Living in the anthropocene Flashcards

1
Q

What does the anthropocene describe?

A

The hypothesis that we are living in a new geological era in which humans are altering the planet to such an extent that we are leaving a permanent and irreversible mark on the earth’s biological, hydrological, atmospheric and geological systems

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2
Q

How much rock do humans move each year?

A

In a single year we move more rock and earth than all natural erosion combined

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3
Q

What are we close to exceeding?

A

Several of the nine major planetary boundaries

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4
Q

What are the 9 major planetary boundaries?

A
Climate change
Ocean acidification
Chemical pollution
Nitrogen and phosphorus loading
Freshwater withdrawals
Land conversion
Biodiversity loss
Air pollution
Ozone layer depletion
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5
Q

How have we changed the appearance of the Earth?

A

Three quarters of all land outside the ice sheets owes its appearance to us

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6
Q

How many people can the Earth support naturally?

A

3.5 billion but humans have adapted the environment to hold more

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7
Q

How can we make cities sustainable?

A

By fostering biodiversity

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8
Q

How much of the world’s population live in cities?

A

More than half

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9
Q

What is a problem threatening concrete?

A

We are running out of sand for it

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10
Q

Where does the sand for concrete come from?

A

Deltas and rivers- can’t use aeolian sand

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11
Q

How much concrete has been produced enough?

A

All of the concrete in the world could case the entire Earth 2mm thick

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12
Q

What has caused there to be a hole in the ozone layer?

A

CFCs

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13
Q

Where is the ozone hole located?

A

It is over Antarctica but if it were over inhabited areas then it would cause skin cancer and other health issues

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14
Q

When were greenhouse gas levels last this high?

A

Greenhouse gas concentrations have not been this high for more than 3 million years

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15
Q

What is happening to global temperatures?

A

They are rising

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16
Q

What is a threat to oceans?

A

Ocean acidification

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17
Q

What is happening to sea levels?

A

They are rising

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18
Q

What is happening to deltas and why?

A

They are sinking 4x faster than sea levels are rising due to dams

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19
Q

How many of the world’s deltas are sinking?

A

Two thirds of the world’s deltas are sinking due to damming, mining and other causes

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20
Q

how many people move to the city every week and for how long is this predicted to continue?

A

1million inhabitants every week until 2100

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21
Q

What is an issue with growth?

A

Health, wealth and longevity increased yet more than 1 billion remain malnourished

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22
Q

How many people are expected to live on the planet?

A

9 billion

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23
Q

What is an issue with inequality and life expectancy?

A

There is a 20 year life expectancy gap in kensington

24
Q

In what geological epoch did life begin?

A

Phanerozoic

25
What has human rights in Bangladesh and New Zealand?
rivers
26
What are 3 issues related to water stress?
Rivers drying out Mining Oceans breaking heat records
27
What has colonisation led to?
Cooling as diseases are brought over and landscapes change
28
What has there been a loss of which is essential for environmental function?
Pollinators
29
What has there been a change in the distribution of over the years?
Crop distribution has changed over the years
30
What is a reason for the extinction of species?
Humans have been introducing other species
31
What do 'golden spikes' mark?
Clear boundaries geologically
32
What is meant by 'the Great Acceleration'?
The steep increase and potential future increase in the use of fuel
33
What has there been an increase in between 1890 and 1990?
Nitrogen fixation
34
What are the trends in terms of investment?
Both rich and poor follow curves in terms of investment
35
What is meant by internal dynamics?
Plate tectonics
36
What does E stand for?
Earth system
37
What is the equation for the rate of change of the Earth System?
dE/dt = f (A,G,I)
38
What does A stand for?
Astronomical forcing
39
What does G stand for?
Geophysical forcing
40
What does I stand for?
Internal dynamics of the Earth System
41
The balance of which elements in coastal zones can affect ecosystems?
The nitrogen-phosphate balance in coastal zones affects ecosystems
42
What is an issue with changing the landscape to produce other species?
Can't go back to the old environment easily
43
What does H stand for?
Humans
44
What is the anthropocene equation?
``` dE/dt = f(H) A,G,I= 0 ```
45
What is the equation for the H dynamic of the anthropocene equation?
H= f(P,C,T)
46
What does P stand for?
Population (consumers)
47
What does C stand for?
Consumption
48
What does T stand for?
Technosphere
49
How can the technosphere value be found?
T = f(En, K, Pe)
50
What does En stand for?
Energy system
51
What does K stand for?
Knowledge
52
What does Pe stand for?
Political economy
53
What is the environmental impact equation?
I= P x C x T
54
What does I stand for in the environmental impact equation?
Environmental impact
55
What does P stand for in the environmental impact equation?
Population
56
What does C stand for in the environmental impact equation?
Consumption per person
57
What does T stand for in the environmental impact equation?
Impact per unit of consumption