Environmental Changes And Their Indicators

Question 1

Ecosystem Extent and Condition

Answer 1

Natural ecosystems have declined by 47% on average

Question 2

Species extinction risk

Answer 2

Approx 25% of species are already threatened with extinction in most animal and plant groups studied

Question 3

Ecological Communities

Answer 3

Biotic integrity - the abundance of naturally-present species - has declined by 23% on average in terrestrial communities

Question 4

Biomass and Species Abundance

Answer 4

The global biomass of Wild mammals has fallen by 82%. Indicators of vertebrate abundance have declined rapidly since 1970

Question 5

Nature for indigenous peoples and local communities

Answer 5

72% of indicators developed by indigenous peoples and local communities show ongoing deterioration of elements of nature important to them

Question 6

Anthropence: The Great Acceleration (1950)

Answer 6

• New materials
• Modification of sedimentary processes
• changed geochemical signatures in sediment and Ice