have applicability? How?
  • Both theories imply that communities are "closed"... i.e. not open to the movement of people, or goods, in and out of the community. Why is such an assumption problematic in the real world?

Thursday, 11 August 2011

Human Population Growth... ideas for discussion

1) Population growth benefits the human race because more people have more ideas, are inventive and work. Necessity is the mother of inventions. If we run out of living space, we build high-rise blocks of flats; if we need more food, we intensify production.

2) Economic growth is a good thing because it means more people can have safe drinking water, sanitation, collection of refuse.

3) Economic growth is a bad thing as it means we use more resources - fossil fuels, chemicals.

4) Human population growth is leveling off so we shall reach the carrying capacity of the environment and the numbers will fluctuate around it. We can clean things up then.

5) Individuals suffer less from disease as medicine improves so we should save as many lives as possible.

6) Contraception is against nature so we should procreate naturally.

7) Any attempt to limit population growth will have to be made in LEDCs and this could be construed as an attempt by the "haves" to limit the "have nots" and so safeguard their own lifestyle.

8) Increasing affluence gives people the ability to clean up the environment but at a cost to the distant environment - e.g. factories move to LEDCs.

9) Increased population size in LEDCs leads to subdivision of farms for children until they are too small to support the family, encroachment on forest to gain more land, migration to cities or MEDCs, illicit trade, poaching, etc. as unemployed people become desperate.

QUESTION: Do you agree with these statements? How would you classify each... technocentric, cornucopian, environmental manager, or ecocentric?


Source: pp170 of Course Companion, ESS, Jill Rutherford