Humans, Environments, and the Anthropocene

Humans, Environments, and the Anthropocene


update: 8/7/2020


Nature?

Nature is perhaps the most complex word in the language. It is relatively easy to distinguish three areas of meaning:

(i) the essential quantity and character of something;

(ii) the inherent force which directs either the world or human beings or both;

(iii) the material world itself, taken as including or not including human beings.

Source: Raymond Williams, “Nature” (from Keywords, 1983)

Nature is complicated

Nature vs Environment?

  • Nature is often informally used to mean the non-human world
  • Environment is often informally used when we mix in human relationships to the non-human world

In theory, we can think about humans as separate from the non-human world:

Humans throughout history have always elevated themselves (ourselves) above non-human nature

  • Religion, philosophy, and the sciences have played a significant role in this distinction

It is often useful to break things down and look at them in relative isolation

  • the natural sciences typically remove social and cultural factors
  • the social sciences typically remove natural factors

But there has also long been a recognition that separating humans from non-human nature has its limits

Understanding the big picture – particularly with environmental issues – requires joining the natural, cultural and social

Nature and Humans: the Anthropocene

Anthropocene: (an·thruh·puh·seen) “an informal term used to mark when human actions begin to have a global impact on Earth’s environment” (Companion to Environmental Studies, p. 144)

International Geological Congress, Anthropocene Working Group: moving towards adoption of this period as part of the Geological Time Scale. Adoption expected in 2021 (source)

Above: Geological Time Scale with proposed Anthropocene (source)

Blurs the boundary between humans and nature: we are a global, geological-scale force

RHM textbook, Environment & Society: Oostvaardersplassen “Wilderness,” Netherlands

Rewilding: “A practice of conservation where ecological functions and evolutionary processes, which are thought to have existed in past ecosystems or before human influence, are deliberately restored or created; rewilding often requires the reintroduction or restoration of large predators to ecosystems” (p. 3)

  • But: which animals are reintroduced, or not?
  • Is it fair to exclude people (with their long history far back into prehistory) in the wilderness area?
  • Is it a good idea to use Nazi-bred Heck Cattle (given that other older cattle species are extinct)?
  • Is the cost worth it, given other (social) needs?

Natural or Social? “The area is simultaneously neither and both, with animals, plants and waterways springing from human interventions, creating altogether new habitats and environments.”

Decisions about what to do (and what not to do) requires understanding how to live within nature:

  • this means integrating  nature and humans

RHM textbook, Environment & Society:

  • First half: perspectives: “dominant ways of thinking about environment-society relations”
    • there are many more… you will encounter in courses and elsewhere
    • shape how people think about and impact the environment
  • Second half: perspectives “applied to familiar objects of the world around us.”
    • not problems and crises: important
    • “An opportunity to break away from the environment as an undifferentiated generic problem, one universally characterized by a state of immediate and unique crisis.”
    • the problem with apocalyptic catastrophism & environment
      • apocalyptic: “describing or prophesying the complete destruction of the world.”
      • catastrophism: “involving or causing sudden great damage or suffering.”

A generalized process: book, class, class project

  • Understand the natural and the social together focused on varying  environmental perspectives
  • Understand common objects embedded in natural and social contexts
  • Understand how environmental problems (at a range of scales) arise from this complex context
  • Define solutions to these problems

This relationship is complicated: nature shapes humans (culture, society) and culture and society shape nature

Human Environmental Cycle

How to make sense out of this relationship is at the core of understanding the environment – and nature – and humans

Next up:

  • Basics about the natural environment (with humans left out, for the moment)
  • Then some key ways to approach  Human & Environmental Interactions

Natural Environment

1a. Environmental Spheres and the Earth System

  • Classification based on differences in matter
  • Biotic (living) and abiotic (non-living) things and conditions:

Lithosphere: Greek (litho) = stone

  • courses in Physical Geography and Geology

Atmosphere: Greek (atmo) = air

  • courses in weather and climate (Physical Geography)

Hydrosphere: Greek (hydro) = water

  • course in hydrology (Geology)

