Biodiversity and the roles of human population and consumption: a debate

It is the rich minority’s consumption that mainly affects the status of the Earth’s life support system, according to a response in Svenska Dagbladet by David Collste at Stockholm Resilience Center and Jennifer Hinton at the University of Lund to an Op-ed by Malte Andersson and Frank Götmark. But will the poor majority consent to remain poor, and does it make sense to worry about consumption but not the number of consumers? ask Andersson and Götmark in reply. See their responses below — and share your own opinion in the comment section.

These texts are translations of response and final response in Svenska Dagbladet (the original Op-Ed was published on 2 January – an English translation can be read here).

The consumption of the rich destroys nature

It is the rich minority of the world’s population that mainly affects the status of the Earth’s life support system, through their huge consumption.

In the environmental debate, it is often pointed out that the issue of population growth is taboo. We do not agree. In most contexts where we are active there is discussion of the population issue. The reason why it is not emphasized more is that the statistics speak for themselves: currently, overconsumption is the main problem, not population growth.

Andersson’s and Götmark’s (A&G) numbers in the Op-Ed point to the fatal consequences of our resource consumption. We share their view that this is not emphasized enough in the public debate. Questions about the future of humanity and the survival of animal species often fall short of more current issues. However, the verdict of the future will be harsh if we do not take serious steps to bring about the sustainability transformation that is required. But the fact that A&G are right about the extent of the problems does not mean that they correctly demonstrate the core of the problem. The question is whether their main argument is correct: is it primarily population growth that is destroying the Earth’s nature, as they claim in their headline? Or is it primarily a question of the consumption of the rich? We believe that most evidence point to the latter.

Almost regardless of how we measure, the contribution of the world’s poor to the destruction of nature is small in relation to the world’s rich. If we consider carbon dioxide emissions, for example, calculations from the Stockholm Environment Institute and Oxfam show that the 10% who make up the world’s richest account for 50% of the emissions, while the poorest 50% account for only 8% of the emissions. If instead of greenhouse gases we look more broadly at the use of resources, Hickel and colleagues state that consumption in the world’s high-income countries is behind 74% of the overuse of materials, including biomass, metals, non-metallic minerals and fossil fuels. At the same time, the rich part of the world consists of only 16 percent of the world’s population. We can also study the ecological footprint, another measure of human impact. According to this measure, the average Swede’s footprint is 5.6 global hectares per person, the average US citizen’s footprint is 7.8 hectares, while the world average is around 2.6 hectares.

The rich minority of the world’s population therefore primarily affects the status of the earth’s life support system through their huge consumption. Or expressed as a headline: Earth’s nature is devastated by the consumption of the rich.

For the rest of this century, what is the future of world population development – is it a growing problem? While the world’s population in 1990 was a third smaller than today, the size of the world economy has more than doubled during the same time. Population growth also shows a clear downward trend and according to several calculations, the world population will peak sometime between 2050 and 2080 and then start to decrease (Wittgenstein Center for Demography and Global Human Capital, Vollset et al. 2020, Callegari et al. 2023 and the United Nations).

However, if one accepts that both population size and consumption together cause environmental impact, one could argue that the population of rich countries should be reduced, but there is no argument for this in A&G’s article. If the world population is to decrease to 2–3 billion, would it perhaps be best to start by cleaning up in front of your own house? Our question to A&G is therefore what measures they propose to limit Sweden’s population.

Overall, we conclude that it is the consumption of the rich that is the main cause of the destruction of nature. The unsustainable consumption is caused by a dysfunctional economic system that needs to change to better take into account the limits of the planet. Such a change involves redefining success from a narrow focus on GDP, profit and income to indicators that measure the well-being of nature and people. We also need to promote a more even distribution of income and resources – within and between countries. In high-income countries, consumption needs to decrease in order to limit the overall environmental impact. For example, shortened working hours can mean better public health and increased quality of life – with more time for each other. Those interested can read more about what we propose in our publications (see, for example, the book ”Earth for All”, the report “Economy and Finance for a Just Future on a Thriving Planet” and “Not-for-profit-economy”).

Answer from Malte Andersson & Frank Götmark:

“Action is needed to reduce population”  

The need for humanitarian measures to stop population growth is great and growing. Let’s avoid the mistake of climate change: turning a blind eye until the problem becomes acute, write two ecologists. 

We described in our Op-Ed how the world’s population growth is destroying nature and species. Collste and Hinton (C&H) argue that the consumption of the rich is more important. But population growth has been destroying biodiversity for thousands of years as Homo sapiens expanded over previously pristine nature, islands, continents. The consequences resemble those of previous disasters and geological events that caused mass extinctions. We are causing a new and biologically destructive geological epoch, the Anthropocene.

