Biodiversity 3.1 c - EQ 1.3?

Question 1

Where is Slapton Ley?

Answer 1

Slapton Ley is on the south coast of Devon

Question 2

What is Slapton Ley?

Answer 2

It is a lake separated from start bay by a shingle beach known as Slapton sands. It is 1.5 miles long making it the largest natural freshwater lake in south-west England

Question 3

what are the two sections of the Ley?

Answer 3

The lower and higher Ley

Question 4

which river runs into the higher ley?

Answer 4

The Gara

Question 5

what does SSSI stand for?

Answer 5

Site of Special Scientific Interest

Question 6

what factors or processes have protected/enriched biodiversity at Slapton? (1)

Answer 6

The bar has acted as an effective barrier to flooding keeping the sea water away from the freshwater

Question 7

what factors or processes have protected/enriched biodiversity at Slapton? (2)

Answer 7

local habitats have been well managed through a mainly bottom up approach e.g. the Field centre

Question 8

what factors or processes have protected/enriched biodiversity at Slapton? (3)

Answer 8

relatively high temperatures and light level (in comparison to the rest of the UK) allow for rich biodiversity

Question 9

what factors or processes have protected/enriched biodiversity at Slapton? (4)

Answer 9

Abiotic variation (plants and soil) has been able to support species from a number of different ecosystems

Question 10

what local factor can affect biodiversity? (1)

Answer 10

Succession:

Biodiversity increases as species establish themselves, interact and subtly alter the environment.

Question 11

what local factor can affect biodiversity? (2)

Answer 11

Interaction between species:
This can lead to competition which in turn may drive certain species to extinction, particularly when exotic species are introduced.

Question 12

what local factor can affect biodiversity? (3)

Answer 12

Disturbance:

Major environmental disasters such as fires, flooding and storms can destroy biodiversity.

Question 13

what local factor can affect biodiversity? (4)

Answer 13

Dispersal and Colonisation :
Individual species’ dispersal and colonisation rates have an impact on biodiversity. High rates of efficiency enhance biodiversity.

Question 14

what human factors are direct drivers of change to biodiversity? (1)

Answer 14

• Changes in land use and cover
• Species introduction or removal
• Technology adaptation
• External inputs such as fertiliser use.
• Harvest and resource consumption
• Climate change
• Natural, physical and biological drivers (Evolution and volcanoes)

Question 15

what human factors are indirect drivers of change to biodiversity? (2)

Answer 15

• Demographic
• Economic (Globalisation, trade, market and policy framework)
• Science and technology
• Cultural and religious beliefs (Consumption choices)