Biosphere: Greek (bio) = life

  • courses in Botany and Zoology (Biology)

But: the four spheres are not discrete and separate but intermingled

1b. Ecosystems and Biomes

  • Courses in ecology (Botany and Zoology)
  • Classification based on interactions

Ecosystem: a group of environmental characteristics which define a particular area; the totality of interactions among organisms and the environment in the area of consideration; elements from all the earthly spheres

Many ways to classify ecosystems

  • classify according to the amount of organic matter – biomass – produced per year

  • classify according to the relationship between climate (atmosphere) and the biosphere

Biomes: large areas of the earth can be categorized as relatively distinctive, with particular climate, animals, plants: a large, recognizable assemblage of plants and animals in functional interaction with its environment

Major World Biomes

Allee (1949) biome-types

  • Tundra
  • Taiga (coniferous forest)
  • Deciduous forest
  • Grasslands
  • Desert
  • High plateaus
  • Tropical forest
  • Minor terrestrial biomes

But… many different ways to classify biomes… Kendeigh (1961), Whittaker (1962, 1970, 1975) … and so on: Wikipedia Biomes

2. Natural Cycles

  •  physical changes (through time and over geographic space) in matter

Natural cycles are cycles of matter in the natural world: where molecules are formed and re-formed by chemical and biological reactions, manifested as physical changes in the matter

2a. The Hydrologic Cycle

2b. The Carbon Cycle

  • respiration of animals: carbon moves from litho/biosphere to atmosphere
  • photosynthesis: green plants convert atmospheric carbon to complex sugar compounds
  • amount of time carbon remains at a particular place in the cycle varies

Lots of other environmental cycles: Google

Important: can’t change one part of a system without having some effect on another part of the same system, and other cycles and systems

One of the reasons we don’t have a sense of the effects of our modification of these natural systems is that they are often out of sync with our particular time and location

3. Time and Space and Environmental Change

3a. Time and Environmental Change

Geologic Time and Important Events

 (source)

 

  • Time scale chosen to study natural systems effects understanding

Dynamic equilibrium: input and output of matter in natural systems is balanced, but there are shorter term fluctuations

Source: Middleton, The Global Casino (2003), Fig. 1.9: Time scale and Oxford England Temperatures
  • different time-scales of analysis: different conclusions

Feedback in a natural system

  • negative feedback: maintains dynamic equilibrium
  • ex) circulation of oceans and atmosphere redistributes energy (heat)
  • positive feedback: drives changes away from the original equilibrium state
  • ex) increases in greenhouse gasses in the atmosphere drives up average temperatures over time

Thresholds: a change in a system may not occur until a threshold is reached: a breaking or tipping point after which the system shifts to a different state

(source)

  • certain places (ecosystems, biomes) more sensitive to thresholds and feedback: where (geography) matters

3b. Space / Geography and Environmental Change

Spatial location and scale also affect our understanding of environmental change:

  • Areas of the US crossed by more than one nuclear cloud from aboveground detonations: (source)
 
  • Costs and benefits, impact of climate change (US): (source)

Projected impact of climate change on agricultural yields by the 2080s, compared to 2003 levels (source)

 

Environmental issues we will discuss this semester have arisen as a consequence of human activity interacting with environmental systems

  • have a basic understanding of how natural systems work
  • where (descriptive: classification) and why (analysis, explanation)
  • vital to consider effects on other time and spatial scales

Back to the Anthropocene

The concept has certainly had an impact beyond Geology:

The Anthropocene is about the consequences of the production and reproduction of the means of existence of social life on a planetary scale.

It seems likely that the Anthropocene as a kind of periodization more or less corresponds to the rise of capitalism.

Means for enduring the Anthropocene are not going to be exclusively cultural or political, let alone theological. They will also have to be scientific and technical.

And in the present, it is time to work transversally, in mixed teams, with the objective of producing forms of knowledge and action that are problem-centered rather than tradition and discipline centered.

Source: Critical Theory After the Anthropocene, McKenzie Wark ( August 9, 2014)

 

Next: Is this class about everything?