C&H write that mainly the consumption of the rich destroys the Earth’s nature, and “Population growth shows […] a clear downward trend”. But the increase continues, with around 80 million people per year. And the UN underestimates the growth, so the maximum population will likely be higher and later than the UN predicts. Other, lower forecasts are unrealistic as investments required to reduce population growth are not taking place.

C&H believe that ecological footprint (EF) shows the importance of consumption, but analysis of EF also shows the great importance of the population. One of EF’s founders, William Rees, now warns of collapse via increasing population and resource use. And EF doesn’t measure biodiversity destruction, only human consumption.

C&H falsely claim that we wrote that it is primarily population growth that is destroying the Earth’s nature. Of course, both consumption level and population growth affect our environment and total resource consumption, R. A simple approximate relationship is R = P x F, where P is the size of the population and F is average consumption per individual. P and F have the same multiplicative effect on R. Believing one of them is more important than the other is like assuming that the area of ​​a rectangle depends more on its height than its width.

C&H point out that consumption is unreasonably skewed. Yes, we wrote “the high consumption of the rich world obviously needs to decrease”. Another important way the world is skewed concerns population growth. In about 20 countries (Europe, East Asia) the birth rate is so low that the population fortunately can decrease (without immigration). But in many poor countries, where economic prosperity hopefully is increasing, birth rates are high, and the population is growing rapidly. It is expected to lead to increased use of fossil fuels for energy, environmental destruction and decreasing biological diversity. But the birth rate can be reduced by humanitarian means such as education, voluntary family planning and free contraceptives.

Climate change is primarily caused by increasing population and consumption according to the IPCC. Both also cause destruction of biological diversity. But in contrast to climate and consumption, which are often debated, the destructive effects of population growth on nature and species are rarely highlighted. C&H see no taboo, but it seems to prevail at both Swedish Public Service (SR, STV) and organizations such as the Swedish Society for Nature Conservation.

Population growth’s role in the development of poor countries is also forgotten. Large numbers of children slow economic and other progress, especially for women, but family planning can contribute to economic development. And increased use of contraceptives, rather than economic growth, seems to explain declining birth rates in developing countries.

C&H write that the population in rich countries logically should be reduced, and that we present no arguments for this in the Op-Ed. But see our quote: “overpopulation is at least as much a rich as a poor country problem”. We have, together with co-authors, pointed out in research and in the media that an aging population can lead to fewer people and reduced environmental impact. What can be done in Sweden, C&H wonders. We can, for example, abolish multi-child allowances and limit the child allowance to a maximum of two per family.

Population increase leads to faster consumption of resources, destruction of nature and decreasing biological diversity. Africa’s population, which according to the FAO has widespread and growing malnutrition, increases according to the UN’s forecast from 1.4 to 3.9 billion this century! The need for humanitarian measures to stop population growth is therefore great and growing. Let’s avoid the mistake with climate change: turning a blind eye until the problem becomes acute and very difficult to fix. Increased support for family planning and for the situation of women are good opportunities that should be used now, when our government is reconsidering Swedish aid.

TOP invited a comment from David Collste and Jennifer Hinton to Andersson’s & Götmark’s response above. David sent us the comment below, with one link: 

  • Our reaction specifically concerned the title of the original op-ed: ”Earth’s nature is being ravaged by population growth”. I am aware of the importance of the population issue but reacted to the original newspaper headline of the op-ed: that it is population growth that is destroying the Earth’s nature when it is at least as much a question of economic activity, or as I’ve framed it earlier: “It’s what people do, how they do it and how much they do it.”.

What do you think? Give your view, write in the on-line discussion below!

Print Friendly, PDF & Email

20 responses to “Biodiversity and the roles of human population and consumption: a debate”

  1. mortenjohanlintrup Avatar

    Common sense dictates that each must contribute as best he/she can. Including that clans, countries and cultures with rampant population growth must limit their numbers. As I see it as an affluent Westerner: I cannot really take criticism and responsibility with more than a shrug of my shoulders when I and my lifestyle is blamed alone and other people with a destructive and environmentally aggressive behaviour are let off the hook entirely. Aim for a balanced solution, or get our common future nowhere – except totally out of control.

    1. PHILIP CAFARO Avatar

      mortenjohan, I couldn’t agree more. West, East, North, and South, both our numbers and our consumption levels need to be addressed.

      Even in developed countries where population growth has slowed or stopped, populations remain way too high for sustainability.

      Even in developing countries where average consumption is relatively low, those with more wealth overconsume, just like wealthy westerners.

      Enough with the virtue signaling! Time to get serious about ecological overshoot, a global phenomenon!

