Biodiversity (AQA A-Level Geography): Flashcards

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Biodiversity
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Biodiversity definition

Variety of life: species, habitats & genetic diversity

Species richness

Number of different species present in an area

What does Living Planet Index (LPI) measure?

Trends in thousands of vertebrate species populations

Animal population decline 1970-2014 (LPI)

60%

Freshwater species decline rate

83% average decline

Main threats to biodiversity (top 2)

Exploitation (hunting/fishing) & habitat loss/degradation

Current extinction rate vs pre-human

100-1,000 times greater

% of ice-free land transformed by humans

40-50%

UK blanket bog carbon storage comparison

More than all forests in Britain & France combined

Kinder Scout height above sea level

636 metres

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