Nature >> Environment >> The Anthropocene >> Human/Environment Interaction >> Everything?

Environmental Geography: historically, Geographers were among the first scholars to explicitly note and study human/environmental relationships. Human stuff, natural stuff, all together in space and over time.

Many approaches emerged in the 19th and 20th centuries:

Above: Middleton, Global Casino (2003) table 2.4: 20th century Western Environmental Thought
Current names for the “everything” approach:

Political Ecology: “the study of the relationships between political, economic and social factors with environmental issues and changes. Political ecology differs from apolitical ecological studies by politicizing environmental issues and phenomena.” (source)

Environment and Society: A more generic term than political ecology, broader maybe, but following the tradition of environmental geography and political ecology.

  • Ways of thinking: Approaches and Perspectives to Environment & Society
  • Problem or object-based (“follow the thing”) approach

Few More Concepts and Definitions

Human Environmental Cycle

Resources: anything in the natural world that is useful to humans; a cultural appraisal of the natural world, as different cultures (and the same cultures at different times) assume certain things to be resources and others not

Resources in the Natural Environment

  • continuous resources
  • renewable resources
  • non-renewable resources

Resources in the Human Environment

  • extrinsic resources

Environmental problems can be seen as the result of a mismatch between extrinsic resources and natural resources; they stem from people deliberately or inadvertently misusing or abusing the natural environment.


Driving and Mitigating Forces

Above: Middleton Global Casino, fig 2.1: Human Forces of Environmental Change

Example: Population (we will come back to population in more detail)

  • Driving force: more people, more natural resources required
  • Mitigating force: limit the number of people to limit required natural resources

Example: Technology

  • Driving force: the desire for mobility and the development of the internal combustion (carbon-based fuel) engine
  • Mitigating force: electric vehicles, public transportation, stay at home

Human-Induced Imbalances

  • Imbalances created and maintained by economics, culture, and society
  • Imbalances – economic and political – are important driving forces behind environmental change

Example: unequal distribution of wealth produces more CO2:  

2016 Oxfam Study: the greatest polluters of all were the most affluent 10% of US households: each emitted, on average, 50 tonnes of CO2 per household member per year. Canada’s top 10% were the next most polluting, followed by the British, Russian and South African elites.

In more equitable affluent countries such as South Korea, Japan, France, Italy and Germany, the rich don’t just pollute less; the average pollution is lower too, because the bottom half of these populations pollute less than the bottom half in the US, Canada or Britain, despite being better off.

In short, people in more equal rich countries consume less, produce less waste and emit less carbon, on average. Indeed, almost everything associated with the environment improves when economic equality is greater. (source)

Example: Unequal distribution of wealth produces more waste (source):


Sustainability

Everything that we need for our survival and well-being depends, either directly or indirectly, on our natural environment. To pursue sustainability is to create and maintain the conditions under which humans and nature can exist in productive harmony to support present and future generations. (Source: US EPA)

Closely tied to economic development:

Above: Middleton, Global Casino, fig 3.3: Development and Environment
  • cycle A: typical of global economy in historical times
  • cycle B: when cycle A crosses an environmental threshold
  • cycle C: sustainable development

Sustainable Development

A compromise between economic development, the creation of wealth, and the exploitation of natural resources on one hand, and stewardship and conservation of natural resources and the natural environment on the other

Origins in a Report: World Conservation Strategy (1980): All economic development programs should

  • maintain ecological processes
  • promote sustainable use of resources
  • maintain genetic diversity

Developed further by the Brundtland Commission: United Nations, 1983

  • Sustainable development: “development which meets the needs of the present without compromising the ability of future generations to meet their own needs” (World Commission on Environment and Development, 1987)

Sustainable development draws together environmental, social, and economic concerns: basic guiding principles:

  • continued support of human life
  • maintenance of environmental quality and long-term stock of biological resources
  • right of future generations to resources of equal worth to those used today

Key issue in sustainable development: relative roles of

  • economic growth: quantitative expansion of economies
  • development: qualitative improvement of society

We can improve human lives and society (development) with very slow or no economic growth by being more efficient and careful with our use of resources

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