      1. gaiabaracetti Avatar

        Rich people in poor countries is one part of the problem that everyone always forgets about… Some seem to think that rich people only live at certain latitudes.

  2. Esther Phillips Avatar

    The climate change equation was very simple – my father a physicist specialised in thermodynamics, knew a thing or two about this, and had a vasectomy after one child in the 1960s as “more feet=more heat”. More Human feet also means less bio-diversity, which doubles the heating effect as Humans not only burn fossil fuels, but also take out the other species that stabilise(d) the climate.
    Overpopulation’s symptoms are amongst others: climate change, loss of bio-diversity, toxicity by pollutants, increased conflicts over territories, forced migrations, pandemics, all that we see now. A Human who is not born doesn’t consume anything, how hard is this to understand? The quality of life for all Humans is plunging – don’t think the wealthy are not fretting by now.
    Poor people will plunder their environment once they become too many in an effort to survive or move away to try and find subsistence, that their effect is negligible is a fable. It is utterly beyond me how consumption can be separated from existence. I am, therefore I consume – always too much for the biosphere, it is in our nature.
    Should we one day wish to share resources equally at 8 billion and keep the Earth from heating in excess of 2C (1.5 is already baked in and we’re barely coping…) we would have a carbon allocation of 1.5tons per person per annum which is about the average lifestyle of someone in Chad or Yemen. All else is excess…I hope those who say overconsumption is the only problem are stopping it immediately! From now on your holidays consist in cycling in your country, your business meetings are via the internet, and of course you are all vegan and have no children as you wouldn’t want to produce such over-consumers. The more numerous we are, the smaller the slice of this Earthly birthday cake! How can this species be so astoundingly stupid, irresponsible and frankly uncaring about their children? In view of the catastrophe in the making we have not faced any children with living a life of pain and terror, only waiting for the whole thing to blow up and maybe even feeling ashamed of being Human. I might be mistaken but in my eyes that was a token of love, we put our children’s welfare over and above our longing for having some. Looking at the world we have, in the grip of the most unholy trinity: patriarchal structures, rampant capitalism and religious beliefs not having children is the proudest thing I have done. Who will look after us when we are old? Actually Dignitas is a far more appealing option than the end of life “care” that was given to my parents.

    1. Tim Avatar

      Well said Esther! I couldn’t agree more!

    2. David Polewka Avatar

      Pandemics, epidemics, are not a symptom of overpopulation;
      they are a normal process of Nature!

  3. Eduard Avatar

    It is good to read that in the end, everybody agrees that population growth is at least one of the most serious threats to address, and that it would be very wise to start in the richest countries with proposing measures, and from there on focus on the whole world while reducing total consumption and redeviding whealth. Maybe that’s the vision for the future that is needed. If we ask people to invest en give up their affluence, we have to paint a future that is worth giving up for. For now, political parties are only focused on population in relation to emigration or are, stung like a bee by that argument, claiming that population growth is not the problem but consumption is.

  4. Stephen McKevitt Avatar

    Yes: The rich are doing great damage to our biosphere, along with doing all the other harmful things that their greedy activities are involved in. Here in the United States, the mega-rich and their corporations have purchased the news media businesses and the nation’s other cultural assets … and thus they control most of the main conversations.

    But the poor are also doing great damage. One of the sad occurrences involving some people on the Left side of the political spectrum is that those people will excuse any behavior of the poor … because they’re poor. This is basically stupid. The poor are also doing great damage to the planet. The huge volume of human beings is crazy, This situation is so without precedent. It’s even sadder when we consider that today the “good-goal” ought to be getting people out of poverty. Everybody … rich and poor … should be working to drop the human population.

    I have little use for those people who like use “Population-Talk” to excuse the bad behavior of some, or to push their own agendas. The core of our population problem can be summed up in one paragraph. Stick to the message.

    1. PHILIP CAFARO Avatar

      And the core of the message is: “More feet = More heat” — and less of all the good things we care about.

  5. gaiabaracetti Avatar

    I still don’t understand why, if you agree that something is a problem, you need to spend so much energy arguing that it’s not the biggest problem so that people will only focus on what you think the biggest problem is, but not the second biggest. It’s like going to an AIDS conference scolding everyone because they are not curing cancer instead.
    At least that’s how I see it, at this point. I understand there are limited resources so we might need to set priorities, but arguing among environmentalists also consumes resources.

  6. Tim Avatar

    “…it is population growth that is destroying the Earth’s nature when it is at least as much a question of economic activity, or as I’ve framed it earlier: “It’s what people do, how they do it and how much they do it.”

    David’s response here seems to want to separate population growth from economic activity. In fact procreation itself, where it leads to the creation of a new consumer can arguably be viewed as a form of economic activity.

    “It’s what people do”: yes, (many) people do procreate, leading to the creation of new consumers of resources, stimulating further economic activity and population growth, through high birth rates and/ or immigration.

    “How they do it”: adding a consumer through procreation to the population inevitably increases economic activity to feed, cloth, and shelter and provide medical care to the offspring and the mother, eg medical equipment and technology, and infrastructure to support pregnancy and birth.

    “How much they do it”: how many times they procreate, ie how many offspring they create, adds further to population through birth rates and/or immigration, and therefore consumption of resources. This impact of course depends on where, and into what economic conditions offspring are born into, and where they continue to reside afterwards.

    1. PHILIP CAFARO Avatar

      Tim, agreed! Attempts to sharply separate human numbers from economic activity are pointless. changes in human numbers are an important –arguably the most important– factor driving changes in human economic activity. That’s why the US Chamber of Commerce is the group spending the most to lobby for increased immigration into the United States. More people equals more consumers, more workers, more economic activity generally.

      1. gaiabaracetti Avatar

        There’s also a case to be made for population growth to be conducive to inequality: cheap labour, less availability of resources per person. After the Black Death population collapse in Europe, evidence points to increased wages and better living conditions for the lower classes.

  7. David Polewka Avatar

    “C&H write that mainly the consumption of the rich destroys the Earth’s nature, and ‘Population growth shows […] a clear downward trend’. But the increase continues, with around 80 million people per year.”
    ————————
    According to Worldometers.info, that 80 million figure is wrong:
    —————————–
    World Population by Year
    Year…World Population…Net Change
    2023….8,045,311,447…70,206,291
    2022….7,975,105,156…65,810,005
    2021….7,909,295,151…68,342,271
    2020….7,840,952,880…76,001,848
    2019….7,764,951,032…81,161,204
    2018….7,683,789,828…83,967,424
    2017….7,599,822,404…86,348,166
    2016….7,513,474,238…86,876,701
    2015….7,426,597,537…87,584,118
    2014….7,339,013,419…88,420,049

    https://www.worldometers.info/world-population/world-population-by-year/

    1. Frank Götmark Avatar

      David,

      Worldometer is using UN data. Jane has shown that they underestimate population growth, see https://overpopulation-project.com/delusional-population-projections-lead-us-sleepwalking-into-catastrophe/

      this has now also been published, paste the following title in search engine: “Demographic Delusions: World Population Growth Is Exceeding Most Projections and Jeopardising Scenarios for Sustainable Futures”

      1. David Polewka Avatar

        Oh, okay. Maybe this is the U.N.’s bible:
        https://en.wikipedia.org/wiki/How_to_Lie_with_Statistics

  8. Stable Genius Avatar

    It suits Collste and Hinton, to have an indefinite and useless argument, is it population or is it consumption?

    The point they are missing, the former is much easier to control than the latter. It is madness, to keep adding 80m a year, and say, look-over-there at consumption.

    1. gaiabaracetti Avatar

      Why can’t they just address consumption if they care about it so much (and I do believe they should), and leave population activists alone, to do their own thing.

  9. Stephen McKevitt Avatar

    I have come back to this issue because I believe it’s so important to the overpopulation problem. We have many people who call themselves “progressive” who will not acknowledge that the human problem … right now … is far too many people on the planet. That’s the problem. Saying that the rich are causing this problem is missing the point. It is the volume. So those of us who are striving to deal with this overpopulation issue have to deal with some very deluded and basically stupid people on the left. People who are afraid to reset their thinking and who have taken up an agenda as their goal, and have frozen their minds. And cannot be of help (unless they sit down and do some good computation work on their own). I hope that The Overpopulation Project has the backbone to speak frankly to these misguided folks and will not let them waste time and energy on sidetracked thinking. Much of the environmental movement is infested with this deluded thinking.

    Yes the rich are bad, using an essentially rotten way of controlling people for selfish gain. The terrible corporate system of our world is wrong, unjust and nasty. Yes, we have to reform our way of living. But today all 8 billion people need food, clothing, shelter, etc. This massive scale of use is killing the planet.

    We must drop our population all over … rich and poor … large country and small country. Any talk that avoids or deflects facing this fact is harmful.

    1. Tim Avatar

      Exactly Stephen!

Leave a Reply

This site uses Akismet to reduce spam. Learn how your comment data is processed.

Explore the content and topics covered by TOP, search here

Blog categories

Gallery of infographics – Learn more about overpopulation and environment

Discover more from The Overpopulation Project

Subscribe now to keep reading and get access to the full archive.

Continue reading